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Food Microbiology Safety and Quality Control

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 (20 November 2024) | Viewed by 4010

Special Issue Editors


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Guest Editor
Ningbo Innovation Center, Zhejiang University, Ningbo 315100, China
Interests: food safety; non-thermal technologies

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Guest Editor
Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China
Interests: nonthermal processing technology; foodborne pathogens

Special Issue Information

Dear Colleagues,

Microbiological quality is a major concern in the food industry because of the acute risk to health posed by bacteria. Concerns have been raised repeatedly regarding the contamination of bacteria. Postharvesting is a critical control point with major effects on the chemical and microbiological characteristics of food. The prevention of microbial contamination in food requires good hygiene practices and hazard analysis and critical control points (HACCP) at all stages of production. This Special Issue mainly publish research concerning food contamination, food safety and quality control in food processing. Maintaining good microbiological quality of food is a key priority for both food suppliers and consumers. This Special Issue will publish high-quality, original research papers in the overlapping fields of:

  • Microbial contaminants and food safety;
  • Detection, sterilization and intervention methods;
  • Chemical and biochemical contaminants;
  • Food safety preventative control measures;
  • Food safety risk assessment.

Dr. Ruiling Lv
Dr. Xinyu Liao
Guest Editors

Manuscript Submission Information

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Keywords

  • food safety
  • foodborne pathogens
  • food control
  • non-thermal processing
  • micro risk
  • sterilization
  • rapid detection
  • foodborne diseases
  • antimicrobial

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Published Papers (3 papers)

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Research

14 pages, 1007 KiB  
Article
Optimization of Vacuum Freeze-Drying Process and Quality Evaluation of Stropharia rugosoannulata
by Zixuan Jia, Jianwei Zhou, Wenjun Wang, Donghong Liu, Xin Zheng, Mifen Hu, Yingying Jiang and Ruiling Lv
Appl. Sci. 2024, 14(22), 10158; https://doi.org/10.3390/app142210158 - 6 Nov 2024
Viewed by 508
Abstract
Stropharia rugosoannulata is a valuable medicinal and food fungus with high nutritive value. Freeze-drying addresses the storage and transportation challenges of fresh Stropharia rugosoannulata, expanding its market while preserving its flavor and quality more effectively than other drying methods. This study optimizes [...] Read more.
Stropharia rugosoannulata is a valuable medicinal and food fungus with high nutritive value. Freeze-drying addresses the storage and transportation challenges of fresh Stropharia rugosoannulata, expanding its market while preserving its flavor and quality more effectively than other drying methods. This study optimizes the vacuum freeze-drying process for Stropharia rugosoannulata using an orthogonal experiment method. The process parameters were optimized to determine their effects on the quality of the vacuum freeze-dried product, including pre-freezing temperature, pre-freezing time, and freeze-drying time. The optimal conditions were identified as a pre-freezing time of 60 h, a pre-freezing temperature of −80 °C, and a freeze-drying time of 72 h. The optimal product exhibited a bright color close to its natural state, with minimal browning and its natural white color maintained post-drying. During the drying process, the internal structure of the raw materials remained intact. After drying, the finished product retained its natural form, making it suitable for sale on the market. The soluble protein content of the vacuum freeze-dried Stropharia rugosoannulata reached 68 mg/g. Optimizing the freeze-drying process can better preserve the tissue structure and bioactive substances of Stropharia rugosoannulata, providing a reference for high-quality food processing and showing potential for sustainable development. Full article
(This article belongs to the Special Issue Food Microbiology Safety and Quality Control)
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14 pages, 2584 KiB  
Article
Positive Effect of Camelina Intercropping with Legumes on Soil Microbial Diversity by Applying NGS Analysis and Mobile Fluorescence Spectroscopy
by Marina Marcheva, Mariana Petkova, Vanya Slavova and Vladislav Popov
Appl. Sci. 2024, 14(19), 9046; https://doi.org/10.3390/app14199046 - 7 Oct 2024
Viewed by 960
Abstract
Camelina (Camelina sativa (L.) Crantz) is a valuable source of essential amino acids, especially sulphur-containing ones, which are generally lacking in leguminous crops, thus representing an alternative source of protein for both humans and farm animals. Rhizosphere soil samples from five experimental [...] Read more.
Camelina (Camelina sativa (L.) Crantz) is a valuable source of essential amino acids, especially sulphur-containing ones, which are generally lacking in leguminous crops, thus representing an alternative source of protein for both humans and farm animals. Rhizosphere soil samples from five experimental plots with mono- and mixed cultivations of three camelina cultivars, including two introduced varieties Cs1.Pro (Luna) and Cs2.Pro (Lenka) and one Bulgarian variety Cs3.Pro (local Bulgarian landrace) with variety 666 of vetch (Vicia sativa L.) (Cs3-Vs.Pro) and variety Mir of pea (Pisum sativum L.) (Cs3-Ps.Pro), were collected and analysed. The total DNA was isolated from the rhizosphere soils and the presence of the 16S rRNA gene was confirmed by amplification with the universal primer 16SV34. In the present study, the structure of the soil bacterial community in five different plots (Cs1.S.Pro, Cs2.S.Pro, Cs3.S.Pro, Cs3.Vs.S.Pro, and Cs3.Ps.S.Pro) where camelina was grown alone and by being intercropped with pea and vetch was analysed via a metagenomic approach. The number of observed species was highest in the local genotype of the camelina Cs3 grown alone, followed by soil from the intercropped variants Cs3-Vs and CsS-Ps. The soil bacterial communities differed between the sole cultivation of camelina and that grown with joint cultivation with vetch and peas, indicating that legumes considerably affected the growth and development of beneficial microorganisms by aspects such as nitrogen fixing, levels of nitrifying bacteria, and levels of phosphorus-dissolving bacteria, thus helping to provide better plant nutrition. The α-diversity indicated that bacterial communities in the rhizosphere were higher in soils intercropped with vetch and pea. The optical properties of cereals and legumes were determined by their energy structure, which includes both their occupied and free electronic energy levels and the energy levels of the atomic vibrations of the molecules or the crystal lattice. Full article
(This article belongs to the Special Issue Food Microbiology Safety and Quality Control)
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10 pages, 875 KiB  
Article
Quality and Safety of Dried Mushrooms Available at Retail Level
by Martina Ludewig, Julia Rattner, Johannes J. Künz, Martin Wagner and Beatrix Stessl
Appl. Sci. 2024, 14(5), 2208; https://doi.org/10.3390/app14052208 - 6 Mar 2024
Viewed by 1767
Abstract
Pathogenic microorganisms surviving in dry products have regularly led to recalls and foodborne disease outbreaks. Therefore, the microbiological quality of 61 dried mushrooms samples purchased online and in supermarkets were analyzed. Counts of aerobic mesophiles (AMCs), Enterobacteriaceae (EB), yeasts and molds, presumptive Bacillus [...] Read more.
Pathogenic microorganisms surviving in dry products have regularly led to recalls and foodborne disease outbreaks. Therefore, the microbiological quality of 61 dried mushrooms samples purchased online and in supermarkets were analyzed. Counts of aerobic mesophiles (AMCs), Enterobacteriaceae (EB), yeasts and molds, presumptive Bacillus cereus (pBC), the presence of Salmonella spp., and L. monocytogenes were investigated. Isolates of pBC were screened for their partial panC gene sequences and their toxin genes’ profiles. The microbiological quality of the dried mushrooms investigated in this study was generally found to be acceptable. Average AMCs, EB, yeasts, and molds were 3.9 log, 1.1 log, 1.6 log, and 1.5 log cfu/g, respectively. All mushroom samples tested negative for Salmonella spp. and L. monocytogenes. Presumptive BC were detected in 59.0% of the samples, but the contamination level was low (1.0 to 3.4 log cfu/g). None of the isolates were positive for the ces gene. Incomplete labeling was found in 45.9% of the samples, mainly in the form of missing heating instructions (31.1%) and/or country of origin (16.3%). Contamination by pathogens can occur in dried mushrooms. Adequate information on home cooking practices is essential to reduce the risk of foodborne illness to the consumer and to provide a safe food product. Full article
(This article belongs to the Special Issue Food Microbiology Safety and Quality Control)
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