fatty acids.Oleic acid,linoleic acid, andlinolenic acidare few of the examples of unsaturated fatty acids. As saturated fatty acids are comparatively tightly packed together than unsaturated fatty acids, saturated fatty acids have higher melting points. Hence, unsaturated fatty acids exist in liquid ...
When the reaction is carried out in a basic solution, salts of the fatty acids are produced instead of the fatty acids themselves. The salts of fatty acids are soaps and an individual molecule is characterized by an ionic end (the salt part) and a nonpolar end (the hydrocarbon part). ...
Fatty acids can produce ions that are (a) highly charged at the tail. (b) nonpolar. (c) amphipathic. (d) hydrophobi Which of the following are produced by the hydrolysis of maltose? a. One molecule each of D-galactose and L-glucose b. Two molecule...
Why do fatty acids need to be converted to methyl esters before analysis by gas chromatography? What are triglycerides and why are they important? What would you predict the physical state would be of a triglyceride with three unsaturated fatty acids? Explain your reasoning. Why is NaCl described...
Long chain fatty acids are relatively insoluble in water at physiological pH. They dissolve readily in highly alkaline solutions, forming soaps. LCFA are amphiphilic, being quite polar (hydrophilic) at their carboxyl end and quite nonpolar (hydrophobic) at the methyl end. All LCFA must bind ...
polyunsaturated omega-3 fatty acids (docosahexaenoic acid and eicosapentaenoic acid). fao.org 除了不多的几个物种外,鱼通常含有低水平的饱和脂肪、碳水化合物和胆固醇, 不仅提供高价值的蛋白,还提供广泛的必需微量营养素,包括各类维生素(D、A 和B)、矿物质(包括钙、碘、锌、铁和硒)以及欧米伽-3多不饱 和 ...
Fatty acids are a widely studied group of lipids of sufficient taxonomic diversity to be useful in defining microbial community structure. The extraordinar... RJ Bobbie,DC White - 《Appl Environ Microbiol》 被引量: 419发表: 1980年 Fast-atom-bombardment and tandem mass spectrometry for determining...
Why do most fatty acids have an even number of carbons? Why are alkenes called unsaturated hydrocarbons? A fatty acid chain has a hydroxyl group that is polar, then why is a fatty acid chain non-polar? Why are the molecules of hydrocarbons nonpolar?
The analysis of fatty acids by the method of gas chromatography is most advantageously carried out when these substances are present in the form of methyl esters. The methyl ester is very conveniently prepared and generally has a much lower boiling point than the free acid. It is observed that...
Fatty acid ethyl esters (FAEE) are formed by an enzyme-mediateesterificationof ethanol with fatty acids or fatty acyl-coenzyme A. It has been shown thatFAEEand the FAEEsynthaseare predominantly present in those organs most often damaged by ethanol abuse, notably the pancreas and liver. This ...