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Effect of Immersion Liquids on Quality Characteristics of Peeled Taro during Storage  

Park, Kee-Jai (Korea Food Research Institute)
Lee, Ho-Joon (Korea Food Research Institute)
Kim, Jong-Hoon (Korea Food Research Institute)
Kwon, Ki-Hyun (Korea Food Research Institute)
Jeong, Jin-Woong (Korea Food Research Institute)
Publication Information
Korean Journal of Food Science and Technology / v.38, no.6, 2006 , pp. 742-750 More about this Journal
Abstract
This study was carried out to investigate the efficacy of two kinds of electrolyzed water with added 0.5% (v/v) citron juice, SAEW-CJ[Strong Acidic Electrolyzed Water with added Citron Juice, pH 2.57, ORP (oxidation-reduction potential) 1,122 mV, HClO 23.05ppm] and LAEW-CJ (Low Alkaline Electrolyzed Water with added Citron Juice, pH 4.67, ORP 997mV, HClO 42.55mV) as storing liquid for peeled taro. During storage at $5^{\circ}C$ until 30 days, SAEW-CJ and LAEW-CJ inhibited the growth of microorganisms more effectively than 0.2% (w/v) APS (aluminium potassium sulfate) and 0.85% (w/v) NaCl did. Total phenolic contents, PRO (polyphenol oxidase) activity, color differences value (${\Delta}E$) and vitamin C contents of peeled taro stored in SAEW-CJ and LAEW-CJ were lower than those stored in 0.2% APS and 0.85% NaCl. The hardness decrement of peeled taro stored in LAEW-CJ was lower than that of the others. In addition, the contents of moisture, crude protein, crude ash, total sugars, and reducing sugars were gradually decreased during storage. However, no difference by peeling methods or immersion liquid was found.
Keywords
Peeled taro; immersion liquid; quality; electrolyzed water; citron juice;
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