CN105543311A - Processing method of resistant dextrin - Google Patents

Processing method of resistant dextrin Download PDF

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CN105543311A
CN105543311A CN201610116354.1A CN201610116354A CN105543311A CN 105543311 A CN105543311 A CN 105543311A CN 201610116354 A CN201610116354 A CN 201610116354A CN 105543311 A CN105543311 A CN 105543311A
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starch
resistant dextrin
charred
desugar
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CN105543311B (en
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刘良忠
黄婷
朱哲
王晶
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Wuhan Polytechnic University
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    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00Preparation of compounds containing saccharide radicals
    • C12P19/20Preparation of compounds containing saccharide radicals produced by the action of an exo-1,4 alpha-glucosidase, e.g. dextrose
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    • C08B30/12Degraded, destructured or non-chemically modified starch, e.g. mechanically, enzymatically or by irradiation; Bleaching of starch
    • C08B30/18Dextrin, e.g. yellow canari, white dextrin, amylodextrin or maltodextrin; Methods of depolymerisation, e.g. by irradiation or mechanically
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    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00Preparation of compounds containing saccharide radicals
    • C12P19/04Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
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    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00Preparation of compounds containing saccharide radicals
    • C12P19/14Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase, e.g. by cellulase, hemicellulase

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Abstract

The invention provides a processing method of resistant dextrin. According to the processing method, starch is taken as a raw material, resistant dextrin is obtained after acid treatment, sugar liquid spraying, granulation and drying, charring, enzyme hydrolysis, color and salt removal with a chromatographic column, sugar removal refinement and drying sequentially, and a sugar liquid obtained in the sugar removal refinement step is condensed to be used as a raw sugar liquid material for sugar liquid spraying. The sugar liquid separated in the sugar removal refinement step is condensed to be used as the raw sugar liquid material to be mixed with the starch, the yield of the product is increased by 10%-30%, and the production cost is reduced; the granulation process is added, the uniformity degree of heat treatment is effectively increased, and the charring effect and uniformity are increased.

Description

A kind of working method of resistant dextrin
Technical field
The invention belongs to starch field of deep, specifically a kind of working method of resistant dextrin.
Background technology
The research of resistant dextrin originates from Japan the nineties in 20th century, take native starch as low molecule water-soluble dietary fibre prepared by raw material, there is low viscosity, low in calories, low sugariness, high-dissolvability and good processing stability, in addition, also there is the vital role regulating human body physiological function, as reduced blood sugar, adjusting blood lipid and control body weight etc.So, resistant dextrin as food and food auxiliary material in a large number in the varieties of food items such as beverage, jam, candy, dairy products, cereal foods, functional food.
At present, the resistant dextrin production technique of industrial and existing patent is with various starch for raw material, and at high temperature thermal degradation, polymerization, become pyrodextrin, then pyrodextrin is dissolved in water, makes through the hydrolysis that adds water of enzyme, the technical process such as refining, dry.Because starch material tap density is little, thermal conduction and poor fluidity, be unfavorable for that being charred is reacted, cause existing resistant dextrin production method to there is uneven, the long reaction time of starch acid heat reaction, the problems such as product quality is not good, yield is low.Meanwhile, prior art and preparation method are in the production process of resistant dextrin, and it is high that the by product of generation comprises the component proportionss such as glucose, maltose, trisaccharide maltose, and raw material is not utilized effectively, and adds production cost, reduces product yield.In addition, containing the higher composition such as glucose, oligose in the product that prior art is produced, this application of product in patient's food such as diabetes is unfavorable for.Though there is patent fermented further by the glucose produced after enzymolysis or separate sale, this kind of method can improve resistant dextrin purity, but can cause the waste of a large amount of glucose syrup, adds production cost.In order to improve the homogeneity of being charred reaction, there is patent to add river sand in reaction process, though the homogeneity of thermal conductivity and reaction can be improved, adding the volume of reactor and the difficulty of operation, reduce production efficiency.
Summary of the invention
The present invention provides a kind of working method of resistant dextrin according to the deficiencies in the prior art, the method can improve effect and the uniformity coefficient of being charred, and then improve products production yield and product quality, and effectively can slough glucose and the oligose of product, and residual salinity, improve the content of resistant dextrin in product, improve the quality of product, reduce production cost.
Technical scheme provided by the invention is: the working method of described a kind of resistant dextrin, is characterized in that concrete steps are as follows:
(1) spray sugar process: take starch as raw material, after with hydrochloric acid soln acid treatment being carried out to it, under the condition of 50-110 DEG C, be dried to water content 3-15%, be then the liquid glucose of 20-60% to its spray concentration, the fountain height of liquid glucose be dry after the 10-60% of starch material weight;
(2) granulation process: by predrying to water content 10-40% under the condition of 50-110 DEG C for the starch material after spray sugar process in step (1), then become granularity to be 120-10 object starch granules by granulator granulation, and be dried to moisture content 3%-16%;
(3) being charred: high temperature starch granules heating dried in step (2) being reached 120-200 DEG C, and 10-300 minute is processed under this temperature condition, make starch and the reaction of being charred of carbohydrate content, namely starch occurs to decompose and the reaction that regroups, and forms the being charred powder containing resistant dextrin;
(4) enzymic hydrolysis: by the being charred powder containing resistant dextrin of obtaining after being charred reaction treatment in step (3) in being charred powder: water is that the ratio of 1:2-5 adds water and is adjusted to emulsus, and add the α-amylase of the heavy 0.01-0.5% of being charred dried bean noodles, at temperature 60-95 DEG C, pH value is enzymic hydrolysis 0.5-2.5h under the condition of 4-7; Enzymic hydrolysis completes a laggard step pH to 4.0-6.0, then adds the saccharifying enzyme of the heavy 0.01-0.5% of being charred dried bean noodles, saccharification 0.25-2.5h under 50-70 DEG C of condition;
(5) decolouring, desalting treatment: adopt macroporous resin to decolour after go out enzyme and filtration the hydrolyzed solution in step (4) after enzymic hydrolysis and saccharification, ion exchange resin desalination, or adopt macroreticular ion exchange resin synchronously to decolour and desalination; Macroporous resin and ion exchange resin can be directly commercially buy, and the liquid stream of band pigment composition crosses macroporous resin column or macroreticular ion exchange resin post, and pigment is by resin absorption, and salinity is then adsorbed by ion exchange resin;
(6) desugar process: the hydrolyzed solution after decolouring, desalting treatment in step (5) is passed through ultrafiltration process, or alcohol precipitation, or the mode that alcohol precipitation is combined with ultrafiltration process carries out desugar process, the isolated liquid glucose of desugar is concentrated to the concentration of 20-60% further, then collects the liquid glucose as spray sugar process in step (1);
(7) wet stock after desugar process in step (6) is dry or liquid material is concentrated after be dried to water content less than 6% and make resistant dextrin.
The further technical scheme of the present invention: the starch material in described step (1) is W-Gum, wheat starch, Starch rice, tapioca (flour) or yam starch; Acid treatment in step (1) is that discharge rate is the 1%-15% of dry weight of starch by predrying for the starch material hydrochloric acid soln to spraying concentration 0.1%-2.0% after water content 3-10%; Or by centrifugal or filtering separation after the hydrochloric acid soln of starch material 0.01%-1.0% immersion 10-90min, wherein hydrochloric acid soln and starch material weight ratio are 1-5:1; Described acid-treated hydrochloric acid can adopt the one in sulfuric acid, nitric acid, phosphoric acid, oxalic acid, citric acid, lactic acid, tartrate or any two kinds of composite rear replacements, and the weight ratio adopting any two kinds of acid composite is 1-10:1-10.
The present invention is technical scheme preferably: the liquid glucose in the process of spray in step (1) sugar adopts the liquid glucose deviate from from starch material when producing resistant dextrin, and to be concentrated into concentration be 20%-60%.
The present invention is technical scheme preferably: the prilling process in step (2) comprises non-slurry pelletizing, wet method rotating granulation, the granulation of wet method twin screw, fluidized granulating, mist projection granulating, and granulating raw material water content is 10%-40%.
The present invention is technical scheme preferably: in step (3), the type of heating of being charred is electrically heated, or steam heating, or thermal oil mode heats, or microwave heating, or electricity, steam, thermal oil mode and microwave composite heating; Described electrically heated, steam and thermal oil, microwave heating all adopt container or rotating pipe external heating mode; Rotating pipe type of heating is adopted to realize continuous seepage; Electricity, steam, thermal oil and microwave composite heating are the mode of arbitrarily both or triplicity in electricity, steam, thermal oil and microwave.
The present invention is technical scheme preferably: when adopting macroporous resin decolouring in step (5), its temperature is 20-60 DEG C, and flow is 1-5 per hour times column volume; When adopting macroreticular ion exchange resin decolouring and desalination, its temperature is 20-60 DEG C, flow is 1-6 per hour times column volume, the specific conductivity of the liquid after ion exchange resin treatment can control at 45 below μ s/cm, and ion exchange resin selects Zeo-karb and anionite-exchange resin to fill post or mixing dress post respectively.
The present invention is technical scheme preferably: in step (5), adopt gac to decolour in advance before resin decolorization, activated carbon dosage is the 0.2%-6% of liquid weight, pH is 4.0-6.0, temperature 20-80 DEG C, time 0.5-3 hour, carries out resin decolorization and desalination after filtration again.
The present invention is technical scheme preferably: ultrafiltration process desugar described in step (6) is 10-50 DEG C by hydrolyzed solution in temperature, pH is under the condition of 3-9, employing molecular retention amount is that the ultra-filtration membrane of 500-2500Da carries out ultrafiltration, sloughs the glucose of hydrolyzed solution small molecular, maltose and trisaccharide maltose; Described alcohol precipitation mode first hydrolyzed solution is concentrated to dry matter content 20%-60%, the ethanol adding concentration 90%-100% precipitates, ethanol is 2-6:1 with the weight ratio of hydrolysis concentrated solution, separation resistance dextrin throw out again, throw out continues to adopt the ethanol of 60%-95% to clean 1 time in the ratio that throw out weight in wet base and ethanol weight ratio are 1:0.5-3 or repeatedly; The mode that described ultrafiltration is combined with alcohol precipitation is by after hydrolyzed solution ultrafiltration desugar, is concentrated to dry matter content 20%-60%, and then adopts alcohol precipitation and clean to enriched material; Or hydrolysis concentrated solution is first carried out ultrafiltration desugar again after alcohol precipitation process.Preferred first ultrafiltration, then alcohol precipitation and clean.
The present invention is technical scheme preferably: comprise air stream drying, warm air drying, vacuum drying, roller drying, spraying dry in step (1) to its drying means in step (7).
Beneficial effect of the present invention:
(1) the present invention added spray liquid glucose before being charred, and will refine the isolated liquid glucose of desugar step, mixes, can improve the output capacity 10%-30% of product after concentrated as liquid glucose raw material with starch, reduced production cost;
(2) the present invention also add granulation process before being charred, granulation process can improve the dispersion effect of the acid of spraying sour mode treating processes, starch density after granulation increases, heat-transfer effect improves, and mobility is greatly improved, and can effectively improve heat treated degree of uniformity, the fractions caused because of inequality of being heated is avoided to be charred, and the situation that partial starch is heated inadequate occurs, effect and the uniformity coefficient of being charred can be improved, put forward high product yield and product quality;
(3) the refining isolated liquid glucose of desugar step in the present invention, be concentrated to the concentration of 20-60% further, mix as liquid glucose raw material with starch, can improve the output capacity of product, output capacity can improve 10%-30%, reduces production cost;
(4) the present invention adopts macroporous resin column to decolour, ion exchange resin desalination, or adopts macroreticular ion exchange resin synchronously to decolour and desalination, improves the automatization level of suitability for industrialized production;
(5) mode that the present invention adopts ultrafiltration to be combined with alcohol precipitation refines desugar, effectively can slough glucose and the oligose of product, and residual salinity, improves the content of resistant dextrin in product, improves the quality of product, reduces the consumption of alcohol.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.The working method of a kind of resistant dextrin as shown in Figure 1, be with W-Gum, wheat starch, Starch rice, tapioca (flour) or yam starch for raw material successively through peracid treatment and spray liquid glucose, granulating and drying, being charred, enzymic hydrolysis (comprising amylorrhexis and saccharifying enzyme saccharification), chromatographic column decolouring and desalination, desugar refine after drying obtain resistant dextrin, the liquid glucose that wherein desugar purification step obtains, through the concentrated raw material liquid glucose as spray liquid glucose, will carry out go out enzyme and filtration treatment after enzymic hydrolysis completes.
Embodiment one
A working method for resistant dextrin take W-Gum as raw material, it is characterized in that concrete steps are as follows:
(1) spray sugar process: by predrying for the W-Gum raw material hydrochloric acid soln to spraying concentration 1.2% after water content 4%, discharge rate is 6% of dry weight of starch, then be the liquid glucose of 40% to its spray concentration, the fountain height of liquid glucose be dry after starch material weight 30%;
(2) granulation process: by predrying to water content 15% under the condition of 80 DEG C for the W-Gum raw material after spray sugar process in step (1), then being a granulated into granularity by dry granulating machine is 100 object corn starch granules, and is dried to moisture content 3%;
(3) being charred: corn starch granules dried in step (2) adopted dry heated steam to reach the high temperature of 120 DEG C at container external heat, and 300 minutes are processed under this temperature condition, make W-Gum and the reaction of being charred of carbohydrate content, form the being charred powder containing resistant dextrin;
(4) enzymic hydrolysis: by the being charred powder containing resistant dextrin of obtaining after being charred reaction treatment in step (3) in being charred powder: water is that the ratio of 1:3 adds water and is adjusted to emulsus, and add the mesophilicα-diastase that being charred dried bean noodles weighs 0.5%, temperature 75 DEG C, pH value is enzymic hydrolysis 2.5h under the condition of 6; Enzymic hydrolysis completes a laggard step pH to 5.0, then adds the saccharifying enzyme that being charred dried bean noodles weighs 0.3%, saccharification 0.5h under 50 DEG C of conditions;
(5) decolouring, desalting treatment: adopt gac to decolour in advance after go out enzyme and filtration the hydrolyzed solution in step (4) after enzymic hydrolysis and Glucoamylase hydrolysis, activated carbon dosage is 3% of liquid weight, pH is 4.0, temperature 50 C, 1.5 hours time, then, when further employing macroreticular ion exchange resin decolouring and desalination, temperature 20 DEG C, flow is 2 times of column volumes per hour, and the specific conductivity of the liquid after macroreticular ion exchange resin process controls at 45 below μ s/cm.
(6) desugar process: be 40 DEG C in temperature by the hydrolyzed solution after decolouring, desalting treatment in step (5), pH is under the condition of 6, employing molecular retention amount is that the ultra-filtration membrane of 2000Da carries out ultrafiltration, sloughs the glucose of hydrolyzed solution small molecular, maltose and trisaccharide maltose; Again by through molecular retention amount be 2000Da ultra-filtration membrane desugar after hydrolyzed solution, the mode of further employing ultrafiltration is concentrated to dry matter content 45%, then, the ethanol adding concentration 95% in concentrated solution precipitates, ethanol is 3:1 with the weight ratio of hydrolysis concentrated solution, separation resistance dextrin throw out, throw out continues to adopt the ethanol of concentration 80% to clean 3 times in the ratio that throw out weight in wet base and ethanol weight ratio are 1:1; The isolated liquid glucose of desugar is concentrated to the concentration of 40% further, then collects the liquid glucose as spray sugar process in step (1);
(7) the alcohol precipitation thing after desugar process in step (6) is adopted air-flow drying method, be dried to water content less than 6% and make resistant dextrin.
Embodiment two
A working method for resistant dextrin take wheat starch as raw material, it is characterized in that concrete steps are as follows:
(1) spray sugar process: be the Compound-acid solution soaking 30min of 0.05% by Raw Wheat Starch concentration, described Compound-acid solution is formed according to the ratio of weight ratio 5:1 is composite by hydrochloric acid and citric acid, and Compound-acid solution and starch material weight ratio are 3:1; Then adopting the isolated wet starch raw material of the mode of centrifugation, and wet starch raw material is dried to water content 8% under the condition of 90 DEG C, is then the liquid glucose of 50% to its spray concentration, the fountain height of liquid glucose be dry after starch material weight 20%;
(2) granulation process: by the Raw Wheat Starch after spray sugar process in step (1) under the condition of 60 DEG C vacuum-drying to water content 10%, then become granularity to be 80 object wheat starch granules by granulator granulation, and be dried to moisture content 3%;
(3) being charred: adopt periphery Electric heating to make starch material reach the high temperature of 135 DEG C wheat starch granule dried in step (2), and 180 minutes are processed under this temperature condition, make starch and the reaction of being charred of carbohydrate content, form the being charred powder containing resistant dextrin;
(4) enzymic hydrolysis: by the being charred powder containing resistant dextrin of obtaining after being charred reaction treatment in step (3) in being charred powder: water is that the ratio of 1:4 adds water and is adjusted to emulsus, and add the Thermostable α-Amylase that being charred dried bean noodles weighs 0.45%, temperature 90 DEG C, pH value is enzymic hydrolysis 2.0h under the condition of 7; Enzymic hydrolysis completes a laggard step pH to 4.5, then adds the saccharifying enzyme that being charred dried bean noodles weighs 0.35%, saccharification 1.5h under 60 DEG C of conditions;
(5) decolouring, desalting treatment: adopt macroporous resin to decolour after go out enzyme and filtration the hydrolyzed solution in step (4) after enzymic hydrolysis and saccharification, ion exchange resin desalination; During macroporous resin decolouring, its temperature is 35 DEG C, and flow is 3 times of column volumes per hour; When adopting ion exchange resin desalination, its temperature is 25 DEG C, and flow is 1.5 times of column volumes per hour; Ion exchange resin selects storng-acid cation exchange resin and strongly basic anion exchange resin mixing dress post, and Zeo-karb and anionite-exchange resin ratio are 1:1;
(6) desugar process: the hydrolyzed solution after decolouring, desalting treatment in step (5) is concentrated to dry matter content 60%, the ethanol adding concentration 90% precipitates, ethanol is 3:1 with the weight ratio of hydrolysis concentrated solution, separation resistance dextrin throw out again, throw out continue adopt concentration be 75% ethanol clean 4 times in the ratio that throw out weight in wet base and ethanol weight ratio are 1:2; The isolated liquid glucose of desugar is concentrated to the concentration of 50% further, then collects the liquid glucose as spray sugar process in step (1);
(7) by desugar process in step (6), alcohol settling and the resistant dextrin after cleaning are dried to water content 5% and make resistant dextrin.
Embodiment three
A working method for resistant dextrin take Starch rice as raw material, it is characterized in that concrete steps are as follows:
(1) spray sugar process: the Starch rice raw material sulphuric acid soln of concentration 0.05% is soaked 10-90min, sulphuric acid soln and Starch rice raw material weight are than being 2:1, then the wet starch raw material filtered to isolate, adopt the warm air drying of 70 DEG C to water content 6%, then be the liquid glucose of 60% to its spray concentration, the fountain height of liquid glucose be dry after Starch rice raw material weight 30%;
(2) granulation process: by predrying to water content 16% under the condition of 90 DEG C for the Starch rice raw material after spray sugar process in step (1), then become granularity to be 20 object starch granuless by granulator granulation, and be dried to moisture content 5%;
(3) being charred: starch granules dried in step (2) is adopted the outer Electric heating of rotating pipe, be electrically heated to 120 DEG C in advance, then, further employing pipeline type microwave type of heating, feed product heating is reached the high temperature of 160 DEG C, and 60 minutes are processed under this temperature condition, make starch and the reaction of being charred of carbohydrate content, form the being charred powder containing resistant dextrin;
(4) enzymic hydrolysis: by the being charred powder containing resistant dextrin of obtaining after being charred reaction treatment in step (3) in being charred powder: water is that the ratio of 1:3.5 adds water and is adjusted to emulsus, and add the Thermostable α-Amylase that being charred dried bean noodles weighs 0.45%, temperature 95 DEG C, pH value is enzymic hydrolysis 1.5h under the condition of 4; Enzymic hydrolysis completes a laggard step pH to 5.0, then adds the saccharifying enzyme that being charred dried bean noodles weighs 0.15%, saccharification 0.5h under 70 DEG C of conditions;
(5) decolour, desalting treatment: by the hydrolyzed solution in step (4) after enzymic hydrolysis and saccharification through heating the enzyme that goes out, filter, after being concentrated to dry matter content 40%, gac is adopted to decolour in advance, activated carbon dosage is 5% of liquid weight, pH is 6.0, temperature 50 C, 1.5 hours time, macroreticular ion exchange resin desalination is adopted again after filtration, temperature 30 DEG C, flow is 2 times of column volumes per hour, the specific conductivity of the liquid after macroreticular ion exchange resin process controls at 60 below μ s/cm, macroreticular ion exchange resin selects large pores cation exchange resin and macroporous type anionite-exchange resin to fill post respectively,
(6) desugar process: by the hydrolyzed solution after decolouring, desalting treatment in step (5) by ultrafiltration process desugar, temperature is 20 DEG C, pH is under the condition of 6, employing molecular retention amount is that the ultra-filtration membrane of 1000Da carries out ultrafiltration, sloughs the micromolecular sugar such as the glucose of hydrolyzed solution small molecular, maltose; The isolated liquid glucose of desugar is concentrated to the concentration of 60% further, then collects the liquid glucose as spray sugar process in step (1) and step (4);
(7) hydrolyzed solution after desugar process in step (6) concentrated, be dried to water content 5% and make resistant dextrin.
Embodiment four
A working method for resistant dextrin take tapioca (flour) as raw material, it is characterized in that concrete steps are as follows:
(1) spray sugar process: by predrying for the tapioca (flour) raw material hydrochloric acid soln to spraying concentration 0.8% after water content 10%, discharge rate is 12% of dry weight of starch; Under the condition of 90 DEG C, be dried to water content 5%, be then the liquid glucose of 30% to its spray concentration, the fountain height of liquid glucose be dry after starch material weight 30%;
(2) granulation process: by predrying to water content 12% under the condition of 90 DEG C for the starch material after spray sugar process in step (1), then become granularity to be 30 object starch granuless by granulator granulation, and be dried to moisture content 3%;
(3) being charred: high temperature tapioca (flour) heating particles dried in step (2) being reached 160 DEG C, and 160 minutes are processed under this temperature condition, make starch and the reaction of being charred of carbohydrate content, form the being charred powder containing resistant dextrin;
(4) enzymic hydrolysis: by obtain after being charred reaction treatment in step (3) containing the being charred powder of resistant dextrin in being charred powder: water is that the ratio of 1:4 adds water and is adjusted to emulsus, and add the α-amylase that being charred dried bean noodles weighs 0.45%, temperature 85 DEG C, pH value is enzymic hydrolysis 2h under the condition of 6; Enzymic hydrolysis completes a laggard step pH to 5.0, then adds the saccharifying enzyme that being charred dried bean noodles weighs 0.5%, saccharification 2h under 70 DEG C of conditions;
(5) decolour, desalting treatment: adopt gac to decolour in advance the hydrolyzed solution in step (4) after enzymic hydrolysis and saccharification, activated carbon dosage is 1.5% of liquid weight, pH is 5.0, temperature 60 C, 1.5 hours time, carry out macroreticular ion exchange resin after filtration more synchronously to decolour and desalination, temperature 50 C, flow is 1 times of column volume per hour, the specific conductivity of the liquid after macroreticular ion exchange resin process controls at 45 below μ s/cm, macroreticular ion exchange resin selects large pores cation exchange resin and macroporous type anionite-exchange resin to fill post respectively,
(6) desugar process: adopt the mode desugar that ultrafiltration is combined with alcohol precipitation, be 40 DEG C by the hydrolyzed solution after decolouring, desalting treatment in step (5) in temperature, pH is under the condition of 7, employing molecular retention amount is that the ultra-filtration membrane of 1500Da carries out ultrafiltration, sloughs the glucose of hydrolyzed solution small molecular, maltose and trisaccharide maltose; After reaching ultrafiltration desugar requirement, adopt ultra-filtration membrane that hydrolyzed solution is concentrated to dry matter content 40% further; The ethanol adding concentration 95% in concentrated solution precipitates, and ethanol is 4:1 with the weight ratio of hydrolysis concentrated solution, isolates resistant dextrin throw out.The ethanol that throw out continues employing 70% cleans 3 times in the ratio that throw out weight in wet base and ethanol weight ratio are 1:2;
(7) the resistant dextrin wet feed after desugar process in step (6) is dried to water content 5% and makes resistant dextrin product.

Claims (10)

1. a working method for resistant dextrin, is characterized in that concrete steps are as follows:
(1) spray sugar process: take starch as raw material, after with hydrochloric acid soln acid treatment being carried out to it, under the condition of 50-110 DEG C, be dried to water content 3-15%, be then the liquid glucose of 20-60% to its spray concentration, the fountain height of liquid glucose be dry after the 10-60% of starch material weight;
(2) granulation process: by predrying to water content 10-40% under the condition of 50-110 DEG C for the starch material after spray sugar process in step (1), then become granularity to be 120-10 object starch granules by granulator granulation, and be dried to moisture content 3%-16%;
(3) being charred: high temperature starch granules heating dried in step (2) being reached 120-200 DEG C, and 10-300 minute is processed under this temperature condition, make starch and the reaction of being charred of carbohydrate content, form the being charred powder containing resistant dextrin;
(4) enzymic hydrolysis: by obtain after being charred reaction treatment in step (3) containing the being charred powder of resistant dextrin in being charred powder: water is that the ratio of 1:2-5 adds water and is adjusted to emulsus, and add the α-amylase of the heavy 0.01-0.5% of being charred dried bean noodles, at temperature 60-95 DEG C, pH value is enzymic hydrolysis 0.5-2.5h under the condition of 4-7; Enzymic hydrolysis completes a laggard step pH to 4.0-6.0, then adds the saccharifying enzyme of the heavy 0.01-0.5% of being charred dried bean noodles, Glucoamylase hydrolysis 0.25-2.5h under 50-70 DEG C of condition;
(5) decolouring, desalting treatment: adopt macroporous resin to decolour after go out enzyme and filtration the hydrolyzed solution in step (4) after amylase and Glucoamylase hydrolysis, ion exchange resin desalination, or adopt macroreticular ion exchange resin synchronously to decolour and desalination;
(6) desugar process: the hydrolyzed solution after decolouring, desalting treatment in step (5) is passed through ultrafiltration process, or alcohol precipitation, or the mode that ultrafiltration process is combined with alcohol precipitation carries out desugar process, the isolated liquid glucose of desugar is concentrated to the concentration of 20-60% further, then collects the liquid glucose as spray sugar process in step (1);
(7) wet stock after desugar process in step (6) is dry or liquid material is concentrated after be dried to water content less than 6% and make resistant dextrin.
2. the working method of a kind of resistant dextrin according to claim 1, is characterized in that: the starch material in described step (1) is W-Gum, wheat starch, tapioca (flour), Starch rice or yam starch.
3. the working method of a kind of resistant dextrin according to claim 1, it is characterized in that: the acid treatment in described step (1) is that starch material is predrying or sprays the hydrochloric acid soln of concentration 0.1%-2.0% after being adjusted to water content 3-20%, and discharge rate is the 1%-20% of dry weight of starch; Or by centrifugal or filtering separation after the hydrochloric acid soln of starch material concentration 0.01%-1.0% immersion 10-90min, wherein hydrochloric acid soln and starch material weight ratio are 1-5:1; Described acid-treated hydrochloric acid can adopt the one in sulfuric acid, nitric acid, phosphoric acid, oxalic acid, citric acid, lactic acid, tartrate or any two kinds of composite rear replacements, and the weight ratio adopting any two kinds of acid composite is 1-10:1-10.
4. the working method of a kind of resistant dextrin according to claim 1, it is characterized in that: the liquid glucose in the step (1) in the process of spray sugar to adopt when producing resistant dextrin isolated liquid glucose from starch material, and to be concentrated into concentration be 20%-60%.
5. the working method of a kind of resistant dextrin according to claim 1, it is characterized in that: the prilling process in step (2) comprises non-slurry pelletizing, wet method rotating granulation, the granulation of wet method twin screw, fluidized granulating, mist projection granulating, and granulating raw material water content is 10%-40%.
6. the working method of a kind of resistant dextrin according to claim 1, it is characterized in that: in step (3), the type of heating of being charred is electrically heated, or steam heating, or thermal oil mode heats, or microwave heating, or electricity, steam, thermal oil mode and microwave composite heating; Described electrically heated, steam and thermal oil, microwave heating all adopt container or rotating pipe external heating mode, wherein adopt rotating pipe external heating mode to realize continuous seepage; Electricity, steam, thermal oil and microwave composite heating are the mode of arbitrarily both or triplicity in electricity, steam, thermal oil and microwave.
7. the working method of a kind of resistant dextrin according to claim 1, is characterized in that: when adopting macroporous resin decolouring in step (5), its temperature is 20-60 DEG C, and flow is 1-5 per hour times column volume; When adopting macroreticular ion exchange resin decolouring and desalination, its temperature is 20-60 DEG C, flow is 1-6 per hour times column volume, the specific conductivity of the liquid after ion exchange resin treatment controls at 45 below μ S/cm, and ion exchange resin selects Zeo-karb and anionite-exchange resin to fill post or mixing dress post respectively.
8. the working method of a kind of resistant dextrin according to claim 1, it is characterized in that: in step (5), before resin decolorization, adopt gac to decolour in advance, activated carbon dosage is the 0.2%-6% of liquid weight, pH is 4.0-6.0, temperature 20-80 DEG C, time 0.5-3 hour, carries out resin decolorization and desalination after filtration again.
9. the working method of a kind of resistant dextrin according to claim 1, it is characterized in that: ultrafiltration process desugar described in step (6) is 10-50 DEG C by hydrolyzed solution in temperature, pH is under the condition of 3-9, employing molecular retention amount is that the ultra-filtration membrane of 500-2500Da carries out ultrafiltration, sloughs the glucose of hydrolyzed solution small molecular, maltose and trisaccharide maltose; Described alcohol precipitation mode first hydrolyzed solution is concentrated to dry matter content 20%-60%, the ethanol adding concentration 90%-100% precipitates, ethanol is 2-6:1 with concentrated rear hydrolyzed solution weight ratio, separation resistance dextrin throw out again, throw out continues to adopt the ethanol of concentration 60%-95% to clean 1 time in the ratio that throw out weight in wet base and ethanol weight ratio are 1:0.5-3 or repeatedly; The mode that described ultrafiltration is combined with alcohol precipitation is by after hydrolyzed solution ultrafiltration desugar, is concentrated to dry matter content 20%-60%, and then adopts alcohol precipitation and clean to enriched material; Or hydrolysis concentrated solution is first carried out ultrafiltration desugar again after alcohol precipitation process.
10. the working method of a kind of resistant dextrin according to claim 1, is characterized in that: comprise air stream drying, warm air drying, vacuum drying, roller drying, spraying dry in step (1) to the drying means in step (7).
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CN106036805A (en) * 2016-05-27 2016-10-26 朱广双 Preparation method of instant pleurotus eryngii grains
CN105936926A (en) * 2016-05-30 2016-09-14 郑州国食科技有限公司 Preparation method of wheat C starch resistant dextrin
CN106117375A (en) * 2016-08-02 2016-11-16 保龄宝生物股份有限公司 A kind of decolouring impurity-removing method of resistant dextrin
CN106755203A (en) * 2016-11-28 2017-05-31 保龄宝生物股份有限公司 A kind of preparation method of resistant dextrin
CN107432481A (en) * 2017-08-07 2017-12-05 中国大冢制药有限公司 A kind of diet fiber composition and preparation method thereof
CN107674893A (en) * 2017-10-19 2018-02-09 无锡甜丰食品有限公司 A kind of preparation method of resistant maltodextrin
CN109081874A (en) * 2018-10-23 2018-12-25 东莞东美食品有限公司 A kind of preparation method of resistant dextrin
CN111187796A (en) * 2019-01-28 2020-05-22 健隆生物科技股份有限公司 Xanthan gum fermentation medium prepared by using resistant dextrin byproduct and system
CN110862461A (en) * 2019-11-12 2020-03-06 潍坊盛泰药业有限公司 Preparation method of resistant dextrin
CN110862461B (en) * 2019-11-12 2022-02-22 潍坊盛泰药业有限公司 Preparation method of resistant dextrin

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