Journal of Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Effect of Medicinal Herbs Extracts on Physicochemical Characteristics of Cooked Rice

복합 약용식물 추출물이 쌀밥의 이화학적 특성에 미치는 영향

  • Cho, Yong-Sik (Fermentation and Food Processing Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Lee, Kyung-Ha (Fermentation and Food Processing Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Ha, Hyun-Jee (Fermentation and Food Processing Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Park, Shin-Young (Fermentation and Food Processing Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Choi, Yoon-Hee (Fermentation and Food Processing Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Eun-Mi (Fermentation and Food Processing Division, National Academy of Agricultural Science, Rural Development Administration)
  • 조용식 (농촌진흥청 국립농업과학원 발효이용과) ;
  • 이경하 (농촌진흥청 국립농업과학원 발효이용과) ;
  • 하현지 (농촌진흥청 국립농업과학원 발효이용과) ;
  • 박신영 (농촌진흥청 국립농업과학원 발효이용과) ;
  • 최윤희 (농촌진흥청 국립농업과학원 발효이용과) ;
  • 김은미 (농촌진흥청 국립농업과학원 발효이용과)
  • Received : 2010.09.29
  • Accepted : 2010.12.02
  • Published : 2010.12.31
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Abstract

This study was conducted to investigate the effect of medical herbs extracts on physicochemical characteristics of cooked rice. Three types (CLP 1, CLP 2, CLP 3) of extracts were prepared using 11 medicinal herbs, respectively. Polished rice was cooked with different concentration of medicinal herbs extracts by electric cooker. The moisture contents in cooked rice were decreased by increased concentration of herbs extracts, while total polyphenol contents were significantly increased. DPPH radical scavenging activities of cooked rice obviously were increased as herb extracts level increased. The consistency and setback value of the rice flour was reduced at all of the extracts, while breakdown and initial pasting temperature was increased. Color of cooked rice was shown different comparing to the control. However, the hardness, adhesiveness, springiness, cohesiveness and gumminess of cooked rice was increased depending on the concentration of extracts. These results showed that medicinal herbs extracts, which can benefit human health, is inducing the changes of physicochemical characteristics of cooked rice.

쌀밥의 품질특성에 미치는 복합약용식물 추출물의 효과를 구명하기 위하여 11가지 약용식물을 이용하여 복합추출물 3종(CLP 1, CLP 2, CLP 3)을 제조하였고 취반 시 첨가하여 쌀밥의 항산화 활성과 호화특성 및 조직감의 변화에 미치는 영향을 조사 하였다. 약용식물 추출물의 첨가농도가 증가할수록 쌀밥의 수분 함량은 감소하는 반면 총 폴리페놀 함량과 DPPH 자유기 소거 활성은 증가하였다. 약용식물 추출물의 첨가한 쌀가루는 대조구보다 호화개시온도와 강하점도는 높아지는 반면 응집점도와 치반점도는 낮아지는 호화특성의 변화를 보였다. 약용식물 추출물의 첨가로 쌀밥의 색도와 물성은 대조구와 차이를 보였는데 첨가량이 많아질수록 명도는 감소하는 반면 적색도와 황색도는 증가하였고 쌀밥의 경도, 부착성, 응집성 및 검성이 모두 증가하는 물성적 변화를 농도의존적으로 나타냈다. 결과적으로 항산화 활성을 가진 복합 약용식물 추출물은 쌀밥의 품질특성의 변화를 유도하는 기능성 소재로서 활용가능성을 나타낸다.

Keywords

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