한방생약재로 사용되고 있는 자귀나무 수피를 천연 항산화제 및 기능성 식품이나 제품을 개발하기 위한 연구의 일환으로 자귀나무 수피를 물을 용매로 와 의 고온에서 추출된 물 추출물(AW)과 열수 추출물(AHW) 그리고 70% 에탄올을 용매로 에서 추출된 에탄올 추출물(AE)에 대한 생리활성 물질의 함량과 효과를 측정하였다. 자귀나무 수피의 열수 추출물인 AHW에서 가장 많은 8.57 mg/g의 플라보노이드와 108.67mg/g의 폴리페놀 화합물을 함

Three bark extracts of Albizia julibrissin were prepared using water (AW), 70% (v/v) ethanol (AE), and hot water (AHW). Organic solvent fractions were analyzed for total flavonoids and polyphenols, antioxidant activities, and inhibitory activities against xanthine oxidase. Total flavonoid and polyphenol contents of the AHW extract were 8.57 mg/g and 108.67 mg/g, respectively. The SOD-like activities of all extracts, assayed at 1.0 mg/mL, were 10.46-16.73%. The nitrite-scavenging ability of the AHW extract, assayed at pH 1.2, was 60.82%, and the value was /mL. The electron-donating ability of the AHW extract, at 0.3 mg/mL, was 92.30%; the values of the AW and AHW extracts were /mL and /mL, respectively; thus higher than that of ascorbic acid (/mL). Xanthine oxidase inhibition by the AHW extract, at 1.0 mg/mL, was 94.05%. These results indicate that the AHW of A. julibrissin has potential as a natural antioxidant, for addition to foods and nutraceuticals.

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