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Keywords = European seed legislation

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15 pages, 2466 KiB  
Article
Morphological Profile and Seed Yield Ability of Polignano and Tiggiano Carrot Landraces: Steps Toward Registration as Conservation Varieties
by Rita Annunziata Accogli, Eugenio Cazzato, Dalila Bellomo, Pietro Santamaria and Massimiliano Renna
Horticulturae 2025, 11(2), 199; https://doi.org/10.3390/horticulturae11020199 - 13 Feb 2025
Cited by 1 | Viewed by 862
Abstract
Several Apulian (Southern Italy) vegetable landraces are considered at risk of genetic erosion, constituting an issue for the loss of important genetic traits. ‘Tiggiano’ and ‘Polignano’ carrots are two Apulian landraces, noteworthy for their historical, cultural, and agricultural significance. In this research, both [...] Read more.
Several Apulian (Southern Italy) vegetable landraces are considered at risk of genetic erosion, constituting an issue for the loss of important genetic traits. ‘Tiggiano’ and ‘Polignano’ carrots are two Apulian landraces, noteworthy for their historical, cultural, and agricultural significance. In this research, both the morphological traits and seed yield ability of these landraces were evaluated, aiming to potentially register them for seed commercialization as a tool of valorization. The data of morphological traits according to the ‘International Union for the Protection of New Varieties of Plants’ guideline evidenced a clear distinction between the two landraces. However, the great variability observed in certain characters represents an obstacle to their registration in the national variety register, except for the Conservation Varieties one. ‘Polignano’ and ‘Tiggiano’ carrots showed an average seed yield of about 63 and 106 g/plant, equating to about 1258 and 2116 kg/ha. Average seed germination rates were 79.7 and 85.8%, respectively, for ‘Polignano’ and ‘Tiggiano’ carrots. In conclusion, registering these local varieties as Conservation Varieties could enhance their appreciation, encourage sustainable cultivation, and help mitigate genetic erosion while boosting their economic and cultural value. Full article
(This article belongs to the Topic Mediterranean Biodiversity, 2nd Edition)
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90 pages, 4409 KiB  
Review
Current Trends of Polymer Materials’ Application in Agriculture
by Kamila Lewicka, Izabela Szymanek, Diana Rogacz, Magdalena Wrzalik, Jakub Łagiewka, Anna Nowik-Zając, Iwona Zawierucha, Sergiu Coseri, Ioan Puiu, Halina Falfushynska and Piotr Rychter
Sustainability 2024, 16(19), 8439; https://doi.org/10.3390/su16198439 - 27 Sep 2024
Cited by 15 | Viewed by 8023
Abstract
In light of the growing plastic waste problem worldwide, including in agriculture, this study focuses on the usefulness of both conventional, non-degradable plastics and environmentally friendly bioplastics in the agricultural sector. Although conventional plastic products are still essential in modern, even ecological agriculture, [...] Read more.
In light of the growing plastic waste problem worldwide, including in agriculture, this study focuses on the usefulness of both conventional, non-degradable plastics and environmentally friendly bioplastics in the agricultural sector. Although conventional plastic products are still essential in modern, even ecological agriculture, the increasing contamination by these materials, especially in a fragmented form, highlights the urgent need to search for alternative, easily biodegradable materials that could replace the non-degradable ones. According to the literature, polymers are widely used in agriculture for the preparation of agrochemicals (mostly fertilizers) with prolonged release. They also play a role as functional polymers against pests, serve as very useful super absorbents of water to improve crop health under drought conditions, and are commonly used as mulching films, membranes, mats, non-woven fabrics, protective nets, seed coatings, agrochemical packaging, or greenhouse coverings. This widespread application leads to the uncontrolled contamination of soil with disintegrated polymeric materials. Therefore, this study highlights the possible applications of bio-based materials as alternatives to conventional polyolefins or other environmentally persistent polymers. Bio-based polymers align with the strategy of innovative agricultural advancements, leading to more productive farming by reducing plastic contamination and adverse ecotoxicological impacts on aquatic and terrestrial organisms. On the other hand, advanced polymer membranes act as catching agents for agrochemicals, protecting against environmental intoxication. The global versatility of polymer applications in agriculture will not permit the elimination of already existing technologies involving polymers in the near future. However, in line with ecological trends in modern agriculture, more “green” polymers should be employed in this sector. Moreover, we highlight that more comprehensive legislative work on these aspects should be undertaken at the European Union level to guarantee environmental and climate protection. From the EU legislation point of view, the implementation of a unified, legally binding system on applications of bio-based, biodegradable, and compostable plastics should be a priority to be addressed. In this respect, the EU already demonstrates an initial action plan. Unfortunately, these are still projected directions for future EU policy, which require in-depth analysis. Full article
(This article belongs to the Section Sustainable Chemical Engineering and Technology)
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22 pages, 2347 KiB  
Review
The Conservation Varieties Regime: Its Past, Present and Future in the Protection and Commercialisation of Vegetable Landraces in Europe
by Adriano Didonna, Riccardo Bocci, Massimiliano Renna and Pietro Santamaria
Horticulturae 2024, 10(8), 877; https://doi.org/10.3390/horticulturae10080877 - 19 Aug 2024
Cited by 4 | Viewed by 2760
Abstract
In 1998, the European Union aimed to make the official Common European Catalogue of Plant Varieties more flexible and to mitigate the decline of agricultural biodiversity in European rural areas by introducing the Conservation Varieties Regime (CVR): a set of rules pertaining to [...] Read more.
In 1998, the European Union aimed to make the official Common European Catalogue of Plant Varieties more flexible and to mitigate the decline of agricultural biodiversity in European rural areas by introducing the Conservation Varieties Regime (CVR): a set of rules pertaining to local and/or traditional varieties cultivated in specific regions that are at risk of genetic erosion. This initiative was intended to permit the sale of those varieties that do not fully meet the distinctness, uniformity and stability (DUS) criteria required for the registration of standard varieties in the Common European Catalogue. In this review, we examine the impact of establishing the CVR 25 years after its first definition. As of the date of data collection, 191 conservation varieties were registered throughout Europe, representing only 0.88% of the total number of varieties included in the Common Catalogue. The most important countries are Spain, Italy and Croatia, which have, respectively, 57, 43 and 26 conservation varieties. The case study from Italy highlights that the CVR is poorly structured and is characterised by the initiatives of individual entities that take it upon themselves to protect and/or promote specific vegetable varieties. In this review, we discuss such data in relation to the protection and commercialisation of vegetable landraces in Europe. Overall, the CVR has failed to promote and enforce a dedicated market for all those varieties excluded from registration in the Common Catalogue due to DUS requirements. Full article
(This article belongs to the Topic Mediterranean Biodiversity)
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13 pages, 1188 KiB  
Article
Securing Commitments from Stakeholders in 10 EU Member States—The Organic Seed Declaration to Foster Stakeholder Involvement
by Freya Schäfer, Kaja Gutzen, Maaike Raaijmakers, Katharina Meyer, Xenia Gatzert, Martin Sommer, Ágnes Bruszik and Monika M. Messmer
Sustainability 2022, 14(15), 9260; https://doi.org/10.3390/su14159260 - 28 Jul 2022
Cited by 1 | Viewed by 1778
Abstract
The new European organic regulation 2018/848 aims to phase out the use of non-organic seeds in organic farming by 2036. At present, achieving this goal in countries with a poorly developed organic seed sector is difficult, and therefore there is a great need [...] Read more.
The new European organic regulation 2018/848 aims to phase out the use of non-organic seeds in organic farming by 2036. At present, achieving this goal in countries with a poorly developed organic seed sector is difficult, and therefore there is a great need to increase organic seed supply by promoting the development of the organic seed sector in Europe. This paper presents a conceptual framework to secure voluntary stakeholder involvement in the process of a gradual increase in the supply of organic seeds for organic farming. Stakeholders showed a high motivation to commit to concrete action points for moving forward. In addition, further actors were involved in the fulfillment of the commitments, a sign of a positive network effect in favor of organic seed production and use. The study indicates application potential and can complement mandatory policy instruments. Further progress monitoring is necessary to ensure that established structures maintain their function, and to keep the shared sense of responsibility alive. Full article
(This article belongs to the Special Issue Breeding and Seed Sector Innovations for Organic Food Systems)
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17 pages, 3504 KiB  
Article
Starch Nanocomposite Films: Migration Studies of Nanoparticles to Food Simulants and Bio-Disintegration in Soil
by Florencia Ortega, Pablo Sobral, Jorge L. Jios, Valeria B. Arce and María Alejandra García
Polymers 2022, 14(9), 1636; https://doi.org/10.3390/polym14091636 - 19 Apr 2022
Cited by 12 | Viewed by 3364
Abstract
In this work, films containing AgNPs were obtained by different green synthesis techniques (AgNP in situ and AgNP L). The inclusion of nanoparticles in the starch matrix improved both mechanical and barrier properties. The migration of AgNPs from the nanocomposite material to three [...] Read more.
In this work, films containing AgNPs were obtained by different green synthesis techniques (AgNP in situ and AgNP L). The inclusion of nanoparticles in the starch matrix improved both mechanical and barrier properties. The migration of AgNPs from the nanocomposite material to three food simulants (water, 3% v/v acetic acid and 15% v/v ethanol) was studied. The experimental data were fitted by using different widely accepted mathematical models (Fickian, Ritger and Peppas, and Weibull), indicating that the AgNP migration followed a complex mechanism. The silver concentration (mg Ag per kg of simulant) that was released from the nanocomposite films was higher for the samples with AgNPs in situ than for those containing AgNP L. Likewise, the maximum release value (0.141 mg/dm2 for AgNPs in situ in acetic acid simulant) was lower than the limits proposed by the legislation (European Commission and MERCOSUR; 10 and 8 mg/dm2, respectively). The replacement of conventional plastic materials by biodegradable ones requires the evaluation of bio-disintegration tests in soil. In this sense, a period of 90 days was necessary to obtain ≥50% weight loss in both nanocomposite films. Additionally, the bio-disintegration of the samples did not contribute with phytotoxic compounds to the soil, allowing the germination of fast-growing seeds. Full article
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20 pages, 1440 KiB  
Perspective
Food Safety Governance and Guardianship: The Role of the Private Sector in Addressing the EU Ethylene Oxide Incident
by Aleksandra Kowalska and Louise Manning
Foods 2022, 11(2), 204; https://doi.org/10.3390/foods11020204 - 12 Jan 2022
Cited by 26 | Viewed by 5794
Abstract
Sesame seeds within the European Union (EU) are classified as foods not of animal origin. Two food safety issues associated with sesame seeds have emerged in recent years, i.e., Salmonella contamination and the presence of ethylene oxide. Fumigation with ethylene oxide to reduce [...] Read more.
Sesame seeds within the European Union (EU) are classified as foods not of animal origin. Two food safety issues associated with sesame seeds have emerged in recent years, i.e., Salmonella contamination and the presence of ethylene oxide. Fumigation with ethylene oxide to reduce Salmonella in seeds and spices is not approved in the EU, so its presence in sesame seeds from India was a sentinel incident sparking multiple trans-European product recalls between 2020–2021. Following an interpretivist approach, this study utilises academic and grey sources including data from the EU Rapid Alert System for Food and Feed (RASFF) database to inform a critical appraisal of current EU foods not of animal origin legislation and associated governance structures and surveillance programs. This is of particular importance as consumers are encouraged towards plant-based diets. This study shows the importance of collaborative governance utilizing data from company testing and audits as well as official regulatory controls to define the depth and breadth of a given incident in Europe. The development of reflexive governance supported by the newest technology (e.g., blockchain) might be of value in public–private models of food safety governance. This study contributes to the literature on the adoption of risk-based food safety regulation and the associated hybrid public–private models of food safety governance where both regulators and private organizations play a vital role in assuring public health. Full article
(This article belongs to the Section Plant Foods)
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20 pages, 1309 KiB  
Article
Marketing Farmers’ Varieties in Europe: Encouraging Pathways with Missing Links for the Recognition and Support of Farmer Seed Systems
by Fulya Batur, Riccardo Bocci and Béla Bartha
Agronomy 2021, 11(11), 2159; https://doi.org/10.3390/agronomy11112159 - 27 Oct 2021
Cited by 15 | Viewed by 3713
Abstract
Farmer seed systems come in many shades: Conserving, producing, and using diverse plant material for different motives and purposes, whether the conservation or selection of locally adapted plant varieties and populations, or the safeguard of social bonds to secure economic stability and integration [...] Read more.
Farmer seed systems come in many shades: Conserving, producing, and using diverse plant material for different motives and purposes, whether the conservation or selection of locally adapted plant varieties and populations, or the safeguard of social bonds to secure economic stability and integration into rural communities. In Europe, strict seed marketing rules, by viewing any exchange of seeds as commercial exploitation, have first outlawed these farmer seed systems and the varieties conserved and developed in these systems, before carving out limited space for them as derogations to the main regime that remains based on mandatory variety registration and certified seed production. Examining these spaces in the legislation of the European Union (‘EU’) and Switzerland, along with their practical implications on the ground, the article shows the conceptual shortcomings of the EU legislation to fully address all the characteristics of farmer seed systems, especially to recognize farmers’ innovation. It exposes the need to carefully define, assess and adjust the underlying objectives of the future EU legislative effort to register farmers’ varieties or allow for their exchange, to fully represent and address the complex socio-economic values and diversity of farmer seed systems. The success of these endeavors will lie in the truthful representation, but also the engagement of farmers and social actors that not only conserve, but also dynamically manage agrobiodiversity. Full article
(This article belongs to the Special Issue The Role of Policies in Plant Breeding—Rights and Obligations)
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14 pages, 250 KiB  
Article
Law-Driven Innovation in Cereal Varieties: The Role of Plant Variety Protection and Seed Marketing Legislation in the European Union
by Serena Mariani
Sustainability 2021, 13(14), 8049; https://doi.org/10.3390/su13148049 - 19 Jul 2021
Cited by 4 | Viewed by 3086
Abstract
The aim of this paper is to investigate the role of EU legislation in shaping innovation in cereal varieties. The research focuses on two fields of law and their relationship, i.e., intellectual property and agricultural law. More specifically, the normative legal investigation concerns [...] Read more.
The aim of this paper is to investigate the role of EU legislation in shaping innovation in cereal varieties. The research focuses on two fields of law and their relationship, i.e., intellectual property and agricultural law. More specifically, the normative legal investigation concerns the role played by Community plant variety protection and the EU legislation on the marketing of seed and plant propagating material in shaping innovation and stimulating plant breeding of new cereal varieties. The focus is on cereal varieties because innovation in this field has a great socio-economic impact, as well as strategic scientific and environmental implications. Breeding new cereal varieties is essential for the competitiveness of the seed and agricultural sector of the EU, and it can contribute to food security and the achievement of sustainable development goals. The study finds that it is necessary to simplify the existing legal framework by coordinating intellectual property and agricultural law, providing for legislative review and better coherence in order to effectively shape innovation and meet the changing demands of society and the sustainability challenges. Full article
(This article belongs to the Special Issue Agricultural Innovation and Sustainable Development)
18 pages, 2395 KiB  
Article
Fibre and Seed Productivity of Industrial Hemp (Cannabis sativa L.) Varieties under Mediterranean Conditions
by Eleni Tsaliki, Apostolos Kalivas, Zofija Jankauskiene, Maria Irakli, Catherine Cook, Ioannis Grigoriadis, Ioannis Panoras, Ioannis Vasilakoglou and Kitsios Dhima
Agronomy 2021, 11(1), 171; https://doi.org/10.3390/agronomy11010171 - 18 Jan 2021
Cited by 52 | Viewed by 9276
Abstract
Farmers’ interest in renewable raw materials such as hemp (Cannabis sativa L.) fibres has recently increased, but hemp productivity is strongly affected by genotype and environment conditions. A 3-year field experiment was conducted under Mediterranean environment in northern Greece to evaluate the [...] Read more.
Farmers’ interest in renewable raw materials such as hemp (Cannabis sativa L.) fibres has recently increased, but hemp productivity is strongly affected by genotype and environment conditions. A 3-year field experiment was conducted under Mediterranean environment in northern Greece to evaluate the productivity (regarding fibres and seeds) of six monoecious hemp varieties. The vars. Futura 75 and Bialobrzeskie provided the greatest (p < 0.01) fibre productivity (4.57 and 4.27 t ha−1, respectively), which were 77.1% and 65.5%, respectively, greater than that of the least productive var. Fedora 17. However, the vars. Santhica 27, Tygra and Bialobrzeskie provided the highest (p < 0.05) seed yield (2.7, 2.9 and 2.6 t ha−1, respectively), which were 28.6%, 38.1% and 23.8%, respectively, greater than that of the least productive var. Futura 75. Hemp fibre yield was strongly positively correlated with total biomass (R2 = 0.8612) and stem biomass yield (R2 = 0.9742), while it was inversely correlated with fibre strength (R2 = 0.424). Hemp seed yield was not correlated with the hemp plant density, height, total biomass or stem biomass yield. The six hemp genotypes evaluated in the study had Δ9-tetrahydrocannabinol (THC) content lower than 0.2% satisfying the European legislation requirements for industrial hemp varieties. The results of the study indicated that, under Mediterranean conditions (northern Greece), the var. Bialobrzeskie showed high productivity, as averaged across years, for both fibres and seeds. This result is very helpful for farmers which should prefer hemp varieties of dual-purpose production (stems and inflorescences or stems and seeds) adapted best to their local environment. Full article
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22 pages, 2974 KiB  
Article
Peasant Seeds in France: Fostering A More Resilient Agriculture
by Camille Gevers, Helena F.M.W. van Rijswick and Julia Swart
Sustainability 2019, 11(11), 3014; https://doi.org/10.3390/su11113014 - 28 May 2019
Cited by 11 | Viewed by 4795
Abstract
The profitability of the French agricultural sector has fallen over the last two decades, leading to the suggestion of a “rupture in technical progress”. Additionally, the intellectual property regime in force has contributed to the erosion of the cultivated biodiversity, limiting plant resiliency [...] Read more.
The profitability of the French agricultural sector has fallen over the last two decades, leading to the suggestion of a “rupture in technical progress”. Additionally, the intellectual property regime in force has contributed to the erosion of the cultivated biodiversity, limiting plant resiliency to climate change and other hazards. In the face of these challenges, agroecological farming practices are a viable alternative. This paper investigates the positive and negative aspects associated with the development of alternative seed procurement networks in France. The findings indicate that peasant seed networks can effectively contribute to overcoming many of the structural blockages with which French agriculture is confronted, but that yield concerns; higher information and supervisory costs, as well as the unfavourable legislative context, constitute key challenges to their development. However, these could be partially or totally eliminated if adequate policies are implemented. In this regard, the recommendations are to: (i) strengthen the dialogue with farmers in the shaping of policies related to the use of plant genetic resources; (ii) abrogate the “obligatory voluntary contribution” on farm-saved seeds; (iii) diversify the collection of Centres for Biological Resources, increase their number, and democratize their access; (iv) harmonize the French and European regime on intellectual property; and (v) encourage participatory research. Full article
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15 pages, 1620 KiB  
Article
Data Analyses and Modelling for Risk Based Monitoring of Mycotoxins in Animal Feed
by H.J. (Ine) Van der Fels-Klerx, Paulien Adamse, Ans Punt and Esther D. Van Asselt
Toxins 2018, 10(2), 54; https://doi.org/10.3390/toxins10020054 - 26 Jan 2018
Cited by 21 | Viewed by 5411
Abstract
Following legislation, European Member States should have multi-annual control programs for contaminants, such as for mycotoxins, in feed and food. These programs need to be risk based implying the checks are regular and proportional to the estimated risk for animal and human health. [...] Read more.
Following legislation, European Member States should have multi-annual control programs for contaminants, such as for mycotoxins, in feed and food. These programs need to be risk based implying the checks are regular and proportional to the estimated risk for animal and human health. This study aimed to prioritize feed products in the Netherlands for deoxynivalenol and aflatoxin B1 monitoring. Historical mycotoxin monitoring results from the period 2007–2016 were combined with data from other sources. Based on occurrence, groundnuts had high priority for aflatoxin B1 monitoring; some feed materials (maize and maize products and several oil seed products) and complete/complementary feed excluding dairy cattle and young animals had medium priority; and all other animal feeds and feed materials had low priority. For deoxynivalenol, maize by-products had a high priority, complete and complementary feed for pigs had a medium priority and all other feed and feed materials a low priority. Also including health consequence estimations showed that feed materials that ranked highest for aflatoxin B1 included sunflower seed and palmkernel expeller/extracts and maize. For deoxynivalenol, maize products were ranked highest, followed by various small grain cereals (products); all other feed materials were of lower concern. Results of this study have proven to be useful in setting up the annual risk based control program for mycotoxins in animal feed and feed materials. Full article
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28 pages, 49792 KiB  
Article
Dicotyledon Weed Quantification Algorithm for Selective Herbicide Application in Maize Crops
by Morten Stigaard Laursen, Rasmus Nyholm Jørgensen, Henrik Skov Midtiby, Kjeld Jensen, Martin Peter Christiansen, Thomas Mosgaard Giselsson, Anders Krogh Mortensen and Peter Kryger Jensen
Sensors 2016, 16(11), 1848; https://doi.org/10.3390/s16111848 - 4 Nov 2016
Cited by 23 | Viewed by 8026
Abstract
The stricter legislation within the European Union for the regulation of herbicides that are prone to leaching causes a greater economic burden on the agricultural industry through taxation. Owing to the increased economic burden, research in reducing herbicide usage has been prompted. High-resolution [...] Read more.
The stricter legislation within the European Union for the regulation of herbicides that are prone to leaching causes a greater economic burden on the agricultural industry through taxation. Owing to the increased economic burden, research in reducing herbicide usage has been prompted. High-resolution images from digital cameras support the studying of plant characteristics. These images can also be utilized to analyze shape and texture characteristics for weed identification. Instead of detecting weed patches, weed density can be estimated at a sub-patch level, through which even the identification of a single plant is possible. The aim of this study is to adapt the monocot and dicot coverage ratio vision (MoDiCoVi) algorithm to estimate dicotyledon leaf cover, perform grid spraying in real time, and present initial results in terms of potential herbicide savings in maize. The authors designed and executed an automated, large-scale field trial supported by the Armadillo autonomous tool carrier robot. The field trial consisted of 299 maize plots. Half of the plots (parcels) were planned with additional seeded weeds; the other half were planned with naturally occurring weeds. The in-situ evaluation showed that, compared to conventional broadcast spraying, the proposed method can reduce herbicide usage by 65% without measurable loss in biological effect. Full article
(This article belongs to the Special Issue Vision-Based Sensors in Field Robotics)
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22 pages, 734 KiB  
Review
Recovery of Biomolecules from Food Wastes — A Review
by Antonietta Baiano
Molecules 2014, 19(9), 14821-14842; https://doi.org/10.3390/molecules190914821 - 17 Sep 2014
Cited by 403 | Viewed by 24615
Abstract
Food wastes are produced by a variety of sources, ranging from agricultural operations to household consumption. About 38% occurs during food processing. At present, the European Union legislation encourages the exploitation of co-products. This valorisation can be achieved through the extraction of high-value [...] Read more.
Food wastes are produced by a variety of sources, ranging from agricultural operations to household consumption. About 38% occurs during food processing. At present, the European Union legislation encourages the exploitation of co-products. This valorisation can be achieved through the extraction of high-value components such as proteins, polysaccharides, fibres, flavour compounds, and phytochemicals, which can be re-used as nutritionally and pharmacologically functional ingredients. Extraction can proceed according to solid-liquid extraction, Soxhlet extraction, pressurized fluid extraction, supercritical fluid extraction, ultrasound-assisted extraction, microwave-assisted extraction, pulsed electric field extraction, and enzyme-assisted extraction. Nevertheless, these techniques cannot be used indiscriminately and their choice depends on the type of biomolecules and matrix, the scale processing (laboratory or industrial), the ratio between production costs and economic values of the compounds to be extracted. The vegetable wastes include trimmings, peelings, stems, seeds, shells, bran, residues remaining after extraction of oil, starch, sugar, and juice. The animal-derived wastes include wastes from bred animals, wastes from seafood, wastes from dairy processing. The recovered biomolecules and by-products can be used to produce functional foods or as adjuvants in food processing or in medicinal and pharmaceutical preparations. This work is an overview of the type and amounts of food wastes; food waste legislation; conventional and novel techniques suitable for extracting biomolecules; food, medicinal and pharmaceutical uses of the recovered biomolecules and by-products, and future trends in these areas. Full article
(This article belongs to the Section Natural Products Chemistry)
21 pages, 1855 KiB  
Article
Phenotypic Changes in Different Spinach Varieties Grown and Selected under Organic Conditions
by Estelle Serpolay, Nicolas Schermann, Julie Dawson, Edith T. Lammerts Van Bueren, Isabelle Goldringer and Véronique Chable
Sustainability 2011, 3(9), 1616-1636; https://doi.org/10.3390/su3091616 - 23 Sep 2011
Cited by 12 | Viewed by 12554
Abstract
Organic and low-input agriculture needs flexible varieties that can buffer environmental stress and adapt to the needs of farmers. We implemented an experiment to investigate the evolutionary capacities of a sample of spinach (Spinacia oleracea L.) population varieties for a number of [...] Read more.
Organic and low-input agriculture needs flexible varieties that can buffer environmental stress and adapt to the needs of farmers. We implemented an experiment to investigate the evolutionary capacities of a sample of spinach (Spinacia oleracea L.) population varieties for a number of phenotypic traits. Three farmers cultivated, selected and multiplied one or several populations over two years on their farms. The third year, the versions of the varieties cultivated and selected by the different farmers were compared to the original seed lots they had been given. After two cycles of cultivation and on-farm mass selection, all the observed varieties showed significant phenotypic changes (differences between the original version and the version cultivated by farmers) for morphological and phenological traits. When the divergence among versions within varieties was studied, the results show that the varieties conserved their identity, except for one variety, which evolved in such a way that it may now be considered two different varieties. The heterogeneity of the population varieties was assessed in comparison with a commercial F1 hybrid used as control, and we found no specific differences in phenotypic diversity between the hybrid and population varieties. The phenotypic changes shown by the population varieties in response to on-farm cultivation and selection could be useful for the development of specific adaptation. These results call into question the current European seed legislation and the requirements of phenotypic stability for conservation varieties. Full article
(This article belongs to the Special Issue Plant Breeding for Sustainable Agriculture)
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