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http://dx.doi.org/10.11002/kjfp.2017.24.3.440

Antioxidative activity of roasted Pueraria lobata root extracts  

Choi, Goo-Hee (Hurum Central research institute Co., Ltd.)
Kim, Hyun Jung (Hurum Central research institute Co., Ltd.)
Park, In-Jae (Hurum Central research institute Co., Ltd.)
Kim, Bong-Gyun (Hurum Central research institute Co., Ltd.)
Kim, Hoi-Yeong (Food Science and Technology, Korea National University of Transportation)
Jeong, Jae-Hyun (Food Science and Technology, Korea National University of Transportation)
Cho, Ju-Hyun (Hurum Central research institute Co., Ltd.)
Publication Information
Food Science and Preservation / v.24, no.3, 2017 , pp. 440-445 More about this Journal
Abstract
We evaluated the antioxidative activity of extracts of P. lobata root depending on roasting conditions. P. lobata roots were roasted at three different temperature at $150^{\circ}C$, $200^{\circ}C$, and $250^{\circ}C$ and three different time at 10 min, 20 min, and 30 min respectively. Roasted P. lobata root was extracted using water at $85^{\circ}C$ for 6 h and filtered using filter paper, followed by then evaporated ($12{\pm}0.3^{\circ}Brix$) and freeze-dried. The concentration of maker compound puerarin was determined using a high performance liquid chromatography system. 2 phenolic compounds, flavonoid contents, and antioxidant activities of the extract powder were evaluated. Puerarin contents, Phenolic compounds, and flavonoid contents of roasted P. lobata root were higher than those of unroasted P. lobata root. The results of DPPH and ABTS showed that roasted P. lobata root possessed higher antioxidant activity than unroasted P. lobata root. This study suggested that roasting process could be applied to P. lobata root in order to achieve its high quality and functionality.
Keywords
Pueraria lobata; roasting; puerarin; antioxidant activities;
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Times Cited By KSCI : 5  (Citation Analysis)
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