共 37 条
Production of characteristic volatile markers and their relation to Staphylococcus aureus growth status in pork
被引:18
作者:
Hu, K. L.
[1
,4
]
Yu, X. Q.
[2
,5
]
Chen, J.
[1
,4
]
Tang, J. N.
[1
,4
]
Wang, L. Z.
[3
,6
]
Li, Y. M.
[1
,4
]
Tang, C.
[1
,4
]
机构:
[1] Southwest Minzu Univ, Coll Life Sci & Technol, Chengdu, Sichuan, Peoples R China
[2] Sichuan Inst Food & Drug Control, Chengdu, Sichuan, Peoples R China
[3] Thermo Fisher Sci Ltd Corp, Chengdu, Sichuan, Peoples R China
[4] South Sect 4 1th Ring Rd, Chengdu, Sichuan, Peoples R China
[5] 8 Xinwen Rd, Chengdu, Sichuan, Peoples R China
[6] Jinjiang Int Bldg,Linjiang West Rd, Chengdu, Sichuan, Peoples R China
来源:
关键词:
Staphylococcus aureus;
Pork;
Bacterial volatile compounds;
Growth;
Correlation;
ORGANIC-COMPOUNDS;
ESCHERICHIA-COLI;
MEAT SPOILAGE;
CONTAMINATION;
SWINE;
D O I:
10.1016/j.meatsci.2019.107956
中图分类号:
TS2 [食品工业];
学科分类号:
0832 ;
摘要:
The 3-methyl-butanal and 3-methyl-butanoic acid are known as fingerprint compounds from Staphylococcus aureus. In this study, we investigated production of these two volatile biomarkers and their correlation to S. aureus growth in pork. Both 3-methyl-butanal and 3-methyl-butanoic acid presented high specificity for S. aureus in either media or pork. In sterile minced pork and pork broth, production of volatile biomarkers and the growth of S. aureus were significantly correlated for most single cultures. However, for mixed cultures, only 3-methyl-butanoic acid indicated correlations with growth of S. aureus. Similar trending was also discovered in raw pork, where production of 3-methyl-butanoic acid was significantly correlated with the growth of S. aureus, but not for 3-methyl-butanal. In summary, 3-methyl-butanoic acid was a more stable metabolic marker than 3-methyl-butanal which could be used as an indicator for the presence of S. aureus in pork. This rapid, convenient and cost-effective detection approach could be applied in meat industry to achieve specific detection of S. aureus.
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页数:9
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