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Method for delaying quality deterioration in raw sugar storage process

A technology for sugar storage and raw sugar, which is applied in the field of delaying the quality deterioration in the process of raw sugar storage, can solve problems such as the decline of raw sugar quality, the increase of color value, the decrease of sugar content, etc., so as to delay the rise and delay of the conversion rate of raw sugar. The increase of color value, the effect of improving the quality of raw sugar

Active Publication Date: 2019-05-21
COFCO GROUP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the storage of raw sugar, due to different external environmental factors and its own quality, it will undergo different degrees of deterioration, such as increased moisture content, lower pH value, lower sugar content, higher color value, etc. Even high-quality raw sugar During the storage process, the color value will still double, and the sucrose will be transformed. This series of changes will lead to a decline in the quality of raw sugar, which will have a great impact on the production load, sucrose recovery rate, processing cost and quality of refined sugar in the subsequent processing and preparation of refined sugar. big impact

Method used

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  • Method for delaying quality deterioration in raw sugar storage process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Weigh 2Kg of raw sugar with a pH of 6.0 and place it in a stirring tank, add 0.4g of calcium oxide solid in the stirring tank, stir evenly, take part of the raw sugar to measure its raw sugar pH value, the result is 8.0, its water content 0.3% by weight.

[0042] The raw sugar and the raw sugar added with calcium oxide were stored in a constant temperature and humidity box (40°C, 70% RH), and the raw sugar quality (raw sugar color value, raw sugar conversion rate), the measurement results of raw sugar and the quality change of raw sugar mixed with calcium oxide storage are shown in Table 1.

[0043] Table 1

[0044] storage time / week

[0045] From the results shown in Table 1, it can be seen that the quality of raw sugar and calcium oxide-raw sugar has changed during the storage period. After 6 weeks, the color value of raw sugar increased by 29%, and the color value of calcium oxide-raw sugar only increased by 6%. , the color value increased by 23% after addi...

Embodiment 2

[0047] Such as figure 1 As shown, the raw sugar that takes the pH of 2Kg to be 6.0 is placed in the drying cavity of fluidized bed 1, and calcium hydroxide aqueous solution is passed in the fluidized bed cavity by liquid feed pipe 2, and its concentration is 0.14% by weight, usually The input volume is 400mL, the flow rate is 2.0mL / min, the air pressure in the feed pipe 1 is 2bar, the peristaltic pump sprays the calcium hydroxide aqueous solution on the raw sugar through the nozzle 4, and the fluidized bed cavity system is in a closed state during spraying state. The working parameters of the fluidized bed are as follows: the air flotation air pressure of the air feed pipe 3 passed through the gas feed pipe 3 is 4bar, and the flow rate of the air fed into it is 80m 3 / h, the temperature in the fluidized bed cavity is 45°C, and the raw sugar material is kept tumbling continuously in the fluidized bed glass drying cavity. After the calcium hydroxide aqueous solution is fed, cl...

Embodiment 3

[0052] The raw sugar on the line is transported to the drum drying stage through a conveyor belt at a flow rate of 30t / h, and a peristaltic pump is used to spray an aqueous solution of calcium hydroxide (0.16% by weight) on the raw sugar through a feed nozzle. The working parameters of the drum drying are as follows: the drum drying temperature is 40°C, the drum drying time is 10 min, the flow rate of the calcium hydroxide aqueous solution is 1.8 mL / min, the feed air pressure is 3 bar, and the raw sugar material is continuously tumbling in the drying chamber. The mass ratio of the volume of calcium hydroxide aqueous solution pumped into the drum dryer to the raw sugar is 5:1. After the calcium hydroxide aqueous solution was fed, the feed pump and the feed air valve were closed, and the pH value of the dried raw sugar was measured to be 7.5, and the water content thereof was 0.4% by weight.

[0053] The raw sugar and the raw sugar sprayed with calcium hydroxide aqueous solution...

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Abstract

The invention relates to the technical field of food processing, and discloses a method for delaying quality deterioration in a raw sugar storage process. The method for delaying the quality deterioration in the raw sugar storage process comprises a step of adding a metal oxide and / or a metal hydroxide into raw sugar to make the pH value of the mixed raw sugar to be 6.8 to 8.5, wherein the metal is a metal element from Group IA or Group IIA. The method provided by the invention can adjust the pH value of the raw sugar simply and conveniently, and can significantly delay the quality deterioration in the raw sugar storage process without adding a procedure.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a method for delaying the quality deterioration of raw sugar during storage. Background technique [0002] There are two main process routes for existing sugar production: one-step sugar production and raw sugar-refining two-step sugar production. The one-step sugar production method is to directly produce white sugar from sugarcane or sugar beet. This method is mainly used for the production of ordinary white granulated sugar, while the preparation of low-cost and high-quality refined sugar requires a two-step sugar production method. Raw sugar-refining In the first step of the two-step sugar production method, sugarcane is used as raw material to make raw sugar through pressing, clarification, filtration and crystallization, and then the raw sugar is made into white sugar and Refined sugar. The two-step sugar production process has less pollution and low cost, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13B50/00
Inventor 耿勤车夏宁吴子毅王宝赵抒娜陈海军张菡
Owner COFCO GROUP
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