Functional Activities of Makgeolli By-products as Cosmetic Materials
2013
Seo, G.U., Kyungnam University, Gyeongnam, Republic of Korea | Choi, S.Y., Kyungnam University, Gyeongnam, Republic of Korea | Kim, T.W., Malgeunnaeil Co., Gyeongnam, Republic of Korea | Ryu, S.G., Malgeunnaeil Co., Gyeongnam, Republic of Korea | Park, J.H., Malgeunnaeil Co., Gyeongnam, Republic of Korea | Lee, S.C., Kyungnam University, Gyeongnam, Republic of Korea
To investigate the potential use of makgeolli by-products as cosmetic materials, their phenolic and kojic acid contents, antioxidant activity, whitening effect, and anti-wrinkle activity were evaluated. Extracts were obtained with five different solvents (containing 0, 25, 50, 75, and 100% ethanol) from nuruk lees (NL), rice lees (RL), raw makgeolli (RM), and commercial makgeolli (CM) at 20 and 50oC. NL and CM extracts prepared with 75% ethanol had the highest phenolic contents (13.26 and 16.66 mg gallic acid equivalents/g, respectively) at 20 and 50oC, respectively. The highest kojic acid content was found in NL extracts with 0% ethanol at 20oC, while kojic acid was not detected in extracts prepared at 50oC. NL and RL extracts at 20oC showed significant antioxidant activity. Whitening effects, determined by tyrosinase inhibitory activity, were highest for the NL extract prepared with 75% ethanol at 50oC. Noticeable anti-wrinkling effects, estimated by elastase inhibition activity, were also found in NL and RL extracts. These results suggest that makgeolli by-products could be valuable cosmetic materials with antioxidant, whitening, and anti-wrinkle activities.
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