Removal Effects of Microorganism and Pesticide Residues on Chinese Cabbages by Electrolyzed Water Washing
2012
Sung, J.M., Korea Food Research Institute, Seongnam, Republic of Korea | Park, K.J., Korea Food Research Institute, Seongnam, Republic of Korea | Lim, J.H., Korea Food Research Institute, Seongnam, Republic of Korea | Jeong, J.W., Korea Food Research Institute, Seongnam, Republic of Korea
This study investigated the washing efficiency of electrolyzed water for the removal of microorganisms and pesticide residues from Chinese cabbage. Initial total bacteria and coliform counts were 6.64 and 3.56 log cfu/g respectively. After washing, total bacteria count of tap water (TW) were 5.97 log cfu/g and low alkaline electrolyzed water (LAlEW) and strong acidic electrolyzed water (SAcEW) were 1.63-4.67 log cfu/g. Especially SAcEW-100 was found to the most effective method of washing the cabbages. After washing, the coliform count was dramatically reduced. The removal rate of pesticide residues by NaClO treatment (36.93-50.13%) was greater than that of TW treatment (32.28-38.46%). The removal rate of LAlEW-100 and SAcEW-100 was 63.79 and 78.30% respectively, and was higher than those of TW and NaClO treatments. The vitamin C content of the Chinese cabbages after all treatments did not differ significantly. Consequentially, the electrolyzed water was found to be effective to remove bacteria and pesticide residues from Chinese cabbage without affecting quality.
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