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Quality Characteristics of Yanggeng Sweetened with Trehalose and Textural Changes During Storage  

Jung, HyoSun (Dept. of Culinary and Foodservice Management, Kyung Hee University)
Lee, JongSuck (Dept. of Culinary and Foodservice Management, The Graduate School of Tourism, Kyung Hee University)
Yoon, HyeHyun (Dept. of Culinary and Foodservice Management, Kyung Hee University)
Publication Information
Culinary science and hospitality research / v.20, no.3, 2014 , pp. 113-124 More about this Journal
Abstract
This study investigated the quality characteristics of Yanggeng sweetened with various amounts of trehalose (0, 40, 60, 80, 100 % of trehalose) and their changes during storage times. The moisture content, color value, $^{\circ}Brix$, pH, texture profile, QDA and acceptance for samples were tested. As a result of the mechanical tests, moisture content and pH were increased while hardness were decreased with increased trehalose content. Also, moistness, gloss and after taste were increased with increased trehalose in the sensory attribute difference test. Acceptance test showed Yanggeng with 60% trehalose and 40% sucrose obtained the highest scores on flavor, taste and overall acceptability. During storage in refrigerator, Yanggeng sweetened with higher % of trehalose showed significantly higher moisture content, and lower syneresis and hardness than the control sweetened with only sucrose. The results of the sensory test showed that 60% trehalose Yanggeng was the highest in flavor, after taste, and overall acceptability.
Keywords
Yanggeng; trehalose; quality characteristics; storage times;
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Times Cited By KSCI : 5  (Citation Analysis)
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