CN101565762B - Production process for starch sugar - Google Patents

Abstract

The invention discloses a starch sugar production process, which comprises steps of rice pulverizing, liquifying, deslagging, saccharifying, decoloring, ion exchanging, concentrating, packing or the like. According to the invention, a high temperature high pressure spraying method is applied to a regulated starch milk charged with high temperature resistant a-amylase, so that a hollow cylindrical thin-film is formed by the starch milk under high temperature high pressure condition in the ejector, Van der Waals force between starch molecule is broken, which is beneficial for biochemical action of high temperature resistant a-amylase, the a-1,4 glycosidic bond of starch chain is rapidly cut. The problem of starch milk thorough hydrolysis is solved; temperature of liquefier is lowered to the physico-chemical temperature through two times of flash evaporation, concentration of sugar liquor is enhanced from 33% to 37%, and a large amount of steam is saved for the concentration step; by the improvement of the one-time deslagging and the one-time slag washing, not only 10% of sugar content is recovered from the sugar slag for enhancement of yield, but also protein content in the sugar slag is enhanced for earning increasing; by adopting counter current carbon discharging decoloring process, not only process requirement is ensured, but also the carbon cost is saved.

Description

A kind of production process for starch sugar

Technical field

The invention belongs to a kind of food production process, specifically is a kind of production method of Dian Fentang.

Background technology

China's rice processing industry, a large amount of the cracking rice of annual generation, these parts of cracking rice are as feed, partly as Nulomoline, as with these raw material processing and utilizations, can be enterprises engaged in processing agricultural products increases a considerable income, is processed into the carbohydrate product simultaneously, can satisfy the demands of consumers again.

With regard to present domestic Dian Fentang manufacturing enterprise, its technological line has acid system, enzyme process, acid-enzyme hydrolysis method, double-enzyme method, five kinds of methods of solid phase isomery enzyme process.No matter be to take which kind of technology, its core content all is the hydrolytic process of starch.There are three kinds of principal reactions in the starch hydrolytic process: the one, be hydrolyzed to glucose; The 2nd, be combined into compounding sugars such as isomaltose again after being hydrolyzed into glucose; The 3rd, breakdown of glucose generates 5-hydrocarbon methyl alditol and coloring matter.In concrete production technique, the degree of amylolytic speed, hydrolysis, liquefaction, saccharification, purification, crystallization, starch material, catalytic efficiency and processing unit performance etc. all can influence the quality of starch liquid sugar.Starch kind difference, its molecular structure are also different, also have different influences, the length of liquefying time directly to have influence on the performance and the production cycle of production capacity to liquefaction.

Summary of the invention

The purpose of this invention is to provide a kind of production process for starch sugar, break domestic comparatively traditional production method at present, add necessary sophisticated equipment in process of production, appropriate change processing parameter in technical process has advantages such as technology controlling and process is stable, comprehensive consumption is few, quality product is high, production cost is low, environmental protection pressure is little.

Technical scheme of the present invention is as follows:

A kind of production process for starch sugar is characterized in that carrying out successively following steps:

(1) soaks, grinds rice: after raw material is cracked rice and soak certain hour in water, remove impurity, grind into starch milk, adding clear water or slag washing water adjustment concentration is 33%, regulating the starch milk pH value by edible soda ash simultaneously is 5.9-6.0, to guarantee to liquefy effect stability and produce that postorder is working properly to be carried out;

(2) once liquefaction: the starch milk after the allotment of mill rice is pressed the heavy amount of 6-8U/ grammeter and is added efficient high-temperature resistant a-amylase, stir, after eight to ten minutes, with steam starch milk being heated to 108-110 ℃ liquefies and is ejected into the pressurize jar, the pressurize pressure tank is controlled to be 0.2-0.4MPa, temperature control is 108-110 ℃ in jar, material stops after 5-7 minute in the pressurize jar, enter flash system and cool to 95-97 ℃, then, enter the laminar flow jar again, temperature is 95-97 ℃ in the laminar flow jar, the residence time is 80-110 minute, finishes once liquefaction;

(3) secondary liquefaction: after once liquefaction is finished, in the liquefier also residual have do not have the starch of complete hydrolysis macrobead molecule on a small quantity, also need in liquefier, to add once more the heavy efficient high-temperature resistant a-amylase of 3-4U/ grammeter this moment, with the steam heating liquefier to temperature 120-130 ℃, liquefier is once more by the pressurize jar then, the pressurize pressure tank is controlled to be 0.3-0.5MPa, temperature control is 120-130 ℃ in jar, liquefier stops after 5-7 minute in the pressurize jar, enter flash system and cool to 90-95 ℃, the starch macrobead has also obtained thorough hydrolysis like this, and final starch milk is converted into and contains dextrin, maltose, the liquefier of trisaccharide and a small amount of glucose;

(4) take off slag: liquefier is handled by filter press, sugared slag is separated with liquid glucose; The pH value of filtrate is adjusted to 4.5-4.8, the filtrate temperature is reduced to 58-60 ℃ by cooling system; Sugared slag is added water stir, pass through the washery slag filtering system then, can thoroughly reclaim the sugar in the sugared slag on the one hand, to improve yield; Carry the protein content in the high pulp on the other hand;

(5) saccharification: the liquefier through taking off the slag operation enters the saccharification operation, the sugared concentration of liquefier has reached 35-37%, amount according to 2-4U/g liquefier butt is added fungal amylase, fungal amylase is under pH value 4.5-4.8, temperature 55-60 ℃ condition, through 8-16 hour saccharification react, produce malt syrup that contains 50%-60% and the glucose syrup that contains 3%-5%;

(6) decolouring:, remove the organic impurity in the liquid glucose by twice adsorption bleaching;

(7) ion-exchange: liquid glucose passes through weak base anion-exchange resin and storng-acid cation exchange resin successively, carries out purifying;

(8) concentrate: vacuum concentration is to the syrup solid substance, and concentration is about 75%;

(9) finished product packing.

Described decolouring adopts fresh gac as sorbent material.

The present invention adopts twice high pressure spraying to adding the diastatic starch milk of a-, and under the high temperature more than 100 ℃, a-amylase plays biochemical action, the a-1 of incision starch chain, 4 glycosidic links.After pH value is transferred to OK range, the enzyme that adds total consumption 2/3, a spray temperature is raised to rapidly and generates the aqueous solution that mixes the back carbohydrate after 110 ℃, adds the enzyme of 1/3 amount again, after two spray temperature rose to 125 ℃ rapidly, the carbohydrate molecule in the hydrating solution had obtained thorough decomposition.At bleaching workshop section, secondary decolourization adds fresh gac, brings into play the powerful decolorizing ability of new charcoal and removes the small amount of impurities in the destainer one time, and once decolouring adds secondary decolourization exhausted gac and adsorbs impurity a large amount of in the sugar, thereby saves the charcoal amount of using.In ion-exchange workshop section, when the ion exchange resin exchange capacity descends, utilize hydrochloric acid and caustic soda that Zeo-karb and anionite-exchange resin are regenerated, the production cycle shortens relatively greatly, has reduced production cost.

By this process modification, solved the difficult problem that starch milk is difficult to thorough hydrolysis; When liquefier being dropped to the physics and chemistry temperature, also sugar concentration is brought up to 37% from 33%, also saved a large amount of steam for enrichment process by twice flash distillation; By once taking off the improvement of a washery slag technology of slag, not only can reclaim in the sugared slag 10% sugar, improved yield, can also carry the protein content in the high pulp, additional income; Adopt adverse current to walk twice decoloring method of charcoal, can guarantee technic index, can economize on charcoal cost etc. again.

Production technique of the present invention reaches following six technical indicators and characteristics:

1, twice enzyme-added, twice injection, twice flash distillation liquefaction not only with the thorough hydrolysis of starch, can also bring up to 37% to liquefier concentration;

2, once take off slag, a washery slag, not only can improve yield, can also improve the protein content of byproduct;

3, adverse current is walked charcoal, twice decolouring, and ton sugar is reduced to 3.5kg with the charcoal amount by original 5kg;

4, recycling-guard ion exchange process can be realized the automatic preparation of acid-base solution, and the production cycle was reduced to 48 hours by original 72 hours;

5, quadruple effect falling liquid film vacuum concentration, steam consumption, water loss are low;

6, suitable adjusting process route and processing condition can be produced different Dian Fentang (Liquid Glucose, liquid dextrin, beer syrup, oligomeric isomaltose), for example add saccharifying enzyme and can produce glucose syrup in the saccharification operation; In the saccharification operation, add the β composite alpha-amylase and can produce beer syrup; Can produce fructose etc. after the preface of handing over, adding one group of isomery post.

Embodiment

A kind of production process for starch sugar is characterized in that carrying out successively following steps:

(1) soaks, grinds rice: after raw material is cracked rice and soak certain hour in water, remove impurity, grind into starch milk, adding clear water or slag washing water adjustment concentration is 33%, regulating the starch milk pH value by edible soda ash simultaneously is 5.9-6.0, to guarantee to liquefy effect stability and produce that postorder is working properly to be carried out;

(2) once liquefaction: the starch milk after the allotment of mill rice is pressed the heavy amount of 6-8U/ grammeter and is added efficient high-temperature resistant a-amylase, stir, after eight to ten minutes, with steam starch milk being heated to 108-110 ℃ liquefies and is ejected into the pressurize jar, the pressurize pressure tank is controlled to be 0.2-0.4MPa, temperature control is 108-110 ℃ in jar, material stops after 5-7 minute in the pressurize jar, enter flash system and cool to 95-97 ℃, then, enter the laminar flow jar again, temperature is 95-97 ℃ in the laminar flow jar, the residence time is 80-110 minute, finishes once liquefaction;

(3) secondary liquefaction: after once liquefaction is finished, in the liquefier also residual have do not have the starch of complete hydrolysis macrobead molecule on a small quantity, also need in liquefier, to add once more the heavy efficient high-temperature resistant a-amylase of 3-4U/ grammeter this moment, with the steam heating liquefier to temperature 120-130 ℃, liquefier is once more by the pressurize jar then, the pressurize pressure tank is controlled to be 0.3-0.5MPa, temperature control is 120-130 ℃ in jar, liquefier stops after 5-7 minute in the pressurize jar, enter flash system and cool to 90-95 ℃, the starch macrobead has also obtained thorough hydrolysis like this, and final starch milk is converted into and contains dextrin, maltose, the liquefier of trisaccharide and a small amount of glucose;

(4) take off slag: liquefier is handled by filter press, sugared slag is separated with liquid glucose; The pH value of filtrate is adjusted to 4.5-4.8, the filtrate temperature is reduced to 58-60 ℃ by cooling system; Sugared slag is added water stir, pass through the washery slag filtering system then, can thoroughly reclaim the sugar in the sugared slag on the one hand, to improve yield; Carry the protein content in the high pulp on the other hand;

(5) saccharification: the liquefier through taking off the slag operation enters the saccharification operation, the sugared concentration of liquefier has reached 35-37%, amount according to 2-4U/g liquefier butt is added fungal amylase, fungal amylase is under pH value 4.5-4.8, temperature 55-60 ℃ condition, through 8-16 hour saccharification react, produce malt syrup that contains 50%-60% and the glucose syrup that contains 3%-5%;

(6) decolouring:, remove the organic impurity in the liquid glucose by twice adsorption bleaching;

(7) ion-exchange: liquid glucose passes through weak base anion-exchange resin and storng-acid cation exchange resin successively, carries out purifying; Utilize the adsorption of resin, remove water-soluble inorganic impurity.Zwitterion and the H+ on the anion-cation exchange resin, OH-in the liquid glucose exchange, and H+, OH-in the last and liquid glucose are combined into water, and inorganic impurity generates corresponding water and is removed.

(8) concentrate: vacuum concentration is to the syrup solid substance, and concentration is about 75%; Finished product packing.

Claims (2)

1. production process for starch sugar is characterized in that carrying out successively following steps:

(1) soaks, grinds rice: after raw material is cracked rice and soak certain hour in water, remove impurity, grind into starch milk, adding clear water adjustment concentration is 33%, regulating the starch milk pH value by edible soda ash simultaneously is 5.9-6.0, to guarantee to liquefy effect stability and produce that postorder is working properly to be carried out;

(2) once liquefaction: the starch milk after the allotment of mill rice is pressed the heavy amount of 6-8U/ grammeter and is added efficient high-temperature resistant a-amylase, stir, after eight to ten minutes, with steam starch milk being heated to 108-110 ℃ liquefies and is ejected into the pressurize jar, the pressurize pressure tank is controlled to be 0.2-0.4MPa, temperature control is 108-110 ℃ in jar, material stops after 5-7 minute in the pressurize jar, enter flash system and cool to 95-97 ℃, then, enter the laminar flow jar again, temperature is 95-97 ℃ in the laminar flow jar, the residence time is 80-110 minute, finishes once liquefaction;

(3) secondary liquefaction: after once liquefaction is finished, in the liquefier also residual have do not have the starch of complete hydrolysis macrobead molecule on a small quantity, also need in liquefier, to add once more the heavy efficient high-temperature resistant a-amylase of 3-4U/ grammeter this moment, with the steam heating liquefier to temperature 120-130 ℃, liquefier is once more by the pressurize jar then, the pressurize pressure tank is controlled to be 0.3-0.5MPa, temperature control is 120-130 ℃ in jar, liquefier stops after 5-7 minute in the pressurize jar, enter flash system and cool to 90-95 ℃, the starch macrobead has also obtained thorough hydrolysis like this, and final starch milk is converted into and contains dextrin, maltose, the liquefier of trisaccharide and a small amount of glucose;

(4) take off slag: liquefier is handled by filter press, sugared slag is separated with liquid glucose; The pH value of filtrate is adjusted to 4.5-4.8, the filtrate temperature is reduced to 58-60 ℃ by cooling system; Sugared slag is added water stir, pass through the washery slag filtering system then, can thoroughly reclaim the sugar in the sugared slag on the one hand, to improve yield; Carry the protein content in the high pulp on the other hand;

(5) saccharification: the liquefier through taking off the slag operation enters the saccharification operation, the sugared concentration of liquefier has reached 35-37%, amount according to 2-4U/g liquefier butt is added fungal amylase, fungal amylase is under pH value 4.5-4.8, temperature 55-60 ℃ condition, through 8-16 hour saccharification react, produce malt syrup that contains 50%-60% and the glucose syrup that contains 3%-5%;

(6) decolouring:, remove the organic impurity in the liquid glucose by twice adsorption bleaching;

(7) ion-exchange: liquid glucose passes through weak base anion-exchange resin and storng-acid cation exchange resin successively, carries out purifying;

(8) concentrate: vacuum concentration to the syrup solid concentration about 75%;

(9) finished product packing.

2. production process for starch sugar according to claim 1 is characterized in that described decolouring adopts fresh gac as sorbent material.