CN111423520A - Processing technology of modified cereal starch with high digestion resistance - Google Patents
Processing technology of modified cereal starch with high digestion resistance Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/02—Esters
- C08B31/04—Esters of organic acids, e.g. alkenyl-succinated starch
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
- A23L29/30—Foods or foodstuffs containing additives; Preparation or treatment thereof containing carbohydrate syrups; containing sugars; containing sugar alcohols, e.g. xylitol; containing starch hydrolysates, e.g. dextrin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/003—Crosslinking of starch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Biochemistry (AREA)
- Molecular Biology (AREA)
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- Food Science & Technology (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
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Abstract
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.
Description
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:
example 1:
the invention relates to 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 the citric acid and the starch by a mixing and stirring device, and standing for 12min 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, and drying at the constant temperature of 135 ℃ for 85 min;
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 for 25 min;
and S6, carrying out spray drying after washing and shaking are finished to obtain the high-resistance modified starch.
In a preferred embodiment of the invention, the procedure of modifying the cereal starch by infrared radiation and dry heat comprises the step of crosslinking and esterifying the citric acid starch mixture at a high temperature, and the infrared radiation is adopted to improve the enzymolysis resistance of digestive enzymes in the starch, so that the digestion resistance of the esterified starch is enhanced, wherein the infrared reaction intensity is 200 ℃, the infrared reaction time is 10min, the pH value of the citric acid starch mixed solution is 1, and the citric acid starch ratio is 0.2.
Example 2:
the invention relates to 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 the citric acid and the starch by a mixing and stirring device, and standing for 15min after stirring to obtain a citric acid starch mixed solution;
s3, drying the mixed solution of the citric acid and the starch at constant temperature to obtain a mixture of the citric acid and the starch, wherein the drying temperature at constant temperature is 145 ℃, and the drying time is 90 min;
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 for 28 min;
and S6, carrying out spray drying after washing and shaking are finished to obtain the high-resistance modified starch.
In a preferred embodiment of the invention, the procedure of modifying the cereal starch by infrared radiation and dry heat comprises the step of crosslinking and esterifying the citric acid starch mixture at a high temperature, and the infrared radiation is adopted to improve the enzymolysis resistance of digestive enzymes in the starch, so that the digestion resistance of the esterified starch is enhanced, wherein the infrared reaction intensity is 225 ℃, the infrared reaction time is 30min, the pH value of the citric acid starch mixed solution is 2, and the citric acid starch ratio is 0.4.
Example 3:
the invention relates to 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 the citric acid and the starch by using a mixing and stirring device, and standing for 17min after stirring to obtain a citric acid starch mixed solution;
s3, drying the mixed solution of the citric acid and the starch at constant temperature to obtain a mixture of the citric acid and the starch, and drying at the constant temperature of 150 ℃ for 93 min;
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 for 30 min;
and S6, carrying out spray drying after washing and shaking are finished to obtain the high-resistance modified starch.
In a preferred embodiment of the invention, the procedure of modifying the cereal starch by infrared radiation and dry heat comprises the step of crosslinking and esterifying the citric acid starch mixture at a high temperature, and the infrared radiation is adopted to improve the enzymolysis resistance of digestive enzymes in the starch, so that the digestion resistance of the esterified starch is enhanced, the infrared reaction intensity is 250 ℃, the infrared reaction time is 60min, the pH value of the citric acid starch mixed solution is 3, and the citric acid starch ratio is 0.6.
Example 4:
the invention relates to 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 the citric acid and the starch by a mixing and stirring device, and standing for 19min after stirring to obtain a citric acid starch mixed solution;
s3, drying the mixed solution of the citric acid and the starch at constant temperature to obtain a mixture of the citric acid and the starch, wherein the drying temperature at constant temperature is 155 ℃, and the drying time is 98 min;
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 for 32 min;
and S6, carrying out spray drying after washing and shaking are finished to obtain the high-resistance modified starch.
In a preferred embodiment of the invention, the procedure of modifying the cereal starch by infrared radiation and dry heat comprises the step of crosslinking and esterifying the citric acid starch mixture at a high temperature, and the infrared radiation is adopted to improve the enzymolysis resistance of digestive enzymes in the starch, so that the digestion resistance of the esterified starch is enhanced, the infrared reaction intensity is 275 ℃, the infrared reaction time is 90min, the pH value of the citric acid starch mixed solution is 4, and the citric acid starch ratio is 0.8.
Example 5:
the invention relates to 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 the citric acid and the starch by a mixing and stirring device, and standing for 20min after stirring to obtain a citric acid starch mixed solution;
s3, drying the mixed solution of the citric acid and the starch at constant temperature to obtain a mixture of the citric acid and the starch, wherein the drying temperature at constant temperature is 165 ℃, and the drying time is 100 min;
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 for 35 min;
and S6, carrying out spray drying after washing and shaking are finished to obtain the high-resistance modified starch.
In a preferred embodiment of the invention, the procedure of modifying the grain starch by infrared radiation and dry heat comprises the step of crosslinking and esterifying the citric acid starch mixture at a high temperature, and the infrared radiation is adopted to improve the enzymolysis resistance of digestive enzymes in the starch, so that the digestion resistance of the esterified starch is enhanced, the infrared reaction intensity is 300 ℃, the infrared reaction time is 120min, the pH value of the citric acid starch mixed solution is 5, and the citric acid starch ratio is 1.
The main core of the technology for improving the RS content in the natural cereal starch by carrying out the dry heat treatment on the cereal starch through infrared radiation is to ensure that citric acid and starch absorb the infrared radiation, improve the reaction temperature of the citric acid and the starch and promote the citric acid and the starch to carry out quick and sufficient esterification and crosslinking at high temperature. The reaction is influenced by various factors, such as infrared reaction intensity, infrared reaction temperature, citric acid and starch ratio, pH of citric acid solution and the like. In the process of technical research and development, a large number of tests and gropes are carried out on the conditions. Some preparation conditions are shown in table 1:
table 1 starch citrate ester preparation conditions:
the processing technology product of the modified cereal starch with high digestion resistance is the modified cereal starch with high digestion resistance, and is mainly applied to the industries of special meal food, medicine and health care products. Has the same effect. 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.
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 above embodiment is only one embodiment of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
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.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021143108A1 (en) * | 2020-01-17 | 2021-07-22 | 南京财经大学 | Preparation method for citric acid modified starch with anti-digestive properties |
| US11453730B2 (en) | 2020-01-17 | 2022-09-27 | Nanjing University Of Finance And Economics | Preparation method of citric acid modified starch with digestion-resistant property |
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