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논문 기본 정보

자료유형
학술저널
저자정보
유승진 ((주)창억) 진종언 (동강대학교) 오성훈 (신안산대학교 식품생명과학과) 류민정 (남부대학교) 황권택 (남부대학교)
저널정보
한국키틴키토산학회 Journal of Chitin and Chitosan Journal of Chitin and Chitosan Vol.24 No.3
발행연도
2019.1
수록면
199 - 204 (6page)

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In this study, antioxidant activity was investigated in yogurt fermentation using GABA lactic acid bacteria(LAB). In DPPH radical scavenging ability, the control group was 26.71%, the 0.5% GABA LAB culture added group was 50.56%, and the 1% added group was 65.44%. The 2% addition group was the highest with 73.55%, which was significantly higher in proportion to the amount of LAB extract added. In ABTS radical scavenging activity, the control group was 44.01%, and 0.5% to 58.71% of GABA LAB culture extracts, 74.19% to 1%, and 82.41% to 2%. ABTS radical scavenging activity was also significantly increased (P < 0.05) in proportion to the LAB culture extract addition concentration. In the reducing power by FRAP, the control group was 0.43, 0.5% at 0.52, 1% at 0.85, and 2% added group was 1.13, which was the highest in the 2% group. The FRAP value of the control group and the 0.5% group was not significant, and the FRAP value increased significantly as the amount of GABA LAB culture extract increased (P <0 .05). The total polyphenol content was the lowest at 327.54 µg/mL in the control group, and the highest polyphenol content was 368.06 µg/mL in 0.5% to 345.86 µg/mL, 1% to 359.03 µg/mL, and 2%. The flavonoid content was 381.16 CE µg/mL, 416.02 CE µg/mL, 440.04 CE µg/mL and 469.38 CE µg/mL in the control group and 0.5, 1, 2% added GABA LAB culture extracts, respectively. The concentration of GABA LAB culture extract increased significantly (P <0.05). As a result, GABA extract has been identified as a high antioxidant activity in lactic acid bacteria fermented yogurt has the potential to be used as a variety of functional products.

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