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Characterization of a lactic acid bacteria using branched-chain amino acid transaminase and protease from Jinhua Ham and application in myofibrillar protein model
被引:22
作者:
Liu, Rui
[1
,2
]
Lu, Chenyan
[1
]
Wang, Yongyong
[1
]
Shen, Yinhan
[1
]
Ge, Qingfeng
[1
]
Wu, Mangang
[1
]
Xi, Jun
[3
]
Yu, Hai
[1
,4
]
Wu, Shenglong
[2
]
Bao, Wenbin
[2
]
Shan, Yanqin
[4
]
机构:
[1] Yangzhou Univ, Coll Food Sci & Engn, Ind Engn Ctr Huaiyang Cuisine Jiangsu Prov, Yangzhou 225127, Jiangsu, Peoples R China
[2] Yangzhou Univ, Coll Anim Sci & Technol, Jiangsu Key Lab Anim genet Breeding & Mol Design, Yangzhou 225009, Jiangsu, Peoples R China
[3] Jiangsu Changshou Grp Co Ltd, Rugao 226500, Jiangsu, Peoples R China
[4] Jiangsu Nat Foods Co Ltd, Xinghua 225700, Jiangsu, Peoples R China
来源:
基金:
中国国家自然科学基金;
关键词:
Branch chain aminotransferases;
Protease;
Branched-chain amino acids;
Characteristic metabolites;
Myofibrillar protein extract;
STAPHYLOCOCCUS-XYLOSUS;
STARTER CULTURE;
LACTOBACILLUS-SAKEI;
FERMENTED SAUSAGES;
FLAVOR FORMATION;
HYDROLYSIS;
CATABOLISM;
MEAT;
VOLATILES;
CARNOSUS;
D O I:
10.1016/j.meatsci.2022.108852
中图分类号:
TS2 [食品工业];
学科分类号:
0832 ;
摘要:
This study was to screen a strain with both branched-chain amino acid transaminase (BCAT) and protease activities for producing methyl-branched flavor compounds in a myofibrillar protein extract model. Lactic acid bacteria (LAB) was isolated from Jinhua ham and screened with BCAT activity by an electrochemical sensor and protease activity by the agar plate method. In the culture medium, strain L6 was selected with high utilization rate and characteristic metabolites content of branched-chain amino acids (BCAAs), and identified as Lactobacillus fermentum YZU-06 (L. fermentum). Compared with the previously reported L. plantarum, L. fermentum exhibited an excellent capacity of hydrolyzing myofibrillar protein with the higher contents of free amino acids, peptides and small molecular weight proteins. Moreover, L. fermentum group presented more BCAAs metabolites of 2-methylbutanal and 3-methylbutanal than that of L. plantarum group. In conclusion, L. fermentum YZU-06 is a promising starter culture to improve the flavor of fermented meat products.
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页数:10
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