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Method for extracting and refining phytic acid

An acid extraction and phytic acid 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 low service life, poor regeneration, and high power consumption of ion exchange resins , to achieve the effect of reducing the exchange capacity, reducing the amount of acid and alkali, and prolonging the service life

Inactive Publication Date: 2019-07-02
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high power consumption, low service life and poor reproducibility of ion exchange resins in the above-mentioned phytic acid purification process, the invention provides a method for extracting and refining phytic acid, which comprises the following steps:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: A method for extracting and refining plant acid.

[0026] (1) Raw material pretreatment: take 50g of rice bran meal, grind, and pass through a 50-mesh sieve to obtain rice bran powder;

[0027] (2) Mix the raw material powder and water in a ratio of 1:6 by weight to liquid, and stir evenly;

[0028] (3) Adjust the pH of the material-liquid mixture in step (2) to 3.5, and pre-treat it with heat preservation for 4 hours at a temperature of 50°C;

[0029] (4) Then the plate and frame filter for solid-liquid separation, wash twice, combine the filtrate and the cleaning solution; pass the collected liquid through a 0.01 micron ultrafiltration membrane for ultrafiltration and 0.001 micron nanofiltration membrane for nanofiltration, and collect the permeate ;

[0030] (5) The permeate enters the electrodialysis fresh water chamber, and pure water is added to the concentrated water chamber until the chlorine ion removal rate in the fresh water chamber reaches 95%. The electro...

Embodiment 2

[0032] Example 2: A method for extracting and refining plant acid.

[0033] (1) Raw material pretreatment: take 50g of rice bran meal, grind, and pass through a 50-mesh sieve to obtain rice bran powder;

[0034] (2) Mix rice bran powder and water in a ratio of 1:6 by weight to liquid, and stir evenly;

[0035] (3) Adjust the pH of the material-liquid mixture in step (2) to 3.5, and pre-treat it with heat preservation for 4 hours at a temperature of 50°C;

[0036] (4) Then the plate and frame filter for solid-liquid separation, wash 2 times, combine the filtrate and the cleaning liquid; the collected liquid is passed through a 0.01 micron ultrafiltration membrane for ultrafiltration and a 0.001 micron nanofiltration membrane for nanofiltration, and the permeation is collected liquid;

[0037] (5) The permeate enters the electrodialysis fresh water chamber, and pure water is added to the concentrated water chamber until the chlorine ion removal rate in the fresh water chamber reaches 90%...

Embodiment 3

[0039] Example 3: A method for extracting and refining plant acid.

[0040] (1) Raw material pretreatment: Take 50g of rice bran meal, grind, and pass through a 20-mesh sieve to obtain rice bran powder;

[0041] (2) Mix rice bran powder and water in a ratio of 1:4 by weight to liquid, and stir evenly;

[0042] (3) Adjust the pH of the material-liquid mixture in step (2) to 2, at a temperature of 20° C., pre-heat for 0.5 h;

[0043] (4) Then the plate and frame filter for solid-liquid separation, wash twice, combine the filtrate and the cleaning solution; pass the collected liquid through a 0.01 micron ultrafiltration membrane for ultrafiltration and 0.001 micron nanofiltration membrane for nanofiltration, and collect the permeate ;

[0044] (5) The permeate enters the electrodialysis fresh water chamber, and pure water is added to the concentrated water chamber until the chlorine ion removal rate in the fresh water chamber reaches 95%. The electrodialysis is stopped, and the obtained s...

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PUM

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Abstract

The invention relates to a method for extracting and refining phytic acid, belonging to the technical field of phytic acid extraction. The invention solves the problems in the process of extracting phytic acid in the prior art such as high power consumption, low service life and poor regeneration of ion exchange resin. The invention provides a method for extracting and refining phytic acid, whichcomprises a process flow of crushing of raw materials, liquefaction, acid extraction, filtration, ultrafiltration, nanofiltration, electrodialysis, ion exchange and the like, so as to obtain a refinedphytic acid product finally. The invention is suitable for industrial production of phytic acid.

Description

Technical field [0001] The invention relates to the technical field of phytic acid extraction, in particular to a method for extracting and refining phytic acid. Background technique [0002] Phytic acid, also known as creatine, is mainly found in the seeds, roots and stems of plants, with the highest content in legume seeds, bran and germ of grains. Phytic acid is widely used. For example, phytic acid can be used as an additive for food and feed, a preservative for food and fruits, an antioxidant for oils, and as a metal removal agent in the wine industry; in the pharmaceutical industry, it can be used to treat diabetes, kidney stones and other diseases. It can also be used as anti-rust, cleaning, anti-static and metal surface treatment agent, etc., especially as one of the important raw materials for the production of inositol. [0003] There are many studies on the extraction and purification of phytic acid. The main method is around the process of "acid extraction and alkali ...

Claims

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Application Information

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IPC IPC(8): C07F9/117
CPCC07F9/117
Inventor 王建勋侯同刚咸漠董晴晴
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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