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KMID : 1024620050250040500
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Food Science of Animal Resources
2005 Volume.25 No. 4 p.500 ~ p.506
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Effect of Green Tea Powder on the Growth Inhibition of Oral Bacteria in Yoghurt
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Jung Da-Wa
Park Shin-In
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Abstract
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This study was carried out to obtain knowledges on the survival of Streptococcus mutans in the yoghurt added with green tea powder. The growth inhibition of green tea powder on the food borne pathogens and oral bacteria was measured by total microbial count, Among the tested food borne pathogens, the growth of Staphylococcus aureus and Salmonella enteritidis were not significantly affected by the addition of green tea powder, but green tea powder showed the growth inhibition effect on Escherichia coli O157:H7. The number of surviving Streptococcus mutans cell was decreased by cycle after 24 hem incubation by the addition of green tea powder in the medium. And also the viable cell count of surviving Streptococcus mutans cells (initial inoculum ) were decreased to after 48 hours incubation when green tea powder were added to the drinkable yoghurt, Growth of Streptococcus mutans was strongly inhibited by the addition and incubation of green tea powder for 48 hum in the yoghurt
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KEYWORD
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green tea powder, drinkable yoghurt, growth inhibition, Streptococcus mutans
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