CN103113477B - Method for preparing starch glue powder from medium-temperature amylase - Google Patents
Method for preparing starch glue powder from medium-temperature amylase Download PDFInfo
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- CN103113477B CN103113477B CN201310065402.5A CN201310065402A CN103113477B CN 103113477 B CN103113477 B CN 103113477B CN 201310065402 A CN201310065402 A CN 201310065402A CN 103113477 B CN103113477 B CN 103113477B
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Abstract
The invention relates to a method for preparing starch glue powder from medium-temperature amylase. The method comprises the following steps of: (1) carrying out starch size mixing: mixing starch serving as a raw material with water to be uniform according to a mass-volume ratio of 1: 1 so as to prepare starch suspension; (2) carrying out enzymolysis reaction: adding alpha-amylase which is 0.1-0.15% of the weight of the starch into the starch suspension prepared in the step (1), continuously stirring, carrying out enzymolysis for 10 minutes at the temperature of 50 DEG C, immediately adding 10M/L NaOH which is 0.05-0.1% of the total volume, and adding anhydrous ethanol which is 40-60% of the total volume, mixing uniformly and then terminating reaction; and (3) after suction filtration, drying, regrinding, and drying at the temperature of 120 DEG C until the alpha-amylase is inactivated, thereby obtaining finished starch glue powder. The starch glue powder is good in fluidity, non-toxic, odorless, moderate in viscosity, good in initial adhesion and self-adjustable in viscosity range and can be widely applied to the carton industry.
Description
Technical field
The present invention relates to a kind of method that middle temperature amylase prepares starch glue powder.
Background technology
Starch Adhesive is current carton industry for one of tackiness agent of the large usage quantity of alternative water glass.Current domestic most amylan tackiness agent is that starch is directly made glue, not only transports inconvenience, and gelatin viscosity stability prolongation in time and being deteriorated, not easily stored for a long time, be suitable only for self-produced personal.In addition, the solids content of Starch Adhesive is lower, cardboard is extended time of drying, thus causes production efficiency to reduce.If working condition controls bad, Starch Adhesive also can be caused to lose efficacy in storage period.Address these problems, need to make starch glue powder, utilize α-amylase that starch long chain molecule is hydrolyzed to short chain molecule, make the viscosity controller of starch make instant dissolving glue powder in certain scope, user can allocate glue as required voluntarily and be applied to carton industry.
α-amylase is a kind of important hydrolyzed starch class zymin, comparatively large in China's output, when it acts on starch, cuts the α-Isosorbide-5-Nitrae glycosidic link of starch molecule inside and make starch generate dextrin, oligose etc. in random mode.Existing enzyme transforming process produces amylan, and the many requirements of temperature of reaction, more than 60 DEG C, are consumed energy higher, and the easy gelatinization of starch with this understanding, starch glue powder cannot be made by suction filtration.
Summary of the invention
A kind of middle temperature amylase is the object of the present invention is to provide to prepare the method for starch glue powder, the amylan rubber powder be prepared into by the method is convenient to transport and is preserved, general liquid starchy tackiness agent can be replaced, and and like product compare, have cost low, apply the characteristics such as convenient and swift, environmental protection.
The present invention is achieved through the following technical solutions above-mentioned purpose: a kind of middle temperature amylase prepares the method for starch glue powder, comprises the steps:
(1) starch is sized mixing: be that starch material mixes with water and makes starch suspension by the ratio of 1:1 in mass volume ratio,
(2) enzyme digestion reaction: the α-amylase adding the 0.1-0.15% of starch weight in the starch suspension that step 1) mixes up, and continual stirring, enzymolysis 10 minutes at the temperature of 50 DEG C, the NaOH of 10M/L is added immediately by the 0.05-0.1% of cumulative volume, add the dehydrated alcohol mixing of cumulative volume 40-60% again, termination reaction.
(3) suction filtration post-drying, again pulverizes again in 120 DEG C of oven dry, until α-amylase deactivation, namely obtains starch glue powder finished product.
Described amylase be can below 60 DEG C the mesophilicα-diastase of the raw tapioca (flour) of enzymolysis.
Described starch is tapioca (flour).
Described middle temperature amylase prepares the application of starch glue powder, is after the suspension described starch glue powder being made into 10-20% by required viscosity, and in 95 DEG C of high temperature gelatinizations, period continual stirring 10 minutes, until gelatinization completely, can use in direct gluing.
The invention has the advantages that:
1, be starch glue powder due to what prepare, steady quality, is easy to transport and storage, easy to use.
2, this finished product composition is simple, and nontoxic, range of viscosities from Row sum-equal matrix, can be widely used in carton industry.
3, less investment, technique is simple, and cost is low.
Embodiment
By the following examples technical scheme of the present invention is described further.
Embodiment 1
Middle temperature amylase of the present invention prepares the method for starch glue powder, comprises the steps:
1, starch is sized mixing: be that starch material mixes with water and makes starch suspension by the ratio of 1:1 in mass volume ratio;
2, enzyme digestion reaction: add α-amylase by the 0.1-0.15% of starch weight in the starch suspension that step 1) mixes up, and continual stirring, enzymolysis 10 minutes at 50 DEG C of temperature, the NaOH of 10M/L is added immediately according to the 0.05-0.1% of cumulative volume, the dehydrated alcohol adding cumulative volume 40-60% again mixes 30 seconds, termination reaction.
Illustrate: add dehydrated alcohol object in this step and be: 1. dehydrated alcohol and NaOH acting in conjunction suppress enzyme digestion reaction; 2. can shorten 50 DEG C of drying times, ensure the stability of starch glue powder, the shortening time reaches more than one times, and the ethanolic soln after using can be recycled again.
3, suction filtration, dries 3-5 hour, again pulverizes and at 120 DEG C, dry 3-4 hour again, until α-amylase deactivation, namely obtain starch glue powder finished product for 50 DEG C.
Embodiment 2
1, starch is sized mixing: be that starch material mixes with water and makes starch suspension by the ratio of 1:1 in mass volume ratio;
2, enzyme digestion reaction: add α-amylase by the 0.1-0.15% of starch weight in the starch suspension that step 1) mixes up, and continual stirring, hydrolysis temperature is dropped to 40 DEG C of enzymolysis 12 minutes, add NaOH and dehydrated alcohol termination reaction according to method in embodiment 1 immediately.
3, suction filtration, dries 3-5 hour, again pulverizes and at 120 DEG C, dry 3-4 hour again, until α-amylase deactivation, namely obtain starch glue powder finished product for 50 DEG C.
Embodiment 3
1, starch is sized mixing: be that starch material mixes with water and makes starch suspension by the ratio of 1:1.5 in mass volume ratio;
2, enzyme digestion reaction: add α-amylase by 0.1% of starch weight in the starch suspension that step 1) mixes up, and continual stirring, at 50 DEG C of temperature, enzymolysis time is adjusted to 8 minutes, adds NaOH and dehydrated alcohol termination reaction according to method in embodiment 1 immediately.
3, suction filtration, dries 3-5 hour, again pulverizes and at 120 DEG C, dry 3-4 hour again, until α-amylase deactivation, namely obtain starch glue powder finished product for 50 DEG C.
The using method of starch glue powder:
After embodiment 1,2,3 gained starch glue powder is made into the suspension of 10%, in 95 DEG C of high temperature gelatinizations, period continual stirring 6-10 minute, until gelatinization completely, can use in direct gluing.
Described starch glue powder finished product is white powder, recording pH value after being made into suspension liquid is 8.5-9.0, under the condition of 50 DEG C, survey amylan range of viscosities after gelatinization is 0.027-0.084PaS, initial bonding strength is detected as 70-100%, this amylan good fluidity, nonpoisonous and tasteless, modest viscosity, initial bonding strength is good, meets carton industry requirement.
Preserve under this starch glue powder finished product normal temperature two days, after recording sample pH and gelatinization, viscosity is still within measurement range, illustrates that this sample stability is good, is easy to long term storage and transport simultaneously.
Claims (2)
1. in, warm amylase prepares a method for starch glue powder, it is characterized in that, the method comprises the steps:
(1) starch is sized mixing: be that starch material mixes with water and makes starch suspension by the ratio of 1:1 in mass volume ratio,
(2) enzyme digestion reaction: the α-amylase adding the 0.1-0.15% of starch weight in the starch suspension that step (1) mixes up, and continual stirring, enzymolysis 10 minutes at the temperature of 50 DEG C, the NaOH of 10M is added immediately by the 0.05-0.1% of cumulative volume, the dehydrated alcohol adding cumulative volume 40-60% again mixes 30 seconds, termination reaction
Described amylase be can below 60 DEG C the mesophilicα-diastase of the raw tapioca (flour) of enzymolysis,
Described starch is tapioca (flour),
(3) 50 DEG C of oven dry 3-5 hour after suction filtration, again pulverize again in 120 DEG C of oven dry, until α-amylase deactivation, namely obtain starch glue powder finished product.
2. middle temperature amylase according to claim 1 prepares the application of starch glue powder, it is characterized in that: described starch glue powder is made into the suspension of 10-20% by required viscosity after, in 95 DEG C of high temperature gelatinizations, period continual stirring 10 minutes, until gelatinization completely, can direct gluing use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310065402.5A CN103113477B (en) | 2013-03-01 | 2013-03-01 | Method for preparing starch glue powder from medium-temperature amylase |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310065402.5A CN103113477B (en) | 2013-03-01 | 2013-03-01 | Method for preparing starch glue powder from medium-temperature amylase |
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| CN103113477A CN103113477A (en) | 2013-05-22 |
| CN103113477B true CN103113477B (en) | 2015-03-11 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6051700A (en) * | 1999-02-11 | 2000-04-18 | Grain Processing Corporation | Process and method for hydroxyalkylation of starch and hydroxyalkyl starch prepared accordingly |
| CN1911966B (en) * | 2006-08-23 | 2010-05-12 | 华南理工大学 | Pretreatment method of starch |
| CN101611838A (en) * | 2008-06-23 | 2009-12-30 | 广东海洋大学 | The method of preparing maltodextrin by enzymolyzing cassava starch |
| CN101509211B (en) * | 2009-03-13 | 2011-05-04 | 东莞市汇美淀粉科技有限公司 | Method of preparing cation coated starch |
| CN101649582A (en) * | 2009-06-23 | 2010-02-17 | 东莞玖龙纸业有限公司 | Method for producing starch glue by low-temperature fast enzymatic conversion |
| CN101979763B (en) * | 2010-10-22 | 2012-05-30 | 东莞理文造纸厂有限公司 | Method for making papermaking starch glue |
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