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Method for separating and extracting ipomoes batatas L. anthocyanidins

A purple sweet potato anthocyanin and extraction method technology, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of affecting mass transfer and separation effect, complex extract components, and massive leaching of starch, etc., and achieve industrialization. The prospect is feasible, the extraction rate is reachable, and the product quality is high.

Inactive Publication Date: 2010-06-16
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for purple sweet potato, which is a starch-rich anthocyanin raw material, improper operating conditions may cause a large amount of starch leaching or even gelatinization during the ultrasonic process, which will affect the subsequent mass transfer and separation effects. Selecting Appropriate Sonication Conditions
[0009] In the refining method of anthocyanins, due to the complex components in the extract, the currently reported membrane separation methods such as nanofiltration and reverse osmosis have low operability in large-scale production. Macroporous adsorption resin separation is currently a more feasible natural product separation. Methods, especially in the separation and purification process of flavonoids, are widely used, but for anthocyanins, a compound with an ionic structure, how to choose an appropriate resin type and operating conditions with better selective adsorption characteristics is a separation task. key

Method used

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  • Method for separating and extracting ipomoes batatas L. anthocyanidins
  • Method for separating and extracting ipomoes batatas L. anthocyanidins
  • Method for separating and extracting ipomoes batatas L. anthocyanidins

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Fresh purple sweet potato raw material (Jiangsu Yancheng Haipengzi Lvyuan Food Co., Ltd., Z110), wash off the dirt, dust and other dirt attached to the surface with water, drain the water, and crush it with a beater.

[0052] The pulverized purple sweet potato pulp is put into the acidic ethanol aqueous solution, and ultrasonic assisted extraction is used. Ultrasound assisted extraction condition is: acidic ethanol aqueous solution is the ethanol aqueous solution of pH2.0 (regulating with HCl), 20% (v / v), purple sweet potato weight (kg): acidic ethanol aqueous solution volume (L)=1: 20, ultrasonic The power is 400W, the temperature is controlled at 50°C, and the number of ultrasonic extractions is 2 times, that is, the acidic ethanol aqueous solution is extracted twice, and the ultrasonic extraction time is 30 minutes each time.

[0053] The above extracts were combined and filtered, then concentrated under reduced pressure to remove ethanol, the vacuum degree was 0.085...

Embodiment 2

[0056] Fresh purple sweet potato raw material (Yancheng Haipengzi Lvyuan Food Co., Ltd., Z110), wash off the dirt, dust and other dirt attached to the surface with water, drain the water, and crush it with a beater.

[0057] The pulverized purple sweet potato pulp is put into the acidic ethanol aqueous solution, and ultrasonic assisted extraction is used. Ultrasound assisted extraction condition is: acidic ethanol aqueous solution is the ethanol aqueous solution of pH1.0 (regulating with HCl), 40% (v / v), purple sweet potato weight (kg): acidic ethanol aqueous solution volume (L)=1: 15, ultrasonic The power is 100W, the temperature is controlled at 60°C, and the number of ultrasonic extractions is 3 times, that is, the acidic ethanol aqueous solution is extracted in 3 times, and the ultrasonic extraction time is 60 minutes each time.

[0058] The above extracts are combined and filtered, and then concentrated under reduced pressure to remove ethanol. The vacuum degree is 0.09MP...

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Abstract

The invention discloses a method for separating and extracting ipomoes batatas L. anthocyanidins, which comprises the following steps: cleaning, pulping and crushing the fresh ipomoes batatas L.; then, putting the crushed ipomoes batatas L. pulp into aqueous solution of acid ethanol, and extracting the solution with the aid of ultrasonic wave; filtering, compressing and concentrating the extract,adsorbing the extract by adopting NKA, washing the impurities by water, and eluting the extract by the aqueous solution of acid ethanol; and concentrating and drying the elution to obtain an ipomoes batatas L. anthocyanidins product. The method of the invention is characterized in that: ultrasonic wave-aid extraction and NKA separation and purification are adopted so as to ensure the efficient extraction of the anthocyanidins in the ipomoes batatas L. and ideal separation and purification effects and lay a foundation for the utilization and industrialized development of the ipomoes batatas L.resource.

Description

technical field [0001] The invention belongs to a method for extracting functional active ingredients, and in particular relates to a method for obtaining anthocyanins by separating and extracting from purple sweet potatoes. Background technique [0002] Purple sweet potato (Ipomoes batatas L.) is an annual or biennial herbaceous vine of the genus Ipomoes of Convolvulaceae, with purple-red fleshy roots. Originally produced in the southern part of kyushu, Japan, it was improved into a new variety rich in pigment by the Japanese Mr. Yamakawa and popularized for planting. my country introduced this variety around 1988. Because it contains anthocyanins, it has anti-oxidation, improves liver function, inhibits mutation of genetic factors, prevents high blood pressure, improves eyesight and other health effects, and is easy to promote and plant on a large scale. Planting reports have been reported from Shandong to Jiangxi and Fujian, and it has broad market prospects. [0003] An...

Claims

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Application Information

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IPC IPC(8): C09B61/00C09B67/54
CPCC09B61/00C09B67/0096A23L1/2751A23L5/43
Inventor 孙芸孙梦茹姚忠张春银熊晓辉陆利霞
Owner NANJING UNIV OF TECH
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