Information AboutGlycerine |
| CATEGORIES ABOUT GLYCEROL | |
| polyols | |
| food additives | |
| household chemicals | |
| cosmetic chemicals | |
| alcohol solvents | |
| laxatives | |
Glycerol, also well known as '''glycerin''' and '''glycerine''', and less commonly as '''propane-1,2,3-triol''', '''1,2,3-propanetriol''', '''1,2,3-trihydroxypropane''', '''glyceritol''', and '''glycyl alcohol''' is a colorless, odorless, Hygroscopic , and sweet-tasting Viscous liquid. Glycerol is a Sugar Alcohol and has three Hydrophilic Alcohol ic Hydroxyl Group s (-OH) that are responsible for its solubility in Water . Glycerol is Prochiral . Glycerol is used in glycerol Soap , in Cosmetics and Creams , in Food s, in Chemistry , and in glycerol Fog Machine Mist . Glycerol is produced from dihydroxyacetone phosphate ( DHAP ) by the enzyme glycerol three-phosphate dehydrogenase (Gpd p) in the Mitochondrion of the Eukaryotic cell during Glycolysis . {Link without Title} GLYCEROL AND TRIGLYCERIDES When referring to its function in living organisms, the term glycerol is preferred. Glycerol is an important component of Triglyceride s (i.e. Fat s and Oil s) and of Phospholipid s. Glycerol is a three- Carbon substance that forms the backbone of fatty acids in fats.(1) When the body uses stored fat as a source of energy, glycerol and fatty acids are released into the bloodstream. The glycerol component can be converted to Glucose by the liver and provides energy for cellular metabolism. A of Saponification and Transesterification to obtain Biodiesel , this is produced by Hydrolysis of three Ester linkages and loss of three equivalents of Fatty Acid from fat or biological oil. Fat s and Oil s are insoluble in Water , because the OH groups of glycerol are replaced by Ester groups. They are Hydrophobic . GLYCEROL AND BIODIESEL As a byproduct of Biodiesel production, each of the OH sites in HO-CH2-CH(-OH)-CH2-OH is one of the three places where a Fatty Acid chain is broken off the Triglyceride Molecule . See: Transesterification . PURIFICATION Like , Separation of unreacted Methanol , Dilution with wash liquid stream coming from methylester washing, splitting of soaps and final concentration up to 80%. Partially refined glycerol can be delivered as such to specialized distillers. Feedstock pre-treatment and upgrading of glycerol to Pharmaceutical grade (>99.7%) can be optionally implemented within the biodiesel factory itself. When used in food, care should be taken to use only pure Vegetable glycerol that is specifically labeled for use in food. "External use only" warnings should be heeded. APPLICATIONS Drugs
Personal care
:: Glycerol is a component of glycerol properties. When used as an emollient, glycerol should never be applied undiluted to the skin. The same powerful Hygroscopic property that draws moisture out of the air to moisten the skin will draw moisture out of the skin if the glycerol is too concentrated. A minimum of two or three parts water should be added to one part glycerol. Foods and beverages
Glycerol has approximately 27 food calories per teaspoon and is 60% as sweet as Sucrose . Although it has about the same Food Energy as table sugar, it does not raise blood sugar levels, nor does it feed the bacteria that form plaques and cause dental cavities. Glycerol should not be consumed undiluted, as unhydrated glycerol will draw water from tissues, causing blistering in the mouth and gastric distress. As food additive, glycerol is also known as E Number E422. Polyether polyols
Alkyd resins (plastics) and cellophane
Absolute alcohol
Other applications
:: Use a mixture of one part glycerol to two parts water. Place the mixture in a flat pan, and totally submerge the leaves in a single layer in the liquid. You'll have to weigh them down to keep them submerged. In two to six days, they should have absorbed the liquid and be soft and pliable. Remove them from the pan and wipe off all the liquid with a soft cloth. Done correctly, the leaves will remain soft and pliable indefinitely.
See also: Oleochemical s. EXTERNAL LINKS SOURCES ''Glycerine'' is also the title of a single (albeit mispronounced) from the album '' Sixteen Stone '' by the band Bush . |
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