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http://dx.doi.org/10.11002/kjfp.2017.24.6.871

Antioxidant activities of soymilk added with green tea and rosemary extract  

Ryu, Ji-yeon (School of Biomaterials Sciences and Technology, College of Applied Life Sciences, SARI, Jeju National University)
Song, YeonWoo (Subtropical/tropical organism gene bank, Jeju National University)
Moon, Jeong Yong (Subtropical/tropical organism gene bank, Jeju National University)
Jun, Neung-Jae (Jejumorning Co., Ltd.)
Kim Cho, Somi (School of Biomaterials Sciences and Technology, College of Applied Life Sciences, SARI, Jeju National University)
Publication Information
Food Science and Preservation / v.24, no.6, 2017 , pp. 871-878 More about this Journal
Abstract
The objective of this study was to compare antioxidant activities of green tea, rosemary, lemon and bamboo leaves extracts using three different extraction methods (80% ethanol sonication extraction, distilled water autoclave extraction, distilled water extraction at room temperature). As a result, green tea and rosemary extracts showed relatively high antioxidant activities compared with those of lemon and bamboo leaves. These green tea and rosemary extracts were subsequently added to soymilk and their mixtures were examined for antioxidant activities. Soymilk added with 10% green tea distilled water autoclave extracts and distilled water at room temperature extracts showed relatively high DPPH, $85.09{\pm}2.26%$, $84.38{\pm}1.97%$, and ABTS radical scavenging activities, $73.43{\pm}2.78%$, $81.34{\pm}4.78%$, respectively. On the other hand, soymilk added with 10% rosemary distilled water autoclave extracts showed remarkably higher DPPH radical scavenging activity while their ABTS radical scavenging ability was similar to that of non-added soymilk. In conclusion, our results suggest that the addition of green tea distilled water autoclave extracts, distilled water at room temperature extracts and rosemary distilled water autoclave extracts to soymilk could contribute to the development of added value soymilk products with increased antioxidant activities.
Keywords
antioxidant; green tea; jeju island; rosemary; soymilk;
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Times Cited By KSCI : 22  (Citation Analysis)
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