Volatile organic compounds associated with milk spoilage by psychrotrophic bacteria
Volatile organic compounds associated with milk spoilage by psychrotrophic bacteria
复制标题
与嗜冷菌导致的牛奶变质相关的挥发性有机化合物
DOI：
10.1111/1471-0307.12485
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发表时间：
2018-08-01
影响因子：
4.4
通讯作者：
Brasca, Milena
中科院分区：
文献类型：
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作者：
Decimo, Marilu;Cabeza, Maria C.;Brasca, Milena
用顶空固相微萃取（HS-SPME）和气相色谱-质谱联用（GC/MS）研究了牛奶中嗜冷菌污染的挥发性有机物。共47个挥发性有机化合物（VOCs）属于7个化学组被确定在变质牛奶。突出了细菌菌株特有的挥发性有机化合物模式。3-甲基-1-丁醇、2-甲基-1-丙醇、3-羟基-2-丁酮、2，3-丁二酮、丁酸和己酸是评价牛奶腐败的潜在指标。
The volatile organic compounds of milk contaminated with psychrotrophic bacteria were studied by HS-SPME and GC/MS. Pseudomonas fluorescens PS14, Pseudomonas fragi PS55, Pseudomonas mosselii PS39, Pseudomonas rhodesiae PS62 and Serratia marcescens S92 were inoculated in sterilised milk (2.5% fat) stored at either 5 degrees C or 10 degrees C. A total of 47 volatile organic compounds (VOCs) belonging to seven chemical groups were identified in the spoiled milk. Volatile organic compound patterns peculiar to the inoculate bacterial strains were highlighted. 3-Methylbutan-1-ol, 2 methylpropan-1-ol, 3-hydroxybutan-2-one, butan-2,3-dione, butanoic and hexanoic acids were revealed as potential chemical spoilage indexes of milk spoilage due to the activity of the five psychrotrophic strains studied.