발효홍삼 농축액을 이용한 노인용 기능성 간식(양갱)의 항산화성 및 품질특성

Abstract

Abstract In this study red ginseng was extracted with ethanol and then fermented by yeasts including Lactobacillus casei and Bifidobacterium longum. Fermented red ginseng extracts(FRGE) were found to be more effective antioxidants in vitro with regards to 1,1-diphenyl-2-picrylhydrazyl(DPPH) radical scavenging activity than red ginseng extracts(RGE). In FRGE, the contents of ginsenosides Rb 1 , -Rb 2 and -Rc were much lower than in RGE, however, the contents of ginsenosides 20(S)-Rg 3 , 20(R)-Rg 3 and compound K were higher than RGE. FRGE was added to Yanggaeng(0, 5, 10, 15, 20%), and physicochemical and sensory evaluations of the Yanggaeng were conducted. The L and b values of Yanggaeng with added FRGE were decreased by increasing the ratio of FRGE, while the a value was increased. Sensory evaluations for, taste, color, flavor, texture and overall acceptability of Yanggaeng with addition of FRGE (10%) were applicable for improving the Yanggaeng product. Key words: red ginseng, fermented red ginseng, Yanggaeng, sensory evaluation