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Clean production technology for extracting inulin from jerusalem artichoke

A technology of clean production and Jerusalem artichoke, applied in the chemical industry, can solve the problems of unsuitability for large-scale industrial production, high resin cost, and long production cycle, and achieve good application prospects, reduce color, and be easy to operate.

Inactive Publication Date: 2015-06-03
张利 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the combined ion exchange method can not only remove the pigment of the extract, but also remove the metal ions and anions in the extract at the same time of decolorization, which changes the two-step process of decolorization and desalination in the extraction process of inulin in Jerusalem artichoke into One-step process simplifies the operation procedure. This method will greatly improve the production efficiency when used in actual production. However, this method is only suitable for processing a small amount of Jerusalem artichoke extract. For a large amount of high-viscosity system, it is easy to cause resin pollution. , the regeneration is difficult, and the cost of the resin is high. Before the experiment, the eluent must be screened by thin-layer chromatography, and then loaded on the column and eluted. The production cycle is long, and it is not suitable for large-scale industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 500g of fresh Jerusalem artichoke tubers (dry content is 20%, of which 70% is inulin), add hydrogen peroxide to soak to remove epidermal pigment, the concentration of hydrogen peroxide in the soaking liquid is 30%, at room temperature, after soaking for 12 hours, The epidermis is depigmented and becomes whitish in color. Take out the soaked Jerusalem artichoke raw material, after mechanical crushing, the crushing particle size is 250 mesh, the solid-to-liquid ratio is 1:15, under the condition of water bath temperature 80 ℃, stirring and leaching, the time is 80min. Then add lime milk / phosphoric acid to remove pectin, protein and other impurities in the inulin extract, adjust the pH to 11.5 with an appropriate amount of lime milk, let it stand for 20 minutes to filter and remove the slag, then add an appropriate amount of phosphoric acid to adjust the pH to 6.5, and let it stand for 20 minutes to filter After removing the slag, the inulin mother liquor was obtaine...

Embodiment 2

[0036] Weigh 500 g of fresh Jerusalem artichoke tubers (dry content is 20%, of which 70% is inulin), add hydrogen peroxide to soak to remove epidermal pigment, and the concentration of hydrogen peroxide in the soaking solution is 20%. At room temperature, after the immersion time is 12hr, the epidermis becomes whitish in color. Take out the soaked Jerusalem artichoke raw material and grind it mechanically. The crushed particle size is 200 mesh. Under the conditions of a water bath temperature of 80°C and a solid-to-liquid ratio of 1:15, stir and extract for 80 minutes, and filter to obtain the inulin extract. Add lime milk / phosphoric acid to remove pectin, protein and other impurities in the inulin extract, adjust the pH=11.5 with an appropriate amount of lime milk, let it stand for 20 minutes to filter and remove the residue; add an appropriate amount of phosphoric acid to adjust the pH=6.5, and let it stand for 20 minutes to filter out The inulin mother liquor was obtained a...

Embodiment 3

[0040] Weigh 500g of fresh Jerusalem artichoke tubers (dry matter content is 20%, of which 70% is inulin), add hydrogen peroxide for soaking to remove epidermal pigment, and the concentration of hydrogen peroxide in the soaking solution is 10%. At room temperature, after the immersion time is 12hr, the epidermis becomes whitish in color. Take out the raw material of soaked Jerusalem artichoke and grind it mechanically. The crushing particle size is 300 mesh. At a solid-to-liquid ratio of 1:20 and a water bath temperature of 80°C, stir and extract for 80 minutes, and filter to obtain the inulin extract. Add lime milk / phosphoric acid to remove pectin, protein and other impurities in the inulin extract, adjust the pH to 11.5 with an appropriate amount of lime milk, let it stand for 20 minutes to filter and remove residue, then add an appropriate amount of phosphoric acid to adjust the pH to 6.5, and let it stand for 20 minutes to filter out The inulin mother liquor was obtained a...

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Abstract

The invention relates to a clean production technology for extracting inulin from jerusalem artichoke. The technology comprises the following production steps: firstly, washing jerusalem artichoke tubers clean, removing sundries, soaking the jerusalem artichoke tubers with hydrogen peroxide or removing an epidermis pigment with dewatered jerusalem artichoke, drying and then storing; stirring and leaching mechanically crushed jerusalem artichoke raw material, filtering out residues, leaching the jerusalem artichoke residues again for 10 minutes, and carrying out filter pressing or centrifuging to obtain an inulin extract liquid; removing impurities such as pectin and protein from the inulin extract liquid by using lime milk / phosphoric acid; firstly adding lime milk, adjusting the pH to 11-13, standing at 80-90 DEG C for 20 minutes, and carrying out suction filtration to remove the residues; adding phosphoric acid, adjusting the pH to 5-7, and standing at 80-90 DEG C for 20 minutes; carrying out suction filtration to remove the residues, thus obtaining clear and transparent inulin mother liquor; and carrying out spray drying to obtain an inulin product which is white to light amber. The clean production technology is high in feasibility; the equipment is simple and easy to operate; the jerusalem artichoke residues generated after primary filtration can be used as a raw material for producing a feed; the hydrogen peroxide soak liquid can be used for a plurality of times; and emission of waste residues and liquid can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a clean production process for extracting inulin from Jerusalem artichoke. Background technique [0002] The common name of Jerusalem artichoke is Jerusalem artichoke, and its skin is reddish brown or dark yellow. Fresh Jerusalem artichoke tubers contain 14-19% inulin, and dehydrated Jerusalem artichoke dry flakes contain about 70% inulin. Inulin is one of the naturally occurring soluble fibers in nature. It is a natural functional edible polysaccharide. It has the functional properties of low fat, low calorie and biologically active precursor. As an excellent functional and health food, it has broad application prospects. [0003] Research on the extraction of inulin from Jerusalem artichoke as a raw material and the development of related functional foods can not only promote the industrialization of inulin, but also increase the added value of agricultura...

Claims

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Application Information

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IPC IPC(8): C08B37/18
Inventor 张利赵同强杜建飞李文东王德科
Owner 张利