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A kind of method for preparing inulin

A technology of inulin and Jerusalem artichoke, which is applied in the field of preparing inulin, can solve the problems of large water consumption for ion exchange resin regeneration, reducing inulin recovery rate, low inulin recovery rate, etc., so as to improve equipment utilization rate and reduce inulin content The effect of loss, the process is simple and easy to operate

Active Publication Date: 2021-10-08
CHENGUANG BIOTECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Inulin is generally extracted from chicory or Jerusalem artichoke. Due to the late start in China in terms of deep processing, nanofiltration membrane separation technology is mainly used to produce inulin in China, but the purity is mostly below 80%, and the recovery rate of inulin is also very low. Currently There is also a method of producing high-purity inulin using advanced chromatographic separation technology in China, which is mainly to obtain the finished inulin by washing and extracting the raw materials, decolorizing, desalting, and then concentrating and drying the finished inulin after using chromatographic separation. The steps are complicated and time-consuming, and every additional process in the production process will increase the loss of effective substance content, too many process steps will reduce the recovery rate of inulin; and this method needs to be carried out before the chromatographic separation process Desalination, using ion exchange resin for desalination, not only takes a long time, but also consumes a lot of water for ion exchange resin regeneration, and the amount of sewage treatment in the later stage is large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing inulin, mainly comprising the following steps:

[0031] Step 1. Pretreatment: Wash 500kg of fresh Jerusalem artichoke raw materials to remove surface silt and other impurities, and transport the washed Jerusalem artichoke to a shredding machine through a feeding device. After shredding, Jerusalem artichoke shreds are obtained respectively.

[0032] Step 2, extraction: Carry out water extraction of Jerusalem artichoke shreds to obtain a crude extract, wherein the water is deionized water, the amount of deionized water added is 2 times the total mass of raw materials, the extraction time is 30min, the number of extractions is 5 times, and the extraction temperature 75°C;

[0033] Step 3, flocculation: transport the crude extract to the flocculation tank through the delivery pipeline, and add solid Ca(OH) to the crude extract while stirring 2 The flocculant is used for flocculation, and when the pH of the feed liquid is adjusted to 12, the addition ...

Embodiment 2

[0038] Step 1. Pretreatment: Wash 500 kg of fresh Jerusalem artichoke raw materials to remove surface silt and other impurities. The washed Jerusalem artichoke is transported to a shredding machine through a feeding device, and shredded to obtain shredded artichokes.

[0039]Step 2, extraction: Carry out water extraction of Jerusalem artichoke shreds to obtain a crude extract, wherein the water is deionized water, the amount of deionized water added is 4 times the total mass of raw materials, the extraction time is 40min, the number of extractions is 4 times, and the extraction temperature 60°C;

[0040] Step 3, flocculation: transport the crude extract to the flocculation tank through the delivery pipeline, and add solid Ca(OH) to the crude extract while stirring 2 The flocculant is used for flocculation, and when the pH of the feed liquid is adjusted to 10.2, the addition of the flocculant is stopped. During the flocculation process, activated carbon is added for impurity re...

Embodiment 3

[0045] Step 1. Pretreatment: Wash 300 kg of fresh Jerusalem artichoke raw materials to remove surface silt and other impurities. The washed Jerusalem artichoke is transported to a shredding machine through a feeding device, and shredded to obtain shredded artichokes. The diameter of the shredded artichokes is 1.2mm;

[0046] Step 2, extraction: Carry out water extraction of Jerusalem artichoke shreds to obtain a crude extract, wherein the water is deionized water, the amount of deionized water added is 5 times the total mass of raw materials, the extraction time is 50min, the number of extractions is 3 times, and the extraction temperature 50°C;

[0047] Step 3, flocculation: transport the crude extract to the flocculation tank through the delivery pipeline, and add solid Ca(OH) to the crude extract while stirring 2 The flocculant is used for flocculation, and when the pH of the feed liquid is adjusted to 9.5, the addition of the flocculant is stopped. During the flocculation ...

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Abstract

The invention discloses a method for preparing inulin, which belongs to the technical field of extraction and refining of natural extracts. The preparation method includes six steps of pretreatment, extraction, flocculation, filtration, concentration and separation. The invention improves the utilization rate of equipment, crude Activated carbon is added to the extract during the flocculation process, and the impurity removal, decolorization, and debittering processes of the extract are realized at the same time, the production steps are simplified, energy consumption is reduced, and the step of using ion exchange resin for desalination before chromatographic separation is effectively solved. Treatment of resin regeneration wastewater.

Description

technical field [0001] The invention relates to a method for preparing inulin, which belongs to the technical field of extraction and purification of natural extracts. Background technique [0002] Inulin is a functional fructan, which is a reserve polysaccharide in plants. As a pure natural functional ingredient, it is widely used in dairy products, beverages, low-fat and low-calorie foods, baked foods, and health foods. It has the effects of lowering blood fat, improving intestinal environment, promoting the proliferation of probiotics, preventing constipation, preventing colon cancer, promoting mineral absorption, and preventing obesity. [0003] Inulin is generally extracted from chicory or Jerusalem artichoke. Due to the late start in China in terms of deep processing, nanofiltration membrane separation technology is mainly used to produce inulin in China, but the purity is mostly below 80%, and the recovery rate of inulin is also very low. Currently There is also a me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/18
CPCC08B37/0003C08B37/0054
Inventor 卢庆国连运河安晓东梁星的高伟
Owner CHENGUANG BIOTECH GRP CO LTD
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