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Article

HoReCa Food Waste and Sustainable Development Goals—A Systemic View

by
Aleksander Buczacki
1,*,
Bartłomiej Gładysz
1 and
Erika Palmer
2
1
Faculty of Production Engineering, Warsaw University of Technology, 02-524 Warszawa, Poland
2
Sintef Ocean, N-7010 Trondheim, Norway
*
Author to whom correspondence should be addressed.
Sustainability 2021, 13(10), 5510; https://doi.org/10.3390/su13105510
Submission received: 13 April 2021 / Revised: 12 May 2021 / Accepted: 13 May 2021 / Published: 14 May 2021
(This article belongs to the Special Issue Systems Engineering for Sustainable Development Goals)
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Abstract

:
A significant share of food waste originates in the food services domain and HoReCa sector. Organizational improvements leading to the decrease of food waste and related costs in HoReCa are needed to make progress in this issue. A systems engineering approach was applied to examine the links between food waste generated in the HoReCa industry and the Sustainable Development Goals (SDGs). A literature review discovered two dimensions of actions leading to decreasing food waste in HoReCa; i.e., actions triggered by companies and by authorities (e.g., governmental policies). Additionally, customers and society were also considered. A framework is proposed to explicitly illustrate the dependencies of different micro actions devoted to food waste reduction in HoReCa in support of the SDGs. The other dimension of this framework is macro policies and their impact on SDGs. To increase food waste reduction awareness and collaboration, stakeholders on both the macro (launched by authorities for the whole sector) and micro (initiated by single organizations on their own) levels must work together. The results of this research will be useful in coordinating the efforts of all (consumers, HoReCa companies and suppliers, policymakers and administrations on different levels) involved in the supply chain of food production and consumption.

1. Introduction

Sluggish progress towards the targets of the 17 Sustainable Development Goals (SDGs) suggests that there is an urgent need to consider new approaches that clarify their interrelationships while also accounting for both their complexity and their sometimes mutually reinforcing or conflicting objectives. Attempting to achieve them in a linear succession is impossible, but pursuing them simultaneously is impractical [1].
Researchers from developed countries (USA and Europe) have been interested in food waste (FW) reduction, also recycling and prevention, since the 1910s [2,3]. In the past, the main focus was on waste disposal, but from the early 1980s, the awareness of the importance of FW prevention and reduction arose again [4,5]. Food is wasted along the entire food chain, starting from farms, plantations and fisheries, through processing facilities, transportation, distribution sites, retail establishments, restaurants and homes [6,7]. In the supply chain, from harvesting to the processing stage, 13.8% of food is wasted [8]. A significant share of food waste is generated in the food services industry, including restaurants, bars, bistros, fast food chains, catering, etc. It is estimated that about 7% of food is wasted in US restaurants before the consumer is served [9], and as determined for 2012, about 12% of food is wasted in the food service industry in the European Union [10]. For effective FW management in HoReCa (hotels, restaurants, catering), consumers’ habits should be considered along with additional stakeholder activities [11,12]. Typical sources of FW are oversized portions [13], inflexibility of chain store management, extensive menu choices [9], and meals served mistakenly or delayed. According to research results conducted in selected European countries, on average 20% of meals are wasted in the hospitality sector [14]. Sustainable Development Goal 12 has a target that addresses these statistics, namely, 12.3, which states, “By 2030, halve per capita global food waste at retail and consumer levels and reduce food loses along production and supply chains, including post-harvest losses [15].”
There are a number of studies focused on companies’ operational efficiency from the HoReCa sector that consider food waste on the micro (company) level, also taking into account the macro level, but without an SDG context. However, there is research focused on food waste on regional, country or event global (macro) levels that considers different SDGs and their indicators [15]. There is currently a lack of research with an integrative view considering both micro (organization) and macro (policymakers and economies) levels, and the SDG implementation perspective. Due to this, the main objective of this paper is a proposal for food waste reduction practice integration on micro and macro levels in the case of SDG objectives management using a systems engineering approach. In using a systems engineering approach, we apply systems thinking to food waste in HoReCa in an SDG context. In addition to developing a proposal, we place the results of this study into a larger discussion of how using a systems engineering approach addresses criticism of SDG targets in general using HoReCa as an example.
We begin this paper with an explanation of how we conducted the systematic literature review, and then we present the results in Section 3 in a systems engineering context. We conclude this study with a discussion of how a systems engineering approach can foster progress towards SDG targets. This paper provides an overview of dependencies between different SDGs from a food waste reduction point of view. It also provides an introduction to available practices for HoReCa businesses, with consideration of their own actions as well as authority-driven programs. The goal is, therefore, twofold, i.e.,
  • To develop a conceptual causal loop diagram for food waste in the HoReCa sector;
  • To develop a conceptual causal loop diagram for SDGs’ support from HoReCa best practices on food waste.

2. Materials and Methods

For this research, the following systematic literature review research methodology was implemented. First, the following queries (for article title, abstract and keywords) in WoS and Scopus databases were performed:
(1)
“Food waste” AND (HoReCa OR Hospitality OR “food service”)
(2)
“Food waste” AND “Sustainable Development Goals”
Hospitality and the food sector were included in the query, as the term “HoReCa” is not often used in publications on hotel, restaurant and catering operations. In the next step, only papers in WoS in English without date limits, related to environmental sciences, environmental engineering, green sustainable science technology, environmental studies, nutrition dietetics, management, business, economics, behavioral sciences and operations research management science were considered. In Scopus, only papers in English without date limits, related to environmental sciences, business, management and accounting, social sciences, economics, econometrics and finance and decision sciences were considered. Through abstract analysis, papers related to technical questions were excluded.
Only papers from 2015 to the present in English have been taken into consideration because the SDGs were accepted by the UN in 2015. The majority of the papers for the Food Waste AND SDG query focused on the circular bioeconomy and effective energy management, which are not relevant for this research. The second group of papers focused on technical questions. Some of the papers focused on recycling in general, not related to the HoReCa sector and FW reduction practices, so such papers were also not taken into consideration.
Finally, only papers related to food waste and HoReCa and related with HoReCa (hospitality and food service sectors) have been taken into further analysis (Table 1).
Selected papers have been analyzed according to the level of food waste practices:
  • Company level (micro)—closely related to companies’ operational activities and customer behavior.
  • Policymakers at regional, national or global level (macro)—related to polices and regional, national or global programs.
Best practices on the micro level, and in particular related to restaurants, have been identified. Preliminary impact of the identified best practices has been assessed.
Concurrently, best practices implemented by local, regional and national authorities as well as by international organizations and related to food waste appropriate SDGs have been identified. Later, relationships were analyzed separately for best practices on the macro level and the SDG focus. Finally, based on the analysis results, we developed the integrated framework. Figure 1 illustrates the research methodology.

3. Results

3.1. Queries Review Results

The tables below present the literature review results of two queries:
  • FW AND HORECA (Table 2), with year of publication and whether it concerns good practices addressed on the micro and macro level entities of both.
  • FW AND SDGs (Table 3), with year of publication and which SDGs the publication concerns. Additionally, the tables indicate whether the best practices described in the publication related to the micro and macro levels and entities of both.

3.2. Best Practices on the Micro Level

As mentioned, practices on the micro level are related to the ways HoReCa companies operate and consumer behavior. Analysis of the HoReCa companies may include three phases: pre-kitchen (FW in warehouse, storage before meal preparation), in-kitchen (FW during meal preparation) and post-kitchen (FW on plate). Food waste generated in pre-kitchen and in-kitchen phases largely depends on company business practice and supplier engagement. Food waste generated in the post-kitchen phase depends mainly on consumer behavior.
According to Vizzoto et al. [23], companies should focus on constantly revising the dishes offered in the menu, reduction of overcooking, creative reproduction, donations to staff/charity organizations, offering options of ordering smaller portions (e.g., for kids) and marketing actions. In general for waste reduction, many companies use the following types of actions [24,59]: measuring, engaging staff, reducing overproduction, rethinking inventory and purchasing practices, and repurposing excess food. For food waste reduction, there could also be the utilization of management practices, which are common in manufacturing companies. Gladysz at al. [18] examined the application of lean management practices and found the following to be most useful: 5S (technique for station organization), new layout design, Kanban (technique for process flow management), Gemba walk (technique for process analysis), TWI (training within industry) job instructions, standardization, visual management, personnel motivational system, matrix of competences and a suggestion system. To have a complete picture of the best practices in HoReCa, companies focused on food waste reduction should also account for the impact of suppliers and consumer behavior. According to da Rosa et al. [16], FW reduction activities should be focused on innovations in the planning of menus, purchases and process of food preparation. Local suppliers usually can react more flexibly and respond quicker to changes in demand. Especially in the tourism sector, there is an additional advantage of cooperation with local suppliers [32]. Better understanding of customer needs also has an impact on food waste reduction; e.g., extension of lunch breaks from 20 to 30 min in middle schools resulted in a reduction of plate leftovers [57].
Secondi et al. [50] suggested that the use and implementation of smart applications and digital solutions can support additional studies on out-of-home food waste from a multiple stakeholder perspective, to better understand the amount of FW generated in this part of the food supply chain and multi-stakeholder collaboration along the entire food supply chain [60].
After analysis of the best practices, the authors considered the value of capturing the dynamics surrounding food waste in the HoReCa sector in a causal loop diagram (CLD). Analysis of three HoReCa case studies conducted in Poland provided the rich details used to derive this diagram [17]. A causal loop diagram is a useful visualization of how different elements are interrelated. The diagram consists of a set of nodes and edges. Nodes represent the elements and edges are the links that represent a connection or a relation between them. Thus, if you consider the diagram in Figure 2, FoodWaste is placed at the center of the diagram. The research has indicated that the source of this waste comes from OutdatedFood and PlateLeftovers, which in turn are affected by the SizeOfMeals. Additional information about creating CLDs is abundantly available [61,62], and this diagram was generated using the AnyLogic8.2 software.
TotalDistancePerMeal is the total travel distance from stock of ingredients to customer plate. The greater Space, the greater this distance. Space in this model is used to mean overall space, including storage of ingredients, storage of leftovers, storage of meals to be served and meals in progress, but it also means space in the guestroom. Sales is mostly related to difficulties in planning due to the uncertainty of the number of guests. Those issues lead to fluctuations in other entities in the CLD, like IngredientsStocks that are linked with NumberOfMeals. The more complex is the meal (NumberOfOperationsPerMeal and OperationsCycleTimes), the longer the lead time from ordering to serving the meal to a customer (ServingLeadTime). The lead time is also growing with an increase in total distance (transportation) per meal. On the other hand, lead time is also growing if batches (CookingBatches) are increasing. The greater the batches, the bigger the stocks of ingredients are needed. From this point, one can see that increase of stock directly leads to outdated food (OutdatedFood), which is a kind of food waste itself. In the bottom part of CLD, the loops for leftovers are represented. The greater the Sales, the more EdibleLeftovers. Actions that should directly address EdibleLeftovers, and therefore, the more EdibleLeftovers, the greater need for these actions are transforming Edible into ReprocessedLeftovers, delivering DonationsToCharity, and serving Staffmeals from EdibleLeftovers. All those actions lead to a final decrease in the total FoodWaste. Additionally, it is important to decrease FoodWaste through customer behavior and encourage them to take PlateTakeovers (LeftoversTakenByCustomer decreasing total FoodWaste). Importantly, PlateLeftovers themselves increase with the SizeOfMeals. On the contrary to actions decreasing total FoodWaste (action leading to an increase of ReprocesedLeftovers, DonationsToCharity, StaffMeals, LeftoversTakenByCustomer), there are factors that increase total FoodWaste, i.e., NonEdibleLeftovers and PlateLeftovers.
The CLD includes many loops, most of which are balancing loops, because we focus on the analysis activities that will reduce a FoodWaste. The two most important loops for the purposes of this paper are from the HoReCa company’s operations point of view.
Balancing Loop 1 (B1). Growing Sales increases IngredientsStocks, which creates the risk of increasing OutdatedFood. This then in turn will increase FoodWaste. In contrast, the increased FoodWaste consequently lowers the Sales volume. For this reason, there is a balancing loop. The main conclusion of this analysis is that in the case of planning to increase sales, more precise IngredientsStocks control mechanisms should be implemented first. Here, an implementation of selected lean tools (e.g., kanban) can be helpful.
Balancing Loop 2 (B2). Growing Sales increases EdibleLeftovers, which contributes to increasing FoodWaste. This then in turn will decrease Sales. At the same time, in order to reduce EdibleLeftovers, they can be used as ReprocessedLeftovers, DonationsToCharity or StaffMeals, which will reduce FoodWaste. An important conclusion to be drawn from the analysis of such a loop is that by implementing ReprocessedLeftovers, DonationsToCharity or StaffMeals, we are not able to eliminate this type of FoodWaste—we are only able to reduce it. For this reason, from the company’s point of view, it may be more important to analyze the reasons for the creation of EdibleLeftovers (e.g., on the basis of the Ishikawa chart) than to introduce reduction mechanisms for EdibleLeftovers.
The diagram presents a model that could be of interest to HoReCa businesses considering ways that food waste reduction creates a positive overall impact on sales and eventual profitability of their enterprise. Combining the knowledge of interrelated factors with the management practices can help a business set reasonable goals, such as space layouts and simplified menus to improve their operations. The CLD could be used to define a roadmap for program improvements. In applying the model, practitioners could see clear relations, analyze feedback loops, plan and coordinate their actions accordingly.

3.3. Best Practices on the Macro Level

Implementation of the 2030 Agenda relies on actions that take place mainly at the national and sub-national level [63]. Any analyses of SDG interdependencies that will influence policymaking need to take a macro perspective. The complexity that derives from these interdependencies and the aforementioned urgency to achieve change requires a trans-disciplinary process that combines research results with policymaking. Eventually, policymakers need a rubric for thinking systematically about the many interactions to support their identification of the stakeholders of a proposition; i.e., which groups will be allies and which ones require negotiation. To make coherent policies and strategies—beyond simply synergies and trade-offs—they need up-to-date empirical knowledge on how the goals and interventions of one sector affect another positively or negatively [64].
To achieve an effective implementation, executive acts, policies and strategies for achieving individual goals adopted at the international level are necessary [65]. Individual programs will then be implemented at the national level by involving regional and/or local authorities. Especially on national and international levels, the SDG perspective could be taken into account as an indirect support for FW reduction initiatives related to resource efficiency and circular economy, e.g., [66,67,68] [NDCs, Farm to Fork Strategy, Circular Economy Package]. Food waste reduction policy may be connected with environmental policy statements and environmental targets such as energy and transport efficiency and recycling of waste. Additionally, guidelines for consumers can encourage climate-smarter food choices, such as meat reduction or promotion of local food or considering the greenhouse gas emissions for food production (e.g., reduction of meat consumption and production). However, it is not just the environmental pillar that should be taken into account by stakeholders, but also the economic and social pillars.
Activities at the macro level are mainly carried out and coordinated alone or in alliances by public authorities, non-governmental organizations and other types of organizations, e.g., schools, universities, etc. Such activities can be divided into two areas: soft and hard (Figure 3).
Soft activities focus on increasing awareness among society members and representatives of various organizational entities: enterprises, business environment institutions, academia and secondary schools, e.g., promotion of good nutrition practices in secondary schools [57]. These activities can be divided into passive and active. Passive mainly concerns passive influence on recipients, e.g., information campaigns: leaflets, actions in multimedia and mass media. Active requires active action, commitment, implementation of desired behaviors, e.g., implementation of biodegradable dishes or food collection [19]. In practice, much better results or even a synergy result will be obtained through a mix of different policies, e.g., passive awareness, gamification or passive awareness and community engagement provide a synergy effect of food waste reduction [46]. Soft actions should be initiated at the international and/or national levels, while regional and/or local authorities should be responsible for their implementation, as they have direct contact with society (people).
Hard activities can be divided into: legal regulations, e.g., requiring the use of selected solutions in business and agricultural activities or a ban on the use of selected solutions or behaviors; tax regulations, e.g., introducing tax breaks for enterprises, including farms or VAT reductions; dedicated support programs, e.g., financial support for enterprises for the purchase of clean technologies. Most of the hard activities should be carried out by government administration.
Often authorities are implementing sets of soft and hard activities [29]. Activities dedicated to FW reduction usually address society and/ or people; companies, including HoReCa companies; science, research and technology development organizations; schools, including primary, secondary and high schools; other institutions, including chambers of commerce and public authorities.

3.4. Analysis of the SDGs Related to Food Waste

There are a number of publications in which the relations between individual SDGs in the context of FW were analyzed [39,42,43]. Pradhan et al. [69] analyzed the SDG interactions to identify the synergies and trade-offs between them. They classified a significant positive correlation between a pair of SDG indicators as a synergy, i.e., progress in one goal promotes progress in another. A significant negative correlation was classified as a trade-off where progress in one goal hinders progress in another. Most trade-offs relate to a non-sustainable development paradigm that focuses on economic growth to generate human welfare at the expense of the environment and natural resources. They uncovered some global patterns among the SDGs based on positive and negative correlations between indicator pairs. For example, in their analysis, SDG 1 (No poverty) has a synergistic relationship with most of the other goals, whereas SDG 12 (Responsible consumption and production) is the goal most commonly associated with trade-offs. Sustainable Development Goal 12 is identified as conflicting with most other SDGs and is thereby non-supportive of sustainable development. They found that SDG 12 has negative correlations with 10 goals (SDGs 1–7, 9, 10, 17). Eventually, attainment of Agenda 2030 will greatly depend on whether synergies can be leveraged, and trade-offs identified and tackled.
As already indicated, Target 12.3 explicitly address the reduction of global food waste at retail and consumer levels and FW along production and supply chains. Malefors et al. [28] make a strong case for more robust measurements of current food waste statistics, without which it is not possible to ascertain that food waste has been halved. Additional targets that reinforce or are reinforced by 12.3 are given in (Table 4). However, this should not be considered as an exhaustive list of possible synergies or trade-offs.
These related targets reflect the observed asymmetry regarding FW within the food value chain. Developed countries have been found to be inclined to waste food later in the supply chain, whereas food waste in developing countries occurs early in the food chain [70]. In addition, there is also the problem of the severe imbalance between surplus food suitable for human consumption going to waste in the developed countries while people living in poverty (anywhere) or famine struck regions are unable to provide sufficient food. As an example, the topic of education broaches both the need for good research to provide the scientific foundations for sustainable agriculture or innovations in biodegradable packaging [71]. In addition, basic education worldwide is needed to increase the awareness of FW as a problem and provide advice on how to avoid FW in the home. HoReCa professionals will also benefit from sharing workable approaches to FW, such as those proposed by Secondi et al. [50] and based on research on food surplus redistribution reported by Galli et al. [72].

3.5. Framework

In general, all programs/activities are designed and tend to have a positive impact on FW reduction. However, additional research is needed to evaluate dependencies and impacts of specific programs and actions on FW reduction and other specific SDGs indirectly related to 12.3.
The framework (Figure 4) shows the traceability of best practices on the micro level for SDGs according to the food waste reduction. The crucial role in this framework is to have public authorities, especially for national and regional levels. Programs launched by public authorities are usually defined as a set of actions that consist of soft and hard program elements.
Legend:
A
Programs launched by public authorities (regional, national and international levels) addressed to HoReCa suppliers have indirect influence on FW reduction by HoReCa sector.
B
Suppliers’ performance in terms of FW is considered by authorities when deciding on best practices on macro level.
C
Suppliers’ performance in term of FW drives their own decisions on best practices on the micro level.
D
Available best practices on micro level and access to information about them affects suppliers’ performance in terms of FW.
E
Programs launched by authorities serve as guidelines for suppliers and consumers when thinking about best practices on the micro level.
F
Available best practices on the micro level and access to information about serving for a bottom-up formulation of best practices on macro level by authorities.
G
Programs launched by public authorities (regional, national and international levels) addressed to consumers, mainly related to awareness have indirect influence on FW reduction by HoReCa sector.
H
Consumer behavior is considered by authorities when deciding on macro level policies.
I
Consumer behavior is a driver for formulation of best practices (and worst as well) on micro level.
J
Consumer’ behavior is impacted by best available practices on micro level and information about them.

4. Discussion—Systems Engineering for SDGs in HoReCa

The SDGs are a network of interconnected goals used as a reference for the international community in working towards sustainable development [69,73,74]. The interdependencies of the SDGs in HoReCa described above are presented in Table 4, but questions raised by this analysis are: why do these relationships between SDGs in HoReCa matter and what is the relevance of a systems engineering approach? In this study, we conducted a systematic literature review and used a systems engineering approach by applying systems thinking to these results in the context of the SDGs. The SDGs act as a large system made up of smaller systems [75], i.e., a system of systems. Recent critiques of the SDGs highlight the importance of these interdependencies. Spangenberg [76] found them to be weak on agency, while requiring little from governments and nothing from business or consumers. The SDGs focus on the state and impact, ignoring conflict and stakeholder knowledge of the issues [77,78], as well as the pressures and drivers that counteract each other in competing impact categories in the same or different geographic contexts [76].
These critiques show areas where systems engineering can contribute. Systems engineering is quite advanced in methods for stakeholder inclusivity, and including stakeholders in actions directed towards implementing these goals, will help address the criticisms listed by Spangenberg [76] and others. The systems engineering community, and by this we specifically call attention to the progress and initiatives of the International Council for Systems Engineering (INCOSE), is actively venturing into the social domain, where the technical and social systems are being addressed as one [79]. This inclusivity of not only stakeholders, but also non-traditional engineering domains, places systems engineering practices in a key position to develop an inclusive, representative approach that addresses these goals as a holistic system for HoReCa enterprises.
Meeting or attempting to find ways to implement the SDGs in HoReCa lends itself naturally towards systems engineering because the SDGs are easily framed in a systems theoretical context [80], and capacity building to meet SDGs has been argued to require systems thinking [81]. This is illustrated with Table 4 and Figure 4 in the context of HoReCa. System archetypes [82,83] can be helpful to gain insight into patterns of behavior, especially in contexts of interconnected and competing goals [84]. In addition, SDGs intersect many societal domains, and a systems approach to investigating persistent social and environmental problems has been shown to help policymakers tackle the complexity associated with many intersected societal domains [85].

5. Conclusions

Food waste reduction should be analyzed holistically. It should be noted that there are many interdependencies between individual SDGs. These interdependencies should also be taken into account when policies, strategies and programs at the international, national, interregional, regional and local levels are defined. It requires a systemic approach not only with regard to the impact of one or more policies, but also considering the relationships between SDGs (also on sub-goal levels) which these policies address.

Author Contributions

Conceptualization, A.B. and B.G.; methodology, B.G., A.B. and E.P.; software, B.G. and A.B.; validation, A.B., B.G. and E.P.; formal analysis, A.B., B.G. and E.P.; investigation, A.B. and B.G.; resources, A.B. and B.G.; data curation, A.B. and B.G.; writing—original draft preparation, A.B. and B.G.; writing—review and editing, A.B., B.G. and E.P.; visualization, B.G. and A.B.; supervision, A.B. and B.G.; project administration, A.B. and B.G.; funding acquisition, A.B. and B.G. All authors have read and agreed to the published version of the manuscript.

Funding

The APC was covered from internal Warsaw University of Technology grant for management and quality sciences.

Institutional Review Board Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

Data available on request due privacy restrictions.

Acknowledgments

Authors would like to thank Cecilia Haskins from Norwegian University of Science and Technology for substantial support during paper preparation.

Conflicts of Interest

The authors declare no conflict of interest.

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Figure 1. Research methodology. Source: authors’ elaboration.
Figure 1. Research methodology. Source: authors’ elaboration.
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Figure 2. Conceptual causal loop diagram for food waste in HoReCa sector (drawn in AnyLogic8.2): Red points and arrows indicate a positive reinforcing effect, i.e., increased food waste; green points and arrows indicate a negative reinforcing effect, i.e., reduced food waste; other points and arrows illustrate contributing factors that lead to the respective effects. B1—Balancing Loop 1. B2—Balancing Loop 2.
Figure 2. Conceptual causal loop diagram for food waste in HoReCa sector (drawn in AnyLogic8.2): Red points and arrows indicate a positive reinforcing effect, i.e., increased food waste; green points and arrows indicate a negative reinforcing effect, i.e., reduced food waste; other points and arrows illustrate contributing factors that lead to the respective effects. B1—Balancing Loop 1. B2—Balancing Loop 2.
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Figure 3. Types of actions for decrease of FW on macro level. Legend: “…”—hybrid or not defined activities.
Figure 3. Types of actions for decrease of FW on macro level. Legend: “…”—hybrid or not defined activities.
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Figure 4. Conceptual causal loop diagram for SDG support from HoReCa best practices on food waste.
Figure 4. Conceptual causal loop diagram for SDG support from HoReCa best practices on food waste.
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Table
Table 1. Number of papers analyzed in particular steps.
Table 1. Number of papers analyzed in particular steps.
Sample CharacteristicsWoSScopusWoS + Scopus with No Repetitions
“Food waste” AND (HoReCa OR Hospitality OR “Food service”)145160N/A
Selected in first step after refinement103105N/A
Selected in second step after abstracts analysis191820
Food waste AND Sustainable Development Goal (FW AND SDG)262382N/A
FW AND SDG from 2015 in English232310N/A
FW AND SDG after abstracts analysis262728
Table
Table 2. Summary of papers on food waste (FW) and hotels, restaurants and catering (HoReCa).
Table 2. Summary of papers on food waste (FW) and hotels, restaurants and catering (HoReCa).
Ref.Year LevelSummary
Micro Macro
[16]2021X Analysis of responses from 206 managers of Brazilian food service companies. Findings focused on FW reduction.
[17]2021 XPresentation of sociodemographic and food consumption-related factors generated by tourists in the HoReCa sector. Insights into achieving sustainability objectives in national and international tourism sectors.
[18]2020X Description of best practices implemented by 3 HoReCa companies based on lean management approach and its impact on FW reduction.
[19]2020XXDescription of multi-stakeholder partnership program “Food waste Challenge”, involving 172 restaurants. Program focuses on a range of behavioral interventions.
[20]2020XXPaper focuses on the lifecycle assessment of 15 tapas meals, as well as analysis of nutritional quality of the meals and energy efficiency at the restaurant.
[21]2020 XAnalysis of social, economic and environmental impact of food waste reduction activities.
[22]2020 XAnalysis of restaurant food waste management practices in the UK and the Netherlands in case of FW management.
[23]2020X Findings for food waste measurement and waste reduction strategies in the different stages (pre-kitchen, in-kitchen and post-kitchen). Results based on the survey of almost 500 HoReCa managers.
[24]2020X Results of semi-structured interviews with 32 hotel employees and managers. Proposition of possible strategies for reducing FW addressed for restaurants and consumers.
[25]2019X Evaluation of interventions in two university canteens on their effectiveness to reduce visitors’ plate waste.
[14]2019XXEmpirical evidence for FW reduction in HoReCa sector in Malaysia. Proposition of FW prevention strategies related to companies’ operations activities and consumers’ social practices.
[26]2019XXAnalysis of direct-weighing data (from 164 restaurants) and its ecological footprint rather on macro-level.
[27]2019XXA case study of the restaurant activity in Bulgaria. Proposition of training programs for restaurateurs and public authorities.
[28]2019 XPresentation of research results for the quantification of food waste based on the data hospitality sector (1189 kitchens) in Sweden, Norway, Finland and Germany. Proposition of statistical measures for food waste tracking
[29]2018 XInsights of food waste generation factors in HoReCa sector at the national level.
[30]2018X Identification of waste management initiatives in the food service sector and evaluation of management practices for waste reduction by managers from food service sector companies.
[31]2017X Analysis based on managerial opinions of the role of menu design in shaping more responsible consumer choice and its impact on FW prevention.
[32]2017XXAnalysis based on 315 questionnaires from Italian HoReCa SMEs operating in the tourism sector. Presenting general strategies for both levels micro (company) and macro (regional authorities and commercial chambers).
[33]2016X Research results of the management staff of 45 restaurants/hotels. Proposition of strategies that involve the cooperation of the restaurant/hotel staff and the guests.
[34]2015X Presentation of a case study and implications and impact on prevention.
Table
Table 3. Summary of papers on FW and sustainable development goals.
Table 3. Summary of papers on FW and sustainable development goals.
Ref.YearLevelSDGsSummary
MicroMacro
[35]2021 X12.3Review of the food waste scenario, adverse effects, food waste policies and regulations in Bangladesh on national and municipalities levels.
[36]2021XX12.3Statistical analysis of 46 food waste items generated by households in the Buk-gu province of Daegu, South Korea.
[37]2021X 12.3Presentation of case study: primary school (in Valencia) pupils’ behavior change after intervention focused on food waste reduction (knowledge, awareness, attitudes).
[38]2020 X12.3Presentation of additional value of citizen science as a trigger for policy making on behavior change.
[39]2020 X1, 2, 6, 12, 13Estimation of carbon and water footprint of food. Comparison of the values of environmental footprint in the case of rational consumption of meat. Presentation of evaluation-obtained results by chemical engineering students.
[19]2020XX12, 17Description of multi-stakeholder partnership program “Food waste Challenge” involving 172 restaurants. Program focuses on a range of behavioral interventions.
[40]2020X 12.3Study of Covid-19 pandemic impact on food waste generation, financial costs and nutritional losses in Italian households.
[41]2020X 12.8Study of 19 passengers from 21 full-service flights.
[42]2020 X1.2, 1.3, 3.4, 4.7, 7.2, 8.2, 8.5, 9.4, 11.6, 12.3, 12.5, 13.3, 17.16, 17.17Food waste policy analysis provided by 40 cities across 16 European countries. Links between different types of policies provided and their impact on selected SDGs.
[21]2020 X12Analysis of social, economic and environmental impact of food waste reduction activities.
[43]2020 X2, 3, 8Presentation of the interrelations between SDGs, food access and waste also in the case of COVID-19 pandemic conditions.
[44]2020XX Presentation of quantification methodology of food waste in Swedish hospitals. Different types of waste defined (serving waste, plate waste, kitchen waste).
[45]2020 X12.3Results of research (in 2016 and 2019) of 165 Hungarian households based on FUSIONS methodology.
[46]2020XX12.3Presentation of research results on the application of different types of awareness techniques (passive approach (handouts), community engagement approach and gamification for 501 households.
[47]2019XX12.3Presentation of research using different approaches for self-reporting—passive (offline), proactive (online)—and evaluation of both approaches in case of food waste reduction.
[48]2019 X12.3Results of supply chain analysis, including production, consumption and utilization per different food groups according to the food waste reduction.
[49]2019 X12.3Results of questionnaire-based research in the UK. Based on the proposition of categorization of what is considered edible in the case of the quantification of food waste.
[28]2019 X12.3Presentation of research results for the quantification of food waste based on the data hospitality sector (1189 kitchens) in Sweden, Norway, Finland and Germany. Proposition of statistical measures for food waste tracking.
[50]2019X 12.3Results of the analysis of 411 individuals from central Italy. Identification of support programs related to FW awareness, business investment in innovations and digital solutions focused on FW reduction.
[51]2019 X12.3A footprint analysis of the food loss at the stage of vegetable production in Japan. Proposition of actions helping farmers to make a crop production and distribution plan.
[52]2019 X2, 12.3Proposition of the actions of food and nutrition security for supporting developing countries.
[53]2019XX Presentation of study results of 680 Danish canteens related to nutrition and service management focused on food waste reduction.
[54]2019XX12.3Review of interventions focused on food waste reduction in the hospitality sector and society (relating to nutrition behaviors).
[55]2018 X12.3Brief description of UK program designed to prevent food waste generation in the hospitality and food service sector launched in 2017.
[56]2018 X12.3Review of studies on food waste generation at the global and European scales.
[30]2018X Identification of waste management initiatives in the food service sector and evaluation of management practices for waste reduction by managers from food service sector companies.
[57]2018XX12Study of middle school students from 11 Polish schools. Analysis of food, nutrient, and energy waste and its impact on households’ food waste and nutrition and energy losses.
[58]2015XX Presentation of 17 interview results with 17 Swedish food retailer representatives.
Table
Table 4. Relationships between Target 12.3 and additional targets of SDGs from a HoReCa perspective.
Table 4. Relationships between Target 12.3 and additional targets of SDGs from a HoReCa perspective.
Interdependent SDG TargetsRationale—Synergy, Trade-off or Both with Relation to Target 12.3
4.7—By 2030, ensure that all learners acquire the knowledge and skills needed to promote sustainable development, including, among others, through education for sustainable development and sustainable lifestyles.Synergy: addressing consumer and retail food waste will require a re-education and increased awareness of the importance of food resources for both local and global sustainability.
12.8—By 2030, ensure that people everywhere have the relevant information and awareness for sustainable development and lifestyles in harmony with nature.
13.3— Improve education, awareness-raising and human and institutional capacity on climate change mitigation, adaptation, impact reduction and early warning.
8.2—Achieve higher levels of economic productivity through diversification, technological upgrading and innovation, including through a focus on high-value added and labor-intensive sectors.Both: food waste reduction will require the food service industries to look at packaging, transportation, and procedural innovations and improvements across the entire food value chain.
8.4—Improve progressively, through 2030, global resource efficiency in consumption and production and endeavor to decouple economic growth from environmental degradation, in accordance with the 10-Year Framework of Programs on Sustainable Consumption and Production, with developed countries taking the lead.
12.5—By 2030, substantially reduce waste generation through prevention, reduction, recycling and reuse.
2.4—By 2030, ensure sustainable food production systems and implement resilient agricultural practices that increase productivity and production, that help maintain ecosystems, that strengthen capacity for adaptation to climate change, extreme weather, drought, flooding and other disasters and that progressively improve land and soil quality.Both: if this target is addressed, the availability of food will be secured, but waste should still be reduced to improve availability to the less advantaged in society.
11.6—By 2030, reduce the adverse per capita environmental impact of cities, including by paying special attention to air quality and municipal and other waste management.Synergy: addressing this target will not reduce food waste, but it could help ensure a proper handling of food and other organic wastes.
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Buczacki, A.; Gładysz, B.; Palmer, E. HoReCa Food Waste and Sustainable Development Goals—A Systemic View. Sustainability 2021, 13, 5510. https://doi.org/10.3390/su13105510

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Buczacki A, Gładysz B, Palmer E. HoReCa Food Waste and Sustainable Development Goals—A Systemic View. Sustainability. 2021; 13(10):5510. https://doi.org/10.3390/su13105510

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Buczacki, Aleksander, Bartłomiej Gładysz, and Erika Palmer. 2021. "HoReCa Food Waste and Sustainable Development Goals—A Systemic View" Sustainability 13, no. 10: 5510. https://doi.org/10.3390/su13105510

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