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Extraction of stevia glycosides


All non-toxic natural sugar source. In recent years, China has become the largest exporter of stevia leaves, stevia glycosides have been widely used in domestic and international food, medicine and industry, as in hot demand, thereby increasing the processing capacity of Stevia to export more products to improve economic efficiency,[link widoczny dla zalogowanych], do a good job in China Extraction of stevia glycosides, not only to solve the employment problem, and so the amount of foreign currency in exchange for benefits the country. ! Process Stevia glycosides are mostly extracted the scope of patents, published literature from the point of view, summed up the production process: solvent extraction, precipitation, ion exchange,[link widoczny dla zalogowanych], adsorption resin, etc. This paper introduces a more advanced production methods - Water extraction fermentation. 2.1 The investigation process exterminate washing pressure to shake the residue - residue + (3) ● Ru through the dried leaves of sweet stone stone stone snapped intake temperature - extract dipped in a - filter - Yang anion exchange resin eleven crucible i straight out of a vacuum cleaning tuck shrink (45-5o'c) a dissolved in methanol (5 ℃, Z4h) had to shake a crystal was washed rear stevia glycosides, the amount of extraction of a bad break,[link widoczny dla zalogowanych], packaging techniques that take 500kg 2.2 Stevia dry leaves into the extraction column,[link widoczny dla zalogowanych], about 60 ℃ with continuous hot water extraction, extraction of transition is about 20 times the weight of dry leaves, dark brown, then add about 200k8 flocculant, adjust the pH value of the filter frame after the addition complex and light transmission by more than 95% of the filter transition, the filtrate into the resin column adsorption, desorption of ethanol by 2000 liters of water, desorption transition is the glycoside alcohol solution. The solution through ion exchange resin desalting after bleaching of 28 to enter the vacuum concentration tank (temperature is 50 ℃) recovery of ethanol, requiring concentrate solids content of about 50, then through the sub-disk into the vacuum oven drying, and finally get that Stevia glycosides of dry matter, after, after grinding, packaging, sealing finished product storage. 3 Product Quality Standard 3.1 Appearance White, light yellow powder or crystal. 3.2 Physical and Chemical Indicators: meet GB8270 \4 Stevia Stevia glycosides glycosides application is the use of the first origin of the cries of people will look askance West Su / n. Add it to increase the sweetness in the tea, with industrial production and safety of stevia glycosides toxicological aspects in detail. Make use of the increasingly widely heard. 4.1 4.1 Food industry applications. I drink: soda, fruit juice, wine, ice cream and other sweeteners in part. 4.1.2 DS: Stevia bread, biscuits and so on. 4.1.3 Meat Products: stevia glycosides used in sausages, ham and other meat products can improve the salinization effect. 4.2 Application of the pharmaceutical industry as a flavoring agent in the syrup, break up Jing, Jing, such as in film applications. Such as cough syrup, orange flavor Vc. 4.3 Other applications toothpaste do Stevia,[link widoczny dla zalogowanych], Stevia cosmetics, tea, sweet Stevia ignorant agent. Main
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