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Component Analysis and Antioxidant Activity of Pueraria flos

갈화(葛花)의 함유성분 분석과 항산화 활성

  • 신언환 (울산과학대학 호텔조리과)
  • Published : 2009.09.30

Abstract

The purpose of this study is to determine the possibility of using Pueraria flos as natural health food source. To accomplish this purpose, the contents of general and antioxidative nutrients of Pueraria flos a were measured. The contents of carbohydrate, crude protein, crude lipid and ash were 69.2%, 19.9%, 2.2% and 8.9%, respectively, and calories was 340.4 kcal. Total dietary fiber was 85.1% of total carbohydrates. The percentages of water soluble dietary fiber to insoluble dietary fiber were 12.0% and 46.7%, respectively. The protein contained 18 different kinds of amino acids. The contents of essential and non-essential amino acids were 5.0 g and 6.7 g. The Ca was the largest mineral followed by K, Mg, and P, which means Pueraria flos is alkali material. The contents of saturated fatty acids, monounsaturated fatty acids and polyunsaturated fatty acids were 25.37%, 33.61% and 35.68%, respectively. Therefore, the amount of the total unsaturated fatty acid was higher than that of any other plant. The antioxidant activity of 70% ethanol extract and fractions of the Pueraria flos has been determined by the scavenging of the stable radical DPPH; the result showed that the ethyl acetate fraction was the most active, as the amount required for 50% reduction of DPPH after 30 mins ($RC_{50}$) was 109.9 ${\mu}g$, followed by 70% ethanol extract (217.3 ${\mu}g$), hexane fraction (134.5 ${\mu}g$), chloroform (116.7 ${\mu}g$), butanol faction (129.8 ${\mu}g$) and aqueous fraction (473.5 ${\mu}g$).

본 연구는 갈화를 대상으로 약이성 음식으로의 활용을 위한 가능성을 타진하고자 계획 수행되었다. 따라서 갈화의 영양성분 분석을 통한 식품영양학적 접근, 생리활성 기능을 기대할 수 있는 관련 물질 함량의 분석하였다. 식품영양학적 접근에서의 갈화의 일반성분은 건량기준으로 당질 69.2%, 조단백질 19.9%, 조지방 2.2% 및 조회분 8.9%이었고 갈화 100 g의 함유 열량은 340.4 kcal로 분석되었으며, 총 식이섬유소 함량은 건량기준으로 총 당질 중 85.1%이었고 수용성 및 불용성 식이섬유소 함량은 각각 12.0%, 46.7%로 나타났다. 또한, 총 18종의 아미노산으로 구성되었으며 필수아미노산과 비필수아미노산 함량은 각각 5.0 g, 6.7 g이었고, 무기질 중 칼슘의 함유량이 가장 높았고 그 다음이 칼륨, 마그네슘, 인 순으로 나타나 알칼리성 재료임을 알 수 있었으며, 지방산 함량의 경우 총 포화지방산 25.37%, 단일불포화지방산 33.61% 및 다가불포화지방산 35.68%로 구성되어 있어 다른 식물류에 비해 불포화지방산의 함량이 높은 것으로 나타났다. 갈화 70% 에탄올, 헥산, 클로로포름, 에틸아세테이트, 부탄올과 물 추출물에서 DPPH 라디칼 소거능의 항산화 효과 결과는 $RC_{50}$값이 217.3, 134.5, 116.7, 109.9, 129.8, 473.5 ${\mu}g$으로 나타나, 에틸아세테이트 분획물에서 가장 높은 항산화 효과를 나타내었다.

Keywords

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