CN100560819C - The method that applying composite enzyme comes unstuck to jute - Google Patents
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- CN100560819C CN100560819C CNB2007101225873A CN200710122587A CN100560819C CN 100560819 C CN100560819 C CN 100560819C CN B2007101225873 A CNB2007101225873 A CN B2007101225873A CN 200710122587 A CN200710122587 A CN 200710122587A CN 100560819 C CN100560819 C CN 100560819C
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- 235000011777 Corchorus aestuans Nutrition 0.000 title claims abstract description 84
- 235000010862 Corchorus capsularis Nutrition 0.000 title claims abstract description 84
- 108090000790 Enzymes Proteins 0.000 title claims abstract description 84
- 102000004190 Enzymes Human genes 0.000 title claims abstract description 84
- 240000000491 Corchorus aestuans Species 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000002131 composite material Substances 0.000 title claims abstract description 11
- 239000000243 solution Substances 0.000 claims abstract description 32
- 239000007864 aqueous solution Substances 0.000 claims abstract description 20
- 238000010792 warming Methods 0.000 claims abstract description 20
- 108010029541 Laccase Proteins 0.000 claims abstract description 19
- 230000009849 deactivation Effects 0.000 claims abstract description 18
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 36
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 3
- 229920005610 lignin Polymers 0.000 abstract description 24
- 240000004792 Corchorus capsularis Species 0.000 abstract 1
- 229940088598 enzyme Drugs 0.000 description 63
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 239000000835 fiber Substances 0.000 description 20
- 238000010790 dilution Methods 0.000 description 18
- 239000012895 dilution Substances 0.000 description 18
- 239000001814 pectin Substances 0.000 description 18
- 229920001277 pectin Polymers 0.000 description 18
- 235000010987 pectin Nutrition 0.000 description 18
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 18
- 235000017557 sodium bicarbonate Nutrition 0.000 description 18
- 238000004061 bleaching Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 230000001105 regulatory effect Effects 0.000 description 9
- 238000009987 spinning Methods 0.000 description 9
- 241000208202 Linaceae Species 0.000 description 7
- 235000004431 Linum usitatissimum Nutrition 0.000 description 7
- 229920000742 Cotton Polymers 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 240000008564 Boehmeria nivea Species 0.000 description 3
- 108010059820 Polygalacturonase Proteins 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 108010059892 Cellulase Proteins 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 229940106157 cellulase Drugs 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 108010093305 exopolygalacturonase Proteins 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229940059442 hemicellulase Drugs 0.000 description 2
- 108010002430 hemicellulase Proteins 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The method that a kind of applying composite enzyme comes unstuck to jute, described complex enzyme comprises pectase and laccase, may further comprise the steps: 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; Adjusting described complex enzyme pH value of aqueous solution is 5.0-5.5, and is warming up to 55 ℃-60 ℃, keeps 20-120 minute; The pH value of adjusting solution then is 7.5-8.0, keeps 20-120 minute under 40 ℃-59 ℃ temperature; Jute after handling through described complex enzyme is carried out enzyme deactivation handles.The method step that applying composite enzyme of the present invention comes unstuck to jute is simple, the removal lignin is effective.
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 55 ℃-60 ℃, keeps 20-120 minute;
C. the pH value of adjusting solution then is 7.5-8.0, keeps 20-120 minute under 40 ℃-59 ℃ 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 pectase, select lower holding temperature, suitably control the activity of pectase, promptly in pectinase activity higher pH scope, the temperature of adjusting composite enzyme solution is lower 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 pectinase activity higher pH scope, the temperature of adjusting composite enzyme solution is lower 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 55 ℃, keeps 20 minutes; PH value with the sodium bicarbonate regulator solution is 7.5 then, is warming up to 40 ℃, keeps 20 minutes;
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 60 ℃, keeps 120 minutes;
PH value with the sodium bicarbonate regulator solution is 7.5 then, is warming up to 55 ℃, keeps 40 minutes;
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 20 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 5.0, is warming up to 55 ℃, keeps 40 minutes;
PH value with the sodium bicarbonate regulator solution is 8.0 then, is warming up to 50 ℃, keeps 50 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 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 2: 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 5.3, is warming up to 58 ℃, keeps 50 minutes;
PH value with the sodium bicarbonate regulator solution is 7.8 then, is warming up to 59 ℃ 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 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 12 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 5.0, is warming up to 55 ℃, keeps 60 minutes;
PH value with the sodium bicarbonate regulator solution is 7.7 then, is warming up to 40 ℃, 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 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 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 14 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 5.0, is warming up to 60 ℃, keeps 70 minutes;
PH value with the sodium bicarbonate regulator solution is 8.0 then, is warming up to 45 ℃ and keeps 90 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 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 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 5.2, is warming up to 57 ℃, keeps 80 minutes; PH value with the sodium bicarbonate regulator solution is 8.0 then, is warming up to 55 ℃ 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 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 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 5.0, is warming up to 58 ℃, keeps 90 minutes; PH value with the sodium bicarbonate regulator solution is 7.8 then, keeps 110 minutes at 40 ℃;
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 5.4, is warming up to 56 ℃, keeps 100 minutes; PH value with the sodium bicarbonate regulator solution is 7.6 then, is warming up to 55 ℃ and keeps 120 minutes;
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
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 (8)
1, a kind of applying composite enzyme method that jute is come unstuck, 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 pectase is 30-90% in the described complex enzyme, the weight ratio of described complex enzyme and jute is 0.5: 100-5: 100, and the weight ratio of the described complex enzyme aqueous solution and jute is 14: 1;
B. adjusting described complex enzyme pH value of aqueous solution is 5.0, and is warming up to 60 ℃, keeps 70 minutes;
C. the pH value of adjusting solution then is 8.0, keeps 90 minutes under 45 ℃ 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.
According to each described method among the claim 1-3, it is characterized in that 4, 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, method according to claim 4 is characterized in that, the pH value when adjusting pH value is carried out the enzyme deactivation processing is more than 10.0 or less than 4.0.
6, 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.
7, method according to claim 6 is characterized in that, described preliminary treatment is one or more the combination in water-bath, acid bath or the hydrogen peroxide dipping.
8, method according to claim 7 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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| CA2700896A1 (en) | 2007-09-27 | 2009-04-23 | Jiangsu Redbud Textile Technology Co., Ltd. | Method of using composite enzyme for degumming jute (3) |
| EP2194170A4 (en) * | 2007-09-27 | 2011-01-05 | Jiangsu Redbud Textile Tech Co | Method of using composite enzyme for degumming jute (1) |
| KR20100066523A (en) * | 2007-09-27 | 2010-06-17 | 지안수 레드버드 텍스타일 테크놀로지 코퍼레이션, 리미티드. | Method of using composite enzyme for degumming jute(2) |
| CN102560693A (en) * | 2011-11-28 | 2012-07-11 | 江苏紫荆花纺织科技股份有限公司 | Method for chemical degumming of jute fiber using compound enzyme |
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