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Extraction technology of Photinia fraseri haematochrome

An extraction process, red pigment 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 Short, efficient extraction effect

Inactive Publication Date: 2017-06-27
周跃贵
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  • 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 shortcomings of the traditional method for extracting Photinia red pigment, such as long extraction time, large solvent consumption, low extraction amount, and high cost, thereby providing a new method for extracting Photinia red pigment. The method improves the traditional alcohol extraction method, increases the extraction yield of Photinia red pigment without increasing the extraction cost, shortens the extraction time, reduces the amount of solvent used, and lays a foundation for expanding the industrial application value of Photinia red pigment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Take the new Photinia fragrans, wash it with water, dry it to constant weight, and finally crush it through a 100-mesh sieve to make Photinia frondosa powder. Weigh 100 grams of the above-mentioned Photinia frondosa powder and set aside.

[0032] 2) Add 95wt% ethanol (Photinia fruticosa powder: 95wt% ethanol = 1g: 5mL), and adjust the pH value to 2.0 with 0.1 mol / L citric acid solution, pretreat at room temperature at 10,000 rpm for 5 minutes at high speed, Then extract homogeneously at 3000 rpm for 30 minutes and then filter.

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

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

Embodiment 2

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

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

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

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

Embodiment 3

[0041] 1) Take new Photinia fragrans, wash with water, dry to constant weight, crush and pass through a 100-mesh sieve to make Photinia frondosa powder, weigh 100 grams of the above-mentioned Photinia frondosa powder, and set aside.

[0042] 2) Add 95wt% ethanol (Photinia fruticosa powder: 95wt% ethanol = 1g: 10mL), and adjust the pH value to 4.0 with 0.1 mol / L citric acid solution, pretreat at room temperature at 10,000 rpm for 10 minutes at high speed, Then extract homogeneously at 3000 rpm for 10 minutes and then filter.

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

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

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Abstract

The invention discloses a process for extracting the red pigment of Photinia fragrans: (1) mixing dry Photinia fragrans powder with 95wt% ethanol, adjusting the pH value to 2-4 with citric acid aqueous solution, pretreating at room temperature at high speed, and homogenizing Extract and filter; (2) mix the filtered filter residue with 95wt% ethanol, adjust the pH value to 2-4 with citric acid aqueous solution, extract homogeneously again, and filter; (3) centrifuge the filtrate, collect the supernatant, and freeze The red pigment of Photinia fragrans can be obtained by drying into powder; the extraction process of the present invention is simple, has low requirements on production equipment, high extraction efficiency, greatly shortens the extraction time, and is obviously superior to the traditional solvent extraction method. The obtained heather red pigment has good water solubility, good appearance and color, and stable properties, and is suitable as a food additive and a health food raw material.

Description

technical field [0001] The invention belongs to the technical field of extracting natural pigments, and in particular relates to a process for extracting red pigments of Photinia fruticosa. Background technique [0002] Peanut is one of the main oil crops in the world. Photinia frondosa 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% to 42% cellulose, 10% to 14% fat, 11% to 18% protein and 8% to 21% ash. It also contains about 7% tannins and various pigments. It has the effect of stopping bleeding, dispersing stasis, and reducing swelling. It is the main drug for treating anemia and hemorrhagic disease. It also has the effects of nourishing the kidney and stomach, nourishing the lungs and relieving cough, nourishing the middle and replenishing qi, clearing the intestines and detoxifying. 50 times, in the "Compendium of Materia Medica" and "C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00
CPCC09B61/00
Inventor 周跃贵
Owner 周跃贵
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