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Method for extracting anthocyanins from ipomoes batatas by acidic oxidation potential water

A purple sweet potato anthocyanin, oxidation potential water technology, applied in the preparation method of peptide, chemical instrument and method, organic chemistry and other directions, can solve the problem of polysaccharide and protein can not be used, achieve the protection of anthocyanin and product. High rate and the effect of improving product yield

Inactive Publication Date: 2018-10-16
NANOLATTIX BIOTECH CO LTD
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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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: A method for extracting purple sweet potato anthocyanins with acidic oxidation potential water, including cleaning, crushing, beating, filtering, adsorption, elution and concentration processes, respectively extracting purple sweet potato anthocyanins, purple sweet potato starch, protein and mucopolysaccharide products, the specific steps are:

[0028] One, the preparation of purple sweet potato anthocyanin product

[0029] Use acidic oxidation potential water (pH value 2.0-6.0) to put the purple sweet potato into the squirrel cage washing machine for cleaning, and then further clean it in the cleaning tank. 0-4. 5。 Put the cleaned purple sweet potato into the soaking tank for soaking at room temperature, add acidic oxidation potential water, and control the pH value of the soaking solution to 3. 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 t...

Embodiment 2

[0035] Embodiment 2: A method for extracting purple sweet potato anthocyanins with acidic oxidation potential water, including cleaning, crushing, beating, filtering, adsorption, elution and concentration processes, respectively extracting purple sweet potato anthocyanins, purple sweet potato starch, protein And mucopolysaccharide product, specific steps are: the weak acid that adopts is acid oxidation potential water, organic solvent is acetone, macroporous resin adsorption flow rate 1300L / h, acid oxidation potential water washing desorption rate 2500L / h, other processes are the same as example 1.

Embodiment 3

[0036] Embodiment 3: A method for extracting purple sweet potato anthocyanins with acidic oxidation potential water, including cleaning, crushing, beating, filtering, adsorption, elution and concentration processes, respectively extracting purple sweet potato anthocyanins, purple sweet potato starch, protein And mucopolysaccharide products, the specific adsorption and elution steps are: first use acidic oxidation potential water for elution, and then use organic solvent for elution, wherein the organic solvent is acidic oxidation potential water and n-butanol or acetone according to the volume ratio of 10 %-80%: 90%-20%, the macroporous resin adsorption flow rate is 1280L / h, the acid oxidation potential water washing desorption rate is 2300L / h, and other processes are the same as Example 1. When purifying the macroporous resin, acidic oxidation potential water and ethanol are used as eluents, and nanofiltration technology is used to separate ethanol, which can be recycled. The...

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PUM

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Abstract

The invention belongs to the technical field of natural pigment extraction. The purposes of the invention are to extract anthocyanin products from ipomoes batatas by acidic oxidation potential water by adopting an economic, safe and effective problem method aiming at the problem existing in a technology for extracting anthocyanins from the ipomoes batatas and obtain starch, proteins and a mucopolysaccharide product by extraction, so that values added of the ipomoes batatas are improved, and the method for extracting the anthocyanins from the ipomoes batatas by the acidic oxidation potential water is provided for comprehensive utilization of the ipomoes batatas. The method comprises the following steps: cleaning the ipomoes batatas, soaking the artificial acidic oxidation potential water with a pH value of 2.0-4.5, crushing, pulping, separating purple sweet potato residues, naturally precipitating, performing filtration and membrane filtration twice on an upper-layer anthocyanin aqueoussolution, and absorbing, eluting and concentrating a filtrate to obtain the pasty anthocyanins; drying and crushing the pasty anthocyanins to obtain the solid anthocyanin products. The method provided by the invention has the benefits that the consumption of a chemical reagent and the water is reduced, the product yield is improved, the extracted anthocyanins are ensured to be stable in structure, the ipomoes batatas are comprehensively utilized, the values added are improved, and economic, social and environmentally-friendly benefits are good.

Description

technical field [0001] The invention belongs to the technical field of natural pigment extraction, and in particular relates to a method for extracting purple sweet potato anthocyanins with acidic oxidation potential water. 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. [0003] 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 kno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D311/62C07K1/14C07K1/34C08B30/04C08B37/00
CPCC07D311/62C07K1/145C07K1/34C08B30/04C08B37/0003
Inventor 李少平渠志灿梁锐管英英
Owner NANOLATTIX BIOTECH CO LTD
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