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Ricinoleate
Ricinoleic acid, formally called 12-hydroxy-9-''cis''-octadecenoic acid, is a fatty acid. It is an Unsaturated fatty acid, unsaturated omega-9 fatty acid and a hydroxy acid. It is a major component of the seed oil obtained from the seeds of castor plant (''Ricinus communis'' L., Euphorbiaceae), the plant that produces ricin. It is also found in the sclerotium of ergot (''Claviceps purpurea'' Tul., Clavicipitaceae). About 90% of the fatty acid content in castor oil is the ricinolein. Production Ricinoleic acid is manufactured for industries by saponification or fractional distillation of hydrolysis, hydrolyzed castor oil. The first attempts to prepare ricinoleic acid were made by Friedrich Krafft in 1888. Use Sebacic acid ((CH2)8(CO2H)2), which is used in preparing certain nylons, is produced by cleavage of ricinoleic acid. The coproduct is 2-Octanol, 2-octanol. The mechanism of the base-induced cleavage is proposed to proceed by initial dehydrogenation of the secondary alco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyglycerol Polyricinoleate
Polyglycerol polyricinoleate (PGPR), E476, is an emulsifier made from glycerol and fatty acids (usually from castor bean, but also from soybean oil). In chocolate, compound chocolate and similar coatings, PGPR is mainly used with another substance like lecithin to reduce viscosity. It is used at low levels (below 0.5%), and works by decreasing the friction between the solid particles (e.g. cacao, sugar, milk) in molten chocolate, reducing the yield stress so that it flows more easily, approaching the behaviour of a Newtonian fluid. It can also be used as an emulsifier in spreads and in salad dressings, or to improve the texture of baked goods. It is made up of a short chain of glycerol molecules connected by ether bonds, with ricinoleic acid side chains connected by ester bonds. PGPR is a yellowish, viscous liquid, and is strongly lipophilic: it is soluble in fats and oils and insoluble in water and ethanol. Manufacture Glycerol is heated to above 200 °C in a reactor i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |