High-yield method for co-producing resistant dextrin, beta-cyclodextrin and F42 HFCS (high fructose corn syrup)

Abstract

The invention discloses a high-yield method for co-producing the resistant dextrin, the beta-cyclodextrin and the F42 HFCS. According to the process, corn starch serves as a raw material, digestible dextrin is converted into the beta-cyclodextrin through burning, liquefaction and addition of cyclodextrin glucoxyltransferase, and composite insoluble substances are obtained through toluene composition and filtered, toluene is recycled and the beta-cyclodextrin is obtained; the surplus solution is subjected to composite saccharifying enzyme saccharification, chromatographic separation and refining, and resistant dextrin and corn syrup are obtained; and the corn syrup is subjected to isomerization and fining, and the F42 HFCS is obtained. According to the method, the high-purity resistant dextrin can be produced, the application field of the resistant dextrin is expanded, the surplus digestible mother solution is effectively used to produce the beta-cyclodextrin and the F42 HFCS, the production cost is greatly reduced, and the material usage rate and the yield are improved apparently.

Description

technical field [0001] The invention belongs to the technical field of preparing resistant dextrin from starch, in particular to a method for co-producing resistant dextrin, beta-cyclodextrin and F42 fructose syrup with high yield. Background technique [0002] Resistant dextrin, also known as indigestible dextrin, can become an integral part of a balanced diet, has the common function of water-soluble dietary fiber, and also plays an important role in regulating the physiological functions of the human body, such as reducing blood sugar, blood lipid response and improving intestinal tract health etc. Its digestive tolerance threshold is also very prominent, making the amount it digests optimally suited to achieve the desired benign changes in the gut ecosystem. Resistant dextrin is recognized as dietary fiber in Europe, the United States, Japan, China and other countries, and can be used in unlimited quantities as food and food accessories. Now it has been used in beverag...

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Problems solved by technology

The disadvantage of this method is that, on the one hand, the purity of resistant dextrin produced by this method is low, and after enzymatic hydrolysis, the content of digestible oligosaccharides and glucose is high, which is not conducive to the later refining treatment, which limits its use in people such as diabetics, The application in health food for obese patients greatly limits the application field of resistant dextrin; on the other hand, there are also related patents where the glucose syrup produced after enzymatic hydrolysis is fermented by yeast and eaten, or separated and sold as low-priced feed , the purity of resistant dextrin produced by this method can be improved, but a large amount of glucose syrup is wasted by microorganisms or sold at a low price, resulting in high production costs, high raw material consumption, small output, and high prices, which cannot meet market needs in large quantities Waiting for unfavorable situation

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