CN109735517A - Using the method for immobilization horse antibody extraction purification lipase - Google Patents

Using the method for immobilization horse antibody extraction purification lipase Download PDF

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CN109735517A
CN109735517A CN201910183987.8A CN201910183987A CN109735517A CN 109735517 A CN109735517 A CN 109735517A CN 201910183987 A CN201910183987 A CN 201910183987A CN 109735517 A CN109735517 A CN 109735517A
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lipase
immobilization
horse
column
purification
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廖承勇
王晨宇
张小利
王盼冉
赵国芬
尹俊
王新国
娜日苏
劲松
王秀丽
海永胜
于瑞
王勇
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INNER MONGOLIA BOGE FARMING ANIMAL HUSBANDRY DEVELOPMENT Co Ltd
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INNER MONGOLIA BOGE FARMING ANIMAL HUSBANDRY DEVELOPMENT Co Ltd
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Abstract

The invention discloses a kind of methods using immobilization horse antibody extraction purification lipase to obtain fermentation liquid comprising steps of the pseudomonad of yielding lipase is used to ferment for fermenting microbe;Fermentation liquid is centrifuged, supernatant is collected, obtains lipase crude enzyme liquid;By immobilization horse antibody column on lipase crude enzyme liquid, column is washed with cleaning solution later, then using disodium hydrogen phosphate-citrate buffer solution elution, collect eluent, obtain lipase after purification;Polyethylene glycol is added in lipase after purification, precipitates lipase;It is centrifuged later, collects precipitating;Drying will be precipitated, obtains lipase.The present invention utilizes antigen-antibody specific bond extraction purification lipase, impurity can be effectively removed, high specificity, gained lipase is with high purity, high-quality, high income, loss of activity are few, it can also be purified when lipase concentration is lower, and production cost is low, is a kind of efficient lipase method for extraction and purification.

Description

Using the method for immobilization horse antibody extraction purification lipase
Technical field
The present invention relates to field of biotechnology, and in particular to a kind of side using immobilization horse antibody extraction purification lipase Method.
Background technique
Lipase, that is, Lipase, it be catalyzed natural substrate grease hydrolysis, generate fatty acid, glycerol and Monoglyceride or diester.Lipase basic composition unit is only amino acid, usually only a polypeptide chain.Its catalytic activity is only Only it is decided by its protein structure.Lipase is a kind of enzyme with a variety of catalytic capabilities, can be catalyzed triglyceride and Hydrolysis, alcoholysis, esterification, the reaction of transesterification and esters reverse reaction of some other water-insoluble esters, in addition to this go back table Reveal the activity of some other enzyme, such as phosphatidase, lysophospholipase, cholesterol esterase, acylpetide hydrolase activity.Lipase is not With active the characteristics of playing dependent on reaction system, such as promote ester hydrolysis in oil-water interfaces, and can be with enzymatic in organic phase Synthesis and transesterification.
Lipase widely exists in animals and plants and microorganism.What fatty enzyme was more is the kind of oil crops in plant Son, such as castor bean, rapeseed, when oilseed germination, lipase can cooperate with to play a role with other enzymes is catalytically decomposed oil Lipid material generates carbohydrate, provides nutriment and energy necessary to seed roots;Animal body include lipase it is more be The pancreas and adipose tissue of higher mammal contain a small amount of lipase, for supplementing pancreatic lipase to fat digestion in intestinal juice Deficiency, in the gastric juice of carnivore contain a small amount of tributyrinase.In animal body, each quasi-lipase, which controls, disappears Change, absorb, fat is rebuild and the processes such as lipoprotein metabolism;Lipase content more horn of plenty in bacterium, fungi and yeast.Due to Microbe species are more, breeding is fast, Yi Fasheng hereditary variation, have action pH more wider array of than animals and plants, operative temperature range and Substratspezifitaet, and microbe-derived lipase is typically all the ectoenzyme of secretory, main fermentative microorganism has black song Mould, Candida etc. is suitable for industrialized production and obtains high-purity sample, therefore microbial lipase is technical tallow The important sources of fat enzyme.However, the microbial fermentation and extraction purification technology of existing lipase are still immature, product exists Purity is low, if foreign protein is more, to obtain the product of purity is high, the problems such as but bringing complex process at high cost.
Summary of the invention
For the defects in the prior art, the present invention provides a kind of side using immobilization horse antibody extraction purification lipase Method can effectively remove impurity, gained lipase purity is high, matter to utilize antigen-antibody specific bond extraction purification lipase It measures, high income, it can also be purified when lipase concentration is lower, and production cost is low.
To achieve the above object, the present invention provides a kind of method using immobilization horse antibody extraction purification lipase, Comprising steps of S1: using the pseudomonad of yielding lipase to ferment for fermenting microbe, obtain fermentation liquid;S2: by fermentation liquid from The heart collects supernatant, obtains lipase crude enzyme liquid;S3: by immobilization horse antibody column on lipase crude enzyme liquid, cleaning solution is used later Column is washed, then the disodium hydrogen phosphate used-citrate buffer solution elution, collects eluent, obtain lipase after purification;S4: Polyethylene glycol is added in lipase after purification, precipitates lipase;It is centrifuged later, collects precipitating;It will be lyophilized after precipitating dialysis It is dry, obtain lipase.It should be noted that after collecting lipase precipitating, the phosphoric acid buffer for the 0.1M for being preferably 7.2 with pH value Liquid is dialysed, then is lyophilized.
S1 specifically includes step: the single bacterium colony of the pseudomonad of yielding lipase being placed in shake flask culture, in 20-30 DEG C, cultivate 16-20h under the conditions of 200-300rpm, be then transferred in fermentation culture by 10% inoculum concentration, 20-29 DEG C, 60-70h is cultivated under the conditions of 200-300rpm, obtains the fermentation liquid.
It preferably, include: yeast extract 5g, peptone 5g, vegetable oil 10g, surplus in every liter of shake flask culture in S1 For water;PH value is 7.0.
Preferably, in S1, include: yeast extract 10g in every liter of fermentation culture, peptone 5g, NaCl 0.5g, plant Object oil 10g, surplus are water;PH value is 7.0.
In S2, centrifugation is to be centrifuged 14-16min under the conditions of 4 DEG C, 10000-11000g using high speed freezing centrifuge.
In S3, the preparation method of immobilization horse antibody column carries out 10-16 comprising steps of horse is immunized every two weeks primary altogether Immune, each 2mL in week, dosage are respectively the Freund's complete adjuvant that 3-21mg lipase adds equivalent, multiple spot subcutaneous inoculation, ELISA detection antibody titer collects antiserum after being greater than 1:10000;Antiserum is centrifuged off cell component and other precipitatings Object uses proteinA or proteinG affinity column to be purified into polyclonal antibody after collecting supernatant;By polyclonal antibody It is connect with the Sepharose2B of activation or Sepharose4B, obtains immobilization horse antibody column.
Preferably, in S3, the weight of horse is 210-370 kilograms, and the age of horse is 2-12 years old, and the kind of horse is Mongolian horse.
In S3, disodium hydrogen phosphate-potassium phosphate buffer that cleaning solution is the 0.1M that pH value is 7.2;Eluent is 0.1M disodium hydrogen phosphate-citrate buffer solution pH value is 3.
It further include that pH value is used to clean column to neutrality for disodium hydrogen phosphate-potassium phosphate buffer of 8 1M in S3 Step.Preferably, the buffer can be used to adjust eluent to pH value as 7.0.Explanation need to be used, this can make affinity column Recycling, and keep lipase active.
In S4, centrifugation is to be centrifuged 5-10min under the conditions of 4 DEG C, 3000-5000g.
Technical solution provided by the invention, with following the utility model has the advantages that (1) is provided by the invention anti-using immobilization horse The method of body extraction purification lipase can effectively remove impurity using antigen-antibody specific bond extraction purification lipase, special Anisotropic strong, gained lipase is with high purity, high-quality, high income, activity height, can also carry out to it when lipase concentration is lower Purification, it is high-efficient;It is monitored by antibody titer, selects high titre to resist for making affinity column more, lipase is effectively ensured Yield and purity;(2) method provided by the invention using immobilization horse antibody extraction purification lipase, simple production process, Production cost is low;Be easy to get polyclonal antibody, immune affinity chromatographic column can Reusability, discharge of wastewater and ring can be effectively reduced Border pollution, is a kind of efficient lipase extracting method.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description Obviously, or practice through the invention is recognized.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described.Implement below Example is only used for clearly illustrating technical solution of the present invention, therefore is intended only as example, and cannot be used as a limitation and limit this hair Bright protection scope.
Experimental method in following embodiments is unless otherwise specified conventional method.Examination as used in the following examples Material is tested, is to be commercially available from routine biochemistry reagent shop unless otherwise specified.Quantitative test in following embodiment, Three repeated experiments are respectively provided with, data are the average value or mean+SD of three repeated experiments.The vacation that the present invention uses Monad is aeruginosa atcc 21808.
The present invention provides a kind of method using immobilization horse antibody extraction purification lipase, comprising steps of
S1: the single bacterium colony of the aeruginosa atcc 21808 of yielding lipase is placed in equipped with 25mL shake flask culture In 250mL shaking flask, 16-20h is cultivated under the conditions of 20-30 DEG C, 200-300rpm, is then transferred to fermentation training by 10% inoculum concentration In nutrient solution, 60-70h is cultivated under the conditions of 20-29 DEG C, 200-300rpm, obtains fermentation liquid;Wherein, in every liter of shake flask culture It include: yeast extract 5g, peptone 5g, vegetable oil 10g, surplus is water;PH value is 7.0;Include: in every liter of fermentation culture Yeast extract 10g, peptone 5g, NaCl 0.5g, vegetable oil 10g, surplus is water;PH value is 7.0;
S2: fermentation liquid is centrifuged, and is collected supernatant, is obtained lipase crude enzyme liquid;Wherein, centrifugation be using high speed freeze from Scheming is centrifuged 14-16min under the conditions of 4 DEG C, 10000-11000g;
S3: by immobilization horse antibody column on lipase crude enzyme liquid, during upper prop, the lipase active of efflux is detected, directly To there is lipase active outflow, stop upper liquid;The disodium hydrogen phosphate for the 0.1M for being later 7.2 with pH value-potassium dihydrogen phosphate buffering Liquid washes column, then uses pH value for 3 0.1M disodium hydrogen phosphate-citrate buffer solution elution, collects eluent, obtains after purification Lipase;And after enzyme outflow, the disodium hydrogen phosphate-potassium phosphate buffer for the 1M for being immediately 8 with pH value washes column into Property, also with solution tune eluent to pH value to 7;Wherein, the preparation method of immobilization horse antibody column is comprising steps of select 4 weights Amount is immunized once every two weeks in the 210-370 kilograms of age 2-12 years old Mongolian horse, carries out 10-16 weeks immune, each 2mL altogether, Dosage is respectively the Freund's complete adjuvant that 3-21mg lipase adds equivalent, multiple spot subcutaneous inoculation, and ELISA detection antibody titer is greater than Antiserum is collected after 1:10000;Antiserum is centrifuged off cell component and other sediments, is used after collecting supernatant ProteinA or proteinG affinity column is purified into polyclonal antibody;By the Sepharose2B of polyclonal antibody and activation Or Sepharose4B connection, obtain immobilization horse antibody column;
S4: polyethylene glycol is added in lipase after purification, precipitates lipase;It is centrifuged later, collects precipitating;It will sink Form sediment lyophilization after dialysing, and obtains lipase;Wherein, centrifugation is to be centrifuged 5-10min under the conditions of 4 DEG C, 3000-5000g.
Combined with specific embodiments below to the method provided by the invention using immobilization horse antibody extraction purification lipase It is described further.
Embodiment 1
The present embodiment provides a kind of methods using immobilization horse antibody extraction purification lipase, comprising steps of
S1: the single bacterium colony of the aeruginosa atcc 21808 of yielding lipase is placed in equipped with 25mL shake flask culture In 250mL shaking flask, 20h is cultivated under the conditions of 28 DEG C, 200rpm, is then transferred in fermentation culture by 10% inoculum concentration, 28 DEG C, cultivate 68h under the conditions of 200rpm, obtain fermentation liquid;It wherein, include: yeast extract 5g, egg in every liter of shake flask culture White peptone 5g, vegetable oil 10g, surplus are water;PH value is 7.0;It include: yeast extract 10g, peptone in every liter of fermentation culture 5g, NaCl 0.5g, vegetable oil 10g, surplus are water;PH value is 7.0;
S2: fermentation liquid is centrifuged, and is collected supernatant, is obtained lipase crude enzyme liquid;Wherein, centrifugation be using high speed freeze from Scheming is centrifuged 15min under the conditions of 4 DEG C, 10800g;
S3: by immobilization horse antibody column on lipase crude enzyme liquid, during upper prop, the lipase active of efflux is detected, directly To there is lipase active outflow, stop upper liquid;The disodium hydrogen phosphate for the 0.1M for being later 7.2 with pH value-potassium dihydrogen phosphate buffering Liquid washes column, then uses pH value for 3 0.1M disodium hydrogen phosphate-citrate buffer solution elution, collects eluent, obtains after purification Lipase;And after enzyme outflow, the disodium hydrogen phosphate-potassium phosphate buffer for the 1M for being immediately 8 with pH value washes column into Property, also with solution tune eluent to pH value to 7;Wherein, the preparation method of immobilization horse antibody column is comprising steps of select 4 illiteracies (weight and corresponding age are respectively as follows: that weight is 240 kilograms and the age is 3 years old, weight is 290 kilograms and the age is 5 for ancient horse Year, weight is 320 kilograms and the age is 7 years old, weight is 360 kilograms and the age is 10 years old), primary, progress altogether is immunized every two weeks 12 weeks immune, each 2mL, dosage are respectively the Freund's complete adjuvant that 15mg lipase adds equivalent, multiple spot subcutaneous inoculation, ELISA detection antibody titer collects antiserum after being greater than 1:10000;Antiserum is centrifuged off cell component and other precipitatings Object uses proteinA or proteinG affinity column to be purified into polyclonal antibody after collecting supernatant;By polyclonal antibody It is connect with the Sepharose2B of activation, obtains immobilization horse antibody column;
S4: polyethylene glycol is added in lipase after purification, precipitates lipase;It is centrifuged later, collects precipitating;It will sink Form sediment lyophilization after dialysing, and obtains lipase, enzyme activity reaches ten thousand units/gram of 15-25 after measured;Wherein, centrifugation is in 4 DEG C, 000g Under the conditions of be centrifuged 8min.
Embodiment 2
The present embodiment provides a kind of methods using immobilization horse antibody extraction purification lipase, comprising steps of
S1: the single bacterium colony of the aeruginosa atcc 21808 of yielding lipase is placed in equipped with 25mL shake flask culture In 250mL shaking flask, 16h is cultivated under the conditions of 28 DEG C, 200rpm, is then transferred in fermentation culture by 10% inoculum concentration, 28 DEG C, cultivate 60h under the conditions of 200rpm, obtain fermentation liquid;It wherein, include: yeast extract 5g, egg in every liter of shake flask culture White peptone 5g, vegetable oil 10g, surplus are water;PH value is 7.0;It include: yeast extract 10g, peptone in every liter of fermentation culture 5g, NaCl 0.5g, vegetable oil 10g, surplus are water;PH value is 7.0;
S2: fermentation liquid is centrifuged, and is collected supernatant, is obtained lipase crude enzyme liquid;Wherein, centrifugation be using high speed freeze from Scheming is centrifuged 14min under the conditions of 4 DEG C, 10000g;
S3: by immobilization horse antibody column on lipase crude enzyme liquid, during upper prop, the lipase active of efflux is detected, directly To there is lipase active outflow, stop upper liquid;The disodium hydrogen phosphate for the 0.1M for being later 7.2 with pH value-potassium dihydrogen phosphate buffering Liquid washes column, then uses pH value for 3 0.1M disodium hydrogen phosphate-citrate buffer solution elution, collects eluent, obtains after purification Lipase;And after enzyme outflow, the disodium hydrogen phosphate-potassium phosphate buffer for the 1M for being immediately 8 with pH value washes column into Property, also with solution tune eluent to pH value to 7;Wherein, the preparation method of immobilization horse antibody column is comprising steps of select 4 illiteracies (weight and corresponding age are respectively as follows: that weight is 220 kilograms and the age is 2 years old, weight is 270 kilograms and the age is 4 for ancient horse Year, weight is 330 kilograms and the age is 8 years old, weight is 345 kilograms and the age is 9 years old), it is immunized once every two weeks, carries out 10 altogether Immune, each 2mL in week, dosage are respectively the Freund's complete adjuvant that 3mg lipase adds equivalent, multiple spot subcutaneous inoculation, ELISA inspection It surveys after antibody titer is greater than 1:10000 and collects antiserum;Antiserum is centrifuged off cell component and other sediments, in collection Polyclonal antibody is purified into using proteinA or proteinG affinity column after clear liquid;By polyclonal antibody and activation Sepharose2B connection obtains immobilization horse antibody column;
S4: polyethylene glycol is added in lipase after purification, precipitates lipase;It is centrifuged later, collects precipitating;It will sink Form sediment lyophilization after dialysing, and obtains lipase, enzyme activity reaches ten thousand units/gram of 15-25 after measured;Wherein, centrifugation is in 4 DEG C, 3000g Under the conditions of be centrifuged 5min.
Embodiment 3
The present embodiment provides a kind of methods using immobilization horse antibody extraction purification lipase, comprising steps of
S1: the single bacterium colony of the aeruginosa atcc 21808 of yielding lipase is placed in equipped with 25mL shake flask culture In 250mL shaking flask, 18h is cultivated under the conditions of 30 DEG C, 300rpm, is then transferred in fermentation culture by 10% inoculum concentration, 29 DEG C, cultivate 70h under the conditions of 300rpm, obtain fermentation liquid;It wherein, include: yeast extract 5g, egg in every liter of shake flask culture White peptone 5g, vegetable oil 10g, surplus are water;PH value is 7.0;It include: yeast extract 10g, peptone in every liter of fermentation culture 5g, NaCl 0.5g, vegetable oil 10g, surplus are water;PH value is 7.0;
S2: fermentation liquid is centrifuged, and is collected supernatant, is obtained lipase crude enzyme liquid;Wherein, centrifugation be using high speed freeze from Scheming is centrifuged 16min under the conditions of 4 DEG C, 11000g;
S3: by immobilization horse antibody column on lipase crude enzyme liquid, during upper prop, the lipase active of efflux is detected, directly To there is lipase active outflow, stop upper liquid;The disodium hydrogen phosphate for the 0.1M for being later 7.2 with pH value-potassium dihydrogen phosphate buffering Liquid washes column, then uses pH value for 3 0.1M disodium hydrogen phosphate-citrate buffer solution elution, collects eluent, obtains after purification Lipase;And after enzyme outflow, the disodium hydrogen phosphate-potassium phosphate buffer for the 1M for being immediately 8 with pH value washes column into Property, also with solution tune eluent to pH value to 7;Wherein, the preparation method of immobilization horse antibody column is comprising steps of select 4 illiteracies (weight and corresponding age are respectively as follows: that weight is 232 kilograms and the age is 3 years old, weight is 268 kilograms and the age is 6 for ancient horse Year, weight is 341 kilograms and the age is 9 years old, weight is 366 kilograms and the age is 11 years old) it is immunized once every two weeks, 10 are carried out altogether Week is immunized, and each 2mL, dosage is respectively the Freund's complete adjuvant that 21mg lipase adds equivalent, multiple spot subcutaneous inoculation, ELISA Detection antibody titer collects antiserum after being greater than 1:10000;Antiserum is centrifuged off cell component and other sediments, is collected Polyclonal antibody is purified into using proteinA or proteinG affinity column after supernatant;By polyclonal antibody and activation Sepharose4B connection obtains immobilization horse antibody column;
S4: polyethylene glycol is added in lipase after purification, precipitates lipase;It is centrifuged later, collects precipitating;It will sink Form sediment lyophilization after dialysing, and obtains lipase, enzyme activity reaches ten thousand units/gram of 15-25 after measured;Wherein, centrifugation is in 4 DEG C, 5000g Under the conditions of be centrifuged 10min.
Comparative example 1
This comparative example provides a kind of method using immobilization horse antibody extraction purification lipase, comprising steps of
S1: the single bacterium colony of the aeruginosa atcc 21808 of yielding lipase is placed in equipped with 25mL shake flask culture In 250mL shaking flask, 20h is cultivated under the conditions of 28 DEG C, 200rpm, is then transferred in fermentation culture by 10% inoculum concentration, 28 DEG C, cultivate 68h under the conditions of 200rpm, obtain fermentation liquid;It wherein, include: yeast extract 5g, egg in every liter of shake flask culture White peptone 5g, vegetable oil 10g, surplus are water;PH value is 7.0;It include: yeast extract 10g, peptone in every liter of fermentation culture 5g, NaCl 0.5g, vegetable oil 10g, surplus are water;PH value is 7.0;
S2: fermentation liquid is centrifuged, and is collected supernatant, is obtained lipase crude enzyme liquid;Wherein, centrifugation be using high speed freeze from Scheming is centrifuged 15min under the conditions of 4 DEG C, 10800g;
S3: by immobilization horse antibody column on lipase crude enzyme liquid, during upper prop, the lipase active of efflux is detected, directly To there is lipase active outflow, stop upper liquid;The disodium hydrogen phosphate for the 0.1M for being later 4.8 with pH value-potassium dihydrogen phosphate buffering Liquid washes column, then uses pH value for 4 0.1M disodium hydrogen phosphate-citrate buffer solution elution, collects eluent, obtains after purification Lipase;And after enzyme outflow, the disodium hydrogen phosphate-potassium phosphate buffer for the 1M for being immediately 8 with pH value washes column into Property, also with the solution tune eluent to pH to 7;Wherein, the preparation method of immobilization horse antibody column is comprising steps of select 4 Mongolia Horse (weight and corresponding age be respectively as follows: that weight is 240 kilograms and the age is 3 years old, weight is 290 kilograms and the age be 5 years old, Weight is 320 kilograms and the age is 7 years old, weight is 360 kilograms and the age is 10 years old), it is immunized once, carries out 8 weeks altogether every two weeks Immune, each 2mL, dosage is respectively the Freund's complete adjuvant that 15mg lipase adds equivalent, multiple spot subcutaneous inoculation, ELISA inspection It surveys after antibody titer is greater than 1:10000 and collects antiserum;Antiserum is centrifuged off cell component and other sediments, in collection Polyclonal antibody is purified into using proteinA affinity column after clear liquid;By the Sepharose2B of polyclonal antibody and activation Connection, obtains immobilization horse antibody column;
S4: polyethylene glycol is added in lipase after purification, precipitates lipase;It is centrifuged later, collects precipitating;It will sink Form sediment lyophilization after dialysing, and obtains lipase;Wherein, centrifugation is to be centrifuged 8min under the conditions of 4 DEG C, 4000g.
Comparative example 2
This comparative example provides a kind of method using immobilization horse antibody extraction purification lipase, comprising steps of
S1: the single bacterium colony of the aeruginosa atcc 21808 of yielding lipase is placed in equipped with 25mL shake flask culture In 250mL shaking flask, 20h is cultivated under the conditions of 28 DEG C, 200rpm, is then transferred in fermentation culture by 10% inoculum concentration, 28 DEG C, cultivate 68h under the conditions of 200rpm, obtain fermentation liquid;It wherein, include: yeast extract 5g, egg in every liter of shake flask culture White peptone 5g, vegetable oil 10g, surplus are water;PH value is 7.0;It include: yeast extract 10g, peptone in every liter of fermentation culture 5g, NaCl 0.5g, vegetable oil 10g, surplus are water;PH value is 7.0;
S2: fermentation liquid is centrifuged, and is collected supernatant, is obtained lipase crude enzyme liquid;Wherein, centrifugation be using high speed freeze from Scheming is centrifuged 15min under the conditions of 4 DEG C, 10800g;
S3: by immobilization horse antibody column on lipase crude enzyme liquid, during upper prop, the lipase active of efflux is detected, directly To there is lipase active outflow, stop upper liquid;The disodium hydrogen phosphate for the 0.1M for being later 7.2 with pH value-potassium dihydrogen phosphate buffering Liquid washes column, then uses pH value for 3 disodium hydrogen phosphate-citrate buffer solution elution, collects eluent, obtains fat after purification Enzyme;And after enzyme outflow, the disodium hydrogen phosphate-potassium phosphate buffer for the 1M for being immediately 8 with pH value washes column to neutrality, With the solution tune eluent to pH to 7;Wherein, the preparation method of immobilization horse antibody column is comprising steps of select 4 Mongolian horses (weight Amount and corresponding age are respectively as follows: that weight is 240 kilograms and the age is 3 years old, weight is 290 kilograms and the age is 5 years old, weight is 320 kilograms and the age is 7 years old, weight is 360 kilograms and the age is 10 years old), be immunized every two weeks primary, altogether carry out being immunized for 6 weeks, Each 2mL, dosage are respectively the Freund's complete adjuvant that 15mg lipase adds equivalent, multiple spot subcutaneous inoculation, ELISA detection antibody drop Degree collects antiserum after being greater than 1:10000;Antiserum is centrifuged off cell component and other sediments, is adopted after collecting supernatant Polyclonal antibody is purified into proteinA affinity column;By polyclonal antibody and the Sepharose2B of activation connection, obtain Immobilization horse antibody column;
S4: polyethylene glycol is added in lipase after purification, precipitates lipase;It is centrifuged later, collects precipitating;It will sink Form sediment lyophilization after dialysing, and obtains lipase;Wherein, centrifugation is to be centrifuged 8min under the conditions of 4 DEG C, 4000g.
Comparative example 3
This comparative example provides a kind of method of extraction purification lipase, comprising steps of
S1: the single bacterium colony of the aeruginosa atcc 21808 of yielding lipase is placed in equipped with 25mL shake flask culture In 250mL shaking flask, 20h is cultivated under the conditions of 28 DEG C, 200rpm, is then transferred in fermentation culture by 10% inoculum concentration, 28 DEG C, cultivate 68h under the conditions of 200rpm, obtain fermentation liquid;It wherein, include: yeast extract 5g, egg in every liter of shake flask culture White peptone 5g, vegetable oil 10g, surplus are water;PH value is 7.0;It include: yeast extract 10g, peptone in every liter of fermentation culture 5g, NaCl 0.5g, vegetable oil 10g, surplus are water;PH value is 7.0;
S2: fermentation liquid is centrifuged, and is collected supernatant, is obtained lipase crude enzyme liquid;Wherein, centrifugation be using high speed freeze from Scheming is centrifuged 15min under the conditions of 4 DEG C, 10800g;
S3: filling chromatographic column with Sephadexg-100 gel particle, with the neutral phosphate buffer for the 0.1M that pH value is 7 Liquid balances chromatographic column, and obtained lipase crude enzyme liquid is loaded on chromatographic column, is eluted with neutral phosphate buffer liquid, receives Collect eluent corresponding to Peak Activity, resulting eluent is concentrated by ultrafiltration, gel filtration crude enzyme liquid is obtained;
It is coupled on Sepharose4B using lipase inhibitor as ligand by covalent bond, is filled with Sepharose4B Affinity column is balanced chromatographic column with neutral phosphate buffer liquid, crude enzyme liquid is loaded on chromatographic column, is rinsed with deionized water Chromatographic column, then eluted with the citrate buffer solution of 0.1M pH4, eluent is collected, lipase after purification is obtained;
S4: polyethylene glycol is added in lipase after purification, precipitates lipase;It is centrifuged later, collects precipitating;It will sink Shallow lake drying, obtains lipase;Wherein, centrifugation is to be centrifuged 10min under the conditions of 4 DEG C, 6000g.
Using the method extraction purification lipase of the embodiment of the present invention 1 to embodiment 3, the purity of obtained lipase is received Rate, activity are as shown in table 1 below, and using the lipase that the method extraction purification using comparative example 1 to comparative example 3 obtains as pair According to.In table 1, the data of embodiment 1 are set as 1, other organize the ratio for 1 corresponding data of data and embodiment that other data are each group Value.
The lipase of 1 distinct methods extraction purification of table
Group Lipase purity Lipase yield Lipase active
Embodiment 1 1 1 1
Embodiment 2 98.6% 99.2% 99.6%
Embodiment 3 99.0% 99.4% 99.3%
Comparative example 1 92.5% 80.5% 90.3%
Comparative example 2 93.3% 85.3% 90.5%
Comparative example 3 60.7% 62.8% 70.7%
Unless otherwise indicated, technical term or scientific term used in this application should be fields technology of the present invention The ordinary meaning that personnel are understood.Unless specifically stated otherwise, the phase of the component and step that otherwise illustrate in these embodiments Step, numerical expression and numerical value are not limit the scope of the invention.In all examples being illustrated and described herein, unless It states otherwise, any occurrence should be construed as merely illustratively, not as limitation, therefore, exemplary embodiment Other examples can have different values.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the One ", the feature of " second " can explicitly or implicitly include one or more of the features.In the description of the present invention, The meaning of " plurality " is two or more, unless otherwise specifically defined.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into Row equivalent replacement;And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme should all cover within the scope of the claims and the description of the invention.

Claims (10)

1. a kind of method using immobilization horse antibody extraction purification lipase, which is characterized in that comprising steps of
S1: it uses the pseudomonad of yielding lipase to ferment for fermenting microbe, obtains fermentation liquid;
S2: the fermentation liquid is centrifuged, and is collected supernatant, is obtained lipase crude enzyme liquid;
S3: by immobilization horse antibody column on the lipase crude enzyme liquid, column is washed with cleaning solution later, then use disodium hydrogen phosphate- Citrate buffer solution elution, collects eluent, obtains lipase after purification;
S4: polyethylene glycol is added in the lipase after purification, precipitates lipase;It is centrifuged later, collects precipitating;By institute Lyophilization after precipitating is dialysed is stated, the lipase is obtained.
2. the method according to claim 1 using immobilization horse antibody extraction purification lipase, which is characterized in that
The S1 specifically includes step:
The single bacterium colony of the pseudomonad of yielding lipase is placed in shake flask culture, under the conditions of 20-30 DEG C, 200-300rpm 16-20h is cultivated, is then transferred in fermentation culture by 10% inoculum concentration, is cultivated under the conditions of 20-29 DEG C, 200-300rpm 60-70h obtains the fermentation liquid.
3. the method according to claim 2 using immobilization horse antibody extraction purification lipase, it is characterised in that:
It include: yeast extract 5g, peptone 5g, vegetable oil 10g in every liter of shake flask culture in the S1, surplus is Water;PH value is 7.0.
4. the method according to claim 2 using immobilization horse antibody extraction purification lipase, it is characterised in that:
It include: yeast extract 10g, peptone 5g, NaCl 0.5g, vegetable oil in every liter of fermentation culture in the S1 10g, surplus are water;PH value is 7.0.
5. the method according to claim 1 using immobilization horse antibody extraction purification lipase, it is characterised in that:
In the S2, the centrifugation is to be centrifuged 14- under the conditions of 4 DEG C, 10000-11000g using high speed freezing centrifuge 16min。
6. the method according to claim 1 using immobilization horse antibody extraction purification lipase, which is characterized in that
In the S3, the preparation method of the immobilization horse antibody column comprising steps of
Horse is immunized primary every two weeks, carries out being immunized for 10-16 week altogether, each 2mL, dosage is respectively that 3-21mg lipase adds The Freund's complete adjuvant of amount, multiple spot subcutaneous inoculation, ELISA detection antibody titer collect antiserum after being greater than 1:10000;
The antiserum is centrifuged off cell component and other sediments, collect after supernatant using proteinA or ProteinG affinity column is purified into polyclonal antibody;
By Sepharose2B or the Sepharose4B connection of the polyclonal antibody and activation, the immobilization horse antibody is obtained Column.
7. the method according to claim 6 using immobilization horse antibody extraction purification lipase, it is characterised in that:
In the S3, the weight of the horse is 210-370 kilograms, and the age of the horse is 2-12 years old, and the kind of the horse is to cover Ancient horse.
8. the method according to claim 1 using immobilization horse antibody extraction purification lipase, it is characterised in that:
In the S3, disodium hydrogen phosphate-potassium phosphate buffer that the cleaning solution is the 0.1M that pH value is 7.2;
The concentration of the disodium hydrogen phosphate-citrate buffer solution is 0.1M, pH value 3.
9. the method according to claim 1 using immobilization horse antibody extraction purification lipase, it is characterised in that:
It further include that pH value is used to clean after enzyme outflow for disodium hydrogen phosphate-potassium phosphate buffer of 8 1M in the S3 Column is to neutral step;Preferably, the pH value is used to elute for disodium hydrogen phosphate-potassium phosphate buffer tune of 8 1M Liquid is to pH value to 7.
10. the method according to claim 1 using immobilization horse antibody extraction purification lipase, it is characterised in that:
In the S4, the centrifugation is to be centrifuged 5-10min under the conditions of 4 DEG C, 3000-5000g.
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