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Verification of Mold Determination Method using Slide Culture by Monitoring  

Lee, Hee-Sook (Busan Regional Korea Food & Drug Administration)
Park, Kun-Sang (Busan Regional Korea Food & Drug Administration)
Sin, Yeong-Min (Busan Regional Korea Food & Drug Administration)
Lee, Myung-Ja (Busan Regional Korea Food & Drug Administration)
Lim, Jong-Mi (Busan Regional Korea Food & Drug Administration)
You, Hyun-Jeong (Busan Regional Korea Food & Drug Administration)
Kim, Ki-Hyun (Busan Regional Korea Food & Drug Administration)
Cho, Dae-Hyun (Busan Regional Korea Food & Drug Administration)
Kim, Dai-Byung (Busan Regional Korea Food & Drug Administration)
Kim, Ok-Hee (Busan Regional Korea Food & Drug Administration)
Publication Information
Journal of Food Hygiene and Safety / v.22, no.3, 2007 , pp. 137-144 More about this Journal
Abstract
Koji is steamed rice that has had koji-kin, or koji mold spores, cultivated onto it. The isolation, culture, and microscopic examination of molds in the koji require the use of the selective media and special microscopic slide techniques. If simple wet mount slides of molds were attempted, it became apparent that wet mount slides made from mold colonies usually don't reveal the arrangement of spores that is so necessary in identification. The process of merely transferring hyphae to a slide breaks up the hyphae and sporangiophores in such a way that identification becomes very difficult. The slide culture method is superior to wet mounts in that the hyphae, sporangiophores, and spores remain more or less intact when transferred. The procedure that will be used to produce a mold culture on a slide that can be observed directly on the slide. We investigated the contamination rate of penicillium spp. on the 21 kinds of koji distributed at Korea. The contamination rate of Penicillium spp. were not detected at 21 products by slide culture method. These results will be used to reestablish a mold determination of koji and food in Food Additives Code.
Keywords
slide culture; mold determination; microscopic features; Penicillium spp.; koji;
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