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KMID : 0881720170320050396
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Journal of Food Hygiene and Safety
2017 Volume.32 No. 5 p.396 ~ p.403
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Investigation of Microbiological and Physiochemical Quality for Irrigation Water used in Napa Cabbage Cultivation
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Yun Bo-Hyun
Kim Min-Kyung
Ryu Jin-Hee
Kim Won-Il
Park Byeong-Yong
Kim Hyun-Joo
Lee Seung-Don
Kim Se-Ri
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Abstract
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The purpose of this study was to investigate water quality for irrigation water used in Napa cabbage cultivation. The water samples were analyzed for physiochemical and microbiological quality for a total of 111 samples including surface water (n = 75) and groundwater (n = 36) collected from five different regions where Napa cabbage is massively grown. As a conclusion, the levels of fecal indicators for surface water were higher than those for groundwater. The numbers of coliform from surface water and groundwater were 1.96-4.96 and 0-3.98 log MPN/ 100 mL, respectively. Enterococci were detected in 95% (72/75) of surface water samples and 22% (8/36) of groundwater samples. Besides, 97% (73/75) of surface water samples were observed being contaminated with Escherichia coli, and 22% (8/36) of groundwater sample was positive for E. coli. In the case of surface water, E. coli and coliform correlate to T-P, and enterococci showed relevance to the suspended solid (SS) and biochemical oxygen demand (BOD). In groundwater, fecal indicator bacteria showed relevance to the SS and chemical oxygen demand (COD). These results could be provided as fundamental date for establishing microbial standard of water used in leafy vegetables cultivation.
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KEYWORD
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Fecal Indicator Bacteria , Physiochemical Analysis , Napa Cabbage , Irrigation Water
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