Process for extracting alantin

An extraction process, the technology of inulin, applied in the field of inulin extraction process, can solve the problems of regular replacement, difficult storage, high production cost, etc., and achieve the effect of improving taste, not easy to agglomerate and clot, and improving solubility

Inactive Publication Date: 2005-07-06
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that the filter membrane is expensive, easy to be polluted, needs to be replaced regularly, and the production cost is high. Moreover, judging from the current technical situation of the filter membrane itself, it will take time in China to completely replace all other technologies with the filter membrane.
Publication number is the processing method of the patent inulin of CN 1422547A, and advantage is that proces...

Method used

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  • Process for extracting alantin

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preparation example Construction

[0047] (2) Preparation of α-form inulin: long-chain inulin can be precipitated and filtered out in high-concentration organic solvents. The organic solvents are preferably ethanol, methanol, and isopropanol. The method is to concentrate the water extract rich in inulin to less than 1 / 2 of the original extract, then add 1-5 times the amount of 95% alcohol (V / V), after adding the alcohol, the alcohol content of the solution is not less than 60 % (V / V), let stand for 2-5h, suction filtration or centrifugation, recover the alcohol from the solution, dissolve the precipitate with a small amount of water, recrystallize the alcohol several times, evaporate the solvent to obtain α-form inulin. Inulin obtained by this method is not as soluble in cold water as the β-form of inulin.

[0048] (3) β-form inulin: β-form inulin can be obtained by directly cooling the inulin extract at 0-3°C for 24-48 hours, and collecting the precipitate; a small amount of inulin seeds can be added during th...

Embodiment 1

[0064] Embodiment 1: produce efficient inulin

[0065] see figure 210kg dried chicory root slices were soaked at 25-30°C for 20-40min, extracted at 85°C, filtered to remove impurities, sterilized at 90-95°C, filtered to remove collagen, and rich The inulin-containing semen is decolorized and desalted with strong acid resin, strong basic resin and weak acid resin combined ion exchange method to obtain a colorless and transparent inulin-rich liquid, which is quickly concentrated under reduced pressure at a temperature of 60°C. When the inulin concentration reaches 40%, it can be stopped, and it is immediately subjected to the second stage of processing: normal pressure, 120°C, rapid concentration, and stops when the inulin concentration reaches 75%. The obtained inulin polymerization degree DP of 10-40 accounts for 75% at this moment. This inulin liquid was dried by blast drying method to obtain 4.324 kg of inulin with a water content of 12%.

Embodiment 2

[0066] Example 2: Preparation and separation of α-form inulin

[0067] See the specific process image 3 10kg of fresh chicory root, soaked at 30°C for 20min, or 10kg of dry chicory root slices, soaked at 60°C for 30min and mixed, then heated to 90°C for hot water extraction, centrifuged, and the residue was removed to obtain an inulin extract, and the above-mentioned inulin was extracted Liquid concentrated to inulin concentration 18%, through co 2 Add milk of lime to adjust the pH to 10-11, filter and discard the residue to obtain the inulin-rich filtrate, filter through an ultrafiltration membrane (pore size 0.1 μm) to obtain a clarified inulin liquid, and then concentrate it to about 50% of the original volume. Precipitate with water and ethanol to obtain inulin crystals; dissolve in distilled water, centrifuge and separate ethanol for repeated crystallization to obtain α-form inulin, and remove impurities from the α-form inulin ultrafiltration membrane (pore size 0.01 μm...

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Abstract

A process for extracting inulin is disclosed. Chicory fresh root is used as raw material, and long-term production of the inulin can be realized. Fine inulin and inulin with specific degree of polymerization can be produced.

Description

technical field [0001] The invention belongs to the field of chemical extraction, and in particular relates to an extraction process of inulin. Background technique [0002] Inulin (inulin) is a linear polysaccharide connected by β-2,1-glucosidic bonds between fructose residues (F) and glucose residues (G) at the end. In addition, inulin also contains a small amount of other A type of fructan (inulonose) is the fructan without glucose residues at the end. Inulin is widely present in various plants, especially in the roots of Compositae plants, such as 15-20% of Jerusalem artichoke and 13-20% of chicory (accounting for fresh root weight). The average degree of polymerization of inulin produced by plants under different production processes, different plants, different growth periods, and different climatic conditions is different. The degree of polymerization is different, its physical and chemical properties are different, and its function is also different. Inulin with di...

Claims

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Application Information

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IPC IPC(8): C08B37/00
Inventor 呼天明张存莉吴洪新
Owner NORTHWEST A & F UNIV
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