Survival and growth of Vibrio cholerae 01, Salmonella typhi, and Escherichia coli O157:H7 in alfalfa sprouts

被引:49
作者
Castro-Rosas, J [1 ]
Escartín, EF [1 ]
机构
[1] Univ Autonoma Queretaro, Fac Quim, Queretaro 76010, Qro, Mexico
关键词
alfalfa sprouts; food safety; Salmonella typhi; Vibrio cholerae; E.coli O157 : H7;
D O I
10.1111/j.1365-2621.2000.tb15973.x
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
The survival and growth of Vibrio cholerae O1, Salmonella typhi, and Escherichia coli O157:H7 during germination and sprouting of disinfected alfalfa seeds and alfalfa sprouts was determined. All pathogens showed ability to grow during germination and sprouting, reaching counts of approximately 6.0 log(10) CFU/g after 24 h. No growth was observed for any pathogen when the sprouts were inoculated after 24 h of seed germination. At this time, the background microflora was abundant. Numbers of pathogens inoculated on alfalfa sprouts decreased less than 1 log10 CFU/g over 15 d of refrigeration. Alfalfa sprouts can be an important factor contributing to the endemicity for typhoid fever and cholera in Mexico.
引用
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页码:162 / 165
页数:4
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