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Production method for preparing high-purity calcium phytate by utilizing membrane technology

A production method, calcium phytate technology, applied in chemical instruments and methods, compounds of group 5/15 elements of the periodic table, organic chemistry, etc., can solve the problems of backward technology, low quality, high cost, etc., and achieve low energy consumption, Simple operation and the effect of reducing production energy consumption

Inactive Publication Date: 2013-08-14
HEFEI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although dozens of phytic acid production plants have been built in our country, due to the backward technology, the pollution caused in the production process is large, the cost is high, the quality is low, and the production yield is only below 8% of the raw materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Acid leaching: defatted rice bran is crushed and passed through a 40-mesh sieve, weighing 2kg, adding water at a ratio of 1:10, adjusting the pH to 3.0 with 0.2mol / L hydrochloric acid, heating to 40°C, keeping constant temperature and stirring continuously, maintaining 2.5 h;

[0017] (2) Frame plate filtration: After cooling the pickling liquid, squeeze and filter with frame plate filter cloth, first filter twice with 100 mesh filter cloth, then filter twice with 200 mesh filter cloth, collect the filtrate, and wash the filter residue 3 times , combined filtrate;

[0018] (3) Ultrafiltration: Use JY-SUF60 membrane equipment for ultrafiltration separation of the combined filtrate, select a 500A° pore size ultrafiltration membrane, and separate the combined filtrate through the ultrafiltration membrane under the pressure of 0.2MPa; add in time during the membrane separation process Carry out dialysis with appropriate amount of water to increase the amount of permeat...

Embodiment 2

[0023] (1) Acid leaching: defatted rice bran is crushed and passed through a 40-mesh sieve, weighing 2kg, adding water at a ratio of 1:10, adjusting the pH to 3.0 with 0.2mol / L hydrochloric acid, heating to 40°C, keeping constant temperature and stirring continuously, maintaining 2.5 h;

[0024] (2) Frame plate filtration: After cooling the pickling liquid, squeeze and filter with frame plate filter cloth, first filter twice with 100 mesh filter cloth, then filter twice with 200 mesh filter cloth, collect the filtrate, and wash the filter residue 2 times , combined filtrates;

[0025] (3) Ultrafiltration: Use JY-SUF60 membrane equipment for ultrafiltration separation of the combined filtrate, select a 1000A° pore size ultrafiltration membrane, and separate the combined filtrate through the ultrafiltration membrane under the pressure of 0.3MPa; add in time during the membrane separation process Appropriate amount of water was used for dialysis to increase the amount of permeat...

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Abstract

The invention relates to a production method for preparing high-purity calcium phytate by utilizing a membrane technology. The production method comprises the following concrete operating steps of: (1) smashing degreased rice bran and carrying out acid leaching; (2) filtering by utilizing a frame plate to obtain merged filtrate; (3) carrying out ultrafitration, and collecting membrane transmission fluid and trapped fluid; (4) adding saturated lime water and a sodium hydroxide solution for neutralization, and collecting two precipitated fluids; (5) carrying out microfiltration, and collecting the trapped fluid to obtain two liquid calcium phytates; and (6) drying to obtain two solid calcium phytates, wherein purity of solid calcium phytate obtained by the membrane transmission fluid is more than 82%, the purity of solid calcium phytate obtained by the trapped fluid is more than 69%, and yield calculated by degreased rice bran raw material is 12.5%. According to the production method, the traditional calcium phytate extraction process is combined with the membrane separation technology, and the characteristics of no phase change, low energy consumption, no damage on biological activity and easy operation of a membrane are utilized, so that the purity of the product is improved, a decolorization link in the original process is removed, production energy consumption is reduced, operation is easy, and industrialized production can be facilitated.

Description

technical field [0001] The invention belongs to the technical field of deep processing of agricultural by-products, and in particular relates to a production method of calcium phytate. Background technique [0002] Calcium phytate is the calcium salt of phytic acid (phytic acid IP6, phytic acid), which is widely distributed in plants and is the main component of plant seeds. It can protect seeds from oxidation and loss during storage. Cereal seed coats (such as rice bran) and beans are higher. Calcium phytate is an important chemical raw material, which has important applications in daily chemical industry, pharmaceutical industry, food industry, etc. For example, when used in the food industry for the cultivation of wine yeast, replacing potassium phosphate can increase the ethanol component of yeast proliferation and make the taste more mellow; in the oil industry, it can be used to refine high-purity vegetable edible oil to improve the refining rate; in the printing and ...

Claims

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Application Information

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IPC IPC(8): C07F9/117
Inventor 范远景徐茂锋荣煜朱义强张瑞刘桂京曹迪黄婷
Owner HEFEI UNIV OF TECH
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