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Flocculant capable of improving refining efficiency of stevioside

A steviol glycoside and flocculant technology, which is applied in the preparation of sugar derivatives, sugar derivatives, sugar derivatives, etc., can solve the problems of slow flocculation reaction, loss of glycoside adsorption, long flocculation reaction and filter press clarification period, etc. Settling speed, improving flocculation performance and shortening production cycle

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, small floc particles and glycosides are easily absorbed and lost by flocculation sediments, 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

[0025] A kind of flocculant that can improve the refining efficiency of steviol glycoside proposed by the present invention, its raw material comprises by weight: 12 parts of modified chitosan, 30 parts of modified polyaluminum chloride, 20 parts of polyferric sulfate, 20 parts of ferric citrate parts, 8 parts of magnesium sulfate, 25 parts of iron polysilicate, 5 parts of activated carbon, and 2 parts of bentonite.

[0026] The preparation method of modified chitosan is as follows: add 0.6 parts of chitosan into 3 parts of ferrous sulfate aqueous solution with a concentration of 0.1mol / L according to parts by weight and mix evenly, then add 2 parts of sodium peroxide, and stir for 3 hours to obtain Modified lignin.

[0027] The preparation method of modified polyaluminum chloride is as follows: add hydrochloric acid to 20 parts by weight of 3 wt% silane coupling agent KH570 aqueous solution until the pH is 4, after standing for 14 hours, add 22 parts of polyaluminum chloride ...

Embodiment 2

[0029] A kind of flocculant that can improve the refining efficiency of steviol glycoside proposed by the present invention, its raw material comprises by weight: 18 parts of modified chitosan, 20 parts of modified polyaluminum chloride, 25 parts of polyferric sulfate, 12 parts of ferric citrate 12 parts of magnesium sulfate, 15 parts of iron polysilicate, 7 parts of activated carbon, and 1 part of bentonite.

[0030] The preparation method of modified chitosan is as follows: add 1 part of chitosan into 2 parts of ferrous sulfate aqueous solution with a concentration of 0.2 mol / L and mix evenly, then add 1.5 parts of sodium peroxide, and stir for 5 hours to obtain Modified lignin.

[0031]The preparation method of modified polyaluminum chloride is as follows: add hydrochloric acid to 16 parts by weight of 5 wt% silane coupling agent KH570 aqueous solution until the pH is 3, after standing for 16 hours, add 18 parts of polyaluminum chloride After mixing evenly, adjust the pH t...

Embodiment 3

[0033] A kind of flocculant that can improve the refining efficiency of steviol glycoside proposed by the present invention, its raw material comprises by weight: 14 parts of modified chitosan, 26 parts of modified polyaluminum chloride, 22 parts of polyferric sulfate, 18 parts of ferric citrate parts, 9 parts of magnesium sulfate, 22 parts of iron polysilicate, 5.4 parts of activated carbon, and 1.7 parts of bentonite.

[0034] The preparation method of modified chitosan is as follows: add 0.7 parts of chitosan by weight to 2.6 parts of ferrous sulfate aqueous solution with a concentration of 0.12mol / L and mix evenly, then add 1.9 parts of sodium peroxide and stir for 3.2 hours Obtain modified lignin.

[0035] The preparation method of modified polyaluminum chloride is as follows: add hydrochloric acid to 19 parts by weight of 3.6 wt% silane coupling agent KH570 aqueous solution until the pH is 4, after standing for 14.5 hours, add 21 parts of polyaluminum chloride After the...

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PUM

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Abstract

The invention discloses flocculant capable of improving the refining efficiency of stevioside. The flocculant comprises, by weight, 12-18 parts of modified chitosan, 20-30 parts of modified aluminum polychlorid, 20-25 parts of polymeric ferric sulfate, 12-20 parts of ferric citrate, 8-12 parts of magnesium sulfate, 15-25 parts of polymeric ferric silicate-sulfate, 5-7 parts of activated carbon and 1-2 parts of bentonite. According to the flocculant capable of improving the refining efficiency of stevioside, flocculoreaction is quick, the production cycle is shortened, flocculating constituents are large in particle and easy to separate, and glucoside cannot be adsorbed by flocculent precipitate easily.

Description

technical field [0001] The invention relates to the technical field of stevioside refining, in particular to a flocculant capable of improving the efficiency of stevioside refining. 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. Usually, the object of refinement can be stevioside aqueous phase extract, or its alcohol-based extract; refinement techniques can be multi-stage, including pre-refining, refining and multiple crystallization and other refining techniques. [0003] According to relevant research reports, the Stevia rebaudiana water extract extracted by hot water contains a large amount of impurities such as water-soluble polysaccharides, proteins, organic acids, saponins, chlorophyll, pigments, inorganic sal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/256C07H1/06
Inventor 邢飞邢伟张志华庞正银
Owner BENGBU HUADONG BIOLOGICAL TECH
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