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        검색결과 4

        1.
        2023.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        곽향은 서양에서 Korea mint라고 불릴 정도로 허브와 쓰임새가 매우 유사하다. 서양의 허브는 화장품의 소재로 많이 사용하지만 곽향은 우리나라에서 약재로 더 많이 사용되어 화장품 소재로서의 기능 성을 비교해보았다. 곽향 추출물과 추출물을 이용한 유산균과 효모 발효물, 에센셜오일, 플로럴워터에 대한 항산화, 미백, 폴리페놀, 플라보노이드, 항균력 실험을 진행하였다. 항산화 활성은 모든 샘플에서 높은 효과 가 보였고, 미백과 폴리페놀, 항균력에서 에센셜오일이 가장 높은 효과가 보였다. 반면에 플라보노이드는 70% 에탄올 추출물에서 가장 높은 효과가 보였다. 이런 결과로 에센셜오일이 기능적으로 가장 큰 효과가 있었다. 하지만 추출물을 가지고 효모 발효를 진행한 시료들이 에센셜오일 만큼의 효과가 있다는 것을 확 인해 에센셜오일의 적은 추출량에 비해 효모 발효를 진행한 시료가 화장품소재로서 충분한 가치가 있다고 본다.
        4,000원
        3.
        2012.07 서비스 종료(열람 제한)
        Soybean (Glycine max, 2n = 2x = 40) is broadly distributed throughout East and South East Asia, and important crop as a source of protein, oil, food and animal feed. In order to better understand the morphological differentiation of soybean germplasm collected from China, Japan, Korea, Philippines, America, we analyzed the morphological variabilities among 629 soybeans with 11 morphological traits, such as growth type, leaflet, flower color, trichome, seed coat color, color inside seed etc. and measured the fatty acid composition. The result of the principal coordinates analysis (PCoA) based on the 11 morphological traits revealed diversity among all accessions. The PCoA separated the accessions into two main groups, each group with distinctive features. Among tested germplasm, the contents of five fatty acids were as follows: linolenic acid (2.8%-16.23%), linoleic acid (27.4%-56.6%), oleic acid (9.2%-35.0%), stearic acid (2.9%-8.8%), and palmitic acid (8.7%-17.1%). The fatty acid composition has not shown significant variation among all accessions. IT 22268 was the highest linolenic acid composition (16.2%), while IT 154687 was the lowest (2.8%). Forty three of 629 accessions showed the arachidic acid (0.5%-3.6%), which is the saturated fatty acid with a 20 carbon chain and is as a minor constituent of peanut oil (1.1%-1.7%). This result of this characterization served as reliable resources for detailed description and new functional plant breeding of soybean varieties.
        4.
        2012.07 서비스 종료(열람 제한)
        During the last decade, considerable progress has been made to understand the molecular mechanisms of M. grisea infection in rice plants and 10 rice blast R genes have been identified and characterized via map-based cloning methods. In case of rice germplasm, the genetic backgrounds of each germplasm accessions are not uniform and the evaluation for pathogenicity is difficult. To solve these problems, we applied the single resistance gene markers to rice germplasm accessions. A molecular survey was conducted to identify the presence of major blast resistance (R) gene in 363 accessions of Korea landrace rice germplasm. The results revealed that the resistance gene Pik-p (100%), Pib (98%), Pi-d(t)2 (98%) and Piz (76%) were widely observed in tested rice germplasm, but Pita-2, Pik and Pi39 gene were identified in less than 10 accessions. Most of landrace contain the four or five different resistant genes, but these results was not consist of field nursery screening. 13 accessions were shown the blast resistance in field nursery screening and Pik-p, Pib, Pi-d(t)2 and Piz genes were observed in these accessions. The evaluation results of blast resistance genes in rice germplasm will help in breeding of multi disease resistant varieties.