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Method for extracting purple corn pigment

An extraction method, purple corn technology, applied in the direction of chemical instruments and methods, sustainable manufacturing/processing, azo dyes, etc., can solve the problems that there is no national standard for products, and no mass production process has been seen, so as to improve the purity, High purity, energy saving and environmental protection in production mode

Inactive Publication Date: 2011-11-02
HUAIBEI PUHAO BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, this technology in China is still in the stage of laboratory research, and there is no mass production process, and there is no national standard for related products. However, Japan and the European Union, the market demand countries, have relevant product standards, and the market urgently needs to meet domestic use. Or export and meet the relevant standards of industrial production methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A method for extracting purple corn pigment, the steps are as follows: 1. Remove the moldy and moth-eaten parts of the purple corn cobs as raw materials, wash and dry them in the air, and the water content is required to be less than 14%, and the raw materials after screening are broken into particles of about 3 mm 2. Get 1Kg of the raw material after the above-mentioned screening and crushing, use 10L of citric acid water of PH=3.8 to leach the raw material particles, the ratio of the batching liquid is 1: 10 (g / ml), the extraction temperature is set at 45°C, and the extraction After 2 hours, the extract was obtained, and the extract was extracted 4 times according to the concentration gradient; 3. The extract was filtered with an 80-mesh double filter to remove large particles of impurities, and the filtrate was cooled by a plate heat exchanger. The temperature is lowered to 10°C; 4. Stir and mix the cooled filtrate with diatomaceous earth evenly, put it into a smear f...

Embodiment 2

[0014] A method for extracting purple corn pigment, the steps of which are as follows: 1. Remove mildew and moth-eaten parts from raw purple corn seed coats, plants, and bract leaves, wash and dry, and require water content of less than 14%, and filter the purple corn. The raw material is crushed to about 3mm particles; 2. Take 1Kg of the above-mentioned screened and crushed raw material, use 10L of citric acid water with pH=4.0 to soak the raw material particles, the ratio of the batching liquid is 1:10, and the temperature is set at 50°C to extract 2 hour, the extract was obtained, and the extract was extracted 4 times according to the concentration gradient cover; three, the extract was filtered using a 100-mesh double filter to remove large particles of impurities, and the filtrate was cooled by using a plate heat exchanger to lower the temperature of the filtrate. to 8°C; 4. Stir and mix the cooled filtrate with diatomaceous earth evenly, put it into a smear filter to filt...

Embodiment 3

[0017] A method for extracting purple corn pigment, the steps are as follows: 1. Remove the moldy and moth-eaten parts of the raw material black waxy corn, wash and dry, and the moisture content is required to be less than 14%; 2. Take 1Kg of the raw material after the screening Use 10L of citric acid water with pH = 3.8 to soak the raw material particles, the ratio of the batching solution is 1:10, the temperature is set at 55°C, and the extraction is obtained for 2 hours to obtain the extract, which is extracted 4 times according to the concentration gradient; three. 1. Filter the extract with a 120-mesh duplex filter to remove large particles of impurities, and use a plate heat exchanger to cool the filtrate to lower the temperature of the filtrate to 7°C; 4. Mix the cooled filtrate with diatomaceous earth evenly , put into the smear filter and filter, remove the colloidal substance, and obtain the filtrate; five, use the filtrate obtained in the fourth step to circulate and...

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Abstract

The invention relates to a method for extracting purple corn pigment. The purple corn pigment according with the conventional international standards is extracted by eleven steps, namely sorting and crushing, extraction with acid water, rough filtration and cooling, filtration of kieselguhr, filtration with a ceramic composite membrane, adsorption and desorption, concentration with a nano-filtration membrane, evaporation concentration, separation, spray drying, and obtaining of a finished product; the raw materials and the extraction equipment used in the extraction method are conventional materials and equipment, so the method is suitable for large-batch production; the extracted purple corn pigment has unique physiological functions of resisting oxidation, softening blood vessels, preventing and killing colon cancer cells and the like, and can be applied in the fields of food, health-care products and medicine; and the production mode is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to a method for extracting purple corn pigment, which belongs to the technical field of separation and extraction of biological products. Background technique [0002] Purple corn pigment is a natural pigment obtained by separation and extraction from black waxy corn or purple corn cobs, seed coats, plants, bracts, etc. In addition to the physiological functions of purple corn pigment, it also has unique physiological functions such as anti-oxidation, softening blood vessels, preventing and killing colon cancer cells; purple corn pigment is mainly used in the fields of food, health products and medicine; especially in Japan and South Korea at super high prices The acquisition of purple corn pigment is used in the field of medicine, and the demand is huge. [0003] At present, this technology in China is still in the stage of laboratory research, and there is no mass production process, and there is no national standard for relate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00
CPCY02P20/10
Inventor 宫坤仇刚
Owner HUAIBEI PUHAO BIOLOGICAL TECH
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