CN101130888A - Method for degumming jute by using complex enzyme - Google Patents
Method for degumming jute by using complex enzyme Download PDFInfo
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- CN101130888A CN101130888A CNA2007101225888A CN200710122588A CN101130888A CN 101130888 A CN101130888 A CN 101130888A CN A2007101225888 A CNA2007101225888 A CN A2007101225888A CN 200710122588 A CN200710122588 A CN 200710122588A CN 101130888 A CN101130888 A CN 101130888A
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Abstract
The present invention relates to a method for degumming jute by using composite enzyme. The described composite enzyme includes pectase and laccose, and said method includes the following steps: making pectase and laccase into composite enzyme aqueous solution, impregnating jute with said composite enzyme aqueous solution, the weight ratio of the described composite enzyme aqueous solution and jute is 12:1-40:1, regulating pH value of said composite enzyme aqueous solution to 5.0-5.5, heating to make temperature be higher than 60deg.C and lower than or equal to 65deg.C, retaining for 20-120min, then regulating pH value of said solution to 7.5-9.5, retaining for 20-120min at 40deg.C-70deg.C, finally, making the jute after which is treated by composite enzyme undergo the process of enzyme deactivation treatment.
Description
Technical field
The present invention relates to a kind of jute degumming method, particularly relate to the method that a kind of applying composite enzyme comes unstuck to jute.
Background technology
Because flax fibre has sucting wet air permeability, low static behaviour and good antibacterial characteristics preferably, crudefiber crop fabric clothing lining more and more is subjected to people's favor.The lining of existing crudefiber crop fabric clothing is meant that mainly flax, ramie raw materials or this type of raw material and other fiber carry out blending/interweave as cotton, wool, chemical fibre, silk etc. and make, but, make that the crudefiber crop textiles does not have to be more widely used because flax, ramie price are higher.And jute is the second-biggest-in-the-world cellulose fibre that is only second to cotton, and it is cheap, and compares with flax, ramie and to have better hygroscopicity and drapability, and antibacterial ability is only second to hemp, has huge using value and potentiality to be exploited.But because the content of lignin in the jute is higher, higher several times than flax, to use common Degumming method and tossa is come unstuck, removes lignin be difficult to obtain desirable effect, this has restricted the application of jute aspect garment material greatly." Tianjin University of Technology's journal " August the 24th in 2005, the influence that cellulase, hemicellulase, lignoenzyme and pectin depolymerase are handled tossa studied in volume the 4th phase " enzyme is handled a tossa Effect on Performance " literary composition, what but this article was mainly studied is to utilize above-mentioned various enzyme separately tossa to be handled respectively, even wherein mentioning complex enzyme handles, also only be to utilize laccase and hemicellulase compound with cellulase respectively, facts have proved that this article disclosed method is unsatisfactory to the effect that tossa comes unstuck, removes lignin.Chinese patent literature CN1232691C discloses the method that a kind of applying composite enzyme comes unstuck to jute, this method with the complex enzyme of pectase and laccase to the tossa processing of coming unstuck, the tossa of gained through with other fiber as cotton, chemical fibre blending or interweave and can satisfy the requirement of garment material substantially.But above-mentioned patent documentation disclosed method is desirable not enough to the removal of lignin impurity in the tossa, clearance only is about 76%, the content of lignin is still higher in the tossa of gained, and mechanical performances such as the intensity of resulting tossa, elongation at break and physical property are unsatisfactory, therefore need with other fiber as cotton, chemical fibre blending or interweave, the quality of the garment material that makes is still waiting further raising.
Summary of the invention
For this reason, the method that provides a kind of applying composite enzyme that jute is come unstuck is provided technical problem to be solved by this invention, and this method can effectively be removed pectin and the lignin impurity in the tossa, obtains the good tossa of combination property.
For solving the problems of the technologies described above, technical scheme of the present invention is: the method that a kind of applying composite enzyme comes unstuck to jute, and described complex enzyme comprises pectase and laccase, may further comprise the steps:
A. will jute be flooded by the complex enzyme aqueous solution that pectase and laccase are mixed with, the weight ratio of the described complex enzyme aqueous solution and jute is 12: 1-40: 1;
B. adjusting described complex enzyme pH value of aqueous solution is 5.0-5.5, and is warming up to and is higher than 60 ℃ and be less than or equal to 65 ℃, keeps 20-120 minute;
C. the pH value of adjusting solution then is 7.5-9.5, keeps 20-120 minute under 40 ℃-70 ℃ temperature;
D. the jute after handling through described complex enzyme being carried out enzyme deactivation handles.
Said method also is included in described steps d and carries out the step that synergy is banked up and handled before.
Said method, described synergy time of handling of banking up is 6-24 hour.
Said method, the enzyme deactivation in the described steps d are treated to the high temperature washing or regulate the pH value and carry out enzyme deactivation processing, perhaps both combinations.
Said method, the weight ratio of pectase is 30-90% in the described complex enzyme.
Said method, the weight ratio of described complex enzyme and jute are 0.5: 100-5: 100.
Said method, the temperature of water is more than 75 ℃ when carrying out the washing of described high temperature; PH value when adjusting pH value is carried out the enzyme deactivation processing is more than 10.0 or less than 4.0.
Said method also is included in described step a and before jute is carried out pretreated step.
Said method, described preliminary treatment are one or more the combination in water-bath, acid bath or the hydrogen peroxide dipping.The temperature of described water-bath is 30 ℃ to 100 ℃; Use sulfuric acid or acetic acid during described acid bath.
Characteristics and content at pectin in the jute and lignin self, for under the situation that guarantees effectively to remove pectin and lignin in the tossa, can obtain to have better intensity, the tossa of mechanical performances such as elongation at break and physical property, jute complex enzyme degumming method of the present invention, chosen the technological parameter that is complementary, especially in the active higher pH scope of laccase, select higher holding temperature, suitably control the activity of laccase, promptly in laccase activity higher pH scope, the temperature of adjusting composite enzyme solution is higher than 60 ℃, to reduce infringement to fiber, and other each parameter is adjusted in cooperation, make that Degumming method of the present invention can obtain to have better intensity under the situation that guarantees effectively to remove pectin and lignin in the tossa, the tossa of mechanical performances such as elongation at break and physical property.
Compared with prior art, technical scheme of the present invention has the following advantages: (1) method of the present invention adopts complex enzyme to the tossa processing of coming unstuck, and before carrying out the high temperature washing or regulate the processing of pH value inactivation, the jute after complex enzyme is handled carries out the synergy processing of banking up, can remove pectin and lignin in the tossa effectively, its pectin clearance is about 90%, reach as high as 96%, lignin removing rate reaches more than 78%, reach as high as 86%, the tossa after the coming unstuck of acquisition has higher spinnability.(2) simultaneously in laccase activity higher pH scope, the temperature of adjusting composite enzyme solution is higher than 60 ℃, to reduce infringement to fiber, and other each parameter is adjusted in cooperation, make under the situation that guarantees effectively to remove pectin and lignin in the tossa, Degumming method of the present invention can obtain to have better intensity, (TENSILE STRENGTH can improve more than 2 times the tossa of combination properties such as mechanical performances such as elongation at break and physical property, reach 6-9dN/tex, elongation at break can improve more than 1.5 times, can reach about 5-8%), the length and the fineness of its flax fibre are complementary, thereby improve spinnability; (3) method of the present invention had been carried out preliminary treatment before to the jute complex enzyme degumming, jute has been played expanded preferably effect, to weaken the associating power between filament, be more conducive to enzyme liquid and contact with the direct of flax fibre, can better remove pectin and lignin in the tossa.
The specific embodiment
Embodiment 1
To unpack by the jute that market is buied, be divided into the wisp one by one that is about about 0.5 kilogram; And carry out the water-bath preliminary treatment, and the temperature of water-bath is 65 ℃, temperature retention time is 2 hours;
Pectase and laccase were mixed with complex enzyme by weight 3: 7, press with jute and got the complex enzyme that configures, and be diluted with water to 12 times of jute weight, jute is flooded with the complex enzyme aqueous solution after the dilution by weight 0.5: 100;
The pH value of regulating dilution back solution with acetic acid and sodium bicarbonate is 5.5, is warming up to 61 ℃, keeps 20 minutes; PH value with the sodium bicarbonate regulator solution is 7.5 then, keeps 20 minutes at 45 ℃;
Then jute is taken out from solution and bank up carrying out the synergy processing of banking up, synergy time of handling of banking up is 24 hours;
To carry out hot water with 80 ℃ hot water and clean through bank up jute after handling of synergy, to carry out the enzyme deactivation processing, promptly obtain come unstuck after tossa, the clearance of pectin and lignin is as shown in table 1 in the tossa after resulting the coming unstuck.
Tossa after above-mentioned the coming unstuck is carried out bleaching, strikes the tossa product that can obtain having better spinning property after fiber crops are handled, clean, dewater, dry by prior art.
Embodiment 2
To unpack by the jute that market is buied, be divided into the wisp one by one that is about about 0.5 kilogram; And carry out acid bath and water-bath preliminary treatment, and used acid is that concentration is the concentrated sulfuric acid more than 90%, and the temperature of water-bath is 30 ℃, and temperature retention time is 1 hour;
Pectase and laccase were mixed with complex enzyme by weight 9: 1, press with jute and got the complex enzyme that configures, and be diluted with water to 40 times of jute weight, jute is flooded with the complex enzyme aqueous solution after the dilution by weight 5: 100;
The pH value of regulating dilution back solution with acetic acid and sodium bicarbonate is 5.0, is warming up to 62 ℃, keeps 120 minutes; PH value with the sodium bicarbonate regulator solution is 9.5 then, keeps 40 minutes at 65 ℃;
Then jute is taken out from solution and bank up carrying out the synergy processing of banking up, synergy time of handling of banking up is 6 hours;
To carry out hot water with 95 ℃ hot water and clean through bank up jute after handling of synergy, to carry out the enzyme deactivation processing, promptly obtain come unstuck after tossa, the clearance of pectin and lignin is as shown in table 1 in the tossa after resulting the coming unstuck.
Tossa after above-mentioned the coming unstuck is carried out bleaching, strikes the tossa product that can obtain having better spinning property after fiber crops are handled, clean, dewater, dry by prior art.
Embodiment 3
To unpack by the jute that market is buied, be divided into the wisp one by one that is about about 0.5 kilogram; And jute carried out the acid bath preliminary treatment, used acid is that concentration is the acetic acid more than 90%.
Pectase and laccase were mixed with complex enzyme by weight 1: 1, press with jute and got the complex enzyme that configures, and be diluted with water to 15 times of jute weight, jute is flooded with the complex enzyme aqueous solution after the dilution by weight 1: 100;
The pH value of regulating dilution back solution with acetic acid and sodium bicarbonate is 5.5, is warming up to 61 ℃, keeps 40 minutes; PH value with the sodium bicarbonate regulator solution is 8.5 then, keeps 50 minutes at 50 ℃;
Then jute being taken out from solution banks up carries out the synergy processing of banking up, and synergy time of handling of banking up is 10 hours;
To carry out hot water with 85 ℃ hot water and clean through bank up jute after handling of synergy, to carry out the enzyme deactivation processing, promptly obtain come unstuck after tossa, the clearance of pectin and lignin is as shown in table 1 in the tossa after resulting the coming unstuck.
Tossa after above-mentioned the coming unstuck is carried out bleaching, strikes the tossa product that can obtain having better spinning property after fiber crops are handled, clean, dewater, dry by prior art.
Embodiment 4
To unpack by the jute that market is buied, be divided into the wisp one by one that is about about 0.5 kilogram; And carry out the hydrogen peroxide dipping preliminary treatment, the concentration of used hydrogen peroxide is 5g/L;
Pectase and laccase were mixed with complex enzyme by weight 3: 1, press with jute and got the complex enzyme that configures, and be diluted with water to 30 times of jute weight, jute is flooded with the complex enzyme aqueous solution after the dilution by weight 2: 100;
The pH value of regulating dilution back solution with acetic acid and sodium bicarbonate is 5.0, is warming up to 63 ℃, keeps 50 minutes;
PH value with the sodium bicarbonate regulator solution is 9.0 then, keeps 90 minutes at 60 ℃;
Then jute being taken out from solution banks up carries out the synergy processing of banking up, and synergy time of handling of banking up is 15 hours;
To carry out hot water with 90 ℃ hot water and clean through bank up jute after handling of synergy, to carry out the enzyme deactivation processing, promptly obtain come unstuck after tossa, the clearance of pectin and lignin is as shown in table 1 in the tossa after resulting the coming unstuck.
Tossa after above-mentioned the coming unstuck is carried out bleaching, strikes the tossa product that can obtain having better spinning property after fiber crops are handled, clean, dewater, dry by prior art.
Embodiment 5
To unpack by the jute that market is buied, be divided into the wisp one by one that is about about 0.5 kilogram; And carry out the water-bath preliminary treatment, and the temperature of described water-bath is 100 ℃, temperature retention time is half an hour;
Pectase and laccase were mixed with complex enzyme by weight 5: 1, press with jute and got the complex enzyme that configures, and be diluted with water to 20 times of jute weight, jute is flooded with the complex enzyme aqueous solution after the dilution by weight 3: 100;
The pH value of regulating dilution back solution with acetic acid and sodium bicarbonate is 5.3, is warming up to 65 ℃, keeps 60 minutes;
PH value with the sodium bicarbonate regulator solution is 8.5 then, is warming up to 55 ℃, keeps 70 minutes;
Then jute being taken out from solution banks up carries out the synergy processing of banking up, and synergy time of handling of banking up is 20 hours;
The jute that to bank up after handling through synergy is that 11.0 the aqueous solution cleans with pH value, to carry out the enzyme deactivation processing, promptly obtain come unstuck after tossa, the clearance of pectin and lignin is as shown in table 1 in the tossa after resulting the coming unstuck.Therefrom as can be seen, the effect of using technical scheme among this embodiment is one of optimum.
Tossa after above-mentioned the coming unstuck is carried out bleaching, strikes the tossa product that can obtain having better spinning property after fiber crops are handled, clean, dewater, dry by prior art.
Embodiment 6
To unpack by the jute that market is buied, be divided into the wisp one by one that is about about 0.5 kilogram;
Pectase and laccase were mixed with complex enzyme by weight 4: 1, press with jute and got the complex enzyme that configures, and be diluted with water to 16 times of jute weight, jute is flooded with the complex enzyme aqueous solution after the dilution by weight 4: 100;
The pH value of regulating dilution back solution with acetic acid and sodium bicarbonate is 5.2, is warming up to 64 ℃, keeps 70 minutes;
PH value with the sodium bicarbonate regulator solution is 9.0 then, is warming up to 40 ℃ and keeps 80 minutes;
Then jute being taken out from solution banks up carries out the synergy processing of banking up, and synergy time of handling of banking up is 12 hours;
The jute that to bank up after handling through synergy is that 3.0 the aqueous solution cleans with pH value, to carry out the enzyme deactivation processing, promptly obtain come unstuck after tossa, the clearance of pectin and lignin is as shown in table 1 in the tossa after resulting the coming unstuck.Therefrom as can be seen, the effect of using technical scheme among this embodiment is one of optimum.
Tossa after above-mentioned the coming unstuck is carried out bleaching, strikes the tossa product that can obtain having better spinning property after fiber crops are handled, clean, dewater, dry by prior art.
Embodiment 7
To unpack by the jute that market is buied, be divided into the wisp one by one that is about about 0.5 kilogram;
Pectase and laccase were mixed with complex enzyme by weight 2: 3, press with jute and got the complex enzyme that configures, and be diluted with water to 13 times of jute weight, jute is flooded with the complex enzyme aqueous solution after the dilution by weight 1: 100;
The pH value of regulating dilution back solution with acetic acid and sodium bicarbonate is 5.1, is warming up to 61 ℃, keeps 80 minutes;
PH value with the sodium bicarbonate regulator solution is 8.0 then, is warming up to 65 ℃ and keeps 100 minutes;
Then jute being taken out from solution banks up carries out the synergy processing of banking up, and synergy time of handling of banking up is 8 hours;
To carry out hot water with 85 ℃ hot water and clean through bank up jute after handling of synergy, to carry out the enzyme deactivation processing, promptly obtain come unstuck after tossa, the clearance of pectin and lignin is as shown in table 1 in the tossa after resulting the coming unstuck.
Tossa after above-mentioned the coming unstuck is carried out bleaching, strikes the tossa product that can obtain having better spinning property after fiber crops are handled, clean, dewater, dry by prior art.
Embodiment 8
To unpack by the jute that market is buied, be divided into the wisp one by one that is about about 0.5 kilogram;
Pectase and laccase were mixed with complex enzyme by weight 3: 1, press with jute and got the complex enzyme that configures, and be diluted with water to 13 times of jute weight, jute is flooded with the complex enzyme aqueous solution after the dilution by weight 2: 100;
The pH value of regulating dilution back solution with acetic acid and sodium bicarbonate is 5.4, is warming up to 63 ℃, keeps 90 minutes; PH value with the sodium bicarbonate regulator solution is 7.8 then, keeps 110 minutes at 70 ℃;
Then jute is taken out from solution and with the pH value be 10.0, temperature is that 75 ℃ hot water cleans, handle to carry out enzyme deactivation, promptly obtain come unstuck after tossa, the clearance of pectin and lignin is as shown in table 1 in the tossa after resulting the coming unstuck.
Tossa after above-mentioned the coming unstuck is carried out bleaching, strikes the tossa product that can obtain having better spinning property after fiber crops are handled, clean, dewater, dry by prior art.
Embodiment 9
To unpack by the jute that market is buied, be divided into the wisp one by one that is about about 0.5 kilogram;
Pectase and laccase were mixed with complex enzyme by weight 2: 1, press with jute and got the complex enzyme that configures, and be diluted with water to 16 times of jute weight, jute is flooded with the complex enzyme aqueous solution after the dilution by weight 1: 100;
The pH value of regulating dilution back solution with acetic acid and sodium bicarbonate is 5.5, is warming up to 62 ℃, keeps 100 minutes; PH value with the sodium bicarbonate regulator solution is 9.3 then, keeps 120 minutes at 55 ℃;
Then jute is taken out from solution and with the pH value be 3.5, temperature is that 85 ℃ hot water cleans, handle to carry out enzyme deactivation, promptly obtain come unstuck after tossa, the clearance of pectin and lignin is as shown in table 1 in the tossa after resulting the coming unstuck.
Tossa after above-mentioned the coming unstuck is carried out bleaching, strikes the tossa product that can obtain having better spinning property after fiber crops are handled, clean, dewater, dry by prior art.
Pectase and laccase used in the foregoing description are respectively pectase (Bioprep) and the laccase of being produced by Denmark Novozymes Company (Denilite).
Table 1 has provided among each embodiment the clearance of pectin and lignin in the tossa after resulting the coming unstuck.
Table 1
| Embodiment | |||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |
| The pectin clearance | 88％ | 96％ | 90％ | 92％ | 96％ | 95％ | 91％ | 88％ | 89％ |
| Lignin removing rate | 79％ | 80％ | 79％ | 79％ | 84％ | 86％ | 82％ | 81％ | 78％ |
Obviously, the foregoing description only is the example that provides for clearly illustrating, they are not to be limitation of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change must fall into protection scope of the present invention.
Claims (10)
1. method that applying composite enzyme comes unstuck to jute, described complex enzyme comprises pectase and laccase, it is characterized in that, may further comprise the steps:
A. will jute be flooded by the complex enzyme aqueous solution that pectase and laccase are mixed with, the weight ratio of the described complex enzyme aqueous solution and jute is 12: 1-40: 1;
B. adjusting described complex enzyme pH value of aqueous solution is 5.0-5.5, and is warming up to and is higher than 60 ℃ and be less than or equal to 65 ℃, keeps 20-120 minute;
C. the pH value of adjusting solution then is 7.5-9.5, keeps 20-120 minute under 40 ℃-70 ℃ temperature;
D. the jute after handling through described complex enzyme being carried out enzyme deactivation handles.
2. method according to claim 1 is characterized in that, also is included in described steps d and carries out the step that synergy is banked up and handled before.
3. method according to claim 2 is characterized in that, described synergy time of handling of banking up is 6-24 hour.
4. according to each described method among the claim 1-3, it is characterized in that the enzyme deactivation in the described steps d is treated to the high temperature washing or regulates the pH value and carry out enzyme deactivation processing, perhaps both combinations.
5. according to each described method among the claim 1-3, it is characterized in that the weight ratio of pectase is 30-90% in the described complex enzyme.
6. according to each described method among the claim 1-3, it is characterized in that the weight ratio of described complex enzyme and jute is 0.5: 100-5: 100.
7. method according to claim 4 is characterized in that, the temperature of water is more than 75 ℃ when carrying out the washing of described high temperature; PH value when adjusting pH value is carried out the enzyme deactivation processing is more than 10.0 or less than 4.0.
8. according to each described method among the claim 1-3, it is characterized in that, also be included in described step a and before jute carried out pretreated step.
9. method according to claim 8 is characterized in that, described preliminary treatment is one or more the combination in water-bath, acid bath or the hydrogen peroxide dipping.
10. method according to claim 9 is characterized in that, the temperature of described water-bath is 30 ℃ to 100 ℃; Use sulfuric acid or acetic acid during described acid bath.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101225888A CN101130888A (en) | 2007-09-27 | 2007-09-27 | Method for degumming jute by using complex enzyme |
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| CNA2007101225888A CN101130888A (en) | 2007-09-27 | 2007-09-27 | Method for degumming jute by using complex enzyme |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009049484A1 (en) * | 2007-09-27 | 2009-04-23 | Jiangsu Redbud Textile Technology Co., Ltd. | Method of using composite enzyme for degumming jute (2) |
| WO2009049485A1 (en) * | 2007-09-27 | 2009-04-23 | Jiangsu Redbud Textile Technology Co., Ltd. | Method of using composite enzyme for degumming jute (3) |
| WO2009049483A1 (en) * | 2007-09-27 | 2009-04-23 | Jiangsu Redbud Textile Technology Co., Ltd. | Method of using composite enzyme for degumming jute (1) |
| CN102758378A (en) * | 2011-04-28 | 2012-10-31 | 徐奎元 | Method for transforming and recycling old cotton |
-
2007
- 2007-09-27 CN CNA2007101225888A patent/CN101130888A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009049484A1 (en) * | 2007-09-27 | 2009-04-23 | Jiangsu Redbud Textile Technology Co., Ltd. | Method of using composite enzyme for degumming jute (2) |
| WO2009049485A1 (en) * | 2007-09-27 | 2009-04-23 | Jiangsu Redbud Textile Technology Co., Ltd. | Method of using composite enzyme for degumming jute (3) |
| WO2009049483A1 (en) * | 2007-09-27 | 2009-04-23 | Jiangsu Redbud Textile Technology Co., Ltd. | Method of using composite enzyme for degumming jute (1) |
| US8268127B2 (en) | 2007-09-27 | 2012-09-18 | Jiangsu Redbud Textile Technology Co., Ltd. | Method of degumming jute fibres with complex enzyme |
| CN102758378A (en) * | 2011-04-28 | 2012-10-31 | 徐奎元 | Method for transforming and recycling old cotton |
| CN102758378B (en) * | 2011-04-28 | 2015-09-09 | 徐奎元 | A kind of method of old cotton transformation regeneration |
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Open date: 20080227 |