phospholipid function


Various phospholipid classes with different polar moieties are found in nature. They are consumed with food but, for industrial purposes, only two sources are of importance, i.e. Marine phospholipids can be defined as phospholipids containing docosahexaenoic acid (DHA) or eicosapentaenoic acid (EPA). Phosphatidylcholine (PC) is the most abundant phospholipid in cell membranes.

As natural antioxidants, phospholipids are widely used as emulsifiers to control lipid oxidation. Domestic development and utilization of plant phospholipids are mainly focused on soybean phospholipids and rapeseed phospholipids. Phospholipids are reported as natural antioxidants extracted from both animals and plants. As a result, initiation and propagation steps of lipid oxidation may be accelerated. Lecithin (phosphatidylcholine) is a major component constituting about 35-40% of the total phospholipids and the rest being about 25% phosphatidylethanolamine, about 15% phosphatidyl inositol, 5-10% phosphatidic acid and the rest is a composite of all the minor phospholipids compounds. Therefore, crude oil produced by extraction of crushed soybeans contains about 3 % phospholipids.

However, some factors including the presence of unsaturated fatty acids in phospholipids, and critical micelle concentration should be taken into consideration to avoid oxidative effects. Act as building blocks of the biological cell membranes in virtually all organisms 2.

tocopherol). Marine phospholipids rich in DHA and EPA are beneficial for the treatment of cancer. Announcing our NEW encyclopedia for Kids! The other end, which consists of the fatty acids, is neutral; it is hydrophobic and water-insoluble but is fat-soluble. A phospholipid is composed of two fatty acids, a glycerol unit, a phosphate group, and a polar molecule. Phospholipids are amphiphilic lipids consisting of a glycerol backbone or an amino-alcohol sphingosine backbone, which is esterified to one or two fatty acids, a phosphate group and a hydrophilic residue. Taylor, in Encyclopedia of Dairy Sciences (Second Edition), 2011. Neural tissues, such as brain, are also rich in phospholipids, but they are less readily available for industrial production. Composition of the most important phospholipid classes in egg yolk, soybean and other important sources. The research and production of phospholipids in China was started in the early 1950s, but currently the relevant domestic research is mainly focused on soybean lecithin and there is little on peanut phospholipids. By continuing you agree to the use of cookies. A phospholipid is similar to a triglyceride except that it contains a phosphate group and a nitrogen-containing compound such as choline instead of one of the fatty acids. Hence, they invariably occur in all foods of animal and plant origin. Phospholipids were first studied in Germany as early as 1930. They are necessary for the proper functioning of the nervous system, digestive system, and cardiovascular system. Currently, there is a lot of research on the detection, extraction, preparation, activity, and qualitative analysis of soybean phospholipids, but little research on peanut phospholipids. Omissions? Definition and Functions, Ribosomes - The Protein Builders of a Cell, A.S., Nursing, Chattahoochee Technical College.

In recent years, high performance liquid chromatography-mass spectrometry has been extensively used to quantify phospholipids.

", Fats, Steroids, and Other Examples of Lipids, What Are Amphipathic Molecules? Therefore, China should attach great importance to research on the production process and product development of modified peanut phospholipids. Phosphatidic acid, the parent molecule of phospholipids, is formed by the joining of 3-glycerol-phosphate and a diglyceride; then the base (choline or other) is linked to the phosphate group of phosphatidic acid to form phosphatidyl choline (or other phospholipids).

The hydrophobic tails face away from both the cytosol and extracellular fluid. Phospholipids are used in cell to cell communications as they are involved in signal mechanisms that trigger actions such as blood clotting and apoptosis.

Phospholipids constitute 1-3% of crude soybean oil. Other crude oils are not so rich in phospholipids as they are more diluted with co-extracted neutral lipids.

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