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Effects of the addition of green tea powder on the quality and antioxidant properties of vacuum-puffed and deep-fried Yukwa (rice snacks)

文献类型: 外文期刊

作者: Shen, Xiao Jun 1 ; Han, Jae Yoon 1 ; Ryu, Gi Hyung 1 ;

作者机构: 1.Kongju Natl Univ, Dept Food Sci & Technol, Chungnam 340802, South Korea

2.Chinese Acad Trop Agr Sci, Coconut Res Inst, Wenchang 571339, Peoples R China

关键词: Vacuum-puffing;Deep-frying;Green tea powder additive;Yukwa snack;Antioxidant activity

期刊名称:LWT-FOOD SCIENCE AND TECHNOLOGY ( 影响因子:4.952; 五年影响因子:5.383 )

ISSN: 0023-6438

年卷期: 2014 年 55 卷 1 期

页码:

收录情况: SCI

摘要: Vacuum-puffing has been found to be a very useful process for production of non-deep-fried Yukwa as it ideally produced highly porous and soft texture. In this study, we compared the effects of different green tea powder (GTP) concentrations of 0, 2, 5 and 10 g/100 g on the qualities of vacuum-puffed Yukwa and deep-fried Yukwa. The fat contents of deep-fried Yukwa were significantly higher than vacuum-puffed Yukwa at the same GTP concentrations. Yukwa bases of 10 g/100 g GTP level contained higher total catechins and caffeine contents for vacuum-puffed Yukwa than deep-fried Yukwa. Vacuum-puffed Yukwa had more total phenolics and flavonoids, and a better scavenging effect on DPPH and reducing power than deep-fried Yukwa at the same green tea concentrations. Vacuum-puffing produced more breakable expanded pellets than deep-frying. The sensory evaluation of Yukwa base showed deep-fried Yukwa added with 2 g/100 g GTP was preferred for all the examined properties. (C) 2013 Elsevier Ltd. All rights reserved.

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