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NTIS 바로가기Journal of applied biological chemistry, v.53 no.2, 2010년, pp.65 - 70
노경희 (농촌진흥청 국립농업과학원 농업생명자원부) , 이기종 (농촌진흥청 국립농업과학원 농업생명자원부) , 박종석 (농촌진흥청 국립농업과학원 농업생명자원부) , 김현욱 (농촌진흥청 국립농업과학원 농업생명자원부) , 이경렬 (농촌진흥청 국립농업과학원 농업생명자원부) , 김종범 (농촌진흥청 국립농업과학원 농업생명자원부)
Medium-chain fatty acids (MCFA) are composed of 8-12 carbon atoms, and are found in coconut, cuphea, and palm kernel oil. MCFA were introduced into clinical nutrition in the 1950s for dietary treatment of malabsorption syndromes because of their rapid absorption and solubility. Recently, MCFA have b...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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중쇄지방산 생산에 관여하는 유전자는? | 이러한 이유로 재배지역이 넓고 재배가 용이한 유채의 종자에서 중쇄지방산을 생산하고 함량을 증대시키기 위해 그 동안 많은 연구가 수행되어 왔다. 지금까지 밝혀진 중쇄지방산 생산에 관여하는 유전자는 크게 Thioesterase(지방산 사슬 길이), KAS(지방산 사슬 연장), 그리고 Acyltransferase(지방산 전이)로 알려져 있다. 이러한 유전자를 단독 또는 동시에 유채에 형질전환 한후, 여기에서 얻어진 형질전환체 계통을 이용하여 고전육종과 분자육종의 병행을 통해 유채 종자에서 중쇄지방산인 Laurate함량이 60 mol%까지 축적되는 결과를 얻었다. | |
중쇄지방산의 주요 공급원인 팜나무와 코코넛 나무의 품종개량에서의 한계는? | 그러나, 중쇄지방산의 주요 공급원인 팜나무와 코코넛나무의 품종개량에는 많은 한계가 있다. 교잡육종에 많은 시간이 소요되며, 유전자원이 다양하지 않아 유전변이 폭이 적다. 1980년대 담배에서 형질전환이 보고된 이후, 유전적 한계를 벗어나 새로운 유전변이 창출이 가능한 생명공학기술이 작물육종에 도입되어 왔고, 실질적으로 식물분자육종방법은 작물개량에 많은 기여를 해 오고 있다. | |
중쇄지방산의 이화학적 특성은? | 지방산은 각 각의 고유한 화학적 · 물리적 특성을 가지고 있으며, 이 특성에 따라 이용범위가 결정된다. 탄소수가 8-12개이며 이중결합이 없는 중쇄지방산은 상온에서 색이 없고, 투명하며, 특정한 맛도 없고, 향기도 없으며, 점도가 낮아 ‘물과 같은’ 액체로 존재하는 물리적 특성이 있다. 또한 중쇄지방산은 탄소길이가 짧아 장(intestine)에서 흡수가 빠르며 장쇄지방산에 비해 열효율이 높고 체지방으로 거의 축적되지 않는 특성이 있다[Takeuchi 등, 2008]. |
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