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New Technologies on Microbiology of Traditionally Fermented Food

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Food Science and Technology".

Deadline for manuscript submissions: closed (31 August 2022) | Viewed by 3829

Special Issue Editor


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Guest Editor
College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
Interests: traditionally fermented foods; microbial community; multi-omics; environmental stresses; microbial physiology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Traditionally fermented foods, have been consumed by humans for thousands of years, and they are receiving increased attention by researchers, However, most fermented foods are produced by spontaneous fermentation, and the fermentation processes are still uncontrolled and the quality formation mechanisms remains unclear. With the development of new scientific techniques, new production processes are developed and applied during the manufacture of traditionally fermented foods. As a result, the microbiota and flavor related to the quality development are revealed gradually.

The purpose of this Special Issue is therefore to disseminate the new technologies and microbiology of traditionally fermented foods. Particular attention will be given to those studies that address new production process applied in fermented foods, microbial community involved in quality formation of fermented foods.

Prof. Dr. Chongde Wu
Guest Editor

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • traditionally fermented foods
  • manufacture of fermented foods
  • emerging technologies
  • microbial community
  • sensory and food quality
  • food fermentation

Published Papers (2 papers)

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Research

10 pages, 3586 KiB  
Article
Heme Dependent Catalase Conditionally Contributes to Oxygen Tolerance of Tetragenococcus halophilus Strains Isolated from Soy Sauce Moromi
by Jialian Li, Bo Wang, Jian Chen, Guocheng Du and Fang Fang
Appl. Sci. 2022, 12(16), 8039; https://doi.org/10.3390/app12168039 - 11 Aug 2022
Cited by 2 | Viewed by 1565
Abstract
Tetragenococcus halophilus strains are the halophilic lactic acid bacteria (LAB) that are present in microbial communities during soy sauce or other hyperosmotic foods’ fermentation. This species contributes to the formation of volatiles in fermented foods but may experience harsh conditions such as oxidative [...] Read more.
Tetragenococcus halophilus strains are the halophilic lactic acid bacteria (LAB) that are present in microbial communities during soy sauce or other hyperosmotic foods’ fermentation. This species contributes to the formation of volatiles in fermented foods but may experience harsh conditions such as oxidative stress and osmotic stress during fermentation. The characterization of the oxygen tolerance of T. halophilus and elaboration of its antioxidant mechanism are important for the selection of suitable LAB for food fermentation. In this work, the growth of T. halophilus strains isolated from soy sauce moromi under both aerobic and anaerobic conditions was compared, and the function of their antioxidant enzymes was investigated. These strains showed differences in oxidation resistance, and they all produce antioxidant enzymes including superoxide dismutase, peroxidase and glutathione reductase. Interestingly, genes encoding catalase (CAT) are present in the genome of T. halophilus strains, though some of them are pseudogenes. Catalase produced by T. halophilus belongs to the heme-dependent CAT, and its activity could only be detected in the presence of heme under aerobic condition. The CAT from T. halophilus conditionally contributes to resistance to hydrogen peroxide and oxidative stress. These results elucidated the possible antioxidant mechanism of T. halophilus and revealed the differences in the oxidative stress tolerance of T. halophilus strains. Full article
(This article belongs to the Special Issue New Technologies on Microbiology of Traditionally Fermented Food)
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14 pages, 2447 KiB  
Article
Evaluation of Bacterial Diversity and Quality Features of Traditional Sichuan Bacon from Different Geographical Region
by Song Wang, Xingjie Wang, Wanshu Pan, Aiping Liu, Shuliang Liu, Yong Yang and Likou Zou
Appl. Sci. 2021, 11(20), 9738; https://doi.org/10.3390/app11209738 - 19 Oct 2021
Cited by 8 | Viewed by 1642
Abstract
Sichuan bacon is one of the most popular types of Chinese bacon in the domestic market. High-throughput sequencing was used to characterize the bacterial diversity of 39 Sichuan bacon samples collected from 3 geographical regions. The results showed that the bacterial diversity of [...] Read more.
Sichuan bacon is one of the most popular types of Chinese bacon in the domestic market. High-throughput sequencing was used to characterize the bacterial diversity of 39 Sichuan bacon samples collected from 3 geographical regions. The results showed that the bacterial diversity of Sichuan bacon in different regions demonstrated certain specificity as well as similarity, and the shared OTUs were close to 81% of the total number in the basin group, mountain group, and plateau group. At the genus level, Staphylococcus is the most dominant genus among the three groups, covering 26.7%, 20.6%, and 22.7%, respectively. Beta diversity shows significant differences in bacterial compositions in different geographic regions, especially for Pseudomonas, Brochothrix, Lactobacillus, Lactococcus, and Enterococcus. Meanwhile, some physicochemical characteristics were analyzed, and a significant difference (p < 0.05) among the three regions was shown in the Aw, pH, and nitrite content, which were significantly correlated with undesired bacteria. This study provides insights into the understanding of the role of bacterial communities in the microbial safety and quality improvement of Sichuan bacon. Full article
(This article belongs to the Special Issue New Technologies on Microbiology of Traditionally Fermented Food)
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