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http://dx.doi.org/10.11002/kjfp.2014.21.4.506

Enzyme treatment for clarification of spoiled oriental melon juice  

Jang, Se-Jin (Department of Food Science and Technology, Keimyung University and KMF Co., Ltd.)
Jo, Yong-Jun (Department of Food Science and Technology, Kyungpook National University and KMF Co., Ltd.)
Seo, Ji-Hyung (Division of Food, Beverage and Culinary Arts, Yeungnam University College)
Kim, Ok-Mi (Faculty of Hotel Culinary Arts, Taekyeung College)
Jeong, Yong-Jin (Department of Food Science and Technology, Keimyung University and KMF Co., Ltd.)
Publication Information
Food Science and Preservation / v.21, no.4, 2014 , pp. 506-511 More about this Journal
Abstract
In Gyeongsangbuk-do seongju area, hundreds of tons of spoiled oriental melon are harvested annually. Therefore, ways to prevent such spoilage are needed. This study was conducted to investigate the quality characteristics of spoiled oriental melon juice after enzyme treatment for the production of oriental melon concentrate. The treatment of the oriental melon juice with three kinds of enzymes with variable concentrations showed the following results. PECE(1), which was compounded pectinase and cellulase at 0.01% (v/v), gave the melon a 0.16 brown color and 0.01 turbidity, and the highest L value of 97.00. The detected free sugar contents were fructose, glucose and sucrose, with the amount of sucrose the highest at roughly 4,000 mg%. The mixture of different enzyme treatments resulted in a 0.15 brown color and 0.01 turbidity at 60 minutes, and the L value was high at 97.25. The enzyme treatment temperatures of $50^{\circ}C$ and $60^{\circ}C$ yielded a low-level brown color and low turbidity, but the L values were high at $60^{\circ}C$ and $70^{\circ}C$. These results showed that 0.01% (v/v) mixing enzyme, i.e., pectinase and cellulose compounded at $60^{\circ}C$ for 60 min, must be used for the production of oriental melon concentrate.
Keywords
oriental melon; juice; enzyme; pectinase; cellulase;
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Times Cited By KSCI : 17  (Citation Analysis)
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