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Refining method of inulin

A refining method and technology for inulin, applied in the field of new resource food processing, can solve the problems of poor quality of inulin, low content of inulin, easy to absorb moisture and agglomerate, so as to improve yield, reduce material loss and shorten production time Effect

Inactive Publication Date: 2015-01-21
CHONGQING JOYWIN NATURAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is easy to operate and low in cost, but the obtained inulin contains fructose, glucose and sucrose, which makes the inulin content low and easy to absorb moisture and agglomerate, so the quality of the obtained inulin is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 500 Kg of fresh Jerusalem artichoke tubers, wash them with clean water, shred them, and carry out countercurrent extraction with pure water, the ratio of solid to liquid is 1:1.5, the extraction temperature is 60°C, and the extraction time is 40 min to obtain a crude extract, in which chrysanthemum The concentration of powder is 4.4%. Then the crude extract is ultrafiltered with an ultrafiltration membrane (molecular weight: 10,000 Daltons), and then desalted and decolorized through a strong acidic cation exchange resin and a weakly basic anion exchange resin in turn to obtain a colorless, clear and transparent effluent. Filtrate (molecular weight is 500 Daltons) and concentrate until the inulin concentration is 25%, and then spray dry to obtain 51 Kg of inulin powder with a purity of 93.4% and an ash content of 0.15%.

[0020]

Embodiment 2

[0022] Take 500 Kg of fresh Jerusalem artichoke tubers, wash them with clean water, shred them, put them in pure water and let them stand for leaching for 40 minutes, the ratio of solid to liquid is 1:1.5, and the extraction temperature is 60°C to obtain a crude extract. The concentration is 4.2%. Then use the milk of lime-phosphoric acid method to remove impurities and clarify the crude extract of inulin, and then pass through strong acidic cation exchange resin and strong basic anion exchange resin to desalt and decolorize successively to obtain a colorless, clear and transparent effluent. After concentration and spray drying, 51.8 Kg of inulin powder was obtained, with a purity of 87.2% and an ash content of 0.16%.

[0023]

Embodiment 3

[0025] Take 300 Kg of fresh Jerusalem artichoke tubers, wash them with clean water, cut into shreds, and carry out countercurrent extraction with pure water, the ratio of solid to liquid is 1:3, the extraction temperature is 40°C, and the extraction time is 50 min to obtain a crude extract, in which chrysanthemum The concentration of powder is 2.7%. Then the crude extract is ultrafiltered with an ultrafiltration membrane (molecular weight: 10,000 Daltons), and then desalted and decolorized through a strong acidic cation exchange resin and a weakly basic anion exchange resin in turn to obtain a colorless, clear and transparent effluent. Filtrate (molecular weight is 700 Daltons) and concentrate until the inulin concentration is 20%, and then spray dry to obtain 33 Kg of inulin powder with a purity of 90.7% and an ash content of 0.19%.

[0026]

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PUM

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Abstract

The invention discloses a refining method of inulin from jerusalem artichoke as a raw material. The refining method comprises the following steps: (1) cleaning the fresh raw material, shredding and carrying out countercurrent extraction; (2) filtering with an ultra-filtration membrane to obtain an inulin ultrafiltrate; (3) decolorizing the inulin ultrafiltrate by virtue of ion exchange resin and desalting; and (4) carrying out nanofiltration concentration and spray drying to obtain the inulin product. Since the countercurrent extraction is adopted in the refining method disclosed by the invention, the leaching of active components can be accelerated and the yield of the active components is greatly improved; due to the strongly acidic cation and weakly basic anion double-resin column, the material loss caused by a plurality of resin columns is reduced and the yield of the inulin can be also improved; the nanofiltration is performed by the nanofiltration membrane, a majority of glucose, fructose and sucrose can be removed and thus the purity of the inulin is improved and the quality of the inulin is also improved.

Description

Technical field [0001] The invention involves the field of food processing technology in new resources, especially a refined method of chrysanthemum powder with chrysanthemum or chrysanthemums. Background technique [0002] Chrysanthemum powder, also known as chrysanthemum, is a linear straight polysaccharide connected by β- (2 → 1) glucoside bond. The end often has a glucose residue with a polymer of 2-60.Chrysanthemum powder is another form of energy storage in addition to starch plants. It exists widely in almost all plants, of which the content of chrysanthemum and chrysanthemum is the highest.As a natural water -soluble dietary fiber, chrysanthemum powder is almost not digested and absorbed by the stomach and small intestine after entering the human body.Absorbing, controlling blood sugar and reducing blood lipids.As a natural functional food ingredient, chrysanthemum powder can be used as fat substitutes, and it can also improve the quality and nutritional characteristics o...

Claims

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Application Information

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IPC IPC(8): C08B37/18
Inventor 杨立琛徐小琴苌钊张卫刚阎岩杨刚柱
Owner CHONGQING JOYWIN NATURAL PROD
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