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Efficient flocculant for improving yield of stevioside

A technology of glycoside yield and flocculant, which is used in flocculation/sedimentation water/sewage treatment, adsorption water/sewage treatment, etc. It can solve the problem of slow flocculation reaction, long period of flocculation reaction and clarification by press filtration, and fine floc particles, etc. To improve the flocculation reaction speed, shorten the production cycle, and reduce the effect of charge repulsion

Active Publication Date: 2015-11-11
BENGBU HUADONG BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the traditional chemical impurity removal method is convenient and practical, but there are disadvantages such as slow flocculation reaction and small floc particles, and the cycle of flocculation reaction and press filtration clarification is longer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A high-efficiency flocculant for improving the yield of steviol glycosides proposed by the present invention, its raw materials include by weight: 30 parts of modified lignin, 35 parts of modified polyferric sulfate, 3 parts of polyaluminum ferric chloride, and 15 parts of polyaluminum sulfate 4 parts of magnesium citrate, 20 parts of xanthan gum, 2 parts of activated carbon, 2 parts of diatomaceous earth, 2 parts of zeolite powder.

[0028] The preparation method of modified lignin is as follows: add 12 parts of lignin by weight to 5 parts of sodium hydroxide aqueous solution with a concentration of 0.6mol / L, raise the temperature to 78°C, and keep it for 1.4h, then add dropwise 15 parts with a concentration of 1.2 mol / L 3-chloro-2-hydroxypropyltrimethylammonium chloride aqueous solution, then continue to insulate for 1.2h, then adjust to neutral to obtain the first material; add the first material in ethanol, filter, and dry to obtain the second The second material; a...

Embodiment 2

[0031] A high-efficiency flocculant for improving the yield of steviol glycosides proposed by the present invention, its raw materials include by weight: 38 parts of modified lignin, 27 parts of modified polyferric sulfate, 5 parts of polyaluminum ferric chloride, and 13 parts of polyaluminum sulfate 6 parts of magnesium citrate, 14 parts of xanthan gum, 2.6 parts of activated carbon, 1.5 parts of diatomaceous earth, and 3.4 parts of zeolite powder.

[0032] The preparation method of modified lignin is as follows: add 10.5 parts of lignin to 7 parts of sodium hydroxide aqueous solution with a concentration of 0.4mol / L in parts by weight, raise the temperature to 80°C, and keep it for 1.2 hours, then add dropwise 17 parts of lignin with a concentration of 1mol / L / L of 3-chloro-2-hydroxypropyltrimethylammonium chloride aqueous solution, then continue to insulate for 1.4h, then adjust to neutrality to obtain the first material; add the first material to ethanol, filter, and dry to...

Embodiment 3

[0035] A high-efficiency flocculant for improving the yield of steviol glycosides proposed by the present invention, its raw materials include by weight: 32 parts of modified lignin, 33 parts of modified polyferric sulfate, 4 parts of polyaluminum ferric chloride, and 14 parts of polyaluminum sulfate 5 parts, 5 parts of magnesium citrate, 18 parts of xanthan gum, 2.2 parts of activated carbon, 1.8 parts of diatomaceous earth, 2.5 parts of zeolite powder.

[0036] The preparation method of modified lignin is as follows: add 11.2 parts of lignin to 6 parts of sodium hydroxide aqueous solution with a concentration of 0.5 mol / L in parts by weight, raise the temperature to 79 ° C, keep it for 1.3 hours, and then add 16 parts of it with a concentration of 1.1 mol / L 3-chloro-2-hydroxypropyltrimethylammonium chloride aqueous solution, then continue to insulate for 1.3h, and then adjust to neutrality to obtain the first material; add the first material to ethanol, filter, and dry to obt...

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PUM

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Abstract

The invention discloses efficient flocculant for improving the yield of stevioside. The efficient flocculant comprises, by weight, 30-40 parts of modified lignin, 25-35 parts of modified polymerization ferric sulfate, 3-6 parts of polyaluminum ferric chloride, 12-15 parts of polyaluminium sulfate, 4-8 parts of magnesium citrate, 12-20 parts of xanthan gum, 2-3 parts of activated carbon, 1-2 parts of kieselguhr and 2-4 parts of zeolite powder. The efficient flocculant for improving the yield of stevioside is fast in flocculoreaction, the production period is shortened, and particles of a flocculating constituent are large, and are easy to separate.

Description

technical field [0001] The invention relates to the technical field of flocculants, in particular to a high-efficiency flocculant for improving the yield of steviol glycosides. Background technique [0002] Steviol glycoside refining refers to the removal of substances that are not steviol glycosides or high-quality glycoside components in the stevia extract by physical, chemical, biological or a combination of the three to obtain higher purity steviol glycosides process or result. [0003] The stevioside in stevia water extract accounts for 4-7%, and the remaining 93-96% is non-glycoside components such as water, organic matter and inorganic matter. Among the non-glycoside components, protein accounts for 10-15%; coloring substances account for 8-12%, such as chlorophyll, lutein, carotene, β-carotene; gum extract accounts for 7-15%, and the main gum is mucilage arabic Gum and syringa gum; inorganic matter accounts for 13%, of which inorganic ions are alkaline cations, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F1/52C02F1/54C02F1/28
Inventor 邢飞邢伟张志华庞正银
Owner BENGBU HUADONG BIOLOGICAL TECH
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