Extraction process of peanut-skin red pigment

An extraction process, peanut technology, applied in the direction of azo dyes, organic dyes, chemical instruments and methods, etc., can solve the problems of long extraction time, large solvent consumption, low extraction volume, etc., and achieve uniform extraction effect and short extraction time , High extraction efficiency

Inactive Publication Date: 2015-11-18
CHONGQING DOUHAO BIOTECH
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the traditional method for extracting peanut red pigment, such as long extraction time, large solvent consumption, low extraction amount, and high cost, thereby providing a new extraction method for peanut red pigm

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] 1) Take the new peanut coat, wash it with water, and dry it to a constant weight, and finally crush it through a 100-mesh sieve to make the peanut coat powder. Weigh 100 grams of the peanut coat powder for use.

[0032] 2) Add 95wt% ethanol (peanut coat powder: 95wt% ethanol = 1g: 5mL), and adjust the pH to 2.0 with a 0.1 mol / L citric acid solution, and pretreat it at high speed at 10,000 rpm for 5 minutes at room temperature, Then, it was homogenized and extracted at 3000 rpm for 30 minutes and then filtered.

[0033] 3) Collect the filtrate, add 95wt% ethanol to the filter residue (filter residue: 95wt% ethanol = 1g: 5mL), and adjust the pH to 2.0 with a 0.1 mol / L citric acid solution, and homogenize at 3000 revolutions / min at room temperature Filter after 30 minutes of extraction.

[0034] 4) Combine the two filtrates, centrifuge at 1000 rpm for 10 minutes at room temperature, remove the precipitation, collect the supernatant and freeze-dry it into a powd...

Example Embodiment

[0035] Example 2

[0036] 1) Take the fresh skin, wash it with water, and dry it to a constant weight, crush it through a 100-mesh sieve to make peanut coat powder, weigh 100 grams of the peanut coat powder, and set aside.

[0037] 2) Add 95wt% ethanol (peanut coat powder: 95wt% ethanol = 1g: 7mL), adjust the pH to 3.0 with 0.1 mol / L citric acid solution, and pretreat at high speed at 10,000 rpm for 10 minutes at room temperature, Then homogenized extraction at 3000 rpm for 20 minutes and then filtered.

[0038] 3) Collect the filtrate, add 95wt% ethanol to the filter residue (filter residue: 95wt% ethanol = 1g: 7mL), and adjust the pH to 3.0 with 0.1 mol / L citric acid solution, and homogenize extraction at 3000 rpm at room temperature Filter after 20 minutes.

[0039] 4) Combine the two filtrates, centrifuge at 1000 rpm for 15 minutes at room temperature, remove the precipitation, collect the supernatant and freeze-dry it into a powder, then 14.3 grams of peanut coat red pigment is ...

Example Embodiment

[0040] Example 3

[0041] 1) Take a new peanut coat, wash it with water, and dry it to a constant weight, crush it through a 100-mesh sieve to make peanut coat powder, weigh 100 grams of the peanut coat powder, and set aside.

[0042] 2) Add 95wt% ethanol (peanut coat powder: 95wt% ethanol = 1g: 10mL), and adjust the pH to 4.0 with a 0.1 mol / L citric acid solution, and pretreat at high speed at 10,000 rpm for 10 minutes at room temperature, Then homogenized extraction at 3000 rpm for 10 minutes and then filtered.

[0043] 3) Collect the filtrate, add 95wt% ethanol to the filter residue (filter residue: 95wt% ethanol = 1g: 10mL), and adjust the pH value to 4.0 with a 0.1 mol / L citric acid solution, and homogenize extraction at 3000 rpm at room temperature Filter after 10 minutes.

[0044] 4) Combine the two filtrates, centrifuge at 1000 rpm for 15 minutes at room temperature, remove the precipitation, collect the supernatant and freeze-dry it into a powder, and obtain 14.6 g of peanut...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention discloses an extraction process of peanut-skin red pigment. The extraction process comprises: (1) mixing dried peanut-skin power with 95 wt % of ethanol to obtain a mixture; using a citric acid aqueous solution to adjust the pH value of the mixture to 2-4; and at room temperature, performing high-speed pre-treatment on the mixture; and performing homogenization, extraction and filtration on the pre-treated mixture; (2) mixing filter residues filtered in step (1) with 95 wt % of ethanol to obtain a mixed solution; using a citric acid aqueous solution to adjust pH of the mixed solution to 2-4; and performing homogenization, extraction and filtration on the mixed solution; and and (3) centrifuging filtrate obtained in step (2); collecting a supernatant liquid; and freezing and drying the collected liquid into powder, thereby obtaining the peanut-skin red pigment. The extraction process of peanut-skin red pigment provided by the present invention is simple, has low requirements on production equipment, and has high extraction efficiency; and the extraction time is greatly reduced, so that the extraction process is obviously superior to a conventional solvent extraction method. The obtained peanut-skin red pigment is good in water-solubility, good in appearance and color, stable in property and shape, and is suitable for being used as a raw material for food additives and healthcare food.

Description

technical field [0001] The invention belongs to the technical field of extracting natural pigments, and in particular relates to a process for extracting peanut red pigments. Background technique [0002] Peanut is one of the main oil crops in the world. The skin of peanut is the seed coat of peanut, which is the seed coat of leguminous plant peanut. It is reddish brown, membranous, sweet, slightly bitter and flat in nature. Its main components are 37%-42% cellulose, 10%-14% fat, 11%-18% protein and 8%-21% ash, and also contain about 7% tannins and various pigments. The effect of stopping bleeding, dispersing stasis, and reducing swelling is the main drug for treating anemia and hemorrhagic disease. It also has the effects of nourishing the kidney and stomach, moistening the lungs and relieving cough, nourishing the middle and replenishing qi, and clearing the intestines to detoxify. The effect of peanut clothing is stronger than that of peanuts itself. 50 times, in the "Co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09B61/00
CPCC09B61/00
Inventor 邓焱飞宁发子
Owner CHONGQING DOUHAO BIOTECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap