Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Physicochemical properties and β-glucan contents of Korean naked oat (Avena sativa L.) cultivars

국내 육성 쌀귀리 품종의 이화학 특성 및 베타글루칸 함량

  • Lee, Mi-Ja (Crop Foundation Division, National Institute of Crop Science, NICS, RDA) ;
  • Park, Song-Yie (Crop Foundation Division, National Institute of Crop Science, NICS, RDA) ;
  • Kim, Yang-Kil (Crop Foundation Division, National Institute of Crop Science, NICS, RDA) ;
  • Kim, Hyung-Soon (Department of Biomolecular and Chemical Engineering, Seonam University) ;
  • Park, Hyoung-Ho (Crop Foundation Division, National Institute of Crop Science, NICS, RDA) ;
  • Lee, Yoon Jeong (Department of Food Science and Technology, Chungbuk National University) ;
  • Jeong, Heon Sang (Department of Food Science and Technology, Chungbuk National University)
  • 이미자 (농촌진흥청 국립식량과학원) ;
  • 박송이 (농촌진흥청 국립식량과학원) ;
  • 김양길 (농촌진흥청 국립식량과학원) ;
  • 김형순 (서남대학교 생명화학공학과) ;
  • 박형호 (농촌진흥청 국립식량과학원) ;
  • 이윤정 (충북대학교 식품공학과) ;
  • 정헌상 (충북대학교 식품공학과)
  • Received : 2016.08.25
  • Accepted : 2016.10.14
  • Published : 2017.02.28
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Abstract

Due to increased consumption and demand for oat-related foods and processed food, this study examined physicochemical properties, antioxidant activity, and ${\beta}-glucan$ contents of 5 Korean naked oat cultivars. Oat seeds had long-grain appearance in all cultivars except for Seonyang. The contents of main components such as protein, starch, and crude fat were significantly different among cultivars. The total ${\beta}-glucan$ content was 3.78-4.60% and the soluble ${\beta}-glucan$ ratio was 71-83%. Fatty acid composition was C18:1, C18:2, C16:0, C18:0, and C18:3. Unsaturated fatty acid (USFA) content was 75.4-81.2%. 2,2-Diphenyl-1-picrylhydrazil (DPPH) and 2,2'-azino-bis-3-ethyl-benzo-thiaxoline-6-sulfonic acid (ABTS) radical scavenging activity were significantly different for each cultivar. Daeyang had the highest ${\beta}-glucan$, USFA content, and antioxidant activity. Protein content showed a negative correlation with starch content (r = -0.775). Antioxidant activity was positively correlated with total phenol content (r =0.760). Ash content and flour whiteness showed a positive correlation (r =0.732).

본 연구에서는 소비가 증가되고 있는 귀리 관련 식품 및 가공식품 수요에 대처하기 위해 국내 육성 품종의 이화학적 특성 및 기능성분인 베타글루칸과 항산화활성을 분석하였다. 국내에서 현재까지 개발된 쌀귀리는 5개 품종으로 이들 품종에 대한 연구 결과를 요약하면 다음과 같다. 귀리 종실의 외관특성은 선양을 제외한 모든 품종이 장립종이었으며, 귀리 종실 및 가루의 백도 및 L값은 조양이 비교적 높은 값을 보였고, 단백질, 전분, 조지방 등 주요 구성성분은 품종에 따라 유의적인 차이를 보였다. 총베타글루칸 함량은 3.78-4.60% 수준으로 대양이 가장 높았으며, 총베타글루칸 함량에 대한 수용성베타글루칸 함량비율은 71-83%이었다. 쌀귀리의 지방산 조성은 C18:1, C18:2, C16:0, C18:0, C18:3 순이었으며, 불포화지방산 함량은 75.4-81.2%이었으며 대양이 가장 높았다. DPPH 라디칼 소거 활성과 ABTS 라디칼 소거 활성은 품종마다 유의적인 차이를 보였으며, 대양이 가장 높은 항산화활성을 보였다. 전분함량과 단백질 함량은 부의 상관관계(r= -0.775)를 보였으며, DPPH 라디칼 소거활성은 총페놀함량과 정의 상관관계(r=0.760)를 나타내었고,회분함량과 분말백도도 정의 상관관계(r=0.732)를 나타내었다.

Keywords

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