CN101481745A - Method for damaging oxidase in cane juice - Google Patents
Method for damaging oxidase in cane juice Download PDFInfo
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- CN101481745A CN101481745A CNA2008100734226A CN200810073422A CN101481745A CN 101481745 A CN101481745 A CN 101481745A CN A2008100734226 A CNA2008100734226 A CN A2008100734226A CN 200810073422 A CN200810073422 A CN 200810073422A CN 101481745 A CN101481745 A CN 101481745A
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Abstract
The invention provides a method for destroying oxidase in cane juices. The method comprises the following steps: at a juice extraction stage of a sugar making process, CIO2 is added to cane juices juiced by each squeezer at the juice extraction stage or quasi delivered to osmotic water of the last-an M squeezer; oxidase in the cane juices are destroyed; M is any integer from 2 to 10; the cane juices juiced by each squeezer at the juice extraction stage include diluted cane juices quasi delivered to an N squeezer after being juiced by an N plus 1 squeezer; the value range of N is that N is any integer from 2 to 9; or the cane juices juiced by each squeezer at the juice extraction stage include a mixed cane juice mixed and formed by a cane juice juiced by a first squeezer and a cane juice juiced by a second squeezer after passing through a curved sieve. Compared with the prior art, the method has the beneficial effects that (1), the damage ratio of oxidase in the cane juices reaches more than 80 percent; (2), a sugar product has the advantages of low color value, low sulphur content, improved purity and high quality; (3), no sucrose loss is caused; and (4), the method has the advantages of simple process and low cost.
Description
Technical field:
The present invention relates to a kind of sugar refining technology method, relate in particular to a kind of oxidasic method in the sugarcane juice of in sugar manufacturing process, destroying.
Background technology:
The colour of white sugar is the quality index that white sugar is most important, technical difficulty is maximum.The kind of coloring matter is very many and complicated in the sugar products, comprises the coloring matter two big classes that contained originally in the sugarcane and generate in process of production.Originally the pigment that contained in the sugarcane mainly contains fat-soluble and water-soluble two big classes, and the lipoid coexistence is water insoluble basically in the former and the sugarcane juice, and major part can be removed when heating.Water colo(u)r mainly is various polyphenols, and they are the major causes that make white sugar and various sugar products band looks.On the other hand, in sugar manufacturing process, except clarifying treatment is removed the part coloring matter, all constantly generate new coloring matter, or original colourless or light material becomes more dark material.Therefore, reduce the colour of white sugar, must or avoid generation two aspects of the new coloring matter of sugaring process to start with from clarification link and inhibition.
The color of original sugarcane juice and not really dark in the sugarcane, but the color of sugarcane juice and syrup molasses will be firmly got manyly in process of production, and this mainly is owing to produced the chemical reaction of a lot of complexity generate dark matter and cause in squeezing and system refining production process.Generally speaking, these dark matters are that the polyphenols in the sugarcane juice combines with iron, under the effect of polyphenoloxidase, form with oxygen generation oxidizing reaction, that is to say, Polyphenols, iron and oxygen, oxydase are that dark fundamental cause appears in sugar products, reduce any one factor the color of sugar products is shoaled.
Currently used Closed Circulation in Sugar Production method forms dark material in the extraction of the juice stage, then spends very big cost to go decolouring at latter stage by every possible means.This is a very big contradiction.Should make great efforts to seek a kind of feasible method, the pigment that as far as possible reduces the last stage generates, and alleviates the burden of latter stage decolouring.Yet, in sugar manufacturing process, be difficult to avoid contacting iron product and air, also can not avoid polyphenols.How to find a kind of simple, easy row, low cost method, the oxydase in the sugarcane juice is in time destroyed, the color of sugar products is reduced, reduce the decolouring cost of latter stage, improve the quality product of white sugar simultaneously.
Present studies show that oxydase causes the intensification of sugarcane juice color in the effect of following several respects:
(1) tyrosine in the sugarcane juice is subjected to the polyphenoloxidase effect and generates adjacent diphenol phenylalanine (dihydroxyphenylalanine DOPA) is the principal element of sugarcane juice, syrup and white sugar colour developing; The oxidized again enzymatic oxidation of DOPA, or oxidation voluntarily under certain conditions, the result also generates dark matter; DOPA also can generate dark matter with iron (divalence or trivalent) reaction.
(2) original polyphenols has polymer and low molecular in the sugarcane, and big Polyphenols molecule can fragment into little phenolic material, forms more pigment; And the effect condensation of the oxidated enzyme of small molecules meeting generates more dark macromolecular cpd.
If can destroy the oxydase in the sugarcane juice, just can make the new coloring matter that in follow-up technological process, produces significantly reduce.The U.S. once the someone study with heating means and handle sugarcane with disruptive oxidation enzyme, but owing to the cost reason is difficult to promote.Therefore, how finding a kind of simple, easy row, low cost method, the oxydase in the sugarcane juice is in time destroyed, is present sugar manufacturing industry problem demanding prompt solution.
Summary of the invention:
The technical problem to be solved in the present invention is: oxidasic method in a kind of destruction sugarcane juice is provided, thereby this method can effectively reduce oxidasic content in the sugarcane juice, reduce the content of coloring matter in the sugarcane juice colour reduction final finished white sugar and the residual quantity of sulphur, improve white sugar purity and quality simultaneously, reduce the decolouring cost of latter stage, to solve the problem that prior art exists.
The technical scheme that solves its above-mentioned technical problem is: oxidasic method in a kind of destruction sugarcane juice, it is in the extraction of the juice stage of sugaring process, with ClO
2Add to respectively or simultaneously in each squeezing machine expressed sugarcane juice of extraction of the juice stage or intend sending in the infiltration water of last squeezing machine, the oxydase in the sugarcane juice is destroyed; Make oxydase sex change inactivation, no longer can play katalysis, can destroy aldehydes matter simultaneously, stop the oxidation of polyphenols to generate dark matter, thereby avoid the generation of new pigment the oxidizing reaction of Polyphenols.
Further technical scheme of the present invention is: in the extraction of the juice stage of sugaring process, with ClO
2Add to and intend delivering to rare sugarcane juice of N platform squeezing machine after N+1 platform squeezing machine squeezes out, the span of N is: N is any one number in 2,3,4,5,6,7,8 or 9.
Further technical scheme of the present invention can also be: in the extraction of the juice stage of sugaring process, with ClO
2Directly add in the mixing juice oxydase that mixes in the sugarcane juice is destroyed; Described mixing sugarcane juice is meant that the sugarcane juice of squeezing out from first squeezing machine mixes the mixing sugarcane juice that forms with the sugarcane juice of squeezing out from second squeezing machine by behind the song sieve.
Further technical scheme of the present invention can also be: in the extraction of the juice stage of sugaring process, with ClO
2Adding to and intend sending into last---in the infiltration water of M platform squeezing machine, this is mixed with ClO
2Infiltration water flow and the pumping process in will and ClO
2Mix fully and enter at last through each squeezing machine and mix in the sugarcane juice, the oxydase in the sugarcane juice is destroyed, the span of described M is: M is any one number in 2,3,4,5,6,7,8,9 or 10.
Because adopt technique scheme, oxidasic method compared with prior art has following beneficial effect in a kind of destruction sugarcane juice of the present invention:
(1) oxidasic destructive rate in the sugarcane juice is reached more than 80%.ClO
2Be a kind of oxygenant, its oxidisability makes protein denaturation, thereby makes enzyme deactivation.
(2) adopt the sugarcane juice colour after the present invention handles low, thereby make the colour of work in-process syrup and finished product white sugar low, the quality product height.The white sugar colour is subjected to syrup quality and effects of operation conditions, thereby the colour of sugarcane juice directly has influence on the colour of syrup and white sugar.Coloring matter in the syrup derives from two aspects: the one, and the natural pigment that brings in the sugarcane raw material; The 2nd, the new coloring matter that in sugar manufacturing process, constantly generates, or original colourless or light material becomes more dark material.As previously mentioned, the color of original sugarcane juice and not really dark in the sugarcane, but the color of sugarcane juice and syrup molasses will be firmly got manyly in process of production, and this is if because in squeezing and system refining production process, the oxidation under oxidasic effect of polyphenols and iron ion forms the very dark material of color.ClO
2Oxydase in the sugarcane juice is destroyed, destroyed aldehydes matter simultaneously, the new coloring matter that syrup produces in the follow-up technological process is significantly reduced, the colour ratio of sugarcane juice (mixing juice) is without ClO
2The situation of disruptive oxidation enzyme reduces 40%-60%, and clear juice (mixing the syrup of sugarcane juice after clarification) colour then reduces more than 40%, and the colour of syrup reduces significantly, has improved the quality of white sugar.
(3) the white sugar sulphur content is low.Pass through ClO
2Oxydase in the sugarcane juice is destroyed, destroyed aldehydes matter simultaneously, the new coloring matter that produces in the follow-up technological process is significantly reduced, reduce in the stove drying and needed intensity of sulfitation, even can cancel secondary stove drying (syrup sulphur floats); Above-mentioned two kinds of situations all can make the SO that adds syrup
2Amount reduces, and also makes the SO that remains in the syrup simultaneously
3 2-Amount significantly reduces (compare with existing sulfurous method clarification process and reduce 30%-70%), thereby reduces the content of sulphur in the white sugar.
(4) purity of white sugar improves.Original polyphenols has polymer and low molecular in the sugarcane, and big Polyphenols molecule can fragment into little phenolic material, forms more pigment; And the effect condensation of the oxidated enzyme of small molecules meeting generates more dark macromolecular cpd.In the crystallisation process of sucrose, though the coloring matter in the syrup (pigment) major part is difficult for entering in the crystal, but the high-molecular weight coloring matter in the syrup can enter into white sugar or former sugar crystal with larger proportion, becomes the main pigment of white sugar or raw sugar.Therefore, how stoping the formation of high-molecular weight coloring matter molecule, is an effective way that reduces the white sugar colour.And ClO
2Oxydase in the sugarcane juice effectively can be destroyed, thereby stoped the small molecules condensation to generate the formation of more dark macromolecular cpd, reduced the ratio that pigment enters into crystal, reduced the colour of white sugar, improve the purity of white sugar simultaneously, improve the quality of product white sugar.
(5) can not cause the sucrose loss.Because ClO
2Object to oxidation has selectivity, i.e. ClO
2Can destroy the oxydase in the sugarcane juice, can destroy aldehydes matter simultaneously, but can not carry out oxidation, guarantee that sucrose can not lose, thereby avoid other oxygenant owing to there is not selectivity that glycosidic link is carried out the loss that oxidation causes sucrose to glycosidic link.
(6) technology is simple, cost is low.Adopt ClO
2Oxydase in the sugarcane juice is destroyed, and consumption is few, and technology is simple, need not original technical process is changed, and has obviously improved the economic benefit in sugar refinery; In addition, pass through ClO
2Sugarcane juice is handled, can be reduced sulphur and (be used to produce SO
2) and lime (be used to produce Ca (OH)
2) consumption, what is more important can be cancelled big, the higher syrup phosphorus float glass process of working cost of investment, significantly reduces the investment working cost, has alleviated the loss of sucrose simultaneously.
Below, in conjunction with the accompanying drawings and embodiments the present invention a kind of destroyed that the technical characterictic of oxidasic method is further described in the sugarcane juice.
Description of drawings:
Fig. 1: a kind of process flow sheet that destroys oxidasic method in the sugarcane juice of the present invention.
Embodiment:
Embodiment one:
Oxidasic method in a kind of destruction sugarcane juice, it is in the sugaring process extraction of the juice stage, with dioxide peroxide (ClO
2) add in the dilute juice oxydase in the sugarcane juice is destroyed, described dilute juice is meant the dilute juice that is back to second squeezing machine from the 3rd squeezing machine, is about to ClO
2Directly add to from the 3rd squeezing machine and be back to the dilute juice of second squeezing machine (referring to Fig. 1) ClO
2Addition be 0.001%～0.05% weight of raw material sugarcane weight.
A kind of conversion as present embodiment, described dilute juice also can be to be back to the dilute juice of the 4th squeezing machine or to be back to the dilute juice of the 3rd squeezing machine from the 4th squeezing machine from the 5th squeezing machine, generally be meant the dilute juice that is back to N platform squeezing machine from N+1 platform squeezing machine, the value of N is any one number in 3,4,5,6,7,8 or 9, according to the difference of sugarcane juice colour, ClO
2Addition also can increase or reduce, be generally 0.0005%～0.3% weight of raw material sugarcane weight.
Embodiment two:
Oxidasic method in a kind of destruction sugarcane juice is in the sugaring process extraction of the juice stage, with dioxide peroxide (ClO
2) add in the mixing juice oxydase in the sugarcane juice is destroyed, described mixing juice is meant that the sugarcane juice of squeezing out from first squeezing machine mixes the mixing sugarcane juice (referring to Fig. 1) that forms with the sugarcane juice of squeezing out from second squeezing machine by behind the song sieve, adds the ClO that mixes in the sugarcane juice to
2Consumption is 0.001%～0.05% weight of raw material sugarcane weight, according to the difference of mixing the sugarcane juice colour, ClO
2Addition also can increase or reduce, be generally 0.0005%～0.3% weight of raw material sugarcane weight.
Embodiment three:
Oxidasic method in a kind of destruction sugarcane juice is in the sugaring process extraction of the juice stage, adopts dioxide peroxide (ClO
2) oxydase in the sugarcane juice is destroyed, its method is with ClO
2Add in the infiltration water of intending sending into the 5th squeezing machine (referring to Fig. 1), this is mixed with ClO
2Infiltration water flow and the pumping process in will and ClO
2Mix and enter dilute juice entering at last and mix in the sugarcane juice and with rare sugarcane juice or mixes oxydase reaction in the sugarcane juice fully, thereby reach oxidasic purpose in the destruction sugarcane juice through each squeezing machine.Its addition is 0.001%～0.05% weight of this batch raw material sugarcane weight.
As a kind of conversion of present embodiment, when the quantity of described squeezing machine increases or reduces, also can be with ClO
2Adding to and intend sending into last---in the infiltration water of M platform squeezing machine, the value of described M is any one number in 2,3,4,5,6,7,8,9 or 10, ClO
2Addition also can increase or reduce, be generally 0.0005%～0.3% weight of raw material sugarcane weight.
As a kind of conversion of the embodiment of the invention one, two, three, oxidasic method in the described a kind of destruction sugarcane juice of each embodiment can be that independent use also can be three kinds and uses simultaneously or the application that combines of any two kinds of methods wherein.That is: in the sugaring process extraction of the juice stage, adopt dioxide peroxide (ClO
2) oxydase in the sugarcane juice is destroyed, can be with ClO
2Add dilute juice, mixing juice, plan simultaneously respectively to and send into last---in the infiltration water of M platform squeezing machine; Or add to respectively simultaneously in wherein certain two kinds of liquid, for example: add in dilute juice and the mixing juice simultaneously respectively; Or add dilute juice to respectively simultaneously and plan is sent into last---in the infiltration water of M platform squeezing machine; Or add mixing juice to respectively simultaneously and plan is sent into last---in the infiltration water of M platform squeezing machine; ClO
2Consumption is decided according to the height of sugarcane juice colour, is 0.0005%～0.2% weight of this batch raw material sugarcane gross weight, and its total consumption must not be greater than 0.5% weight of this batch raw material sugarcane gross weight.
In the various embodiments of the present invention, described ClO
2Be gasiform ClO
2, its addition manner all is directly with ClO
2Add in corresponding dilute juice, mixing juice or the infiltration water, dilute juice, mixing juice or infiltration water flow and the pumping process in will and ClO
2Mix fully and react, thereby reach the purpose of oxidative decoloration.
Claims (8)
1. one kind is destroyed oxidasic method in the sugarcane juice, it is characterized in that: this method is in the extraction of the juice stage of sugaring process, with ClO
2Add to respectively or simultaneously in each squeezing machine expressed sugarcane juice of extraction of the juice stage or intend sending in the infiltration water of last squeezing machine, the oxydase in the sugarcane juice is destroyed.
2. oxidasic method in a kind of destruction sugarcane juice according to claim 1 is characterized in that: this method is in the extraction of the juice stage of sugaring process, with ClO
2Add to and intend delivering to rare sugarcane juice of N platform squeezing machine after N+1 platform squeezing machine squeezes out, the span of N is: N is any one number in 2,3,4,5,6,7,8 or 9.
3. oxidasic method in a kind of destruction sugarcane juice according to claim 1 is characterized in that: this method is in the extraction of the juice stage of sugaring process, with ClO
2Add in the mixing juice oxydase that mixes in the sugarcane juice is destroyed; Described mixing sugarcane juice is meant that the sugarcane juice of squeezing out from first squeezing machine mixes the mixing sugarcane juice that forms with the sugarcane juice of squeezing out from second squeezing machine by behind the song sieve.
4. oxidasic method in a kind of destruction sugarcane juice according to claim 1 is characterized in that: this method is in the extraction of the juice stage of sugaring process, with ClO
2Adding to and intend sending into last---in the infiltration water of M platform squeezing machine, this is mixed with ClO
2Infiltration water flow and the pumping process in will and ClO
2Mix and enter dilute juice through each squeezing machine entering at last in the mixing sugarcane juice fully, the oxydase in the sugarcane juice is destroyed, the span of described M is: M is any one number in 2,3,4,5,6,7,8,9 or 10.
5. according to oxidasic method in claim 2 or the 3 described a kind of destruction sugarcane juices, it is characterized in that: join and squeeze out the back from N+1 platform squeezing machine and intend delivering to rare sugarcane juice of N platform squeezing machine or join the ClO that mixes in the sugarcane juice
2Consumption is 0.0005%～0.3% weight of raw material sugarcane weight, and the span of N is: N is any one number in 2,3,4,5,6,7,8 or 9.
6. oxidasic method in a kind of destruction sugarcane juice according to claim 4 is characterized in that: join and intend sending into last---the ClO in the infiltration water of M platform squeezing machine
2Consumption is 0.0005%～0.3% weight of the weight of raw material sugarcane weight, and the span of described M is: N is any one number in 1,2,3,4,5,6,7,8,9 or 10.
7, oxidasic method in a kind of destruction sugarcane juice according to claim 1 is characterized in that: in the sugaring process extraction of the juice stage, adopt ClO
2Oxydase in the sugarcane juice is destroyed, and is with ClO
2Add dilute juice, mixing juice and plan simultaneously respectively to and send into last---in the infiltration water of M platform squeezing machine; Or add in dilute juice, the mixing juice simultaneously respectively; Or add dilute juice simultaneously respectively to, intend sending into last---in the infiltration water of M platform squeezing machine; Or add mixing juice simultaneously respectively to, intend sending into last---in the infiltration water of M platform squeezing machine; Described dilute juice is meant the dilute juice that is back to N platform squeezing machine from N+1 platform squeezing machine, described mixing juice is meant from the squeeze out sugarcane juice that comes of first squeezing machine and mixes the mixing sugarcane juice of formation by the sugarcane juice behind the song sieve with squeezing out from second squeezing machine that the span of above-mentioned M is: 2, any one in 3,4,5,6,7,8,9 or 10 is several; The span of N is: 2, the number of any one in 3,4,5,6,7,8 or 9.
8, oxidasic method in a kind of destruction sugarcane juice according to claim 7 is characterized in that: add dilute juice, mixing juice and plan simultaneously respectively to and send into last---the ClO in the infiltration water of M platform squeezing machine
2Consumption is 0.0005%～0.2% weight of this batch raw material sugarcane gross weight, and its total consumption must not be greater than 0.5% weight of this batch raw material sugarcane weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100734226A CN101481745B (en) | 2008-01-09 | 2008-01-09 | Method for damaging oxidase in cane juice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100734226A CN101481745B (en) | 2008-01-09 | 2008-01-09 | Method for damaging oxidase in cane juice |
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| Publication Number | Publication Date |
|---|---|
| CN101481745A true CN101481745A (en) | 2009-07-15 |
| CN101481745B CN101481745B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100734226A Expired - Fee Related CN101481745B (en) | 2008-01-09 | 2008-01-09 | Method for damaging oxidase in cane juice |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571976A (en) * | 2013-11-12 | 2014-02-12 | 广西科技大学 | Method for reducing clear juice color value in sugar-making process by sulfurous method |
| WO2016090213A1 (en) * | 2014-12-05 | 2016-06-09 | E. I. Du Pont De Nemours And Company | Method of desulphitation of carbohydrates |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1023327C (en) * | 1989-06-21 | 1993-12-29 | 中国科学院广州化学研究所 | Fructose glucose syrup made by sucrose with cation resin hydrolyzing |
| CN1115294C (en) * | 1998-03-27 | 2003-07-23 | 黄君礼 | Chlorine dioxide generating method and apparatus |
| CN1308248C (en) * | 2002-12-12 | 2007-04-04 | 天津华特环保技术开发有限公司 | Composite ClO2 generating process |
-
2008
- 2008-01-09 CN CN2008100734226A patent/CN101481745B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571976A (en) * | 2013-11-12 | 2014-02-12 | 广西科技大学 | Method for reducing clear juice color value in sugar-making process by sulfurous method |
| WO2016090213A1 (en) * | 2014-12-05 | 2016-06-09 | E. I. Du Pont De Nemours And Company | Method of desulphitation of carbohydrates |
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| CN101481745B (en) | 2011-08-31 |
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