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A kind of decolorizing agent for sugar juice and method for cleaning and decolorizing sugar juice

A technology of decolorizing agent and sugar juice, applied in the direction of using adsorbent purification, etc., can solve problems such as unseen

Active Publication Date: 2019-10-18
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The calcium phosphate used in the prior art is ordinary calcium phosphate, and there is no relevant research report on the recovery of calcium phosphate flocculation sediment from brown sugar redissolving syrup to prepare macroporous calcium phosphate for cleaning and decolorization of sugar juice

Method used

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  • A kind of decolorizing agent for sugar juice and method for cleaning and decolorizing sugar juice
  • A kind of decolorizing agent for sugar juice and method for cleaning and decolorizing sugar juice
  • A kind of decolorizing agent for sugar juice and method for cleaning and decolorizing sugar juice

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Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1: a kind of syrup decolorizing agent, it is prepared by following method:

[0022] (1) Pre-lime the brown sugar back-dissolving syrup (10°Bx) with milk of lime (10°Bé) to pH=6.80, heat the brown sugar re-dissolving syrup to 65°C in a constant temperature magnetic stirrer, and then add phosphoric acid ( 210 mg / kgBx, that is, the content of phosphoric acid in the red granulated sugar redissolving syrup is 210ppm per hammer), adjusted to neutrality with calcium hydroxide, heated to 100°C for the second time after stirring for 5 minutes, and added polyacrylamide (2 mg / kg , that is, add 2 mg of polyacrylamide to 1 kg of brown sugar redissolving syrup) flocculation and sedimentation, after standing for cooling for 30 minutes, recover the flocs to obtain calcium phosphate flocculation sediments;

[0023] (2) Calcium phosphate flocculation sediments were burned at a high temperature of 550°C for 3 hours, and the organic matter wrapped and adsorbed in the flocs was b...

Embodiment 2

[0024] Embodiment 2: A method for cleaning and decolorizing sugar juice, get 6.00 ° Bx red granulated sugar redissolving syrup 100 mL, add the sugar juice decoloring agent macroporous calcium phosphate prepared by 0.2g embodiment 1, then adjust the pH value to 6.0 , reacted for 30 minutes at a temperature of 80°C, and the decolorization rate of macroporous calcium phosphate to sugar juice reached 38.15%.

Embodiment 3

[0025] Embodiment 3: A kind of method for clear decolorization of sugar juice, get the red granulated sugar redissolving syrup 100 mL of 6.00 ° of Bx, add the macroporous calcium phosphate of sugar juice decolorizing agent that 0.2g embodiment 1 prepares, then adjust the pH value to 5.0 , reacted for 30 minutes at a temperature of 80°C, and the decolorization rate of macroporous calcium phosphate to sugar juice reached 37.36%.

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Abstract

The invention relates to a sugar juice decolorizing agent and a method for clearing and decolorizing sugar juice. The preparation method of the sugar juice decolorizing agent comprises: preparing calcium phosphate in brown sugar back-dissolving syrup, and non-sugar substances such as pigment in red sugar back-dissolving syrup Embed it (equivalent to template molecules), and then remove non-sugar substances such as pigments by high-temperature burning to obtain calcium phosphate with a macroporous structure. The large pores run through the entire skeleton, and the specific surface area is 169 m 2 / g, the average pore diameter is 500 nm. The macroporous calcium phosphate was added to the red granulated sugar redissolving syrup as a decolorizing agent for sugar juice. When the dosage was 0.2 g, the reaction time was 30 min, the reaction temperature was 80°C, and the pH value was 6.00, the effect of macroporous calcium phosphate on sugar juice The decolorization rate reaches 38.15%. Compared with calcium phosphate produced in pure water, its decolorization rate increased by 10.1%.

Description

technical field [0001] The invention relates to a sugar juice decolorizing agent and a method for cleaning and decolorizing sugar juice. Background technique [0002] Brown granulated sugar is the final product produced by one-step preparation of white granulated sugar. The thermal degradation products of sucrose produced during the high-temperature cooking process-caramel, Maillard reaction products-melanoidin and fructose alkaline degradation products and other pigments, resulting in red granulated sugar The color value is high, and the accumulation of impurities in the production process makes the content of non-sugar impurities high, therefore, resulting in low market demand and commodity value. Sugar enterprises generally use red granulated sugar to produce white granulated sugar through direct re-dissolution treatment or "interplanting method". However, production practice has found that sulfur bleaching treatment cannot fundamentally solve the problem of high color v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C13B20/12
Inventor 李利军程昊孔红星黄文艺李彦青夏兆博冯淑娟
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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