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Method for extracting tannin, polysaccharides and chestnut shell pigments from chestnut shells

A technology of chestnut shell pigment and chestnut shell, which is applied in the field of extracting tannin, polysaccharide and chestnut shell pigment, can solve the problems of excessive heavy metals in the extract, low extraction efficiency and high cost, and achieves good product color, high extraction efficiency, stay active

Inactive Publication Date: 2017-09-19
镇雄滇龙生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method can only extract one of tannin, polysaccharide or chestnut shell pigment alone, and has the defects of low extraction efficiency, poor purity or high cost
At the same time, heavy metals are easily enriched in the chestnut shell, so the extract is also prone to excessive heavy metals

Method used

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  • Method for extracting tannin, polysaccharides and chestnut shell pigments from chestnut shells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Tannins, polysaccharides and chestnut shell pigments were extracted from chestnut shells as follows:

[0041] 1. Material selection: select fresh chestnut shells peeled off by a peeling machine without mold, and remove moldy materials.

[0042] 2. Drying: After the raw materials are selected, dry the chestnut shells with 95°C hot air, and then store them properly.

[0043] 3. Extraction: Put 10 kg of chestnut shells crushed to 80 mesh into an extraction tank, add 80 L of sodium hydroxide solution with a pH value of 12.8, extract for 2 hours, and filter to obtain the first extraction solution. According to the ratio of mass volume ratio 1:8, the filtered chestnut shell filter residue and the sodium hydroxide solution with a pH value of 12.8 are put into the extraction tank, leached for 2 hours, filtered to obtain the second leaching solution, and combined twice Extraction solution.

[0044] 4. Coarse filtration: the extract is filtered with a 300-mesh bag filter to rem...

Embodiment 2

[0051] With reference to the method described in Example 1, tannins, polysaccharides and chestnut shell pigments are extracted, the difference is only that the extraction is carried out in the following manner:

[0052] Put 10 kg of chestnut shells crushed to 80 mesh into an extraction tank, add 100 L of sodium hydroxide solution with a pH value of 13.2, extract for 2 hours, and filter to obtain the first extract. According to the ratio of mass volume ratio 1:10, put the filtered chestnut shell filter residue and the sodium hydroxide solution with a pH value of 13.2 into the extraction tank, leaching for 2 hours, and filtering to obtain the second extraction solution, which was combined twice Extraction solution.

Embodiment 3

[0054] With reference to the method described in Example 1, tannins, polysaccharides and chestnut shell pigments are extracted, the difference is only that the extraction is carried out in the following manner:

[0055] Put 10 kg of chestnut shells crushed to 80 mesh into an extraction tank, add 120 L of sodium hydroxide solution with a pH value of 13.5, extract for 2 hours, and filter to obtain the first extract. According to the ratio of mass volume ratio of 1:12, put the filtered chestnut shell filter residue and the sodium hydroxide solution with a pH value of 13.5 into the extraction tank, extract for 2 hours, and filter to obtain the second extraction solution, which is combined twice Extraction solution.

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Abstract

The invention provides a method for extracting tannin, polysaccharides and chestnut shell pigments from chestnut shells, and provides a tannin extract or an extract containing the polysaccharides and the chestnut shell pigments prepared by the method. In a single extracting process, the extracting method can simultaneously obtain the tannin extract and the extract containing the polysaccharides and the chestnut shell pigments respectively. The method is high in extracting efficiency, and the prepared extracts have the advantages of high purity, no heavy metal pollution, and direct utilization for food industry.

Description

technical field [0001] The invention relates to the field of deep processing of agricultural products, in particular to a method for extracting tannins, polysaccharides and chestnut shell pigments from chestnut shells. Background technique [0002] Chestnut (Castanea mollissima Blume) belongs to the Fagaceae (Fagacene) plant, and its fruit is commonly called as chestnut, is the main specialty plant in my country, and one of the important dried fruits in the world. Because it is rich in sugar, starch, protein and various vitamins and minerals, and has low fat content. Sweet and warm in taste, non-toxic, it has the effects of invigorating the spleen and stomach, invigorating the kidney and strengthening tendons. Therefore, it has always been a kind of health food that people like very much. In recent years, with the increase of chestnut planting area and the continuous deepening of chestnut deep processing, the number of chestnut shells, which account for nearly 20% of chest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L33/105A23L5/43C09B61/00C09B67/54
CPCA23L5/43A23L33/105A23V2002/00C09B61/00C09B67/0096A23V2250/21
Inventor 高云
Owner 镇雄滇龙生态科技有限公司
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