High-yield method for co-producing resistant dextrin, beta-cyclodextrin and F42 HFCS (high fructose corn syrup)
A technology of resistant dextrin and fructose syrup, applied in ion exchange regeneration, ion exchange, selective adsorption, etc., can solve the problems of high raw material consumption, waste of glucose syrup, low purity of resistant dextrin, etc., and achieve the improvement of raw material Utilization and yield, reducing the difficulty of refining process, reducing the effect of non-functional components
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[0021] 1 Charcoal gelatinization reaction: Add cornstarch to a heating device with a mixer, spray 1% hydrochloric acid while stirring, then mix well, heat slowly, and heat up to 150°C for 60 minutes to obtain pyrodextrin.
[0022] 2. Liquefaction: Make a 20% solution of pyrodextrin, adjust the pH to 5.8, add 0.5 L / ton of dry starch high-temperature α-amylase, and hydrolyze it at 105°C for 20 minutes to obtain crude resistant dextrin.
[0023] 3 Transformation: Cool down the temperature of the liquefied liquid to 58°C, the pH value is 7.0, add cyclodextrin glucosyltransferase at a concentration of 7 enzyme activity units per gram of starch, add 1% toluene, carry out stirring reaction for 64 hours, and then carry out vacuum Filter the insoluble compound, recover toluene, concentrate and refine, crystallize and dry to obtain the β-cyclodextrin product.
[0024] 4 Saccharification, chromatographic separation: after vacuum filtration, the solution is adjusted to pH 4.23, 0.9L / ton (...
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