阅读说明：本技术 一种高抗消化特性改性谷物淀粉加工工艺 (Processing technology of modified cereal starch with high digestion resistance ) 是由 丁超 于 2020-03-26 设计创作，主要内容包括：本发明公开了一种高抗消化特性改性谷物淀粉加工工艺,包括如下步骤：S1:准备柠檬酸和淀粉为原料；S2:将柠檬酸和淀粉混合搅拌,搅拌后静置一定时间,得到柠檬酸淀粉混合液；S3:将柠檬酸淀粉混合液进行恒温干燥得到柠檬酸淀粉混合物；S4:将柠檬酸淀粉混合物采用谷物淀粉红外辐射干热改性工序进行加工得到柠檬酸淀粉酯；S5:将柠檬酸淀粉酯采用蒸馏水进行洗涤振荡；S6:洗涤振荡完毕后进行干燥工序,得到高抗性改性淀粉。本发明的产品为富含高抗消化特性的改性淀粉,改性后的具有高抗消化特性的淀粉不仅可以作为药物制作的基材,而且可以作为药物、益生菌缓释载体,具有温和、安全性高、刺激性小、耐高温、不溶于水、高膨胀率等特征。(The invention discloses a processing technology of modified cereal starch with high digestion resistance, which comprises the following steps: s1, preparing citric acid and starch as raw materials; s2, mixing and stirring citric acid and starch, and standing for a certain time after stirring to obtain a citric acid-starch mixed solution; s3, drying the mixed solution of the citric acid starch at constant temperature to obtain a citric acid starch mixture; s4, processing the citric acid starch mixture by adopting a grain starch infrared radiation dry heat modification procedure to obtain citric acid starch ester; s5, washing and oscillating the citric acid starch ester by using distilled water; and S6, carrying out a drying procedure after washing and shaking are finished to obtain the high-resistance modified starch. The product of the invention is modified starch rich in high digestion resistance, and the modified starch with high digestion resistance can be used not only as a base material for preparing medicines, but also as a slow release carrier for medicines and probiotics, and has the characteristics of mildness, high safety, small irritation, high temperature resistance, insolubility in water, high expansion rate and the like.)

1. A process for processing modified cereal starch with high digestion resistance, comprising the steps of:

s1, preparing citric acid and starch as raw materials;

s2, mixing and stirring citric acid and starch, and standing for a certain time after stirring to obtain a citric acid-starch mixed solution;

s3, drying the mixed solution of the citric acid starch at constant temperature to obtain a citric acid starch mixture;

s4, processing the citric acid starch mixture by adopting a grain starch infrared radiation dry heat modification procedure to obtain citric acid starch ester;

s5, washing and oscillating the citric acid starch ester by using distilled water;

and S6, carrying out a drying procedure after washing and shaking are finished to obtain the high-resistance modified starch.

2. The process for processing modified cereal starch with high digestibility according to claim 1, wherein the process comprises the following steps: in step S2, citric acid and starch are mixed by using a mixing and stirring device.

3. The process for processing modified cereal starch with high digestibility according to claim 1, wherein the process comprises the following steps: and in the step S2, standing for 12-20 min after stirring.

4. The process for processing modified cereal starch with high digestibility according to claim 1, wherein the process comprises the following steps: in the step S3, the drying temperature is kept at 135-165 ℃ at a constant temperature, and the drying time is 85-100 min.

5. The process for processing modified cereal starch with high digestibility according to claim 1, wherein the process comprises the following steps: the grain starch infrared radiation dry heat modification process comprises a citric acid starch mixture cross-linking esterification process under a high temperature condition, and infrared radiation is adopted, so that the digestion enzyme enzymolysis resistance of starch is improved, and the digestion resistance of the esterified starch is enhanced.

6. The process for preparing modified cereal starch with high resistance to digestion according to claim 5, wherein: the infrared reaction intensity is 200-300 ℃, and the infrared reaction time is 10-120 min.

7. The process for processing modified cereal starch with high digestibility according to claim 1, wherein the process comprises the following steps: in the step S5, the washing time is 25-35 min.

8. The process for processing modified cereal starch with high digestibility according to claim 1, wherein the process comprises the following steps: in the step S6, the drying step is preferably spray drying.

9. The process for processing modified cereal starch with high digestibility according to claim 1, wherein the process comprises the following steps: the pH value of the citric acid starch mixed solution is 1-5.

10. The process for processing modified cereal starch with high digestibility according to claim 1, wherein the process comprises the following steps: the ratio of the citric acid starch is 0.2-1.

Technical Field

The invention relates to the field of high-digestibility food, in particular to a processing technology of modified cereal starch with high-digestibility characteristics.

Background

The modified starch (RS) with high digestion resistance is prepared by taking natural grains as raw materials, extracting the natural starch in the grain raw materials by an alkaline leaching method, carrying out physical and chemical modification on the natural grain starch according to the application requirement of a final product, and directionally obtaining and collecting the modified grain starch with high digestion resistance without influencing the taste and performance of the modified grain starch when the modified grain starch is generated into the final product, so that the RS can be widely applied to the production fields of special dietary products, health-care products, medicinal products, daily chemicals and the like.

Under the influence of a new medical mode, medicines, health care products and special dietary products with functionality are favored. At present, about 1/3 people around the world are in the state of malnutrition such as 'three highs', overweight, obesity and the like, and researches show that RS is not digested and absorbed in stomach and small intestine and can be fermented by microbial flora in colon to generate a plurality of short chain fatty acids and gases, thereby playing the role of probiotics.

In the fields of daily supplies and special dietary products, with the rapid development of economic level and the improvement of the quality level of life of people, the development of RS is more and more popular with the Chinese market. Because the RS has the effects of resisting digestion, being non-toxic and stable, preventing colon cancer, regulating blood sugar and blood fat and the like, the RS becomes a hotspot of research in the fields of modern nutriology and medicine and pharmacology at present and shows a very important position, and the large-scale production and deep research of the RS can certainly promote the deep processing and comprehensive utilization of products in the fields of special meal food and medicine and pharmacology.

RS is a novel raw material in special dietary food and drug additives, mainly refers to a part of starch and starch products which resist digestion when passing through gastrointestinal tracts, and is classified as a novel dietary fiber by American grain chemist's society and the food nutrition committee of the institute of medical science of national academy of sciences, the RS is widely concerned because of the health effects of reducing postprandial blood sugar reaction, benefiting digestive tract health, helping colon metabolism and the like on human bodies, but the existing method for improving the RS content in the raw starch in a modification mode in the industry has the problems of low efficiency, low preparation rate, small supply quantity and the like. Aiming at the problems, the infrared dry heating equipment is independently researched and designed, the modified starch product with high RS content is prepared by combining a plurality of treatment modes in a separation mode, and the industrial production of the modified starch product with high RS content is finally realized.

Disclosure of Invention

In order to overcome the problems, the invention provides a processing technology of modified cereal starch with high digestion resistance.

The technical scheme of the invention is to provide a processing technology of modified cereal starch with high digestion resistance, which is characterized by comprising the following steps:

s1, preparing citric acid and starch as raw materials;

s2, mixing and stirring citric acid and starch, and standing for a certain time after stirring to obtain a citric acid-starch mixed solution;

s3, drying the mixed solution of the citric acid starch at constant temperature to obtain a citric acid starch mixture;

s4, processing the citric acid starch mixture by adopting a grain starch infrared radiation dry heat modification procedure to obtain citric acid starch ester;

s5, washing and oscillating the citric acid starch ester by using distilled water;

and S6, carrying out a drying procedure after washing and shaking are finished to obtain the high-resistance modified starch.

Preferably, in step S2, citric acid and starch are mixed by using a mixing and stirring device.

Preferably, in the step S2, the mixture is stirred and then left for 12 to 20 min.

Preferably, in the step S3, the drying temperature is 135-165 ℃ at a constant temperature, and the drying time is 85-100 min.

Preferably, the procedure of the grain starch infrared radiation dry heat modification comprises the procedure of crosslinking and esterifying the citric acid starch mixture at high temperature, and infrared radiation is adopted, so that the enzymolysis resistance of digestive enzyme in the starch is improved, and the digestion resistance of the esterified starch is enhanced.

Preferably, the infrared reaction intensity is 200-300 ℃, and the infrared reaction time is 10-120 min.

Preferably, in the step S5, the washing time is 25 to 35 min.

Preferably, in step S6, the drying step is spray drying.

Preferably, the pH value of the citric acid starch mixed solution is 1-5.

Preferably, the proportion of the citric acid starch is 0.2-1.

The invention has the beneficial effects that: the modified cereal starch with high digestion resistance is a modified cereal starch with high digestion resistance, is mainly applied to the industries of special meal food, medicine and health care products, and has the effects of strong digestion resistance, no toxicity, environmental protection, low production cost, no environmental pollution, no adverse effect on human health and the like. The modified cereal starch is used as a base material of the microcapsule in the pharmaceutical industry, and has the advantages of being mild, small in irritation, free of influence on the texture and flavor of the core material and the like. In the aspect of technical indexes, compared with the traditional dry heat modification mode, the infrared dry heat treatment is adopted to modify the natural starch, the modified starch product is rich in high-content RS, the production efficiency of the modified starch is greatly improved, and all indexes of the obtained modified starch product meet related national regulations.

The infrared radiation dry heat treatment of the grain starch is carried out to improve the RS content in the natural grain starch, so that the citric acid and the starch absorb the infrared radiation, the reaction temperature of the citric acid and the starch is improved, and the citric acid and the starch are promoted to carry out a relatively quick and sufficient esterification crosslinking effect at high temperature. The infrared radiation dry heat modified cereal starch technology can promote the digestion resistance of the cereal starch to be improved, the preparation efficiency of the modified starch with high RS content is increased, and the modified cereal starch prepared by the technology has the advantages of safety, reliability, excellent performance and the like.

The product of the invention is modified starch rich in high digestion resistance, and the modified starch with high digestion resistance can be used not only as a base material for preparing medicines, but also as a slow release carrier for medicines and probiotics, and has the characteristics of mildness, high safety, small irritation, high temperature resistance, insolubility in water, high expansion rate and the like. Has effects in resisting digestion, reducing cholesterol, maintaining intestinal health, controlling body quality, and stabilizing postprandial blood sugar and insulin. The modified starch component with high digestion resistance is used as a base material of special meal food and medicines, and has the characteristics of mildness, durability, high safety, small irritation and the like.

Drawings

FIG. 1 is a diagram of the mechanism of the esterification reaction of citric acid according to the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in FIG. 1, a process for processing a modified cereal starch with high digestion resistance according to the present invention comprises the following examples: