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Method for producing high-purity inulin

A technology of high-purity inulin and production method, which is applied in the field of chemical industry, can solve the problems of high consumption of acid and alkali, hydrolysis of inulin, low pH value, etc., achieve high degree of polymerization of inulin, realize comprehensive utilization, and high purity of inulin Effect

Inactive Publication Date: 2011-01-26
SHANDONG NINE RING GASOLINEEUM MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production process, due to the purification of the strong acid resin, the pH value of the inulin solution will be low for a period of time, and part of the inulin will be hydrolyzed, and the acid and alkali resin will consume a large amount of acid and alkali during use. A large amount of waste water is produced, causing environmental pollution, and the treatment of a large amount of waste water results in an increase in the cost of inulin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 5,000 kg of fresh Jerusalem artichoke root, wash it with water to remove soil, cut it into shreds and enter a continuous countercurrent extractor, use pure water for countercurrent extraction, the volume ratio of raw materials is 1:1.5, the extraction temperature is 90 ° C, and the extraction time is 30 minutes After adding a flocculant to the extract, removing impurities and filtering to obtain 7500 liters of a clear and transparent inulin solution with an inulin content of 8%. Then successively pass through macroporous decolorizing resin, strong acid resin, strong base resin to carry out decolouring, ion exchange to obtain 7500 liters of neutral colorless and transparent inulin content 7.0% inulin solution, above-mentioned macroporous decolorizing resin, strong acid resin, strong base Regeneration of the resin is to use 12% sodium chloride solution as the regeneration solution, and the amount used is twice the volume of the resin. Then use the nanofiltration memb...

Embodiment 2

[0018] Take 5000 kg of fresh chicory tubers, wash them with clean water to remove soil, shred them and enter a continuous countercurrent extractor, use pure water for countercurrent extraction, the volume ratio of raw materials is 1:2, the extraction temperature is 50 °C, and the extraction time is 60 minutes After the extract was added with flocculant, it was filtered to obtain 7500 liters of clear and transparent inulin solution with 9% inulin content. Then carry out decolouring, ion exchange through macroporous decolorization, strong acid ion, strong base ion exchange resin continuously to obtain 7500 liters of inulin solution of neutral colorless and transparent inulin content 8.9%, above-mentioned macroporous decolorization resin, strong acid resin, strong base The regeneration of the resin is to use 8% sodium chloride solution as the regeneration solution, and the usage amount is 4 times of the volume of the resin. Then use the nanofiltration membrane with molecular weig...

Embodiment 3

[0020] Take 5,000 kg of fresh Jerusalem artichoke root, wash it with clean water to remove soil, shred it and enter a continuous countercurrent extractor, use pure water for countercurrent extraction, the volume ratio of raw materials is 1:1.7, the extraction temperature is 70 ° C, and the extraction time is 45 minutes After adding a flocculant to the extract, removing impurities and filtering to obtain 7500 liters of a clear and transparent inulin solution with an inulin content of 8%. Then successively pass through macroporous decolorizing resin, strong acid resin, strong base resin to carry out decolouring, ion exchange to obtain 7500 liters of inulin solution of neutral colorless and transparent inulin content 8%, above-mentioned macroporous decolorizing resin, strong acid resin, strong base The regeneration of the resin is to use 10% sodium chloride solution as the regeneration solution, and the usage amount is 3 times of the volume of the resin. Then use the nanofiltrati...

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Abstract

The invention provides a method for producing high-purity inulin, which comprises the following steps of: a, performing cleaning, shredding, countercurrent leaching, flocculation and impurity removal, and filtration on jerusalem artichoke or chicory serving as a raw material to obtain inulin feed solution; b, making the inulin feed solution obtained in the step a pass through macroporous decolorization resin, strong acid resin, and strong base resin for decoloration in turn at a linear speed of 2-3 meters / second, and performing ion exchange to obtain inulin solution, wherein the macroporous decolorization resin, the strong acid resin, and the strong base resin are respectively added with 8 to 12 weight percent sodium chloride solution in an amount which is 2 to 4 times volume thereof for regeneration; and c, performing nanofiltration on the inulin solution by using a nanofiltration membrane, eluting monosaccharide and sodium chloride by using purified water, concentrating, and performing spray drying to obtain the product. The method has the advantages of avoiding hydrolysis caused by reduced pH value of the inulin solution, regenerating and recycling ion exchange resin, and realizing comprehensive utilization, clean production and pollution-free emission in the whole production process.

Description

Technical field: [0001] The invention relates to the technical field of chemical industry, in particular to a production method for preparing high-purity inulin from Jerusalem artichoke or chicory. Background technique: [0002] Inulin (inulin) is a special natural fructan carbohydrate contained in plants. It is connected by β-2,1 glycosidic bonds and has a linear structure (including short branched chains). The average length of the molecular chain is about 30-35 Fructose units, up to 60 fructose units, the reducing end is connected with a glucose residue, and the molecular weight is about 3000-5000 Daltons. Maturity, post-harvest preservation conditions and time of Jerusalem artichoke, technical conditions of processing process, etc. Known 36,000 kinds of plants contain inulin, accounting for about one-third of the total amount of plants. Several plants with more content are: Jerusalem artichoke (J.artichoke) 16-20%, chicory (chicory) 15-20%, Garlic (garlic) 9-11%, leek ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/18
Inventor 辛程勋
Owner SHANDONG NINE RING GASOLINEEUM MACHINERY
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