Purple sweet potato anthocyanin extraction process

A purple sweet potato anthocyanin and extraction technology, which is applied in the field of purple sweet potato anthocyanin extraction technology, can solve the problems of limited processing of purple sweet potato, achieve the effects of ensuring time, increasing extraction rate, and strengthening comprehensive utilization

Inactive Publication Date: 2015-09-23
陈玲华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the application of purple sweet potato is still limited to the field of food processing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of extraction technology of purple sweet potato anthocyanin, this technology comprises the following steps successively:

[0022] (1) Pretreatment: wash the purple sweet potato, dry it in the air, then dry it until the water content is ≤12%, and then crush it to a powder with a fineness of 30-50 mesh to obtain purple sweet potato powder;

[0023] (2) Extraction: with methanol: water: the weight ratio of acetic acid is the mixed solution of 60:10:0.15 as the extractant, and the extractant is added to the container according to the ratio of 1:5 by weight of the extractant and purple sweet potato powder , soaked for 1 hour at 30°C to obtain a crude extract;

[0024] (3) Ultrasonic-assisted extraction: put the container into an ultrasonic wave, extract at a constant temperature water bath temperature of 60° C., and the extraction time is 60 minutes to obtain a mixture;

[0025] (4) Purification: The mixture obtained in step (3) is adsorbed by macroporous resin AB-8;...

Embodiment 2

[0028] A kind of extraction technology of purple sweet potato anthocyanin, this technology comprises the following steps successively:

[0029] (1) Pretreatment: wash the purple sweet potato, dry it in the air, then dry it until the water content is ≤12%, and then crush it to a powder with a fineness of 30-50 mesh to obtain purple sweet potato powder;

[0030] (2) Extraction: with methanol: water: the weight ratio of acetic acid is 80:20:0.18 mixed solution as extractant, according to the ratio of 1:20 by weight ratio of extractant and purple sweet potato powder, extractant is added in the container, Under the condition of 40°C, soak for 2 hours to obtain the crude extract;

[0031] (3) Ultrasonic-assisted extraction: put the container into an ultrasonic wave, extract at a constant temperature water bath temperature of 60° C., and the extraction time is 120 minutes to obtain a mixture;

[0032] (4) Purification: The mixture obtained in step (3) is adsorbed by the macroporous ...

Embodiment 3

[0035] A kind of extraction technology of purple sweet potato anthocyanin, this technology comprises the following steps successively:

[0036] (1) Pretreatment: wash the purple sweet potato, dry it in the air, then dry it until the water content is ≤12%, and then crush it to a powder with a fineness of 30-50 mesh to obtain purple sweet potato powder;

[0037] (2) Extraction: with methanol: water: the weight ratio of acetic acid is 70:15:0.15 mixed solution as extractant, according to the weight ratio of extractant and purple sweet potato powder is 1:8 ratio that extractant is added in the container, Under the condition of 35°C, soak for 1 hour to obtain the crude extract;

[0038] (3) Ultrasonic-assisted extraction: put the container into an ultrasonic wave, extract at a constant temperature water bath temperature of 50° C., and the extraction time is 100 minutes to obtain a mixture;

[0039] (4) Purification: The mixture obtained in step (3) is adsorbed by the macroporous r...

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PUM

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Abstract

The invention discloses a purple sweet potato anthocyanin extraction process and relates to the technical field of plant extraction. The purple sweet potato anthocyanin extraction process comprises the following steps: (1) purple sweet potato pretreatment; (2) extraction: taking a mixed liquor comprising methyl alcohol, water and acetic acid according to the weight ratio of methyl alcohol to water to acetic acid being (60-80): (10-20):(0.15-0.18) as an extractant, adding the extractant and purple sweet potato powder in a container according to the weight ratio of extractant to purple sweet potato powder being 1: (5-20), and soaking the mixture at 30-40 DEG C for 1-2 h to obtain a crude extract; (3) auxiliary extraction through ultrasonic wave; (4) purification: adsorbing the mixture obtained in the step (3) through macroporous resin, eluting the mixture with ethanol after adsorption, collecting the eluent, performing concentration and drying on the eluent at 40-50 DEG C until that the solid content is greater than 10%, and then performing vacuum drying to obtain an anthocyanin finished product.

Description

technical field [0001] The invention relates to the technical field of plant extraction, in particular to an extraction process of purple potato anthocyanins. Background technique [0002] Anthocyanidin, also known as anthocyanin, is a kind of water-soluble natural pigment widely present in plants in nature. It belongs to flavonoid compounds and is also the main coloring substance in plant petals. Anthocyanin is a pure natural anti-aging nutritional supplement. Studies have proved that it is the most effective antioxidant found by humans today. Its antioxidant performance is fifty times higher than vitamin E and twenty times higher than vitamin C. It The bioavailability to the human body is 100%, and it can be detected in the blood 20 minutes after taking it, and can keep the activity in the blood of the human body for 75 hours. Anthocyanins can protect the human body from harmful substances - free radicals, and help prevent a variety of diseases related to free radicals. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D311/62C09B61/00
CPCC07D311/62C09B61/00
Inventor 陈玲华
Owner 陈玲华
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