Extraction technology of high-stability odorless purple corn pigment

An extraction process and high stability technology, which is applied in the field of high stability and odorless purple corn pigment extraction process, can solve the problems of low extraction rate, poor quality, and instability of products, and achieve simple production process, high yield, and pigment extraction rate-enhancing effect

Inactive Publication Date: 2015-06-17
QINGDAO PENGYUAN KANGHUA NATURAL PROD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of low product extraction rate, poor quality, odor and instability in the existing

Method used

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  • Extraction technology of high-stability odorless purple corn pigment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Solvent extraction: Soak in citric acid aqueous solution with pH=2.5, set the extraction temperature to 75°C, repeat the extraction three times, each extraction time is 1.5h for corn husks and 2h for corn cobs;

[0023] (2) Ultrasonic treatment: Then place it in an ultrasonic instrument at 45°C, control the conditions at 0°C, ultrasonic power at 100W, ultrasonic frequency at 45KHZ, and ultrasonically treat for 30 minutes;

[0024] (3) Enzyme treatment: add 100u / g medium-temperature amylase, adjust PH=2.5, control temperature at 45°C, and enzymatically treat for 90 minutes;

[0025] (4) Filtration and extraction: filter the above extract under reduced pressure, and extract the filtrate by centrifuging at 2500r / min for 8min;

[0026] (5) Adsorption: put the filtrate on the SP-207 macroporous resin adsorption column, and perform adsorption at a flow rate of 20M3 / h;

[0027] (6) Membrane treatment: use AHP ultrafiltration membrane at 3kg / cm 2 , under the condition of ...

Embodiment 2

[0031] (1) Solvent extraction: Soak in citric acid aqueous solution with pH = 3.0, set the extraction temperature to 80°C, and repeat the extraction three times, each extraction time is 2 hours for corn husks and 3 hours for corn cobs;

[0032] (2) Ultrasonic treatment: Then place it in an ultrasonic instrument at 55°C, control the conditions at 5°C, ultrasonic power 100W, ultrasonic frequency 50KHZ, and ultrasonic treatment for 50 minutes;

[0033] (3) Enzyme treatment: Add 120u / g medium-temperature amylase, adjust PH=3.0, control temperature at 50°C, and enzymatically treat for 120min;

[0034] (4) Filtration and extraction: filter the above extract under reduced pressure, and extract the filtrate by centrifuging at 3500r / min for 12min;

[0035] (5) Adsorption: put the filtrate on the SP-207 macroporous resin adsorption column, and perform adsorption at a flow rate of 60M3 / h;

[0036] (6) Membrane treatment: use AHP ultrafiltration membrane at 3.5kg / cm 2 , under the condit...

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Abstract

The invention relates to an extraction technology of a high-stability odorless purple corn pigment. The extraction technology is characterized by comprising the following steps: (1) solvent extraction; (2) ultrasonic treatment; (3) enzyme treatment; (4) filtration and extraction; (5) adsorption; (6) membrane treatment; (7) reduced pressure concentration; (8) power finished product production. In the provided technology, enzyme species, enzyme content, and parameters are effectively controlled, a solvent extraction method is adopted, the soaking time and pigment impurities are effectively controlled, the production is simple, and the pigment extraction rate is increased. The liquid purple corn extract after the adsorption treatment is subjected to a membrane separation treatment so as to reduce or even eliminate the odor of purple corn. A special porous resin is used in a multi-stage elution technology and is co-used with a mixed oxidizing agent so as to produce the purple corn pigment having the advantages of high color value, high yield, no odor, light resistance, heat resistance, and stability.

Description

technical field [0001] The invention belongs to the technical field of pigment extraction, and in particular relates to a high-stability odorless purple corn pigment extraction process. Background technique [0002] Our country can produce tens of millions of tons of purple corn every year, and millions of tons of purple corn husks can be obtained by peeling, and these husks can produce hundreds of tons of pigments. Increase the added value of purple corn, improve the economic benefits of farmers, and at the same time broaden the product market of the natural pigment industry. The development of this project is of great significance. [0003] At present, this technology in China is still immature, and there is no relevant national standard. However, Japan and the European Union, which are market demand countries, have standards for related products. The market urgently needs industrial production methods that meet domestic use or export and meet relevant standards. [0004...

Claims

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Application Information

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IPC IPC(8): C09B61/00C09B67/54
CPCC09B61/00
Inventor 李进超臧宏豆刘晓波
Owner QINGDAO PENGYUAN KANGHUA NATURAL PROD
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