Extraction,methods,and,applica health Extraction methods and applications of capsaicin
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Since then, there are some homologsof capsaicin in the pepper fruit had been found, they are collectively referredto as capsaicin series substances, now has been found more than 14 kinds of capsaicinseries substances. Wherein the capsaicin and dihydrocapsaicin are accounted forabout 90% of the total amount, the remaining accounted for only a small amount.Capsaicinis an extremely spicy vanilla amide alkaloid. Its chemical structure name: -8 -methyl - (trans) -6 - nonenamide. Pure product is white flaky crystal, meltingpoint is 65-66°C. Easy tobe dissolved in methanol, ethanol, acetone, chloroform and ether, also can bedissolved in an aqueous alkaline solution, at high temperature will produceirritating gases. It can be hydrolyzed to the vanilla ylamine and capric acid,it shows subacidity because of having a phenolic hydroxyl group, and can have acolorimetric reaction with Fehling reagent.Capsaicin manufacturer usuallyuse the method of extracting from natural pepper to prepare capsaicin. Earlymethods is pulverized the dry red pepper, extracted with an organic solvent,concentrated to give an oily liquid, this oil in the international are collectivelyreferred to as capsicum oleoresin, the main ingredient is capsaicin, dihydrocapsaicin, drop-dihydro capsaicin, high-dihydro capsaicin, capsanthin, carotene,yellow pigment, as well as citric acid, tartaric acid, malic acid and other avariety of substances. Pepper oil resin through the solvent of diethyl ether,dilute ethanol, and alkaline solution, or petroleum ether, dichloroethane andother solvents to further extracted and concentrated, crystallized can be obtainedcrude crystals of capsaicin, capsaicin and dihydrocapsaicin content is about76% to 96%. In recent years, in the preparation of capsaicin appears a lot ofnew techniques and new methods, such as ion-exchange method, supercriticalfluid extraction, liquid - liquid extraction, ethanol extraction, prepared by biologicalcell culture system, chemical synthesis capsaicin structure analogs.In theinternational market, the supply of capsaicin exist a certain gap, especially thehigh purity capsaicin apply in medicine, this part of products processingtechnology is difficult, but the corresponding products sales prices are high,with the capsaicin in the pharmaceutical, agriculture and other fields furtherpromote using in future, the market prospects is more optimistic.Capsaicinis widely used, currently used as an additive in the food industry were generallybelong to the low-purity capsaicin products, too much impurities, heavy odor,low price, economic efficiency is no high; the high purity capsaicin has anumber of physiological activity, can ease pain, diminish inflammation, circulateblood, is now widely used in the treatment of rheumatoid arthritis, bruises,frostbite, drug, analgesic, anti-itch, inflammation sterilization, and as pharmaceutical rawmaterialsfora variety of drugs, such as chili rheumatism ointment, drug injection, capsaicinointment and pepper analgesic ointment; in agriculture used as pesticideformulations to get rid of pests and pest control; in military, capsaicin is usedas the main component of manufacturing tear gas, tear gas guns and defensiveweapons; in other areas also have been reported the application of capsaicin,the United States in 1995 used the capsaicin series compounds in paints, coatingthe ship to prevent algae and marine organisms sticking, also can be used inwood, metal, plastic and other surface coating.Source:http://www.cospcn.com
Extraction,methods,and,applica