[生化] 不飽和脂肪酸
The flavor of nut can be improved by roasting, while the quality of the unsaturated fatty acid in nut would be decreased.
焙烤可以有效增加堅果的風味，但由于堅果中含有的大量不飽和脂肪酸極易受熱氧化，因此要嚴格控制焙烤工藝。
Fish and seafood are rich in unsaturated fatty acid which is associated with better control of our blood cholesterol level.
魚類及海産含豐富不飽和脂肪酸，有助更好地控制血液中膽固醇的水平。
In addition, the result of quality correlation analysis indicates that there is a negative correlation between the unsaturated fatty acid content and the protein content.
品質之間的相關分析表明：不飽和脂肪酸含量與蛋白質含量存在明顯的負相關關系；
Grass-cultivated Ganodema lucidum spores oil extracted by Supercritical CO2 is mainly composed of unsaturated fatty acid and it also has higher triterpenoids .
超臨界CO2萃取菌草靈芝孢子油中三萜類物質的含量較高，不飽和脂肪酸是其脂肪酸的主要組成成分。
The study on nutrient requirements of ***tary protein, unsaturated fatty acid, phospholipid and vitamins for Ayu(Plecoglossus altivelis)was reviewed.
本文就國内外關于香魚對飼料中蛋白質、不飽和脂肪酸、磷脂及維生素等營養需求的研究進行概述。
Their fatty acids mainly are unsaturated fatty acid, the total content of EPA and DHA is 13.8% in the head and 7.77% …
魚頭和魚肝脂質中的脂肪酸組成基本相似，不飽和脂肪酸含量較高，EPA和DHA的總含量分别為13.8%和7.77%。
The composition and changes of the fatty acid in the dried slices of Japanese flying squid, Todarodes pacificus, were stu***d. The unsaturated fatty acid was oxidized extremely fast in summer.
對北太平洋的太平洋褶柔魚為原料制成的鱿魚絲幹制品的脂肪酸進行組成及變化研究，在夏季其不飽和脂肪酸氧化極快。
Rice milk is rich in many physiologically active components such as unsaturated fatty acid VE and trace elements, and is free of cholesterol. Rice milk has function of anti-aging as well.
米乳飲料營養豐富，富含人體必需的不飽和脂肪酸而且不含膽固醇，富含天然維生素E等生理活性物質有多種微量元素，具有抗衰老、保青春的養生功效。
The contents of the unsaturated fatty acid in membrane lipid varied periodically with the change of season.
在年周期中，不飽和脂肪酸含量的變化與龍眼耐寒性的變化呈現平行關系；
In this paper, the technology of extraction of unsaturated fatty acid from silkworm pupa oil by freezing crystallization method is investigated.
研究了從八角茴油中分離高純度茴腦的生産工藝，探讨了冷凍結晶及精餾操作的最佳工藝條件。
Chemistry high activity of free radicals can make the unsaturated fatty acid oxidation, ****** the cell function excessively, or recession mutations and proliferation and necrosis centralis disease.
化學活性高的自由基可使不飽和脂肪酸過度氧化，使細胞功能突變或衰退，引起組織增殖和壞死而産生置人于死地的疾病。
Carry on Korean pine nut unsaturated fatty acid extraction experiment by the press way, whose results indicate the yield was much lower than the one done by supercritical CO2 extraction method.
同時用壓榨法進行紅松種仁不飽和脂肪酸提取的對比實驗，結果顯示在實驗條件下其提取的收率要遠低于超臨界CO_2萃取法。
Compared with the raw material, soy fatty acid mixture obtained by the distillation under vacuum had lower content of unsaturated fatty acid, but higher content of saturated one.
水解液通過真空蒸餾得到大豆混合脂肪酸，混合脂肪酸不飽和脂肪酸含量比原料低、但是飽和脂肪酸含量高。
Salmon is high in unsaturated fatty acid, which can prevent heart disease from reducing blood fat and cholesterol.
三文魚本身含有豐富的不飽和脂肪酸，通過降低血脂和膽固醇，從而防止*********病。
Cells age because cell differentiation stops. Hexapeptide contains long-chain unsaturated fatty acid which can improve the penetrability and affinity of skin, and promote cell differentiation.
細胞的衰老歸因于細胞不再分化，六勝肽含長鍊不飽和脂肪酸，提高皮膚的滲透和皮膚的親和力，促使細胞的分化。
Unsaturated fatty acid, especially linoleic are enriched in sunflower seed oil .
葵花油中富含不飽和脂肪酸，尤其是亞油酸。
The unsaturated fatty acid methyl esters (FAMEs) were separated from the fatty acid methyl esters mixture using urea adduct method.
以混合脂肪酸甲酯為原料，采用尿素包合法（脲包法）分離不飽和脂肪酸甲酯。
The safflower oil derived multi-unsaturated fatty acid monoglyceride was synthesized from net glycerin and virgin safflower oil catalyzed by inorganic bases.
本文以新鮮的紅花油和純甘油為原料，在無機堿催化劑的作用下，合成紅花油衍生多元不飽和脂肪酸單甘酯。
Kiwi fruit seed oil has higher content of unsaturated fatty acid, which, specially, contains more than 63.99% linolenic acid.
猕猴桃籽油中不飽和脂肪酸含量較高，特别是亞麻酸含量高達63.99%。
The corn plumule oil including the human body must richly Vitamin E and the unsaturated fatty acid, the content reaches above 80%.
玉米胚芽油富含人體必須的維生素E和不飽和脂肪酸，含量達80％以上。
Thee content of unsaturated fatty acid was 80.83% and the content of necessary amino acid was 24.38%.
結果表明火龍果種仁的不飽和脂肪酸含量較高，為80.83%； 罟火龍果種仁的必需氨基酸含量為24.38%。
Benefits: Rich in vitamins and unsaturated fatty acid, avocado helps supply nutrients, replenish and lock in moisture. Keeps skin elastic and hydrated.
功能：含牛油果豐富的維生素及不飽和脂肪酸，深層保濕并持久鎖住水分，同時補充肌膚營養，令您的肌膚水嫩而有彈性。
Benefits: Rich in vitamins and unsaturated fatty acid, avocado helps replenish sufficient moisture and nutrients. Leaves skin supple, elastic and looking younger.
功能：含牛油果豐富的維生素及不飽和脂肪酸，為肌膚補充豐富營養并持久保濕，令肌膚柔嫩有彈性，煥發年輕光彩。
Compared with the method of soxhlet, the SEF is better to extract unsaturated fatty acid and the extracting time was shorter.
與采用索氏提取法提取扇貝内髒脂質相比較，結果表明，超臨界萃取法更適合不飽和脂肪酸的提取，而且提取時間短。
But in thousand fruits needs richly including the human body Vitamin E and the unsaturated fatty acid, are helpful in the prevention heart blood vessel of brain illness get sick and anti-senile.
而千果中富含人體所需的維生素E及不飽和脂肪酸，有助于預防心腦血管疾病及抗衰老。
不飽和脂肪酸（unsaturated fatty acid）是指分子鍊中含有一個或多個碳碳雙鍵（C=C）的脂肪酸，其化學通式可表示為： $$ RCOOH $$ 其中R為含雙鍵的烴鍊。根據雙鍵的數量，可分為單不飽和脂肪酸（如油酸，含1個雙鍵）和多不飽和脂肪酸（如亞油酸、DHA，含2個及以上雙鍵）。雙鍵的存在導緻分子呈彎曲結構，使其在常溫下多為液态。
這類脂肪酸對健康有重要作用。例如，Omega-3（α-亞麻酸）和Omega-6（亞油酸）屬于必需脂肪酸，需通過飲食獲取。研究表明，適量攝入可降低低密度脂蛋白膽固醇（LDL-C），減少心血管疾病風險。美國心髒協會建議，每日總脂肪攝入中不飽和脂肪酸占比應超過80%。
主要食物來源包括深海魚類（三文魚、鲭魚）、堅果（核桃、杏仁）、植物油（橄榄油、亞麻籽油）及牛油果。世界衛生組織推薦每周至少食用2次富含Omega-3的魚類，以維持神經系統和視網膜功能。
與飽和脂肪酸相比，不飽和脂肪酸的雙鍵結構使其更易發生氧化反應。因此，食品工業常通過氫化工藝将其轉化為反式脂肪酸以延長保質期，但過量攝入反式脂肪酸可能增加慢性病風險。
參考資料：
不飽和脂肪酸（unsaturated fatty acid）是指分子結構中含有一個或多個雙鍵的脂肪酸，其碳鍊能夠吸收額外的氫原子。這類脂肪酸在化學結構和生理功能上具有以下特點：
化學結構
與飽和脂肪酸不同，不飽和脂肪酸的碳鍊中存在雙鍵（單不飽和含1個雙鍵，多不飽和含2個及以上雙鍵）。雙鍵的存在導緻分子呈彎曲結構，降低凝固點，因此在常溫下多為液态。
分類與常見類型
健康作用
適量攝入可降低血液中的低密度脂蛋白（LDL），減少心血管疾病風險，并參與細胞膜構建及抗炎過程。
檢測方法
實驗室中常用氣相色譜法（GC）測定其含量，通過分離和定量脂肪酸甲酯等衍生物。
對比：與飽和脂肪酸（如動物脂肪中的硬脂酸）相比，不飽和脂肪酸更易氧化，需注意保存條件；而反式脂肪酸（通過氫化加工産生）則對健康有害，需避免攝入。
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