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. 2007 Mar;35(1):36-8.
doi: 10.4489/MYCO.2007.35.1.036. Epub 2007 Mar 31.

Populations of fungi and bacteria associated with samples of stored rice in Korea

Ji Yeon Oh  1 , Sam Nyu Jee, Youngwoo Nam, Hojoung Lee, Mun Il Ryoo, Ki Deok Kim
Affiliations

Populations of fungi and bacteria associated with samples of stored rice in Korea

Ji Yeon Oh et al. Mycobiology. 2007 Mar.

Abstract

Stored rice was collected from rice processing complexes of National Agricultural Cooperative Federation of 11 regions in Korea to evaluate the occurrence of fungi and bacteria and to identify the predominant fungi and bacteria to the genus levels. Most rice samples generally produced the higher levels of fungi and bacteria than white rice. The occurrence of fungi and bacteria varied in various locations of Korea. Among fungi observed, Aspergillus spp. and Penicillium spp. were dominant in the samples and Aspergillus spp. were observed more frequently than Penicillium spp. Predominant bacteria from rice and white rice samples tentatively belonged to the Genus Bacillus, Pectobacterium, Pantoea, and Microbacterium according to BIOLOG and FAME analyses. The results of this study showed that rice in Korea was contaminated in a relatively high level by two dominant storage fungi such as Aspergillus spp. and Penicillium spp. In addition, occurrence of mycotoxins in rice by the fungi could be possible and thus it is necessary to control the storage fungi.

Keywords: Aspergillus; Penicillium; Rice; Storage bacteria; Storage fungi.

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Figures

Fig. 1
Fig. 1
Populations of fungi occurred in the stored rice samples collected from 11 locations of Korea in 2005 and 2006. Different marks in each column indicate the percentage composition of Aspergillus spp., Penicillium spp., and other fungi of the sample. A bar on each columm indicates the standard deviation of the mean from three replications. CFU = colony forming unit; R = rice; W = white rice; NT = not tested; AD = Andong, AS = Anseong, CA = Cheonan, GJ = Gimje, GP = Gimpo, GM = Gumi, HY = Hamyang, JJ = Jinju, NJ = Naju, NW = Namwon, and YD = Yeongdeok.
Fig. 2
Fig. 2
Populations of bacteria occurred in the stored rice samples collected from 11 locations of Korea in 2005 and 2006. A bar on each column indicates the standard deviation of the mean from three replications. CFU = colony forming unit; R = rice; W = white rice, NT = not tested; AD = Andong, AS = Anseong, CA = Cheonan, GJ = Gimje, GP = Gimpo, GM = Gumi, HY = Hamyang, JJ = Jinju, NJ = Naju, NW = Namwon, and YD = Yeongdeok.
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