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Method for extracting and comprehensively utilizing anthocyanidin from Ipomoes batatas

A technology of anthocyanins and purple sweet potatoes, applied in the direction of application, additional food elements, fertilizers made of biological waste, etc., can solve the problem that polysaccharides and proteins cannot be utilized, achieve protection of anthocyanins, good product quality, and reduce losses Effect

Inactive Publication Date: 2012-02-15
广西崇左天赐生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is still a problem in the production of purple sweet potato anthocyanins. High-quality starch has become the raw material for alcohol production, and polysaccharides and proteins cannot be utilized.

Method used

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  • Method for extracting and comprehensively utilizing anthocyanidin from Ipomoes batatas
  • Method for extracting and comprehensively utilizing anthocyanidin from Ipomoes batatas
  • Method for extracting and comprehensively utilizing anthocyanidin from Ipomoes batatas

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The method of extracting anthocyanins and comprehensive utilization of purple sweet potatoes is to extract purple sweet potato anthocyanins, purple sweet potato starch, protein and mucopolysaccharide products:

[0033] One, the preparation of purple sweet potato anthocyanin product

[0034]The purple sweet potatoes are washed in a squirrel cage washing machine, and then further washed in the washing tank. Put the cleaned purple sweet potato into the soaking tank for soaking at room temperature, add weak acid of citric acid, and control the pH value of the soaking solution to 4.0-4.5. Put the soaked purple sweet potato into the screw crusher, add the recovered mother liquor or water to crush at room temperature at the same time, beat it through the beater at room temperature, control the pH value of the beating solution to 4.0-4.5, separate the potato residue for later use, and naturally precipitate the slurry. Take the upper anthocyanin aqueous solution and add it to a...

Embodiment 3

[0043] The weak acid used is acetic acid, the organic solvent is n-butanol and acetone, the macroporous resin adsorption flow rate is 1280L / h, the purified water washing desorption rate is 2300L / h, and other processes are the same as example 1.

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Abstract

The invention discloses a method for extracting and comprehensively utilizing anthocyanidin from Ipomoes batatas. The method comprises the following steps: cleaning the Ipomoes batatas, immersing, fragmenting and mashing the Ipomoes batatas under weak acid and normal temperature conditions, separating batata slag, naturally precipitating, taking an upper layer aqueous solution of anthocyanidin, filtering twice and carrying out membrane filtration, and adsorbing, eluting and concentrating a filtrate to obtain a pasty anthocyanidin product; 2, processing the pasty anthocyanidin product with a routine method to obtain a solid anthocyanidin product; 3, washing precipitated and filtered starch with water, and processing with a routine method to obtain a starch product; 4, carrying out mother solution processing which comprises controlling the pH value of the mother solution at 4.0-4.2 and controlling the pH value of the mother solution at 4.4-4.5 after filtering, sending an upper solution to a fragmentation and mashing operation, carrying out reduced pressure concentration on a lower layer sol, and processing with a routine method to obtain a protein product and a mucopolysaccharide product; and 5, recovering separated water, a separated mother solution or a separated organic solvent, and processing waste residues with a routine method to obtain a forage and a fertilizer. The method of the invention has the advantages of chemical reagent and water consumption reduction, product yield improvement, comprehensive utilization of the Ipomoes batatas, added value improvement, and good social benefit and environmental protection benefit.

Description

technical field [0001] The invention belongs to the technical field of natural pigment extraction, and relates to a method for extracting and comprehensively utilizing anthocyanins from purple sweet potatoes. Background technique [0002] As people have a deeper understanding of the hazards of synthetic pigments and the improvement of their quality of life, consumers are willing to accept returning to nature and advocating natural pigments. Although natural pigments are limited by processing conditions and are more expensive, they are naturally Poisonous, with nutritional and health value, the prospect of natural pigment is promising. Purple sweet potato (Ipomoes batatas), also known as purple heart sweet potato and purple flesh sweet potato, is a plant of the genus Ipomoea. The root of purple sweet potato contains purple sweet potato pigment, starch, protein, mucus and metal elements. Purple sweet potato pigment (Ipomoea batatas (L.) Lam), also known as anthocyanins, is o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D311/62C08B30/00C08B37/00A23K1/14C05F5/00A23K10/30A23K20/10
CPCY02A40/20
Inventor 胡道顺蒋春
Owner 广西崇左天赐生物科技有限公司
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