Butyrate starch preparing method

A technology of butyrate and starch, applied in the function of food ingredients, food science, application and other directions, can solve the problems of fast digestion and absorption, low bioavailability, butyric acid odor, etc., to achieve simple operation, good resistance Enzymatic hydrolysis ability, the effect of avoiding absorption

Active Publication Date: 2019-03-01
JIANGNAN UNIV
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Problems solved by technology

[0006] In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide a method for preparing butyrate starch, which solves the problem of butyric ac

Method used

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Embodiment 1

[0044] Add cornstarch into water to make 40% starch milk (w / w). During the reaction, the temperature is controlled by a water bath to be 40° C., and the pH is adjusted with 0.75mol / L sodium hydroxide solution. The pH is controlled at 7.5 to 8.5, and then Add 10mL, 20mL, 30mL, 40mL, and 60mL of butyric anhydride dropwise with a constant-flow pump, add butyric anhydride in about 2 hours, and continue the reaction for 2 hours. Stop the reaction, and adjust the pH to 5.5-6.5 with 1mol / L hydrochloric acid solution. Wash the product with deionized water until neutral, centrifuge, dry the precipitate at 40°C until the water content is less than 14%, grind, pass through a 100-mesh sieve, package and store in a desiccator until use.

[0045] Native starch and butyrate starch with different degrees of substitution were digested in vitro by Englyst method. The starch was gelatinized in an autoclave (121° C.) for 20 min before digestion.

[0046]Table 1 Contents of fast digestible, slow...

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Abstract

The invention discloses a butyrate starch preparing method and belongs to the technical fields of preparation and application of modified starch and deep processing of agricultural products. Accordingto the butyrate starch preparing method, starch serve as the principal raw material for esterification with butyric anhydride to achieve stabilization of butyric acid and small releasing of the butyric acid in gastric juice; resistant starch prepared through esterification of the butyric acid and the starch can well avoid being absorbed in small intestines, resist digestion by enzymes secreted bybrush borders, selectively release micromolecular effective load in large intestines; fermented by enteric microorganisms, the resistant starch can produce more short-chain fatty acids and probiotics, thereby improving the bioavailability of the butyric acid and expanding the application range of the starch. Compared with other butyric acid products, the butyrate starch is odorless and can be esterified into the resistant starch to convey the butyric acid to the rear end of the intestines; the butyrate starch can be fermented by the enteric microorganisms and decomposed by bacterial esteraseinto butyric acid and other short-chain fatty acids and increase the content of the probiotics, thereby belonging to probiotic products.

Description

technical field [0001] The invention relates to a method for preparing butyrate starch, which belongs to the technical field of preparation and application of modified starch and the technical field of deep processing of agricultural products. Background technique [0002] Butyric acid is a short-chain fatty acid, which has multiple physiological functions such as maintaining intestinal health, enhancing body immunity, inducing tumor cell apoptosis, and anti-oxidation. After butyrate is absorbed by colonic mucosal epithelial cells, it can be transported to the liver for further metabolism or consumed by colonic mucosal epithelial cells as an energy source. Its final metabolites are ketone bodies and carbon dioxide, which provide about 75% of the energy for intestinal mucosal cells. Almost all butyric acid can be absorbed and utilized by intestinal epithelial cells. The isotope tracer method found that butyric acid can enter the general blood circulation. In addition, in per...

Claims

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Application Information

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IPC IPC(8): C08B31/04A23L29/30
CPCA23L29/30A23V2002/00C08B31/04A23V2200/3204A23V2250/5118
Inventor 洪雁戴栋栋顾正彪程力李兆丰李才明
Owner JIANGNAN UNIV
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