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학술저널
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한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제20권 제2호
발행연도
2010.1
수록면
363 - 369 (7page)

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This study was conducted to investigate the effects of different sanitizers and contact times on storage quality and microbial growth in fresh-cut broccoli. Fresh broccoli samples were cut into small pieces, washed each for 90 s and 180 s in normal tap water (TW), 100 μl/l chlorinated water (CL, pH 7), electrolyzed water (EW, pH 7.2) containing 100 μl/l free chlorine, or 2 μl/l ozonated water (O3). Then,samples were packaged in 30-μm polyethylene bags and stored at 5oC for 9 days. No significant differences were observed in gas composition and color parameters (L*,a*, b*, and hue angle) among different sanitizers with contact times. No off-odor was detected during the storage. A longer contact time was not effective in reducing microbial population, except with O3 washing. O3 with 90 s was not much effective in reducing microbial population compared with Cl or EW. However, samples washed with O3 for 180 s observed the lowest numbers of total aerobic and coliform plate counts. The result suggested that, a longer contact time of ozone can be used as a potential sanitizer to maintain the microbial quality and safety of fresh-cut broccoli.

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