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Physicochemical Composition and Antioxidant Activities of Korean Dioscorea Species

국내산 마 품종별 이화학적 성분 및 항산화 활성

  • Kim, Kyung-Mi (Dept. of Agro-Food Resources, National Institute of Agricultural Science, Rural Development Administration) ;
  • Kang, Moon-Kyung (Dept. of Agro-Food Resources, National Institute of Agricultural Science, Rural Development Administration) ;
  • Kim, Jin-Sook (Dept. of Agro-Food Resources, National Institute of Agricultural Science, Rural Development Administration) ;
  • Kim, Gi-Chang (Dept. of Agro-Food Resources, National Institute of Agricultural Science, Rural Development Administration) ;
  • Choi, Song-Yi (Dept. of Agro-Food Resources, National Institute of Agricultural Science, Rural Development Administration)
  • 김경미 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 강문경 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 김진숙 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 김기창 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 최송이 (농촌진흥청 국립농업과학원 농식품자원부)
  • Received : 2015.09.04
  • Accepted : 2015.09.26
  • Published : 2015.10.30

Abstract

The objective of this study was to determine the proximate composition and antioxidant activities of Dioscorea spp. Samples were divided into Dunggeunma (D. bulbifra L), Danma (D. polystachya Turcz), Jangma (D. batatas Decaisne) and Danpungma (D. quinqueloba Thunb). The samples were extracted with 70% ethanol and analyzed for total flavonoid contents, polyphenol contents, DPPH radical scavenging activity, and ABTS radical scavenging activity. The moisture contents ranged from 11.96% to 15.01%. The crude protein contents were in the range of 7.86% to 11.55% (Dunggeunma 11.55%, Danpungma 10.48%, Danma 9.43%, Jangma 7.86%). The crude fat contents were between 0.37% and 0.43% (Danpungma 0.43%, Jangma 0.37%, Dunggeunma 0.37%, Danma 0.37%). In the antioxidant activities assay, total polyphenol content of Danma was significantly higher than those of other species at 115.47 mg/100 g gallic acid equivalent (GAE) (p<0.05), whereas it was significantly lowest in Jangma at 66.31 mg/100 g gallic acid equivalent (GAE) (p<0.05). ABTS and DPPH radical scavenging activities of Danma were significantly highest at 104.43 and 56.72 mg trolox eq/100 g (p<0.05). Therefore, antioxidant activities of Dioscorea spp. provide a possible scientific basis for assessing the performance of functional material of Dioscorea spp.

본 연구는 당뇨병, 콜레스테롤 저하작용, 면역조절효과, 관절염 치료 등의 효과가 있다고 알려진 마를 식품소재로써 활용하고자 국내 재배되고 있는 마 품종별 성분을 분석하고, 이용성을 조사하였다. 마 품종별 이화학적 특성 비교 결과, 유리당 함량(mg/g)은 단풍마(28.13) > 장마(24.98) > 산마(20.50) > 둥근마(20.40) 순으로 단풍마가 가장 높았으며, 유기산 함량(mg/g) 또한 단풍마(179.29) > 장마(112.51) > 산마(88.72) > 둥근마(19.23) 순으로 단풍마가 가장 높았다. 조사포닌의 함량(mg/g)은 단풍마(630.3) > 둥근마(66.3) > 장마(42.8) > 산마(38.9) 순으로 단풍마가 가장 높았다. 마의 항산화 활성 결과, 단풍마가 폴리페놀 함량과 DPPH radical 소거능이 높았다. 마의 품종별 성분 특성의 차이를 확인함으로써 마를 활용한 식품 소재화 및 제품 개발을 위한 기초 데이터 자료로 활용될 수 있을 것이라 사료된다.

Keywords

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