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KMID : 0881720110260030198
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Journal of Food Hygiene and Safety
2011 Volume.26 No. 3 p.198 ~ p.202
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Quantitative Analysis of Microbiological Profiles of Retailed White Rice
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Kim Min-Ju
Park Sung-Soo
Kim Byung-Hoon
Park Sung-Hee
Kim Dong-Ho
Kim Keun-Sung
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Abstract
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Rice has been the most important staple food in everyday meals of Korean people for thousands of years. Nowadays, it is getting increasingly used as flour ingredients in a variety of processed foods, so that it is consumed in more diversified ways. As a consequence, production volume of rice flour to manufacture rice cakes, noodles, breads, or confectioneries is recently getting increased in Korea. But there are not sufficient research outcomes to guarantee Korean consumers microbiological qualities of rice flour as well as rice. As a preliminary experiment, therefore, the microbiological profiles (aerobic mesophilic bacteria (AMB), spore-forming aerobic bacteria (SAB), lactic acid bacteria (LAB), yeasts and molds (YM), and Escherichia coli and coliforms) have been monitored for nine retailed white rice samples in this study. AMB counts ranged 102 - 106CFU/g for all the nine white rice samples. All the nine rice samples have SAB counts within a narrow range (1.0 × 102 - 2.5 × 103CFU/g). LAB was detected in two white rice samples (4.0 × 102 and 3.7 × 103 CFU/g). YM was detected in one white rice sample (2.0 × 102 CFU/g) only. E. coli was not detected from all the nine samples. Coliforms were detected in one white rice sample (4.1 × 10 CFU/g) only. All the rice samples were conclusively considered to have various microorganisms, though most of them are harmless and some, such as coliforms, may be harmful.
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KEYWORD
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white rice, microbiological profiles
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