CN101130894B - Method for degumming jute by using complex enzyme - Google Patents

Method for degumming jute by using complex enzyme Download PDF

Info

Publication number
CN101130894B
CN101130894B CN2007101225981A CN200710122598A CN101130894B CN 101130894 B CN101130894 B CN 101130894B CN 2007101225981 A CN2007101225981 A CN 2007101225981A CN 200710122598 A CN200710122598 A CN 200710122598A CN 101130894 B CN101130894 B CN 101130894B
Authority
CN
China
Prior art keywords
jute
complex enzyme
tossa
value
enzyme
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN2007101225981A
Other languages
Chinese (zh)
Other versions
CN101130894A (en
Inventor
刘国忠
张振华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Redbud Textile Technology Co Ltd
Original Assignee
Jiangsu Redbud Textile Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Redbud Textile Technology Co Ltd filed Critical Jiangsu Redbud Textile Technology Co Ltd
Priority to CN2007101225981A priority Critical patent/CN101130894B/en
Publication of CN101130894A publication Critical patent/CN101130894A/en
Priority to JP2010526133A priority patent/JP2010540785A/en
Priority to US12/680,455 priority patent/US8268127B2/en
Priority to CA2700896A priority patent/CA2700896A1/en
Priority to PCT/CN2008/001660 priority patent/WO2009049485A1/en
Priority to EP08800652A priority patent/EP2194172A4/en
Priority to MX2010003347A priority patent/MX2010003347A/en
Priority to KR1020107006718A priority patent/KR20100080773A/en
Application granted granted Critical
Publication of CN101130894B publication Critical patent/CN101130894B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The present invention relates to a method for degumming jute by using composite enzyme. The described composite enzyme includes pectase and laccase, and said method includes the following steps: impregnating jute with composite enzyme aqueous solution prepared by using pectase and laccase, the weight ratio of said composite enzyme aqueous solution and jute is 12:1-40:1, regulating the pH value of described composite enzyme aqueous solution to 5.0-5.5, heating to make temperature be higher than 35deg.C and lower than 55deg.C, retaining for 20-120min, the regulating the 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

The method that applying composite enzyme comes unstuck to jute
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 higher (can reach 10-13%) in the jute is higher several times than flax, uses 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, 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.
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 kept 20-120 minute under 40 ℃-70 ℃ temperature greater than 8.0 and smaller or equal to 9.5;
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, jute complex enzyme degumming method of the present invention, chosen the technological parameter that is complementary, especially require at the activity of pectase that (pectase activity when the pH8.0-9.0 is the highest, in the pH value less than 8.0 or greater than 9.0 o'clock, the activity of laccase reduces gradually), the pH value of adjusting enzyme solutions is greater than 8.0, and other each parameter is adjusted in cooperation, make pectase can bring into play best degumming effect, thereby Degumming method of the present invention can obtain tossa with better spinnability than prior art.
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, chosen the technological parameter that is complementary, especially the activity at pectase requires (laccase activity when pH8.0-9.0 is the highest), the pH value of adjusting enzyme solutions is greater than 8.0, and other each parameter is adjusted in cooperation, make pectase can bring into play best degumming effect, 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%, reaches as high as 86%, and the tossa after the coming unstuck of acquisition has higher spinnability; (2) 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 8.5 then, keeps 20 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 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 9.5 then, keeps 40 minutes at 55 ℃;
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 5.5, is warming up to 55 ℃, 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 5 g/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 5.0, is warming up to 59 ℃, keeps 50 minutes;
PH value with the sodium bicarbonate regulator solution is 9.0 then, is warming up to 60 ℃ 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 5.1, is warming up to 60 ℃, keeps 60 minutes;
PH value with the sodium bicarbonate regulator solution is 8.5 then, is warming up to 45 ℃, 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 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 5.2, is warming up to 58 ℃, keeps 70 minutes;
PH value with the sodium bicarbonate regulator solution is 9.0 then, is warming up to 40 ℃ 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 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 5.3, is warming up to 57 ℃, keeps 80 minutes;
PH value with the sodium bicarbonate regulator solution is 8.3 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 56 ℃, keeps 90 minutes;
PH value with the sodium bicarbonate regulator solution is 8.1 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 55 ℃, keeps 100 minutes;
PH value with the sodium bicarbonate regulator solution is 8.2 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 80 ℃ 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
Figure 2007101225981A00800091
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 (1)

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 be mixed with complex enzyme by weight 4: 1 by pectase and laccase, and press with jute and got the complex enzyme that configures, and be diluted with water to 14 times of jute weight, jute be flooded with the complex enzyme aqueous solution after the dilution by weight 4: 100;
B. adjusting described complex enzyme pH value of aqueous solution with acetic acid and sodium bicarbonate is 5.2, and is warming up to 58 ℃, keeps 70 minutes;
C. the pH value of adjusting solution with sodium bicarbonate then is 9.0, and maintenance is 90 minutes under 40 ℃ temperature;
D. 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.
CN2007101225981A 2007-09-27 2007-09-27 Method for degumming jute by using complex enzyme Active CN101130894B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CN2007101225981A CN101130894B (en) 2007-09-27 2007-09-27 Method for degumming jute by using complex enzyme
PCT/CN2008/001660 WO2009049485A1 (en) 2007-09-27 2008-09-26 Method of using composite enzyme for degumming jute (3)
US12/680,455 US8268127B2 (en) 2007-09-27 2008-09-26 Method of degumming jute fibres with complex enzyme
CA2700896A CA2700896A1 (en) 2007-09-27 2008-09-26 Method of using composite enzyme for degumming jute (3)
JP2010526133A JP2010540785A (en) 2007-09-27 2008-09-26 Degumming method of jute using complex enzyme (3)
EP08800652A EP2194172A4 (en) 2007-09-27 2008-09-26 Method of using composite enzyme for degumming jute (3)
MX2010003347A MX2010003347A (en) 2007-09-27 2008-09-26 Method of using composite enzyme for degumming jute (1).
KR1020107006718A KR20100080773A (en) 2007-09-27 2008-09-26 Method of using composite enzyme for degumming jute(3)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2007101225981A CN101130894B (en) 2007-09-27 2007-09-27 Method for degumming jute by using complex enzyme

Publications (2)

Publication Number Publication Date
CN101130894A CN101130894A (en) 2008-02-27
CN101130894B true CN101130894B (en) 2010-12-08

Family

ID=39128299

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2007101225981A Active CN101130894B (en) 2007-09-27 2007-09-27 Method for degumming jute by using complex enzyme

Country Status (1)

Country Link
CN (1) CN101130894B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2700793A1 (en) * 2007-09-27 2009-04-23 Jiangsu Redbud Textile Technology Co., Ltd. Method of using composite enzyme for degumming jute (2)
JP2010540783A (en) * 2007-09-27 2010-12-24 チャンス レッドバッド テキスタイル テクノロジー カンパニー リミテッド Degumming of jute using complex enzyme (1)
MX2010003347A (en) * 2007-09-27 2011-06-03 Jiangsu Redbud Textile Tech Co Method of using composite enzyme for degumming jute (1).
CN103243540B (en) * 2013-05-25 2015-04-29 上海秋橙新材料科技有限公司 Bio-enzyme pretreatment method of ramie fabric
CN106661824B (en) * 2014-07-31 2020-04-14 爱贝克思集团控股公司 Method for producing spinning fibrilia and spinning fibrilia

Also Published As

Publication number Publication date
CN101130894A (en) 2008-02-27

Similar Documents

Publication Publication Date Title
CN102086533B (en) Pretreatment process of jute or red ramie
CN101130894B (en) Method for degumming jute by using complex enzyme
CN101187068B (en) Japanese banana fiber and its preparation method and uses
CN101130887A (en) Method for degumming jute by using complex enzyme
CN103898616B (en) A kind of sisal hemp degumming technique
CN101187066B (en) Method for degelatinizing jute applying composite enzyme
CN100560818C (en) The method that applying composite enzyme comes unstuck to jute
CN100560819C (en) The method that applying composite enzyme comes unstuck to jute
CN100560821C (en) The method that applying composite enzyme comes unstuck to jute
CN100560820C (en) The method that applying composite enzyme comes unstuck to jute
CN100560817C (en) The method that applying composite enzyme comes unstuck to jute
CN100560816C (en) The method that applying composite enzyme comes unstuck to jute
CN100575569C (en) The method that applying composite enzyme comes unstuck to jute
CN101130888A (en) Method for degumming jute by using complex enzyme
CN101130889A (en) Method for degumming jute by using complex enzyme
CN100575571C (en) The method that applying composite enzyme comes unstuck to jute
CN100575570C (en) The method that applying composite enzyme comes unstuck to jute
CN101126177A (en) Enzymatic degumming method for jute or ambari hemp
CN101122050A (en) Enzymatic degumming method for jute or ambari hemp
WO2009049483A1 (en) Method of using composite enzyme for degumming jute (1)
US8268127B2 (en) Method of degumming jute fibres with complex enzyme
CN102517647A (en) Method for chemically degumming jute fiber by using biological enzyme
CN102560693A (en) Method for chemical degumming of jute fiber using compound enzyme
CN100575568C (en) Jute or gombo hemp complex enzyme degumming method
WO2009049484A1 (en) Method of using composite enzyme for degumming jute (2)

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Method for degumming jute by using complex enzyme

Effective date of registration: 20141230

Granted publication date: 20101208

Pledgee: Industrial Commercial Bank of China Ltd. Changshu branch

Pledgor: JIANGSU REDBUD TEXTILE TECHNOLOGY Co.,Ltd.

Registration number: 2014320010004

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PP01 Preservation of patent right

Effective date of registration: 20171130

Granted publication date: 20101208

PP01 Preservation of patent right
PD01 Discharge of preservation of patent

Date of cancellation: 20201130

Granted publication date: 20101208

PD01 Discharge of preservation of patent
PP01 Preservation of patent right

Effective date of registration: 20201130

Granted publication date: 20101208

PP01 Preservation of patent right
PD01 Discharge of preservation of patent

Date of cancellation: 20231130

Granted publication date: 20101208

PD01 Discharge of preservation of patent