KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Changes in Functional Compounds and Antioxidant Activities in Storage Duration with Accelerated Age-Conditioning of Oats

노화가속화 조건에서 저장 기간에 따른 귀리의 기능성 성분 및 항산화 활성 변화

  • Son, Yu Rim (Department of Central Area Crop Science, National Institute of Crop Science, RDA) ;
  • Lee, Ji Hae (Department of Central Area Crop Science, National Institute of Crop Science, RDA) ;
  • Park, Hyoung-Ho (Headquarters, National Institute of Crop Science, RDA) ;
  • Lee, Byong Won (Department of Central Area Crop Science, National Institute of Crop Science, RDA) ;
  • Kim, Hyun-Joo (Department of Central Area Crop Science, National Institute of Crop Science, RDA) ;
  • Han, Sang-Ik (Department of Central Area Crop Science, National Institute of Crop Science, RDA) ;
  • Woo, Koan Sik (Department of Central Area Crop Science, National Institute of Crop Science, RDA) ;
  • Lee, Byoung-kyu (Department of Central Area Crop Science, National Institute of Crop Science, RDA) ;
  • Lee, Sang-Chul (School of Applied Biosciences, Kyungpook National University) ;
  • Lee, Yu Young (Department of Central Area Crop Science, National Institute of Crop Science, RDA)
  • 손유림 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 이지혜 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 박형호 (농촌진흥청 국립식량과학원 기술지원과) ;
  • 이병원 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 김현주 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 한상익 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 우관식 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 이병규 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 이상철 (경북대학교 농업생명과학대학 응용생명과학부) ;
  • 이유영 (농촌진흥청 국립식량과학원 중부작물부)
  • Received : 2018.02.22
  • Accepted : 2018.05.15
  • Published : 2018.06.30
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Abstract

In this study, we investigated the changes in physicochemical properties, antioxidant activities, and contents of functional compounds, such as avenanthramides (AVNs), vitamin E, and ${\beta}$-glucan, in oats by accelerated age-conditioning (temperature: $45^{\circ}C$, relative humidity: 20%). No significant differences were observed in crude protein, crude fat, and AVNs contents of three oat cultivars, up to 63 days of storage; however, their antioxidant activities, as well as ${\beta}$-glucan, vitamin E, and fatty acid contents were significantly different (p < 0.05). ${\beta}$-glucan and fatty acid contents and the antioxidant activities of Deayang (DY) cultivar did not change during storage. ${\beta}$-glucan and unsaturated fatty acid contents of Choyang (CY) and Jopung (JP) increased during the storage period, while antioxidant activities did not (DPPH-CY; 48.1 to 26.9 mg TEAC/100 g, JP; 49.4 to 26.7 mg TEAC/100 g. ABTS-CY; 88.4 to 56.3 mg TEAC/100 g, JP; 80.0 to 55.8 mg TEAC/100 g). The total vitamin E content in DY (1.20 to 0.85 mg/100 g) and CY (1.73 to 1.33 mg/100 g) decreased, but it was maintained in JP. This study indicated that the changes in physicochemical properties and functional compounds of oat grains during storage depends on the cultivars. The result showed that DY, which has the highest AVNs content, has more stable functional compounds and antioxidant activities during storage. These results can serve as essential data for post-harvest management and development of functional food materials for extending the use of oats.

국내 육성 귀리인 대양, 조양, 조풍을 노화가속화 조건($45^{\circ}C$, RH < 20%)에서 63일간 저장하였을 때, 귀리의 기능성 성분과 항산화 활성 변화는 아래와 같다. 1. 단백질, 지방 함량은 세 품종 모두 저장 기간 동안 큰 변화 없이 유지되었다. 2. 항산화성분 중 아베난쓰라마이드는 저장 기간 동안 함량이 유지되었지만, 비타민 E는 63일의 저장 기간 동안 대양과 조양 품종에서 함량이 감소하는 경향을 보였다. 3. 조양과 조풍은 저장 후 베타글루칸 함량과 불포화지방산 함량이 점점 증가하였지만, 대양은 원곡의 함량을 유지하였다. 4. 항산화 활성 측정 결과, 대양은 저장기간 동안 큰폭의 변화없이 함량을 유지한 반면, 조양과 조풍은 42일 이후 감소하는 양상을 보였다.

Keywords

References

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