In a normal distribution, 68.2% of all scores cluster around the mean within approximately 1 standard deviation, 95.4% within approximately 2 standard deviations, and 99.7% within approximately 3 standard deviations.
Phospholipid-derived fatty acids (PLFA) are widely used in microbial ecology as chemotaxonomic markers of bacteria and other organisms.Phospholipids are the primary lipids composing cellular membranes. Phospholipids can be saponified, which releases the fatty acids contained in their diglyceride tail.ach phospholipid consists of a polar hydrophilic head (red) and two hydrophobic fatty acid tails. The fatty acid structure affects the bilayer structure. Fatty acids with an unsaturated tail (blue) disrupt the packing of those with only saturated tails (black).
1 Another term you will often see in reference to fatty acids is triglyceride. 2  Three fatty acids joined together make a triglyceride, so there are short-chain triglycerides (SCT), medium-chain triglycerides (MCT), or long-chain triglycerides (LCT). 3  Coconut oil is unique because it is composed predominately of MCT. You have saturated fatty acids, monounsaturated fatty acids, and polyunsaturated fatty acids. 2  The second method of classification is based on molecular size or length of the carbon chain in the fatty acid. 3  There are short-chain fatty acids (SCFA), medium-chain fatty acids(MCFA), and long-chain fatty acids (LCFA).