동부나물의 부위별 생육, 폴리페놀 및 항산화성 차이

• 영문명: Difference in Growth, Phenolics Content and Antioxidant Activity of Cowpea Sprouts at Different Plant Parts
• 발행기관: 한국작물학회
• 저자명: 천상욱(Sang-Uk Chon)
• 간행물 정보: 『한국작물학회지』제58권 제3호, 232~238쪽, 전체 7쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2013.09.30

영문 초록

An experiment was conducted to determine the content of phenolics and flavonoids, antioxidant activity and antioxidant enzyme status for the extracts from 5 and 7-day old sprouts (DOS) of cowpea (Vigna unguiculata L. Walp). Total phenolics [mg ferulic acid equivalents (FAE) kg-1 DW] content was highest in cotyledon extracts (48.8 mg kg-1), followed by roots (30.8 mg kg-1) and hypocotyl (22.2 mg kg-1) extracts (p < 0.05) from 5 DOS. The result of total flavonoid level [mg rutin equivalents kg-1 DW] had same tendency to the results of total phenolics, showing lower amount ranges. The antioxidant activity of the methanol extracts from all the plant dose-dependently increased. DPPH (1,1-diphenyl-2-picryl hydrazyl radical) free radical scavenging activity was higher in cotyledon extracts (82.5%) than in root (52.6%) or hypocotyl parts (35.0%) from 5 DOS. Among antioxidant enzymes, APX and CAT activities were highest in cotyledon part and POX and SOD activities in root part of 5 and 7 DOS. The results showed that total phenolics content (r2 = 0.1516 ~ 0.9911) were more highly correlated with antioxidant activity than total flavonoids level (r2 = 0.0113 ~ 0.9442), and that the level and activity of physiological-active substances were different depending on plant part of the sprout.

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키워드

cowpea plant part total phenolics content total flavonoids level DPPH radical scavenging activity antioxidant enzyme activity