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Wu M, Gu C, Duan L, Yin P, Zhu T, Xu Y, Yin Q, Liu R, Ge Q, Yu H. Inoculation fermentation with Lactobacillus fermentum L28 and Staphylococcus epidermidis S24 for improving the protein degradation of air-dried goose. Food Chem 2024; 447:138955. [PMID: 38471279 DOI: 10.1016/j.foodchem.2024.138955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024]
Abstract
The inoculation fermentation technology was applied to the processing of dried cured goose to investigate the protein degradation. Lactobacillus fermentum (L), Staphylococcus epidermidis (S) and mixed strains (L + S) were individually inoculated into the whole goose before drying. We studied the degradation of protein in the air-dried period of goose. The results showed that compared with natural fermentation, inoculation fermentation significantly increased the content of non-protein nitrogen (14.85 mg/g NPN), proteolysis index (8.98% PI), myofibril fragmentation index (89.35 MFI) and total amount of free amino acids (1332.6 mg/g FAA) of dried cured goose. Electrophoresis revealed that the inoculation fermentation accelerated the degradation of macromolecular proteins and the accumulation of small molecular proteins. The degree of protein degradation in four groups of goose was in an order of L + S group > S group > L group > CK group. It suggested that inoculation fermentation could promote the degradation of myofibrillar proteins.
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Affiliation(s)
- Mangang Wu
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China.
| | - Chen Gu
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Likun Duan
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Peipei Yin
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Tianhao Zhu
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Yuyu Xu
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Qing Yin
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Rui Liu
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Qingfeng Ge
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Hai Yu
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China; Industrial Engineering Center for Huaiyang Cuisin of Jiangsu Province, Yangzhou University, Yangzhou 225127, China.
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Li XM, Che LH, Zhang WD, Huang QL, Li C, Xu BC. Insight into the autochthonous bacterial strains as starter cultures for improving the flavor profiles of dry-cured duck: Changes in microbial diversity and metabolic profiles. Food Chem 2024; 443:138446. [PMID: 38281415 DOI: 10.1016/j.foodchem.2024.138446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/28/2023] [Accepted: 01/12/2024] [Indexed: 01/30/2024]
Abstract
The purpose of this study was to reveal the effect of inoculating autochthonous bacterial strains (Lactobacillus and Staphylococcus simulans) on the flavor profiles, microbial community, and metabolites, and to elucidate the potential mechanism of flavor formation in dry-cured duck. The results indicated that the inoculation of bacterial strains could improve the amount of lactic acid bacteria and Staphylococcus and reduce the counts of Enterobacteria. There was a significant difference in flavor profiles between samples inoculated with different strains. Hexanal-D, acetone, 3-methyl-1-butanol-D, thiophene, hexanal-M, propanal, pentanal, (Z)-2-penten-1-ol and ethanol-D were the potential biomarkers. A total of 70 differential metabolites were screened and identified. Amino acid metabolism and lipid metabolism were the key pathways for the production of flavor and metabolites in dry-cured duck. The results of this study will improve our understanding of the mechanism of flavor formation regarding the inoculation of autochthonous starter cultures.
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Affiliation(s)
- Xiao-Min Li
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, Hefei University of Technology, Hefei 230009, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China
| | - Lie-Hua Che
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, Hefei University of Technology, Hefei 230009, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China
| | - Wen-di Zhang
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, Hefei University of Technology, Hefei 230009, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China
| | - Qian-Li Huang
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, Hefei University of Technology, Hefei 230009, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China
| | - Cong Li
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, Hefei University of Technology, Hefei 230009, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China
| | - Bao-Cai Xu
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, Hefei University of Technology, Hefei 230009, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China.
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Liang L, Ma Y, Jiang Z, Sam FE, Peng S, Li M, Wang J. Dynamic analysis of microbial communities and flavor properties in Merlot wines produced from inoculation and spontaneous fermentation. Food Res Int 2023; 164:112379. [PMID: 36737964 DOI: 10.1016/j.foodres.2022.112379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/10/2022] [Accepted: 12/24/2022] [Indexed: 12/29/2022]
Abstract
The microbiota is of great importance in forming flavor compounds and improving sensory characteristics during wine fermentation. Understanding microbial succession is critical for controlling its contribution to wine flavor with predictable sensory quality. In this study, microbial community composition and characteristic flavor compounds were identified during the inoculation fermentation (IF) and spontaneous fermentation (SF) to provide a basis for exploring the relationship between these microorganisms and volatile components. The results demonstrated that SF had higher fungal community diversity and lower bacterial community diversity than IF. Eleven (11) fungal and 10 bacterial genera (relative abundance > 0.1 %) were considered beneficial microbiota. Saccharomyces, Hanseniaspora, and Alternaria were the leading fungal genera in SF. Massilia, Nesterenkonia, and Halomonas were the predominant bacteria in IF, while Tatumella and Ochrobactrum were mainly from SF. In addition, the microbial community composition was reshaped via correlational analysis between microbiota succession and physicochemical properties, mainly attributed to the changes in environmental factors during fermentation. The SF wines had more aromatic higher alcohols, acetate esters, and terpenes. Also, the sensory evaluation showed that the SF wines were characterized by more fruity, floral, intense, and typical aromas. The associations between the microbial community and the volatile components indicated that the dominant species largely determined the characteristic flavor compounds during fermentation.
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Affiliation(s)
- Lihong Liang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; Gansu Key Laboratory of Viticulture and Enology, Lanzhou 730070, China
| | - Yuwen Ma
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; Gansu Key Laboratory of Viticulture and Enology, Lanzhou 730070, China
| | - Zhanzhan Jiang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; Gansu Key Laboratory of Viticulture and Enology, Lanzhou 730070, China
| | - Faisal Eudes Sam
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; Gansu Key Laboratory of Viticulture and Enology, Lanzhou 730070, China; College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shuai Peng
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; Gansu Key Laboratory of Viticulture and Enology, Lanzhou 730070, China
| | - Min Li
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; Gansu Key Laboratory of Viticulture and Enology, Lanzhou 730070, China
| | - Jing Wang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; Gansu Key Laboratory of Viticulture and Enology, Lanzhou 730070, China.
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