CN113383967A - Preparation method of bamboo shoot dietary fiber chronic starch compound, product and application - Google Patents
Preparation method of bamboo shoot dietary fiber chronic starch compound, product and application Download PDFInfo
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- 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
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/20—Reducing nutritive value; Dietetic products with reduced nutritive value
- A23L33/21—Addition of substantially indigestible substances, e.g. dietary fibres
- A23L33/22—Comminuted fibrous parts of plants, e.g. bagasse or pulp
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- 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
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/20—Reducing nutritive value; Dietetic products with reduced nutritive value
- A23L33/21—Addition of substantially indigestible substances, e.g. dietary fibres
-
- 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
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
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Abstract
The invention relates to a preparation method, a product and application of a bamboo shoot dietary fiber chronic starch compound, and belongs to the technical field of food processing. The method comprises the steps of taking leftovers of square bamboo shoots as raw materials, carrying out micro-jet two-step treatment, carrying out dynamic high-pressure micro-jet treatment on the square bamboo shoots to obtain a square bamboo shoot dietary fiber nano dispersion liquid, and mixing the square bamboo shoot dietary fiber nano dispersion liquid with a starch solution to carry out dynamic high-pressure micro-jet treatment to obtain a square bamboo shoot dietary fiber chronic starch compound. The method has the advantages of simple process, mild reaction and high product quality, and the dietary fiber of the square bamboo shoot treated by the micro-jet flow and the starch are easy to form hydrogen bonds to form a stable square bamboo shoot dietary fiber chronic starch compound.
Description
Technical Field
The invention belongs to the technical field of food processing, and particularly relates to a preparation method of a bamboo shoot dietary fiber chronic starch compound, a product and application thereof.
Background
Starch is the most important source of energy in the human body and is composed primarily of linear amylose and highly branched amylopectin. Starch is not only a major component of bread, rice and noodles, but is also widely used in the food and non-food industries as a thickener, bulking agent, gelling agent, and the like. The rate of starch digestion and absorption is therefore closely related to the blood glucose level of the human body. From a nutritional and health perspective, Slowly Digested Starch (SDS) releases glucose more slowly, thereby contributing to stabilizing postprandial blood glucose levels. The Resistant Starch (RS) can not be enzymolyzed by digestive enzymes in the small intestine of a human body, but can be fermented by intestinal microorganisms to generate short-chain fatty acid, so that the health of the human body is promoted. However, native starch has limited its use in the food industry due to its easy retrogradation, poor stability and low SDS and RS content. Therefore, increasing the content and stability of SDS and RS in starch and suppressing postprandial blood glucose levels in starch-based foods are important concerns of researchers.
China is the biggest producing country of the square bamboo shoots in the world, the annual square bamboo shoots are produced by more than 500 million tons, and the yield value reaches more than 300 billion yuan. The bamboo shoots as a forest vegetable which is well liked by people are delicious and have high nutritive value. The content of fat and cholesterol in the bamboo shoots is low, and the contents of protein, carbohydrate, dietary fiber, mineral elements, vitamins and the like are rich. The method is characterized in that the yield of the square bamboo shoots in China is 40% of the annual yield of the square bamboo shoots, and other square bamboo shoots are processed, but the square bamboo shoots are aged quickly in the processes from harvesting, fresh keeping to processing, the contents of cellulose, lignin and the like are increased rapidly, and the aged parts are discarded as leftovers during processing treatment, so that the waste of resources is caused. Cellulose, lignin, hemicellulose and the like are main components of the dietary fiber, so the dietary fiber is a better dietary fiber resource.
The addition of dietary fiber in starch has the advantages of safety, effectiveness and convenience in practical application. However, in the prior art, only dietary fiber and starch are simply mixed, wherein the interaction between the dietary fiber and the starch is weak, the stability is poor, and the prepared product has poor slow digestion performance such as inhibiting the increase of the postprandial blood glucose concentration.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method for preparing a slow-digestion starch complex containing dietary fiber of bamboo shoot;
the invention also aims to provide a slowly digestible starch compound containing the bamboo shoot dietary fiber;
the invention also aims to provide the application of the slow-digestion starch containing the bamboo shoot dietary fiber in meal replacement food for diabetes, obesity, cardiovascular diseases and other diseases.
In order to achieve the purpose, the invention provides the following technical scheme:
1. a preparation method of a bamboo shoot dietary fiber chronic starch compound comprises the following steps:
(1) adding water into the square bamboo shoot dietary fiber powder to prepare a fiber suspension, adding a stabilizer, and carrying out high-pressure micro-jet treatment to obtain a nano dietary fiber dispersion liquid;
(2) uniformly mixing a starch solution and the nano dietary fiber dispersion liquid in the step (1), and performing high-pressure micro-jet treatment to obtain a mixed liquid;
(3) and (3) curing the mixed solution obtained in the step (2), cooling and freeze-drying to obtain the bamboo shoot dietary fiber chronic starch compound.
Preferably, in the step (1), the water-insoluble dietary fiber content of the bamboo shoot dietary fiber powder is 71.21-83.87%, and the water-soluble dietary fiber content is 13.13-17.80%.
Preferably, the square bamboo shoot dietary fiber powder is prepared by the following method:
A. cutting square bamboo shoots into pieces, blanching, drying and crushing to obtain coarse square bamboo shoot powder;
B. and (3) adding water into the square bamboo shoot coarse powder, uniformly mixing, and extracting by an ultrasonic-assisted enzymolysis method to obtain the square bamboo shoot dietary fiber powder.
Preferably, in the step A, the square bamboo shoots are cut into blocks, blanched in boiling water for 8-10min, drained, dried at 50-60 ℃ until the water content is 6-9%, and crushed and sieved by a 60-80-mesh sieve to obtain the square bamboo shoot coarse powder.
Preferably, in the step B, the square bamboo shoot coarse powder is taken, and the mass volume ratio of the square bamboo shoot coarse powder to the square bamboo shoot coarse powder is 1:35, g: ml, adding water, uniformly mixing to obtain a square bamboo shoot coarse powder mixed solution, wherein the mass volume ratio of the complex enzyme to the square bamboo shoot coarse powder mixed solution is 2-6:100, g: and ml, adding a complex enzyme, carrying out enzymolysis for 60-180min at the ultrasonic power of 400-1200W, pH value of 7.0-10.0 and the temperature of 40-60 ℃, mixing the complex enzyme with laccase and alkaline protease according to the mass ratio of 1:1, finally carrying out enzyme deactivation and cooling to room temperature, adding 95% ethanol with the volume of 4 times of that of the complex enzyme for precipitation for 2h, centrifuging for 15min at 8000r/min, taking the precipitate, and freeze-drying to obtain the bamboo shoot dietary fiber powder.
Preferably, in the step (1), the mass ratio of the square bamboo shoot dietary fiber powder to the stabilizer is 50: 0.3-0.5.
Preferably, in the step (1), the stabilizer is at least one of xanthan gum, carrageenan, tamarind gum, abelmoschus manihot gum, monoglyceride, and sucrose ester.
Preferably, in the step (1), the high-pressure micro-jet treatment specifically comprises: circularly treating at 20-30 ℃ for 5-10 times at 100-200MPa for 90-120s each time.
Preferably, in the step (2), the mass fraction of the starch solution is 6-10%, the mass fraction of the dietary fiber nano-dispersion liquid is 4-6%, and the volume ratio of the starch solution to the dietary fiber nano-dispersion liquid is 1: 0.5-1.
Preferably, in the step (2), the high-pressure micro-jet treatment specifically comprises: circularly treating at 20-30 ℃ for 3-5 times under 50-200MPa for 180-240s each time.
Preferably, in the step (3), the curing is specifically: adding artemisia desertorum glue and myristic acid into the mixed solution in the step (2) until the final concentration of the artemisia desertorum glue is 0.4-0.8g/L and the final concentration of the myristic acid is 0.008-0.016g/L, and stirring and pasting at the rotation speed of 150-200r/min for 20-40min at the temperature of 90-100 ℃.
Preferably, the cooling treatment specifically comprises: standing at 4 deg.C for 12 h.
Preferably, the bamboo shoot dietary fiber chronic starch compound is freeze-dried, crushed and sieved by a 80-mesh sieve.
2. The bamboo shoot dietary fiber chronic starch compound prepared by the method.
3. The bamboo shoot dietary fiber chronic starch compound is applied as a meal replacement food for patients with diabetes, obesity and cardiovascular diseases.
The invention has the beneficial effects that:
(1) according to the invention, a high-pressure micro-jet two-step method is used for preparing the bamboo shoot dietary fiber chronic starch compound, the bamboo shoot dietary fiber powder is processed by high-pressure micro-jet in the first step to obtain a nano dietary fiber dispersion liquid, and the nano dietary fiber dispersion liquid and a starch solution are mixed for high-pressure micro-jet processing to prepare the bamboo shoot dietary fiber slow-digestion starch compound. According to the first step of high-pressure micro-jet treatment, the particle size of the dietary fiber can be effectively reduced due to the high-frequency vibration, the violent pressure difference, the shearing and the cavitation of the square bamboo shoot dietary fiber powder, so that the nano dietary fiber is dispersed more uniformly. The second step of high-pressure micro-jet treatment can destroy the crystal structure, surface structure and glycosidic bond of the starch due to high-frequency vibration, severe pressure difference, shearing and cavitation of the starch, reduce molecular weight, realize molecular rearrangement to form a stable structure, and further improve the content of chronic starch (the chronic starch is the general name of slowly digestible starch and resistant starch) in the starch. In addition, due to the second step of high-pressure micro-jet treatment, the dietary fiber treated by the high-pressure micro-jet treatment and the starch treated by the high-pressure micro-jet treatment can form a compound more easily through the actions of hydrogen bonds, van der waals force and the like, and the viscosity of a compound system and the physicochemical properties such as the starch swelling degree in the compound are changed, so that the slow digestion performance of the compound is improved.
(2) The dietary fiber treated by the high-pressure micro-jet flow can better wrap the starch, so that a barrier for preventing the starch from enzymolysis is formed.
(3) The dietary fiber raw material has low price, simple process, mild reaction and high product quality, and provides a new idea for utilizing the processing waste of the square bamboo shoots.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a graph of starch hydrolysis;
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Example 1
Preparing a bamboo shoot dietary fiber chronic starch compound
Taking 5kg of square bamboo shoot can processing leftovers, cutting into small pieces, blanching in boiling water for 8min, draining, drying at 50 ℃ by using a blast drying oven until the water content is 8%, crushing by using a plant tissue triturator, and sieving by using a 60-mesh sieve to obtain about 400g of square bamboo shoot coarse powder serving as a main component. Taking coarse powder of square bamboo shoots, and mixing the coarse powder with the mass-volume ratio of 1:35, g: ml, adding water, uniformly mixing to obtain a square bamboo shoot coarse powder mixed solution, wherein the mass volume ratio of the complex enzyme to the square bamboo shoot coarse powder mixed solution is 2:100, g: and ml, adding a complex enzyme (the complex enzyme is formed by mixing laccase and alkaline protease according to the mass ratio of 1: 1). Performing enzymolysis at 400W, pH value and 40 deg.C for 60 min. And after the enzymolysis is finished, adding 95% ethanol with the volume of 4 times of the volume of the mixture for precipitation for 2 hours, then centrifuging the mixture for 15 minutes at 8000r/min, taking the precipitate, freeze-drying the precipitate, and sieving the precipitate with a 200-mesh sieve to obtain the dietary fiber powder of the square bamboo shoots. The water-insoluble dietary fiber content of the prepared bamboo shoot dietary fiber powder is 71.21%, and the water-soluble dietary fiber content of the prepared bamboo shoot dietary fiber powder is 17.80%. Taking 50g of square bamboo shoot dietary fiber powder and 1000mL of pure water to prepare a 5% square bamboo shoot dietary fiber suspension, then respectively adding 0.1g of tamarind gum and 0.2g of abelmoschus manihot gum as composite stabilizers, and circularly treating for 5 times at 100MPa and 20 ℃ by adopting a dynamic high-pressure nano dispersion machine, wherein the treatment time is 90s each time, so as to obtain a nano dietary fiber dispersion liquid. Adding 1000mL of starch solution with the mass fraction of 8% into the nano dietary fiber dispersion liquid, fully and uniformly mixing by using a high-speed homogenizing dispersion machine, and then circularly performing micro-jet treatment for 3 times at 50MPa and 20 ℃ by using a dynamic high-pressure nano dispersion machine for 180s each time. After the dynamic high-pressure micro-jet treatment is finished, 0.8g of artemisia glue and 0.016g of myristic acid are added, then stirring and pasting are carried out for 30min at the temperature of 95 ℃ and the rotating speed of 160r/min, the mixture is placed in a refrigerator at the temperature of 4 ℃ for 12h, and then freeze drying, crushing and 80-mesh sieving are carried out, so that the light yellow square bamboo shoot dietary fiber chronic starch compound can be obtained. The content of chronic starch was determined to be 59.97%, which consists of slowly digestible starch and resistant starch.
Example 2
The difference from the example 1 is that 1000mL starch solution with the mass fraction of 8% is added into the nano dietary fiber dispersion liquid, the mixture is fully and uniformly mixed by a high-speed homogenizing dispersion machine, and then the micro-jet flow treatment is carried out for 3 times at the temperature of 20 ℃ under the pressure of 100MPa by using a dynamic high-pressure nano dispersion machine, wherein each time is 180 s.
Example 3
The difference from the example 1 is that 1000mL starch solution with the mass fraction of 8% is added into the nano dietary fiber dispersion liquid, the mixture is fully and uniformly mixed by a high-speed homogenizing dispersion machine, and then the micro-jet flow treatment is carried out for 3 times at the temperature of 20 ℃ under 150MPa by using a dynamic high-pressure nano dispersion machine, wherein each time is 180 s.
Example 4
The difference from the example 1 is that 1000mL starch solution with the mass fraction of 8% is added into the nano dietary fiber dispersion liquid, the mixture is fully and uniformly mixed by a high-speed homogenizing dispersion machine, and then the micro-jet flow treatment is carried out for 3 times at the temperature of 20 ℃ under the pressure of 200MPa by using a dynamic high-pressure nano dispersion machine, wherein each time is 180 s.
Example 5
Preparing a bamboo shoot dietary fiber chronic starch compound
Taking 10kg of square bamboo shoot can processing leftovers, cutting into small pieces, blanching in boiling water for 10min, draining, drying at 60 ℃ by using a blast drying oven until the water content is 8%, crushing by using a plant tissue triturator, and sieving by using a 80-mesh sieve to obtain about 900g of coarse powder mainly comprising the square bamboo shoots. Taking coarse powder of square bamboo shoots, and mixing the coarse powder with the mass-volume ratio of 1:35, g: ml, adding water, uniformly mixing to obtain a square bamboo shoot coarse powder mixed solution, wherein the mass volume ratio of the complex enzyme to the square bamboo shoot coarse powder mixed solution is 4:100, g: and ml, adding a complex enzyme (the complex enzyme is formed by mixing laccase and alkaline protease according to the mass ratio of 1: 1). Performing enzymolysis at 50 deg.C for 120min under the condition of ultrasonic power of 800W, pH value of 9.0. And after the enzymolysis is finished, adding 95% ethanol with 4 times of volume for precipitation for 2h, then centrifuging for 15min at 38000r/min, taking the precipitate, freeze-drying, and sieving with a 200-mesh sieve to obtain the dietary fiber powder of the square bamboo shoots. The water-insoluble dietary fiber content of the prepared bamboo shoot dietary fiber powder is 76.58%, and the water-soluble dietary fiber content is 16.64%. Taking 50g of square bamboo shoot dietary fiber powder and 1000mL of pure water to prepare a 5% square bamboo shoot dietary fiber suspension, then respectively adding 0.15g of tamarind gum and 0.25g of abelmoschus manihot gum as composite stabilizers, and circularly treating for 7 times at 25 ℃ and 150MPa by using a dynamic high-pressure nano dispersion machine, wherein the treatment time is 120s each time, so as to obtain the nano dietary fiber dispersion liquid. Adding 1000mL of starch solution with the mass fraction of 8% into the nano dietary fiber dispersion liquid, fully and uniformly mixing by using a high-speed homogenizing dispersion machine, and then circularly performing micro-jet treatment for 4 times at 25 ℃ under 100MPa by using a dynamic high-pressure nano dispersion machine for 240s each time. After the dynamic high-pressure micro-jet treatment is finished, 1.2g of artemisia glue and 0.024g of myristic acid are added, then stirring and pasting are carried out for 30min at the temperature of 95 ℃ and the rotating speed of 160r/min, the mixture is placed in a refrigerator at the temperature of 4 ℃ for 12h, and the mixture is freeze-dried, crushed and sieved by a sieve of 80 meshes, so that the light yellow square bamboo shoot dietary fiber chronic starch compound can be obtained. The content of chronic starch was determined to be 63.03%, said chronic starch consisting of slowly digestible starch and resistant starch.
Example 6
Preparing a bamboo shoot dietary fiber chronic starch compound
Taking 3kg of square bamboo shoot can processing leftovers, cutting into small pieces, blanching in boiling water for 10min, draining, drying at 50 ℃ by using a blast drying oven until the water content is 8%, crushing by using a plant tissue triturator, and sieving by using a 60-mesh sieve to obtain about 250g of square bamboo shoot coarse powder serving as a main component. Taking coarse powder of square bamboo shoots, and mixing the coarse powder with the mass-volume ratio of 1:35, g: and ml, adding water, uniformly mixing to obtain a square bamboo shoot coarse powder mixed solution, wherein the mass volume ratio of the complex enzyme to the square bamboo shoot coarse powder mixed solution is 6:100, g: and ml, adding a complex enzyme (the complex enzyme is formed by mixing laccase and alkaline protease according to the mass ratio of 1: 1). Performing enzymolysis at 60 deg.C for 180min under the condition of ultrasonic power of 1200W, pH value of 10.0. And after the enzymolysis is finished, adding 95% ethanol with the volume of 4 times of the volume of the mixture for precipitation for 2 hours, then centrifuging the mixture for 15 minutes at 8000r/min, taking the precipitate, freeze-drying the precipitate, and sieving the precipitate with a 200-mesh sieve to obtain the dietary fiber powder of the square bamboo shoots. The water-insoluble dietary fiber content of the prepared bamboo shoot dietary fiber powder is 83.87%, and the water-soluble dietary fiber content of the prepared bamboo shoot dietary fiber powder is 13.13%. Taking 50g of square bamboo shoot dietary fiber powder and 1000mL of pure water to prepare a 5% square bamboo shoot dietary fiber suspension, then respectively adding 0.2g of tamarind gum and 0.3g of abelmoschus manihot gum as composite stabilizers, and circularly treating for 10 times at 200MPa and 30 ℃ by adopting a dynamic high-pressure nano dispersion machine, wherein the treatment time is 100s each time, so as to obtain a nano dietary fiber dispersion liquid. Adding 1000mL of starch solution with the mass fraction of 8% into the nano dietary fiber dispersion liquid, fully and uniformly mixing by using a high-speed homogenizing dispersion machine, and then circularly performing micro-jet treatment for 5 times at the temperature of 30 ℃ and 200MPa by using a dynamic high-pressure nano dispersion machine for 210s each time. After the dynamic high-pressure micro-jet treatment is finished, 1.62g of artemisia glue and 0.032g of myristic acid are added, then stirring and pasting are carried out for 30min at the temperature of 95 ℃ and the rotating speed of 160r/min, the mixture is placed in a refrigerator at the temperature of 4 ℃ for 12h, and the mixture is freeze-dried, crushed and sieved by a sieve of 80 meshes, so that the light yellow square bamboo shoot dietary fiber chronic starch compound can be obtained. The content of chronic starch was determined to be 60.06%, which consists of slowly digestible starch and resistant starch.
Starch treated by microfluidization under the conditions of example 1 was mixed with common dietary fiber to obtain a common mixture, and then contents of fast-digestible starch (RDS), slow-digestible starch (SDS), and anti-digestible starch (RS) in natural starch, the common mixture, and the square bamboo shoot dietary fiber chronic starch complexes prepared in examples 1 to 4 were respectively tested, and the results are shown in table 1, and then hydrolysis tests were respectively performed, and the test results are shown in fig. 1.
TABLE 1
As can be seen from Table 1, the content of the slow-digestion starch (SDS) and the anti-digestion starch (RS) of the bamboo shoot dietary fiber chronic starch compound prepared by the high-pressure micro-jet two-step method is obviously higher than that of natural starch.
As can be seen from FIG. 1, compared with natural starch or a common mixture, the square bamboo shoot dietary fiber chronic starch compound prepared by the high-pressure micro-jet two-step method has lower hydrolysis rate and shows better slow digestion characteristics.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (10)
1. A preparation method of a bamboo shoot dietary fiber chronic starch compound is characterized by comprising the following steps:
(1) adding water into the square bamboo shoot dietary fiber powder to prepare a fiber suspension, adding a stabilizer, and carrying out high-pressure micro-jet treatment to obtain a nano dietary fiber dispersion liquid;
(2) uniformly mixing a starch solution and the nano dietary fiber dispersion liquid in the step (1), and performing high-pressure micro-jet treatment to obtain a mixed liquid;
(3) and (3) curing the mixed solution obtained in the step (2), cooling and freeze-drying to obtain the bamboo shoot dietary fiber chronic starch compound.
2. The method for preparing the bamboo shoot dietary fiber chronic starch compound as claimed in claim 1, wherein in the step (1), the water-insoluble dietary fiber content of the bamboo shoot dietary fiber powder is 71.21-83.87%, and the water-soluble dietary fiber content of the bamboo shoot dietary fiber powder is 13.13-17.80%.
3. The preparation method of the compound of the bamboo shoot dietary fiber and the chronic starch as claimed in claim 2, wherein in the step (1), the mass ratio of the bamboo shoot dietary fiber powder to the stabilizer is 50: 0.3-0.5.
4. The method according to claim 3, wherein in the step (1), the stabilizer is at least one of xanthan gum, carrageenan, tamarind gum, abelmoschus manihot gum, monoglyceride, and sucrose ester.
5. The preparation method of the bamboo shoot dietary fiber chronic starch compound as claimed in any one of claims 1 to 4, wherein in the step (1), the high-pressure micro-jet treatment is specifically as follows: circularly treating at 20-30 ℃ for 5-10 times at 100-200MPa for 90-120s each time.
6. The method for preparing the bamboo shoot dietary fiber chronic starch compound as claimed in claim 1, wherein in the step (2), the mass fraction of the starch solution is 6-10%, the mass fraction of the dietary fiber nano-dispersion liquid is 4-6%, and the volume ratio of the starch solution to the dietary fiber nano-dispersion liquid is 1: 0.5-1.
7. The preparation method of the bamboo shoot dietary fiber chronic starch compound as claimed in claim 1 or claim 6, wherein in the step (2), the high-pressure micro-jet treatment is specifically as follows: circularly treating at 20-30 ℃ for 3-5 times under 50-200MPa for 180-240s each time.
8. The preparation method of the bamboo shoot dietary fiber chronic starch compound as claimed in claim 1, wherein in the step (3), the curing is specifically as follows: adding artemisia desertorum glue and myristic acid into the mixed solution in the step (2) until the final concentration of the artemisia desertorum glue is 0.4-0.8g/L and the final concentration of the myristic acid is 0.008-0.016g/L, and stirring and pasting at the rotation speed of 150-200r/min for 20-40min at the temperature of 90-100 ℃.
9. A bamboo shoot dietary fiber chronic starch complex prepared by the method of any one of claims 1-8.
10. The use of the bamboo shoot dietary fiber chronic starch complex as claimed in claim 9 as a meal replacement food for patients with diabetes, obesity or cardiovascular diseases.
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