Exploitation of Yeasts and Mould Biodiversity to Improve Quality and Safety of Fermented Foods

A special issue of Foods (ISSN 2304-8158). This special issue belongs to the section "Food Microbiology".

Deadline for manuscript submissions: closed (15 October 2022) | Viewed by 4123

Special Issue Editors


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Guest Editor
Department Agraria, University “Mediterranea” of Reggio Calabria, Loc. Feo di Vito, Reggio Calabria, Italy
Interests: starter cultures; yeasts; lactic acid bacteria; microbial biodiversity; yeast micromanipulation; yeast biofilm; microalgae; waste reuse by anaerobic digestion

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Guest Editor
Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via R. Balzarini, 1-64100 Teramo, Italy
Interests: wine yeast; lactic acid bacteria; spoilage microbes; gene expression; molecular methods; biofilm; sparkling wine; table olives; biogenic amines

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Guest Editor
Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via R. Balzarini, 1-64100 Teramo, Italy
Interests: wine yeast; Saccharomyces cerevisiae; Kluyveromyces marxianus; non-Saccharomyces; yeast physiology; yeast flocculation; biofilm; biogenic amines
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Special Issue Information

Dear Colleagues,

In fermented foods, yeasts and moulds can act as virtuous or spoiler microorganisms according to the food system considered, and provide beneficial or detrimental outcomes to the quality and safety of the food/beverage. Consumers primarily demand for high-quality foods; on the other hand, they are ever more conscious of the safety aspects. A fermented food/beverage is the result of a complex microbial network, exchange of metabolites, and cross-talking by factors that enhance or inhibit microbial growth and functions. While yeast–bacteria interaction in fermented foods is well studied, little is known about yeast–yeast and yeast–mould interactions. Therefore, it appears interesting to explore this field considering both the use of cultures as fermenters and as biocontrol agents. We welcome both original articles and review articles.

Potential topics include but are not limited to the following:

  • Occurrence of yeasts and moulds associated with fermented foods;
  • Modern methodologies for the detection of fungi and their metabolites;
  • Yeast and mould cultures to improve food fermented quality;
  • Exploitation of mechanisms behind yeast–yeast and yeast–mould interactions;
  • Antimicrobial compounds to prevent fungal spoilage in foods and beverages;
  • Use of antagonistic yeasts or their metabolites as biocontrol agents in fermented foods.
Dr. Rossana Sidari
Dr. Giorgia Perpetuini
Dr. Rosanna Tofalo
Guest Editors

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Keywords

  • yeasts
  • moulds
  • starter cultures
  • spoilage
  • biocontrol
  • microbial interactions
  • detection methods
  • mycotoxins
  • quality
  • safety

Published Papers (2 papers)

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Research

15 pages, 1159 KiB  
Article
Contribution of Starmerella bacillaris and Oak Chips to Trebbiano d’Abruzzo Wine Volatile and Sensory Diversity
by Giorgia Perpetuini, Alessio Pio Rossetti, Noemi Battistelli, Camillo Zulli, Andrea Piva, Giuseppe Arfelli, Aldo Corsetti and Rosanna Tofalo
Foods 2023, 12(5), 1102; https://doi.org/10.3390/foods12051102 - 04 Mar 2023
Cited by 3 | Viewed by 1490
Abstract
In this study, six fermentation trials were carried out: co-inoculation and sequential inoculation of Saccharomyces cerevisiae and Starmerella bacillaris in the presence and absence of oak chips. Moreover, Starm. bacillaris strain was attached to the oak chips and co-inoculated or sequentially inoculated with [...] Read more.
In this study, six fermentation trials were carried out: co-inoculation and sequential inoculation of Saccharomyces cerevisiae and Starmerella bacillaris in the presence and absence of oak chips. Moreover, Starm. bacillaris strain was attached to the oak chips and co-inoculated or sequentially inoculated with S. cerevisiae. Wines fermented with Starm. bacillaris adhered to oak chips showed a higher concentration of glycerol (more than 6 g/L) than the others (about 5 g/L). These wines also showed a higher content of polyphenols (more than 300 g/L) than the others (about 200 g/L). The addition of oak chips induced an increase of yellow color (b* value of about 3). Oak-treated wines were characterized by a higher concentration of higher alcohols, esters and terpenes. Aldehydes, phenols and lactones were detected only in these wines, independently from the inoculation strategy. Significant differences (p < 0.05) were also observed in the sensory profiles. The fruity, toasty, astringency, and vanilla sensations were perceived as more intense in wines treated with oak chips. The white flower descriptor showed a higher score in wines fermented without chips. Oak surface-adhered Starm. bacillaris cells could be a good strategy to improve the volatile and sensory profile of Trebbiano d’Abruzzo wines. Full article
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12 pages, 3172 KiB  
Article
Influence of Different Aggregation States on Volatile Organic Compounds Released by Dairy Kluyveromyces marxianus Strains
by Giorgia Perpetuini, Fabrizia Tittarelli, Carlo Perla and Rosanna Tofalo
Foods 2022, 11(18), 2910; https://doi.org/10.3390/foods11182910 - 19 Sep 2022
Cited by 2 | Viewed by 1329
Abstract
Kluyveromyces marxianus has the ability to contribute to the aroma profile of foods and beverages since it is able to produce several volatile organic compounds (VOCs). In this study, 8 dairy K. marxianus strains, previously selected for their adhesion properties, were tested for [...] Read more.
Kluyveromyces marxianus has the ability to contribute to the aroma profile of foods and beverages since it is able to produce several volatile organic compounds (VOCs). In this study, 8 dairy K. marxianus strains, previously selected for their adhesion properties, were tested for VOCs production when grown in different conditions: planktonic, biofilm-detached, and MATS forming-cells. It was shown that biofilm-detached cells were mainly able to produce higher alcohols (64.57 mg/L), while esters were mainly produced by planktonic and MATS forming-cells (117.86 and 94.90 mg/L, respectively). Moreover, K. marxianus biofilm-detached cells were able to produce VOCs with flavor and odor impacts, such as ketons, phenols, and terpenes, which were not produced by planktonic cells. In addition, specific unique compounds were associated to the different conditions tested. Biofilm-detached cells were characterized by the production of 9 unique compounds, while planktonic and MATS forming-cells by 7 and 12, respectively. The obtained results should be exploited to modulate the volatilome of foods and beverages and improve the production of certain compounds at the industrial level. Further studies will be carried out to better understand the genetic mechanisms underlying the metabolic pathways activated under different conditions. Full article
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