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Characteristics of Mung Bean Powders After Various Hydrolysis Protocols  

Kim, Ok-Mi (Faculty of Hotel Culinary Arts, Taekyeung College)
Gu, Young-Ah (Department of Food Science and Technology, Keimyung University and Keimyung Foodex Co., Ltd.)
Jeong, Yong-Jin (Department of Food Science and Technology, Keimyung University and Keimyung Foodex Co., Ltd.)
Publication Information
Food Science and Preservation / v.14, no.3, 2007 , pp. 301-307 More about this Journal
Abstract
To efficiently use Korean mung beans, the functional characteristics of mung bean powder(A), unhydrolyzed mung bean flour(B), and mung bean flour hydrolyzed under optimum conditions(C), were compared. The contents of protein, fat, carbohydrate, ash, and water, did not vary greatly with different treatment methods. The color values of (B) and (C) were similar, while the L value of (A) was higher than those of the other samples. Thereducing sugar content of (C) was highest at 292.63 mg%, while the total phenol contents of (A) and (C) were similar at 38.63 mg% and 38.38 mg%, respectively. The molecular weight of (A) was under 17 kDa by SDS-PAGE, and was lower than the molecular weights of the other samples (B, C), which generally ranged from 17 kDa to 72 kDa. The free sugar content of (C) was highest at 1,125.16 mg%, while (A) and (B) yielded values of 86.36 mg% and 54.20 mg%, respectively. Total free amino acid contents were in the order(C)(B)(A), and were 22,116.35 mg%, 2,731.29 mg%, and 578.54 mg%, respectively. The amino acid content of (C) was 8,231.42 mg% and was higher than those of (A) or(B). The DPPH free radical scavenging abilities of (A) and (C) were high, at 62.1% and 57.63%, respectively, while (B) showed a lower value at 19.26%. Fibrinolytic activity was highest(24.01%) in (C), and was 20.69% in (A) and 18.06% in (B). The above results indicate that mung bean flour hydrolyzed under optimal conditions (C) had the highest functional and quality characteristics, in comparisonh with unhydrolyzed flour (B) and mung bean powder (A). Diverse applications of hydrolyzed mung bean flour are anticipated.
Keywords
mung bean; amino acid; DPPH free radical scavening ability; fibrinolytic activity;
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Times Cited By KSCI : 10  (Citation Analysis)
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