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Method for recovering yellow ginger pigment from yellow ginger hydrolysate saponin extraction waste liquid

A technology of saponin and turmeric, which is applied in the field of recycling turmeric, can solve the problems of difficult practical application and high production cost, and achieve the effects of low production cost, improved utilization rate and reduced production cost

Inactive Publication Date: 2014-04-09
SHAANXI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The extraction of the above-mentioned turmeric pigments all uses turmeric as a raw material, which has the disadvantages of high production cost and difficult practical application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Example 1: Take 22g of turmeric hydrolyzate, grind it into a fine powder, roll the filter paper into a cylinder, put it into the fine powder of turmeric hydrolyzate, wrap it well, put it in the reaction chamber of a 500ml Soxhlet extractor, add petroleum ether at a ratio of 1:8 (boiling point 60-90°C), heat and extract continuously in a constant temperature water bath at 88-89°C for 5 hours, take out the filter paper bag, and obtain the extract. Concentrate the extract to 66ml, let it stand and cool to precipitate the saponin crystals, separate the saponin crystals by suction filtration, wash the saponin twice with cold petroleum ether, and drain to obtain crude saponin, collect the crude mother liquor and rinse Washing liquid, that is, saponin crude waste liquid; add 90% alcohol to the obtained saponin crude product in a ratio of 1:40, heat (82°C) to make it fully dissolve, heat filter to remove impurities, collect saponin alcohol solution, and concentrate to 60ml, coo...

example 2

[0018] Example 2: Take 24g of turmeric hydrolyzate, grind it into a fine powder, roll the filter paper into a cylinder, put in the fine powder of turmeric hydrolyzate, wrap it well, put it in the reaction chamber of a 500ml Soxhlet extractor, add petroleum ether at 1:10 (boiling point: 60-90°C), heat and extract continuously in a constant temperature water bath at 88-89°C for 6 hours, take out the filter paper bag, and obtain the extract. Concentrate the extract to 88ml, let it stand and cool to precipitate the saponin crystals, separate the saponin crystals by suction filtration, rinse the saponin twice with cold petroleum ether, and drain to obtain crude saponin, collect the crude mother liquor and rinse The washing liquid is obtained saponin crude waste liquid; add 95% alcohol to the obtained saponin crude product in a ratio of 1:50, heat (82° C.) to make it fully dissolve, heat filter to remove impurities, collect saponin alcohol solution, and Concentrate to 65ml, cool dow...

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PUM

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Abstract

The invention discloses a method for recovering a yellow ginger pigment from a yellow ginger hydrolysate saponin extraction waste liquid, which relates to the field of deep processing of farm products. The method is characterized by comprising the following steps of: collecting a crude saponin waste liquid and a fine waste liquid respectively, concentrating, and removing saponin crystals to obtain a crude yellow ginger pigment; dissolving with alcohol; thermally filtering; concentrating a filtrate; removing saponin crystals; and further concentrating into paste to obtain a yellow ginger pigment product. In the method, the yellow ginger pigment is recovered from the yellow ginger hydrolysate saponin extraction waste liquid, so that the utilization ratio of a yellow ginger resource is increased, the production cost of yellow ginger saponins is lowered, the yield of the saponins is increased, the added value is increased, and environmental pollution is lowered. Compared with a technology of extracting a pigment from yellow ginger, the method has the advantages that: investments and solvents are not required to be increased, the recovery of the pigment is completed in a saponin production process, and the production cost of the yellow ginger pigment is very low.

Description

1. Technical field [0001] In the field of deep processing of agricultural products, specifically, the present invention is a method for recovering turmeric pigment from turmeric hydrolyzate saponin extraction waste liquid. 2. Background technology [0002] Turmeric is the common name of Dioscorea scutellaria, a classic medicinal material containing starch, tannins, alkaloids, pigments, saponins and other ingredients. At present, the deep processing of turmeric at home and abroad mainly focuses on the extraction of turmeric saponin. And in the process of extracting turmeric saponin, a large amount of waste liquid containing turmeric pigment and other organic substances will be produced, which will not only cause environmental pollution, but also cause waste of turmeric resources. Therefore, it is important to develop and research the comprehensive utilization of turmeric waste liquid significance. Using turmeric as a raw material to extract pigments is one of the ways to de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00C09B67/54
Inventor 周建军曹亮张志健刘益红黄俊
Owner SHAANXI UNIV OF TECH