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http://dx.doi.org/10.3746/jkfn.2014.43.2.281

Quality Characteristics of Yakju (Korean Traditional Rice Wine) Added with Bamboo Ethanol Extract  

Jung, Gi-Tai (Jeollabuk-do Agricultural Research and Extension Services)
Ryu, Jeong (Jeollabuk-do Agricultural Research and Extension Services)
Ju, In-Ok (Dept. of Food Science and Technology, Chonbuk National University)
Noh, Jae-Jong (Jeollabuk-do Agricultural Research and Extension Services)
Kim, Jeong-Man (Jeollabuk-do Agricultural Research and Extension Services)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.43, no.2, 2014 , pp. 281-286 More about this Journal
Abstract
This study was carried out to develop Yakju, a new kind of Korean traditional rice wine added with bamboo ethanol extract and characterized by containing various health benefits. The wine with bamboo ethanol extract was fermented by adding ginger and pear to improve flavor and quality. Several quality characteristics and physiological functionalities of Yakju were investigated. When bamboo ethanol extract was added to Yakju, the pH level decreased compared to that of the control. However, total acidity and soluble solid levels were higher than those of the control. The alcohol content of Yakju added with bamboo ethanol extract was slightly higher than that of the control. In examining the colors of Yakju containing bamboo ethanol extract, L value was lower than that of the control, whereas b value and brownness were higher. Various organic acids such as citric acid, malic acid, succinic acid, lactic acid, and acetic acid were determined, and the main organic acid among them was lactic acid. Various free sugars such as sorbitol, glucose, and fructose were detected and glucose was the most abundant. Total polyphenol content of Yakju added with bamboo ethanol extract was lower than that of the control. Further, electron-donating ability ranged from 23.8~40.0%, which was higher than that of the control. Nitrite scavenging ability of Yakju added with bamboo ethanol extract ranged from 15.2~36.4%, which was higher than that of the control at pH 6.0. Sensory evaluation of Yakju showed that bamboo ethanol extract+ginger as well as bamboo ethanol extract+ginger+pear treatment significantly increased flavor, taste, and overall acceptance compared to the others.
Keywords
Yakju; Korean traditional rice wine; bamboo ethanol extract; physiological functionalities; quality characteristics;
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Times Cited By KSCI : 13  (Citation Analysis)
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