Lipids General

Plant lipids generally have an even number of carbon FAs, while animal lipids include odd-numbered carbon chain FAs, and, in some cases, branched chain FAs formed by bacterial activity in the digestive tract of ruminant mammals [5,41]. Branched FAs can also be formed in low amounts from other kind of lipids as a result of microbial activity after burial. 

It is worthwhile to emphasize one feature of hydrophilic molecules their ability to form hydrogen bonds with water molecules. Carbohydrates, with their richness of hydroxyl groups, are abundantly able to do this. Lipids generally lack this capability and are, in consequence, quite hydrophobic. 

Examination of Table 1 shows that the prevalent fatty acids in animal depot lipids are either 16 or 18 carbons in length and are either fuUy saturated or contain one or two double bonds. Animal lipids generally contain a higher proportion of samrated fatty acids than do the lipids of temperate zone plants. 

Peptide and Amino Add Absorption Digestion and Absorption of Lipids General... 

The non-ionic detergents Triton X-100 and NP40 are frequently used in studies of the cytoskeleton. They are applied either prior to fixation with a cross-linker in the presence or absence of precipitant fixatives or after fixation to remove remaining lipids. Generally, 0.3% of detergent in PIPES buffer containing 0.1 mM EGTA is used for 1 to 3 min. 

Describe the functions of lipids and their solubility properties. Are animal lipids or plant lipids generally more saturated ... 

Alkyl-cleavage enzyme activities are highest in liver and intestinal tissue, whereas most other cells and tissues possess very low activities. Tumors and other tissues that contain significant quantities of alkyl lipids generally have very low alkyl-cleavage enzyme activities, so the level of ether-linked glycerolipids is inversely proportional to the activity of the alkyl-cleavage enzyme. 

Membrane and lipid General lipid and cell Lipid and fatty acid derivatives of Fluorescence labeled lipids and fatty 45... 

Lipids that are solid at ambient temperatures are referred to as fats while those that are liquid are called oils . Two main groups, having significantly different natural functions and structures, can be classified as the neutral lipids (acylglycerides, fatty acids, alcohols, hydrocarbons, waxes) and polar lipids (glycolipids, phospholipids). Neutral lipids generally form part of an energy store, while polar lipids are functional molecules in the structure of membranes. 

The mechanism by which vitamin E improves myoglobin stability is not understood. Vitamin E is lipid-soluble and resides in the membrane portion of skeletal muscle myofibers, while myoglobin is water-soluble and found in the sarcoplasm. The degradation of lipids generally results in... 

Intraluminal dysfunctions, such as occur in pancreatic and/or biliary insufficiency, interfere with absorption of lipids generally and particularly with the fat-soluble vitamins. The intraluminal defects may be a secondary consequence of partial blockage of the biliary system rather than a primary component of the disease (Wright and Wright, 1971). When this occurs in adults, hypovitaminosis is not a likely consequence if the subjects had an adequate status before onset of the condition (Smith and Lindenbaum, 1974) and the condition is treated. In... 

---