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Effect of cooking methods on cooking and antioxidant characteristics of rice supplemented with different amounts of germinated brown rice

발아현미 첨가 밥의 취반 및 산화방지 특성에 미치는 취반방법의 영향

  • Lee, Kyung Ha (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Kim, Hyun-Joo (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Lee, Seuk Ki (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Park, Hye Young (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Sim, Eun-Yeong (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Cho, Dong-Hwa (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Oh, Sea Kwan (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Lee, Jeong Heui (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Ahn, Eok Keun (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Woo, Koan Sik (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration)
  • 이경하 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 김현주 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 이석기 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 박혜영 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 심은영 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 조동화 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 오세관 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 이정희 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 안억근 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 우관식 (농촌진흥청 국립식량과학원 중부작물부)
  • Received : 2017.01.23
  • Accepted : 2017.03.29
  • Published : 2017.06.30

Abstract

In this study, the phenolic content and antioxidant activity of rice cooked using different methods with different amounts of germinated brown rice (10, 20, 30, and 50%) were compared. Germinated brown rice was cooked using general and high-pressure cooking methods with and without fermented alcohol. Pasting characteristics decreased, and total polyphenol and flavonoid contents, and DPPH and ABTS radical scavenging activities increased with increasing amounts of germinated brown rice. Moreover, germinated brown rice cooked by general cooking method with fermented alcohol showed higher antioxidant activity than that showed by rice cooked by other cooking methods. The results obtained in this study are expected to serve as basic data for manufacturing of processed products.

본 연구에서는 취반방법이 발아현미밥의 산화방지활성에 미치는 영향을 살펴보기 위해 발아현미 첨가비율별(0, 10, 20, 30, 50 및 100%)로 제조한 발아현미밥의 기능성분 및 라디칼 소거 활성을 살펴보았다. 호화특성은 발아현미 비율이 증가할수록 최고점도, 최저점도, 강하점도, 최종점도, 치반점도가 감소하는 경향을 보였다. 경도는 발아현미의 경우 일반 밥솥으로 취반했을 때 $20.54{\pm}0.79-20.03{\pm}0.77$로 나타났으며, 압력밥솥은 $9.76{\pm}0.26-9.27{\pm}0.43$으로 나타나 유의적으로 감소하였다. 총 폴리페놀 함량은 발아현미 첨가비율이 10, 20, 30, 50 및 100%로 증가할수록 백미를 기준으로 1.18, 1.39, 1.56, 1.90 및 2.91배 증자하였다. 또한 같은 발아현미 비율일 때 10% 발효알코올을 첨가하여 일반밥솥으로 취반하였을 때 높은 함량을 나타내었다. 이와 같은 결과는 총 플라보노이드 함량과 DPPH radical 및 ABTS radical 소거활성에서도 같은 경향을 나타내었다. 본 연구결과, 취반 시 발효알코올의 첨가와 압력밥솥으로 조리하였을 때 경도의 유의적인 감소를 확인할 수 있었으나, 페놀성분과 radical 소거활성의 증가는 발효 알코올의 첨가와 일반 밥솥으로 취반하였을 때 더 높은 값을 나타내었다. 이와 같은 결과는 취반방법에 따른 현미밥의 생리활성 연구에 기초자료가 될 것으로 생각된다.

Keywords

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