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Spices mix induces biofilm mode of growth in escherichia coli
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نویسنده
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mirani z.a. ,khan m.n. ,aziz m. ,zehra l.-e. ,sahir k.h. ,khan s.i.
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منبع
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pakistan journal of scientific and industrial research series b: biological sciences - 2012 - دوره : 55 - شماره : 1 - صفحه:30 -34
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چکیده
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The present study describes the effect of composite spices mix on e. coli. this strain (e. coli) exhibited high level of resistance to spices and was able to grow in the presence of 500 μg/ml of spices mix as supplement in brain heart infusion (bhi) broth. in vitro studies showed that spices mix induces biofilm mode of growth which help bacteria to annul the toxic effects and modify it to grow under stress conditions. electron micrographs indicates heterogeneity in biofilms structure,where majority of the cells showed the production of extra cellular matrix material and other just adhere around the multi-cellular aggregate of biofilms without producing extra cellular matrix material under spices stress environment. it is concluded that sub-lethal concentration of spices could be harmful for human health by inducing biofilms mode of growth of food born pathogens.
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کلیدواژه
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Antimicrobial activity; Biofilm; E. coli; Spices
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آدرس
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food and marine resources research center,pcsir laboratories complex, Pakistan, food and marine resources research center,pcsir laboratories complex, Pakistan, department of microbiology,university of karachi, Pakistan, food and marine resources research center,pcsir laboratories complex, Pakistan, food and marine resources research center,pcsir laboratories complex, Pakistan, food and marine resources research center,pcsir laboratories complex, Pakistan
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Authors
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