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4Z,7Z,10Z,13Z,16Z-Docosapentaenoic methyl ester [DPA

Company: C22:5n-6) FAME]
Catalog#: U-102-M
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Quantification of Fatty Acids in Mammalian Tissues by Gas Chromatography–Hydrogen Flame Ionization Detection
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2020-05-05
[Abstract]  In mammalian organisms, fatty acids (FAs) exist mostly in esterified forms, as building blocks of phospholipids, triglycerides, and cholesteryl esters, while some exist as non-esterified free FAs. The absolute quantification of FA species in total lipids or in a specific lipid class is critical in lipid-metabolism studies. To quantify FAs in biological samples, gas chromatography–hydrogen flame ionization detection (GC-FID)-based methods have been used as highly robust and reliable techniques. Prior to GC-FID analysis, FAs need to be derivatized to volatile FA methyl esters (FAMEs). The derivatization of unsaturated FAs using classical derivatization methods that rely on high reaction temperature requires skill; consequently, the quantification results are often unreliable. The recently ... [摘要]  [摘要] 在哺乳动物生物,脂肪酸(FAS)多云存在处于酯化形式,积木磷脂,甘油三酯和胆固醇酯,而一些存在非酯化游离Fas,绝对定量FA物种在总脂质为了定量分析生物样品中的FA,基于气相色谱-氢火焰离子化检测(GC-FID)的方法已被用作高度健壮和可靠的技术。在FID分析中,FA需要衍生为挥发性FA甲酯(FAME)。使用依赖于高反应温度的经典衍生化方法对不饱和FA进行衍生需要技巧;最终,定量结果通常是不可靠的。程序可以快速可靠地衍生出多种FA物种,包括多不饱和FA(PUFA)。要分析哺乳动物组织样品中的FA,脂质提取 作用和分级分离对于稳健分析也至关重要。在本报告中,我们描述了基于GC-FID的哺乳动物组织样品FA定量的完整方案,包括脂质提取,分级分离,衍生化和定量。 FAs,特别是不饱和FAs,需要可靠地定量。

[背景] 一个˚F 阿蒂酸(FA)是羧酸与脂肪链,和FAS被归类根据自己的链长(短,中,长,很长)的数量和分子内双键(饱和,单在哺乳动物生物体中,FAs主要以酯化形式存在,例如磷脂(PLs),甘油三酸酯(TGs)和胆甾醇酯.PLs是生物膜的主要成分,而TGs作为集中的能量储存体很重要,胆固醇酯和胆固醇酯在胆固醇代谢中起作用(Hishikawa 等,2014 ;Nielsen 等,2014 ;Hui和Howles,2005 ;Van Meer ...

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