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Method of discoloring glucose saccharifying liquid by ion exchange resin

A technology of ion exchange resin and ion exchange device, which is applied in the field of decolorization of glucose saccharification liquid by ion exchange resin, which can solve the problems of fast activation failure of powder activated carbon, non-renewable powder activated carbon, and large amount of dust of powder activated carbon, etc., and achieve good selectivity Effects of adsorption, long shelf life, improved purity and quality

Inactive Publication Date: 2009-07-01
SHANDONG XIWANG SUGAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Powdered activated carbon loses its activity quickly, generally about 3-6 months;
[0005] 2. Powdered activated carbon is non-renewable, cannot be reused, and has high cost;
[0006] 3. A large amount of dust is generated during the use of powdered activated carbon, causing environmental pollution;
[0007] 4. After the saccharification liquid passes through the activated carbon, the conductivity will increase, which will affect the quality of the sugar liquid;
[0008] 5. Powdered activated carbon also has a certain adsorption on sugar liquid, and the sugar content in the charcoal residue reaches more than 13%, which affects the yield of finished products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Adopt ion exchange resin decolouring glucose saccharification liquid process of the present invention as follows:

[0039] 1. For pulping, adjust the starch milk to 16Be in the batching tank, add a certain amount of high temperature-resistant α-amylase, stir evenly, and pump it into the jet liquefier;

[0040] 2. Liquefaction, the powder slurry and steam meet in the jet liquefier, the discharge temperature is controlled at 95°C, and the material liquid coming out of the jet enters the laminar flow tank after cooling down for secondary jetting. This time, the sprayed feed liquid and steam are directly mixed, and the temperature rises above 110°C to completely inactivate the α-amylase. Then, the feed liquid is cooled to 80°C by a vacuum cooling system to keep it warm. When the iodine test is qualified, the temperature is lowered to 40°C, and the pH value of the sugar solution is adjusted to 3.5 at the same time;

[0041] 3. For saccharification, add saccharification enzy...

Embodiment 2

[0050] Adopt ion exchange resin decolouring glucose saccharification liquid process of the present invention as follows:

[0051] 1. For pulping, adjust the starch milk to 20Be in the batching tank, add a certain amount of high-temperature-resistant α-amylase, stir evenly, and pump it into the jet liquefier;

[0052] 2. Liquefaction, the powder slurry and steam meet in the jet liquefier, and the discharge temperature is controlled at 110°C. The material liquid coming out of the jet enters the laminar flow tank after cooling down, and performs secondary jetting. This time, the sprayed feed liquid and steam are directly mixed, and the temperature rises above 110°C to completely inactivate the α-amylase. Then, the feed liquid is cooled to 100°C by a vacuum cooling system to keep it warm. When the iodine test is qualified, the temperature is lowered to 65°C, and the pH value of the sugar solution is adjusted to 6.5 at the same time;

[0053] 3. For saccharification, add glucoamylas...

Embodiment 3

[0062] Adopt ion exchange resin decolouring glucose saccharification liquid process of the present invention as follows:

[0063] 1. For pulping, adjust the starch milk to 18Be in the batching tank, add a certain amount of high-temperature-resistant α-amylase, stir evenly, and pump it into the jet liquefier;

[0064] 2. Liquefaction, the powder slurry and steam meet in the jet liquefier, and the discharge temperature is controlled at 107°C. The material liquid coming out of the jet enters the laminar flow tank after being cooled down for secondary jetting. This time, the sprayed feed liquid and steam are directly mixed, and the temperature rises above 110°C to completely inactivate the α-amylase. Then, the feed liquid is cooled to 90°C by a vacuum cooling system to keep it warm. When the iodine test is qualified, the temperature is lowered to 60°C, and the pH value of the sugar solution is adjusted to 4.5 at the same time;

[0065] 3. For saccharification, add glucoamylase an...

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Abstract

The invention discloses a method for decolorizing glucose saccharification liquid by using ion exchange resin. Through the determination of parameters such as temperature, concentration, flow rate, etc., the dry matter is 35-45% glucose saccharification liquid, which passes through the ion exchange device at a temperature of 40-50 °C and a flow rate of 2.5-4.0 BV / h to obtain a decolorized glucose saccharification liquid ; or the glucose saccharification solution after decolorization with a small amount of activated carbon is then passed through an ion exchange device for purification. The light transmittance of the glucose saccharification solution prepared by the method can reach 100%, and the conductance can be reduced to below 10 μs / cm.

Description

technical field [0001] The invention relates to a production method of crystalline glucose, in particular to a method for decolorizing glucose saccharification liquid by using ion exchange resin. Background technique [0002] Glucose is a kind of monosaccharide, which is an important source of energy for humans and animals, and has a wide range of uses in the food industry and pharmaceutical industry. The color of glucose is a very important sensory index of glucose products. Choosing an economical and very effective decolorization method has always been a concern of many manufacturers. Glucose is produced through jet liquefaction at high temperatures, during which some pigments are produced. Its pigment is the product of the reaction of sugar and colored substance precursors. For example, melanoids are produced by the interaction of sugar and amino acids (Maillard reaction), and another type of pigment is produced by the thermal degradation of sugar (such as caramel). So...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C13K1/10C13K1/00
Inventor 王勇李伟阿纳斯孙宗宝崔立平许萍杨会敏何玉梅
Owner SHANDONG XIWANG SUGAR
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