Cationic saccharification liquid decolorizing method

A technology of saccharification liquid and cation, which is applied in the field of cationic saccharification liquid decolorization, can solve the problems of the pigment adsorption capacity to be improved and the porosity is not high, and achieve the effect of fast adsorption speed, high product quality and stable performance

Inactive Publication Date: 2017-06-16
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the porosity of the anionic resin is not high, and the adsorption capacity of the pigment needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A cationic saccharification liquid decolorization method, the specific steps are:

[0016] Concentrate the saccharification solution at low temperature in vacuum, and pre-decolorize the obtained concentrated solution with activated carbon whose mass is 0.1-0.5% of the dry basis of the saccharification solution. The adsorption diameter-height ratio is 8-9, and the flow rate of the saccharification solution is 1.3-1.7mL / min, the temperature is 15~25°C, the pH is 5.0~6.0, and then anion exchange resin is used for decolorization. pH is in the neutral range. Using the above method to decolorize the cationic saccharification liquid, the amount of activated carbon is greatly reduced, and the cost is reduced; the anion exchange resin has a high adsorption rate for the pigment, and the adsorption speed is fast; the light transmittance of the saccharification liquid after decolorization reaches 100%, and the product quality of the saccharification liquid is high. Good; the anio...

Embodiment 2

[0022] A method for decolorizing cationic saccharified liquid, the most preferred steps are:

[0023]Concentrate the saccharified liquid at low temperature in vacuum, and pre-decolorize the obtained concentrated liquid with activated carbon whose mass is 0.3% of the dry basis of the saccharified liquid. ℃, pH 5.3, and then use anion exchange resin for decolorization, the aspect ratio is 5, the flow rate of the saccharification solution is 1.8mL / min, the temperature is 20 ℃, and the pH is 7. Using the above method to decolorize the cationic saccharification liquid, the amount of activated carbon is greatly reduced, and the cost is reduced; the anion exchange resin has a high adsorption rate for the pigment, and the adsorption speed is fast; the light transmittance of the saccharification liquid after decolorization reaches 100%, and the product quality of the saccharification liquid is high. Good; the anion exchange resin used has high reusability, good uniformity, stable perfo...

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PUM

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Abstract

The invention provides a cationic saccharification liquid decolorizing method. The method comprises the following steps: carrying out vacuum low-temperature concentration on a saccharification liquid, carrying put pre-decolorizing treatment by using active carbon, and decolorizing the treated liquid by using anion exchange resin. The anion resin is prepared through a polymerization reaction, a chlorination reaction and an amination reaction. The method has the following advantages: the use amount of active carbon is greatly reduced, so the cost is reduced; the anion exchange resin has a high pigment adsorption rate, so the adsorption speed is fast; the light transmittance of the decolorized saccharification liquid reaches 100%, and the saccharification liquid product has high quality; and the anion exchange resin has high reuse rate, good uniformity, stable performances, green and environmentally-friendly property and high economic benefit.

Description

technical field [0001] The invention relates to the technical field of decolorization of saccharification liquid, in particular to a cationic saccharification liquid decolorization method. Background technique [0002] Saccharification liquid is widely used in the food and pharmaceutical industries, and the color of the saccharification liquid is a very important sensory indicator of the product. Therefore, choosing an economical and very effective decolorization reagent is a matter of great concern to manufacturers. The production of saccharification liquid needs to be liquefied by high-temperature jetting, and some pigments will be produced during the production process. One type of pigment is the product of the reaction between sugar and colored substance precursors, and the other type of pigment is produced by the thermal degradation of sugar. Some colored substances are produced under alkaline conditions and have amphiphilic properties, which are both hydrophilic and hy...

Claims

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Application Information

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IPC IPC(8): C13B20/12C13B20/14B01J41/14C08F8/32C08F8/24C08F212/08C08F212/36
CPCB01J41/14C08F8/24C08F8/32C13B20/123C13B20/146C08F212/08C08F212/36
Inventor 杨金生潘玉英
Owner ZHEJIANG OCEAN UNIV
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