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Efficient purple potato pigment extraction method

A purple potato pigment and extraction method technology, applied in food extraction, chemical instruments and methods, food ingredients as colors, etc., can solve problems such as inconspicuous stability

Inactive Publication Date: 2019-09-10
AILEX TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the stability of red pigments contained in other five plants such as purple grape, perilla, black rice, purple plum and black beans, purple potato pigment has similar thermal stability to black rice, but better than other pigments; photostability The strongest; the stability to metal ions and food additives is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0056]In a preferred example of the present invention, a method for preparing purple sweet potato pulp is provided, and parameters of the preparation method for purple sweet potato pulp are optimized. Representatively, in the step (1), the purple sweet potato pulp is prepared by the following method, including the steps of: mixing the purple sweet potato with the extract and beating to obtain the purple sweet potato pulp, wherein the extract is an aqueous citric acid solution or Acidify the ethanol solution.

[0057] In another preferred example, the extract is an aqueous citric acid solution with a mass percentage of 0.5-1.0% or an acidified ethanol solution with a volume fraction of 10-40%.

[0058] In another preferred example, the acidifying agent in the acidified ethanol solution is selected from the group consisting of tartaric acid, malic acid, citric acid, or combinations thereof.

[0059] The extracting solution not only improves the extraction rate of the purple swe...

Embodiment 1

[0089] Take fresh, insect-free and non-rotten purple sweet potatoes, clean them, peel them and cut them into 3-5mm thin slices, add 0.6% citric acid aqueous solution according to the mass ratio of solid to liquid for beating, and obtain purple sweet potato pulp;

[0090] Add pectinase (the weight ratio of pectinase and purple sweet potato pulp is 0.02:5, and the enzyme activity of pectinase is 1.5×10 4 U / g), mixed with purple sweet potato pulp evenly, using citric acid aqueous solution to adjust the pH of the solution to 3.5, and then performing enzymolysis at a temperature of 55° C. for 3.0 hours to obtain the first enzymolysis solution;

[0091] Then, add cellulase (the weight ratio of cellulase and purple sweet potato pulp is 0.03:5, and the enzyme activity of cellulase is 2.4×10 5 U / g), mixed uniformly, adjusted the pH of the solution to 4.8 with citric acid, and then performed enzymolysis at a temperature of 55° C. for 3.0 hours to obtain a second enzymolysis solution;

...

Embodiment 2

[0095] Take fresh, insect-free and non-rotten purple sweet potatoes, clean them, peel them and cut them into 3-5mm thin slices, add tartaric acid acidified ethanol solution with a volume fraction of 25% (the mass percentage of tartaric acid is 0.6%) according to the mass ratio of solid to liquid: 1:1.5 Beat the pulp to get purple sweet potato pulp;

[0096] Add pectinase (the weight ratio of pectinase and purple sweet potato pulp is 0.02:5, and the enzyme activity of pectinase is 1.5×10 4 U / g), mixed uniformly with purple sweet potato pulp, adjusted the pH of the solution to 3.5 with citric acid solution, and then carried out enzymolysis at a temperature of 58° C. for 3.0 hours to obtain the first enzymolysis solution;

[0097] Then, add cellulase (the weight ratio of cellulase to purple sweet potato pulp is 0.03:5, and the enzyme activity of cellulase is 2.4×10 5 U / g), mixed uniformly, adjusted the pH of the solution to 4.8 with citric acid, and then performed enzymolysis at...

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PUM

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Abstract

The invention relates to an efficient purple potato pigment extraction method. Specifically, the purple sweet potato pigment extraction method comprises the steps of performing enzymolysis treatment on purple sweet potato pulp by using pectinase and cellulase, extracting the purple sweet potato pigment in the enzymolysis solution by using ultrasonic technology, purifying the obtained purple sweetpotato pigment, and the like. The invention combines biological enzyme technology and ultrasonic extraction technology, and has the advantages of simple extraction process, high efficiency, short extraction time, high product recovery rate, no toxicity, convenience for large-scale industrial production and obvious economic benefits.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular, the invention relates to an efficient method for extracting purple sweet potato pigment. Background technique [0002] Purple sweet potato is spindle-shaped, with purple skin and flesh. It has excellent taste and high nutritional content, and is a good material for developing health food and extracting plant pigments. Studies have shown that purple sweet potato contains a variety of biologically active substances such as organic selenium and pigments, which have the effects of anti-cancer, lowering blood pressure, calcium supplementation, preventing arteriosclerosis, nourishing blood and beautifying skin, benefiting the heart and moistening the lungs. In recent years, purple sweet potato has been widely concerned by international and domestic markets, and has broad development prospects, especially for the extraction and application of anthocyanins. [0003] Purple potato...

Claims

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Application Information

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IPC IPC(8): C09B61/00C09B67/54
CPCA23V2002/00A23L5/43C09B61/00C09B67/0096A23V2200/04A23V2300/14
Inventor 李子樵孙娱张晓翠任亚哲
Owner AILEX TECH GRP CO LTD
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