CN104709993A - Food-grade flocculant and preparation method thereof - Google Patents
Food-grade flocculant and preparation method thereof Download PDFInfo
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- CN104709993A CN104709993A CN201510083293.9A CN201510083293A CN104709993A CN 104709993 A CN104709993 A CN 104709993A CN 201510083293 A CN201510083293 A CN 201510083293A CN 104709993 A CN104709993 A CN 104709993A
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Abstract
The invention discloses food-grade flocculant and a preparation method thereof. The food-grade flocculant comprises the following components in parts by weight: 20-30 parts of chitosan, 5-15 parts of polyacrylamide, 10-20 parts of starch and 5-20 parts of gelatin. Compared with the prior art, the food-grade flocculant disclosed by the invention is very good in flocculation turbidity removal effect, can be used in the production preparation process of various food and medicines, and is safe and harmless. In addition, the preparation method disclosed by the invention has the advantages of simple process and low cost.
Description
Technical field
The invention belongs to Chemicals field, be specifically related to a kind of food grade flocculation agent and preparation method thereof.
Background technology
Flocculation agent totally can be divided into inorganic flocculating agent and organic floculant two class according to its chemical composition.Wherein inorganic flocculating agent comprises again inorganic flocculant and inorganic polymer flocculant; Organic floculant comprises again Syn-Organic flocculants, natural organic high-molecular flocculant and microbial flocculant.
Flocculation agent various in style, from low molecule to polymer, from single type to compound, total trend is the future development to cheap practical, non-toxic efficient.Inorganic flocculating agent low price, but can have a negative impact to human health and ecotope; Although organic polymer coargulator consumption is few, scum silica frost output is few, and flocculation ability is strong, flco is easily separated, oil removing and oil removal effective, but the residual monomer of this kind of superpolymer has " three cause " effect (causing rugged, carcinogenic, mutagenesis), thus makes its range of application be restricted; Because there is not secondary pollution in microbial flocculant, easy to use, and application prospect is tempting.Microbial flocculant may replace in future or partly replace traditional inorganic polymer and Syn-Organic flocculants.The development and application of microbial flocculant is in the ascendant, and its characteristic and advantage are that the development of water technology illustrates a wide prospect.
Existing flocculation agent is in preparation process, less to its security consideration.Especially at food/pharmaceutical manufacture field, the composite flocculant of highly effective and safe is also lacked.Therefore, the food grade flocculation agent that the present invention produces has wide market outlook.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of food grade flocculation agent and preparation method thereof, with the problem that the result of use solving prior art existence is not good.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of food grade flocculation agent, it comprises the component of following parts by weight:
Wherein, the component of parts by weight is preferably as follows:
The preparation method of above-mentioned food grade flocculation agent, it comprises the steps:
(1) be dissolved in after chitosan being mixed with partial starch in aqueous acetic acid, stir;
(2) be dissolved in after polyacrylamide being mixed with remaining starch in aqueous ethanolic solution, mix;
(3) by the mixed system mixing of gained in step (1) and step (2), stirring reaction 30min at 30 ~ 35 DEG C;
(4) in the mixed system of step (3) gained, point add gelatin 4 times, stirring and evenly mixing immediately after at every turn adding, adds interval 15min at every turn; Gelatin adds completely, continues reaction 2 ~ 3h at 55 ~ 70 DEG C on rotary shaker;
(5) the mixed system concentrating under reduced pressure of step (4) gained is filtered, by solid part washes of absolute alcohol, to obtain final product.
In step (1), described starch consumption is 45 ~ 55% of total consumption.
In step (1), the concentration of aqueous acetic acid is 0.5 ~ 2mol/L.
In step (2), the concentration of aqueous ethanolic solution is 0.5 ~ 2mol/L.
In step (3), described gelatin is gelatin powder, and granular size is 200 ~ 400 orders.
In step (4), the rotating speed of rotary shaker is 150 ~ 250 turns/min.
Beneficial effect: compared with prior art, the present invention has splendid flocculation turbidity removal effect, and can be applicable in the manufacture process of varieties of food items medicine, safe and harmless.Meanwhile, it is simple that the inventive method also has technique, advantage with low cost.
Embodiment
According to following embodiment, the present invention may be better understood.But those skilled in the art will readily understand, the content described by embodiment only for illustration of the present invention, and should can not limit the present invention described in detail in claims yet.
Embodiment 1
Material prepares: chitosan 250g, polyacrylamide 100g, starch 150g, gelatin 100g, 1mol/L aqueous acetic acid and 1mol/L aqueous ethanolic solution.
Preparation method:
(1) be dissolved in 1mol/L aqueous acetic acid after 250g chitosan being mixed with 75g starch, stir;
(2) be dissolved in 1mol/L aqueous ethanolic solution after 100g polyacrylamide being mixed with 75g starch, mix;
(3) by the mixed system mixing of gained in step (1) and step (2), stirring reaction 30min at 35 DEG C, the rotating speed of rotary shaker is 200 turns/min;
(4) in the mixed system of step (3) gained, point add gelatin 4 times, stirring and evenly mixing immediately after at every turn adding, adds interval 15min at every turn; Gelatin adds completely, continues reaction 3h at 60 DEG C on rotary shaker;
(5) the mixed system concentrating under reduced pressure of step (4) gained is filtered, by solid part washes of absolute alcohol, to obtain final product.
The food grade flocculation agent prepared in the present embodiment, in the wastewater treatment of cooking wine factory, the clearance of C O D reaches 93%; For in varieties of food items processing waste water time, solids reduce 97%; For oil-fat plant waste water, its BOD can be made to drop to 19m g/L from 143m g/L, and COD drops to 175mg/L from 2316mg/L.
Embodiment 2
Material prepares: chitosan 300g, polyacrylamide 150g, starch 200g, gelatin 200g, 2mol/L aqueous acetic acid and 2mol/L aqueous ethanolic solution.
Preparation method:
(1) be dissolved in 2mol/L aqueous acetic acid after 300g chitosan being mixed with 90g starch, stir;
(2) be dissolved in 2mol/L aqueous ethanolic solution after 150g polyacrylamide being mixed with 110g starch, mix;
(3) by the mixed system mixing of gained in step (1) and step (2), stirring reaction 30min at 30 DEG C;
(4) in the mixed system of step (3) gained, point add gelatin 4 times, stirring and evenly mixing immediately after at every turn adding, adds interval 15min at every turn; Gelatin adds completely, and on rotary shaker, continue reaction 3h at 70 DEG C, the rotating speed of rotary shaker is 250 turns/min;
(5) the mixed system concentrating under reduced pressure of step (4) gained is filtered, by solid part washes of absolute alcohol, to obtain final product.
The food grade flocculation agent prepared in the present embodiment, in the wastewater treatment of cooking wine factory, the clearance of C O D reaches 89%; For in varieties of food items processing waste water time, solids reduce 93%; For oil-fat plant waste water, its BOD can be made to drop to 30m g/L from 143m g/L, and COD drops to 193mg/L from 2316mg/L.
Embodiment 3
Material prepares: chitosan 200g, polyacrylamide 50g, starch 100g, gelatin 50g, 0.5mol/L aqueous acetic acid and 0.5mol/L aqueous ethanolic solution.
Preparation method:
(1) be dissolved in 0.5mol/L aqueous acetic acid after 200g chitosan being mixed with 55g starch, stir;
(2) be dissolved in 0.5mol/L aqueous ethanolic solution after 50g polyacrylamide being mixed with 45g starch, mix;
(3) by the mixed system mixing of gained in step (1) and step (2), stirring reaction 30min at 35 DEG C;
(4) in the mixed system of step (3) gained, point add gelatin 4 times, stirring and evenly mixing immediately after at every turn adding, adds interval 15min at every turn; Gelatin adds completely, and on rotary shaker, continue reaction 2h at 55 DEG C, the rotating speed of rotary shaker is 150 turns/min;
(5) the mixed system concentrating under reduced pressure of step (4) gained is filtered, by solid part washes of absolute alcohol, to obtain final product.
The food grade flocculation agent prepared in the present embodiment, in the wastewater treatment of cooking wine factory, the clearance of C O D reaches 89%; For in varieties of food items processing waste water time, solids reduce 93%; For oil-fat plant waste water, its BOD can be made to drop to 30m g/L from 143m g/L, and COD drops to 193mg/L from 2316mg/L.
Claims (8)
1. a food grade flocculation agent, is characterized in that, comprises the component of following parts by weight:
2. food grade flocculation agent according to claim 1, is characterized in that, is preferably as follows the component of parts by weight:
3. the preparation method of food grade flocculation agent according to claim 1, is characterized in that, comprise the steps:
(1) be dissolved in after chitosan being mixed with partial starch in aqueous acetic acid, stir;
(2) be dissolved in after polyacrylamide being mixed with remaining starch in aqueous ethanolic solution, mix;
(3) by the mixed system mixing of gained in step (1) and step (2), stirring reaction 30min at 30 ~ 35 DEG C;
(4) in the mixed system of step (3) gained, point add gelatin 4 times, stirring and evenly mixing immediately after at every turn adding, adds interval 15min at every turn; Gelatin adds completely, continues reaction 2 ~ 3h at 55 ~ 70 DEG C on rotary shaker;
(5) the mixed system concentrating under reduced pressure of step (4) gained is filtered, by solid part washes of absolute alcohol, to obtain final product.
4. the preparation method of food grade flocculation agent according to claim 3, is characterized in that, in step (1), described starch consumption is 45 ~ 55% of total consumption.
5. the preparation method of food grade flocculation agent according to claim 3, is characterized in that, in step (1), the concentration of aqueous acetic acid is 0.5 ~ 2mol/L.
6. the preparation method of food grade flocculation agent according to claim 3, is characterized in that, in step (2), the concentration of aqueous ethanolic solution is 0.5 ~ 2mol/L.
7. the preparation method of food grade flocculation agent according to claim 3, is characterized in that, in step (3), described gelatin is gelatin powder, and granular size is 200 ~ 400 orders.
8. the preparation method of food grade flocculation agent according to claim 3, is characterized in that, in step (4), the rotating speed of rotary shaker is 150 ~ 250 turns/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510083293.9A CN104709993A (en) | 2015-02-13 | 2015-02-13 | Food-grade flocculant and preparation method thereof |
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| CN201510083293.9A CN104709993A (en) | 2015-02-13 | 2015-02-13 | Food-grade flocculant and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104961299A (en) * | 2015-06-30 | 2015-10-07 | 广西立盛茧丝绸有限公司 | Processing method for reeling silk waste water |
| CN108101177A (en) * | 2017-12-22 | 2018-06-01 | 黄河三角洲京博化工研究院有限公司 | A kind of composite flocculation agent and its preparation method and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351290A (en) * | 2011-09-16 | 2012-02-15 | 中粮生物化学（安徽）股份有限公司 | Method for treating wastewater |
| CN102992439A (en) * | 2012-11-26 | 2013-03-27 | 山东泰德新能源有限公司 | Drinking water purifier and preparation method thereof |
| US20140056976A1 (en) * | 2012-08-27 | 2014-02-27 | Allan D. Pronovost | Methods and compositions for heavy metal removal and for oral delivery of desirable agents |
| CN104229957A (en) * | 2013-06-24 | 2014-12-24 | 张家领 | Compound flocculant taking natural minerals as main components |
-
2015
- 2015-02-13 CN CN201510083293.9A patent/CN104709993A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351290A (en) * | 2011-09-16 | 2012-02-15 | 中粮生物化学（安徽）股份有限公司 | Method for treating wastewater |
| US20140056976A1 (en) * | 2012-08-27 | 2014-02-27 | Allan D. Pronovost | Methods and compositions for heavy metal removal and for oral delivery of desirable agents |
| CN102992439A (en) * | 2012-11-26 | 2013-03-27 | 山东泰德新能源有限公司 | Drinking water purifier and preparation method thereof |
| CN104229957A (en) * | 2013-06-24 | 2014-12-24 | 张家领 | Compound flocculant taking natural minerals as main components |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104961299A (en) * | 2015-06-30 | 2015-10-07 | 广西立盛茧丝绸有限公司 | Processing method for reeling silk waste water |
| CN108101177A (en) * | 2017-12-22 | 2018-06-01 | 黄河三角洲京博化工研究院有限公司 | A kind of composite flocculation agent and its preparation method and application |
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Application publication date: 20150617 |