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Preparation method of mulberry red pigment

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

Inactive Publication Date: 2016-03-09
CHONGQING SANLINGSAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the traditional method for extracting mulberry red pigment, such as long extraction time, large solvent consumption, low extraction amount, and high cost, thereby providing a new method for extracting mulberry red pigment. Improved the traditional alcohol extraction method, increased the extraction yield of mulberry red pigment without increasing the extraction cost, shortened the extraction time, reduced the amount of solvent used, and laid the foundation for expanding the industrial application value of mulberry red pigment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Take new mulberry, wash it with water, dry it to constant weight, and finally crush it through a 100-mesh sieve to make mulberry powder. Weigh 100 grams of the above-mentioned mulberry powder and set aside.

[0033] 2) Add 95wt% ethanol (mulberry powder: 95wt% ethanol = 1g: 5mL), and adjust the pH value to 2.0 with 0.1 mol / liter citric acid solution, pretreat at room temperature at a high speed of 10000 rpm for 5 minutes, and then Extract homogeneously at 3000 rpm for 30 minutes and then filter.

[0034] 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 / liter citric acid solution, and homogenize at room temperature at 3000 rpm Filter after 30 minutes of extraction.

[0035] 4) Combine the two filtrates, centrifuge at 1000 rpm for 10 minutes at room temperature to remove the precipitate, collect the supernatant and freeze-dry it into powder to obtain the mulberry red...

Embodiment 2

[0038] 1) Take the fresh skin, wash it with water, dry it to constant weight, crush it through a 100-mesh sieve to make mulberry powder, weigh 100 grams of the above-mentioned mulberry powder, and set aside.

[0039] 2) Add 95wt% ethanol (mulberry powder: 95wt% ethanol = 1g: 7mL), and adjust the pH value to 3.0 with 0.1 mol / liter citric acid solution, pretreat at room temperature at a high speed of 10000 rpm for 10 minutes, and then Extract homogeneously at 3000 rpm for 20 minutes and then filter.

[0040] 3) Collect the filtrate, add 95wt% ethanol to the filter residue (filter residue: 95wt% ethanol = 1g: 7mL), and 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.

[0041] 4) The two filtrates were combined, and centrifuged at 1000 rpm for 15 minutes at room temperature to remove the precipitate, and the supernatant was collected and freeze-dried into a powder to obtain the mulbe...

Embodiment 3

[0043] 1) Take new mulberries, wash them with water, dry them to constant weight, crush them through a 100-mesh sieve to make mulberry powder, weigh 100 grams of the above-mentioned mulberry powder, and set aside.

[0044] 2) Add 95wt% ethanol (mulberry powder: 95wt% ethanol = 1g: 10mL), and adjust the pH value to 4.0 with 0.1 mol / liter citric acid solution, pretreat at room temperature at a high speed of 10000 rpm for 10 minutes, and then Extract homogeneously at 3000 rpm for 10 minutes and then filter.

[0045] 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 0.1 mol / L citric acid solution, and extract homogeneously at 3000 rpm at room temperature Filter after 10 minutes.

[0046] 4) The two filtrates were combined, and centrifuged at 1000 rpm for 15 minutes at room temperature to remove the precipitate, and the supernatant was collected and freeze-dried into a powder to obtain t...

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Abstract

The invention discloses a preparation method of a mulberry red pigment. The preparation method comprises the following steps: (1) mixing dried mulberry powder with ethanol (95 wt%), adjusting the pH value of the solution to 2-4 by a critic acid water solution, carrying out high speed pretreatment at a room temperature, homogenizing, extracting, and filtering; (2) after filtering, mixing the dregs with ethanol (95 wt%), adjusting the pH value to 2-4 by a critic acid water solution, homogenizing, extracting, and filtering; (3) subjecting the filtrate to centrifugation, collecting the supernate, and freeze-drying the supernate to obtain powder, namely the mulberry red pigment. The preparation method is simple, the requirements on equipment are low, the extraction efficiency is high, the extraction time is largely shortened, and the provided method is obviously better than the conventional solvent extraction method. Moreover, the obtained mulberry red pigment has the advantages of high water solubility, beautiful appearance and luster, and stable property, and can be used as food additive and raw material of healthcare product.

Description

technical field [0001] The invention belongs to the technical field of extracting natural pigments, and in particular relates to a preparation method of mulberry red pigments. Background technique [0002] In recent years, people have conducted many studies on the chemical composition, pharmacological effects, and active functions of mulberry, and found that mulberry is rich in essential amino acids, vitamins, minerals, flavonoids, alkaloids and other functional components, and has immune function. Promote effect, lower blood sugar, lower blood fat, lower blood pressure, anti-inflammatory, anti-aging, anti-tumor and other effects. The specific manifestations are: anti-oxidation effect, mulberry red pigment has good anti-oxidation effect, and its main component anthocyanin has strong anti-oxidation and elimination of free radicals; it has a protective effect on the liver and can reduce serum proteoliposomes. peroxidation, and has a protective effect on oxidative damage cause...

Claims

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Application Information

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IPC IPC(8): C09B61/00C09B67/54A23L5/43A23L33/105
CPCC09B61/00A23V2002/00C09B67/0096
Inventor 不公告发明人
Owner CHONGQING SANLINGSAN TECH CO LTD
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