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http://dx.doi.org/10.11002/kjfp.2017.24.7.908

Changes in microbial and chemical properties of rough rice treated with cold plasma by storage temperatures and periods  

Woo, Koan Sik (Crop Post-harvest Technology Division, Department of Central Area Crop Science, National Institute of Crop Science, RDA)
Yong, Hae In (Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agriculture and Life Science, Seoul National University)
Jo, Cheorun (Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agriculture and Life Science, Seoul National University)
Lee, Seuk Ki (Crop Post-harvest Technology Division, Department of Central Area Crop Science, National Institute of Crop Science, RDA)
Lee, Byong Won (Crop Post-harvest Technology Division, Department of Central Area Crop Science, National Institute of Crop Science, RDA)
Lee, Byoungkyu (Crop Post-harvest Technology Division, Department of Central Area Crop Science, National Institute of Crop Science, RDA)
Lee, Yu-Young (Crop Post-harvest Technology Division, Department of Central Area Crop Science, National Institute of Crop Science, RDA)
Oh, Sea-Kwan (Crop Post-harvest Technology Division, Department of Central Area Crop Science, National Institute of Crop Science, RDA)
Kim, Hyun-Joo (Crop Post-harvest Technology Division, Department of Central Area Crop Science, National Institute of Crop Science, RDA)
Publication Information
Food Science and Preservation / v.24, no.7, 2017 , pp. 908-914 More about this Journal
Abstract
Cold plasma (CP) was applied to examine microbial safety and physicochemical properties of rough rice. CP was generated in a square-shaped plastic container (250 W, 15 kHz, ambient air) and dielectric barrier discharge plasma treatment was applied for periods of 0, 10, and 20 min during 2 weeks at 4 and $25^{\circ}C$. As a result of observing changes in growth of microorganisms, 3.46-3.86 log CFU/g of total aerobic bacteria and 2.27-2.86 log CFU/g of mold were detected in the early stage of storage. The growth of total aerobic bacteria and mold was increased depending on the storage temperature and period, but there was no big difference between cultivars. Microbial analysis after storage showed that microorganisms of plasma-treated group were less grown approximately 1.50 log CFU/g. Moisture content of rough rice was decreased by storage temperature and periods. As for the amylose content, changes in the content by plasma were not observed in Samkwang, Cheongpum and Misomi, whereas Palbangmi showed a tendency to increase. The results of this study indicated that CP treatment improved the microbial quality of rough rice, but further studies should be conducted to reduce the deterioration of sensory quality induced by CP.
Keywords
rough rice; cold plasma; storage; quality;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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