CN1168637A - Biofilm avoidance and removal process and composition - Google Patents

Biofilm avoidance and removal process and composition Download PDF

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Publication number
CN1168637A
CN1168637A CN95196641A CN95196641A CN1168637A CN 1168637 A CN1168637 A CN 1168637A CN 95196641 A CN95196641 A CN 95196641A CN 95196641 A CN95196641 A CN 95196641A CN 1168637 A CN1168637 A CN 1168637A
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China
Prior art keywords
compositions
enzyme
water
ethylene glycol
protease
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CN95196641A
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Chinese (zh)
Inventor
M·艾尔斯
K·范比
J·范普勒
J·F·舒尔兹
A·P·申克
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BISIDERBOEN Co Ltd
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BISIDERBOEN Co Ltd
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Priority claimed from DE19944445070 external-priority patent/DE4445070A1/en
Application filed by BISIDERBOEN Co Ltd filed Critical BISIDERBOEN Co Ltd
Publication of CN1168637A publication Critical patent/CN1168637A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/342Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the enzymes used
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/50Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02Non-contaminated water, e.g. for industrial water supply
    • C02F2103/023Water in cooling circuits

Abstract

The present invention relates to the use of at least one enzyme component from the group consisting of carbohydrases, proteases, lipases and glycol proteases and a glycol component for the avoidance of slime formation and/or for the removal of biofilm on surfaces of water-bearing systems, in particular of industrial process-water systems. The enzyme components and the glycol component can be added to the water-bearing system either separately, i.e., at different points, or in the form of an enzymatic composition containing the enzyme components and the glycol component.

Description

Avoid and get rid of biomembranous method and composition
The present invention relates at the water bearing system, special in the water system of commercial processes, use at least a enzyme component and a kind of short chain ethylene glycol component, form mucosa so that avoid at water surface, and or get rid of at its surperficial biomembrane, wherein the enzyme component is selected from one group of enzyme such as carbohydrase, protease, lipase and ethylene glycol protease.Enzyme component and ethylene glycol component both can be added to the difference of water bearing system respectively, also can enzyme and the enzymatic compositions form of ethylene glycol add.
Commercial processes or operation water system, for example opening in paper mill or airtight water circulation system, particularly cooling water system provide the appropraite condition of growth of microorganism, and it is mucosa as a result, and on record biomembrane forms on water bearing system surface.At cooling water system, these biomembranous alluvials cause heat-exchange capacity to descend especially, damage the junction point and the corrosion whole system of conduit.In the case, the ill-effect that technical process is controlled may take place, and it may reduce the efficient of this commercial processes or the quality of infringement product.Add that the alluvial of biomembrane or mucosa generally causes higher energy expenditure.
What commercial processes was subjected to that growing biomembrane has the greatest impact is to resemble pulp mill, paper plant, paperboard mill and textile mills etc.With the paper machine is example, and very a large amount of water recycles (one-level or secondary circulation, i.e. plain boiled water I or II) (by different paper molds, paper per ton will be used the water up to about 100-1000m3) in the blood circulation that is referred to as " white-water system ".The plain boiled water that contains dispersive paper pulp becomes the desirable culture medium of growth of microorganism.
Biomembrane alluvial mainly is made up of antibacterial, gram-negative bacteria particularly, and for example pseudomonas, acinetobacter calcoaceticus, aerobe add flavobacterium, desulfovibrio, escherichia coli, bacillus cereus and sarcina.
The cell wall structure of gram-negative bacteria is one and especially mucosa is formed contributive factor.Cell wall is made up of Peptidoglycan, also adds an adventitia, and Peptidoglycan is made up of acetylamino sugars and aminoacid, and adventitia is made up of protein, lipopolysaccharide and lipoprotein.Otherwise the cell wall great majority of gram-positive bacteria are made up of Peptidoglycan and teichoic acid.
Microorganism is also along with the variation of the composition of film produces mucous layer or diaphragm widely.Remove a few exceptions, by bacteriogenic mucosa, its composition is a polysaccharide, for example dextran, glucosan and polyuronide.Volume by single bacteriogenic mucosa may be the manyfold of single antibacterial volume.
Biocide can be controlled the alluvial of bacterial slime most effectively, and the effectiveness of these biocides is to eliminate the microorganism in the operation water, and therefore prevents the growth of mucosa.Yet biocide has caused many doubts about ecological community, and because their toxicity causes very big danger when handling.Based on this reason, seek the biomembranous new way of elimination and carrying out in recent years always, especially concentrating on the enzyme aspect.
Though biomembranous matrix may have the out-phase structure, it mainly is made of polysaccharide.Therefore, the research in eliminating mucosa field has concentrated on the research of polysaccharide (carbohydrase) especially.Recent findings, protease are the effective means (EP-A-590746) of eliminating biomembrane or mucosa.Using maximum protease at present is alkaline protease, and it is derived from various Bacillus strains, and it has superior stability and have albumen (hydrolysis) enzymatic activity alkali.
U.S.4,684,469 technical processs of describing, wherein a kind of antimicrobial acivity of biocide can be strengthened by polysaccharide degrading enzyme.
U.S.4,936,994 mixture of describing a kind of cellulase, α-Dian Fenmei and a kind of protease can be used to get rid of biomembrane, have narrated the mixture that is used to get rid of mucosa in DE 3741583, and it consists of glucanase and protease.
Get rid of biomembranous technical process for one that is described among the WO92/13807, wherein use a kind of mixture, it contains at least a acidity or alkaline protease in forming, at least a glucoamylase or α-Dian Fenmei and at least a surfactant (being detergent (surfactant)), it destroys the polysaccharide material that is adhered to water bearing system surface microorganism periphery.
A current pure enzymatic mixture that uses or a common feature of enzymatic compositions are that they generally must combine with a kind of biocide, so that reach the necessary significant degree of practical application (consulting for example U.S.5,324,432).
Target of the present invention provides can be avoided forming mucosa and/or eliminating biomembranous compositions or the technical process on its surface on the surface in the water bearing system, and they can avoid the shortcoming of the biocide of routine, can reach its effective degree again.
According to the present invention, for reaching its target, in the water bearing system, add at least a enzyme component, it is selected from one group of enzyme and a kind of ethylene glycol component such as carbohydrase, protease, lipase and ethylene glycol protease, and its general formula is,
R 2(O-R 1) n-O-R 3N is the integer less than 10 in the formula, R 1Be the alkyl of 2 or 3 carbon atoms, R 2And R 3In various situations can be respectively H and alkyl or the aromatic radical that contains 1-6 carbon atom.
Alkyl in the above-mentioned ethylene glycol component can be the alkyl of straight chain and side chain.The concrete understanding of aromatic radical one speech is meant the group of 6-14 carbon atom, and it may contain alkyl substituent.Alkyl or aromatic radical R 1, R 2And R 3Identical or different in each case groups.
Within the scope of the invention, enzyme component and ethylene glycol component preferably are added in the water bearing system simultaneously.
According to the preferred embodiments of the present invention, adding the uniting of enzyme and ethylene glycol component is to carry out with the form of compositions, and said composition comprises at least a enzyme component, and it is selected from one group of enzyme such as carbohydrase, protease, lipase and ethylene glycol protease, with a kind of ethylene glycol component, its general formula is
R 2(O-R 1) n-O-R 3N in the formula, R 1, R 2And R 3Implication the same.
Preferred compositions of the present invention comprises the concentration range of ethylene glycol component, with respect to total composition, is 10-80wt%, and preferred concentration range is 20-60wt%.According to special preferred version of the present invention, the concentration range of ethylene glycol component is 20-40wt%.
According to the present invention, in the compositions content of enzyme 90 and 1wt% between, preferred content 90 and 20wt% between, 50-20wt% is most preferred (every kind of situation is corresponding to the weight of fluid composition) herein.Difference water with respect to compositions 100wt% is supplied.
Glucanase (α-and 1,4 beta-glucanase), fucosidase or pectase are the enzymes that the carbohydrase apoplexy due to endogenous wind is preferentially selected for use.Esperase (serine protease, Novo) or Neutrase (metalloproteases Novo) can be used as protease especially and considers to adopt Liponase (acetylesterase) is particularly suitable as a kind of lipase usefulness, and endo-glycosidase is the enzyme of preferentially selecting for use in the ethylene glycol protease.
Though above-mentioned a certain enzyme uses separately and is not enough to get rid of biomembrane, surprisingly, this enzyme and above-mentioned short chain ethylene glycol component join water bearing system or enzyme component and ethylene glycol component with the form of compositions and use (adding) will bring mucosa to cut down the remarkable improvement of ability simultaneously.The formation of neoplasm film also reduces widely.Even, make every process of jacking process water or the necessary enzyme amount of operation water greatly to reduce because suitable small number of groups compound can come into force.
From before article as can be known, when the pH value of water was neutrality, the remarkable increase of bacterial cell counting formed by mucosa again and causes that problem increases.Experience shows, this problem even also very difficult controlled at the use biocide.According to the present invention, problem can solve, even be neutral at the pH value of water, (add respectively or add) if above-mentioned enzyme component and ethylene glycol component join in the system, can avoid forming mucosa and also/maybe can get rid of its surperficial biomembrane on the surface of water bearing system with the enzymatic compositions form.
According to concrete preferred embodiment of the present invention, can make a kind of enzymatic compositions, it comprises 1,4 beta-glucanase and diethylene glycol, and wherein the diethylene glycol ratio is 10-80wt% with respect to total composition, and preferred is 20-60wt% to the ratio in total composition.In the particularly preferred compositions of the present invention, the 1,4 beta-glucanase ratio is 43wt%, and the diethylene glycol ratio is 25wt%, and the difference water of relative 100 wt% is supplied.
In the water bearing system, the degraded of surperficial mucosa also or prevents surperficial mucosa generation aspect, the surprising effectiveness of compositions performance of the present invention.According to the present invention, the water bearing system refers to the water system of special industry technical process water or operation, promptly open or closed-cycle system, for example cooling water recirculation system.Compositions of the present invention be particularly suitable for paper plant one-level, secondary and or the use of three grades of blood circulation (be plain boiled water I and II, waste water; Reference example Ullmanns Encyklopadieder technischen Chemie, 4tn Ed., Verlag Chemie, Weinheim, Volume 17, p.577 et seg.) these water systems are desirable culture mediums of microorganism, and the generation and the biomembranous alluvial of mucosa become subject matter therein.The trend that mucosa generates is maximum in Chalk water carrying blood circulation, and biomembranous insufficient eliminating causes paper quality to descend and the paper machine operation troubles, and the operating cost that causes therefrom increase.The fact shows that compositions of the present invention reaches surprising degree for the suitability of the elimination of these problems.
Compositions of the present invention is also brought into play its surprising effectiveness at other water bearing system, for example open or airtight water circulation system, cooling water and similar blood circulation.Because the degraded of mucosa or the result who avoids new mucosa to form, particularly corrosive trend greatly reduces, and the durability of water bearing system has been improved.
The present invention also relates at the water bearing system, particularly the commercial processes water system uses compositions of the present invention, so as to avoid surperficial mucosa formation and or get rid of its surface biological film, the amount that wherein joins the compositions of system is with respect to the volume of institute's treating water, 5-200ppm.
Compositions of the present invention is ecological acceptable, nontoxic and contain the enzyme purification ratio of component with known, and it has tangible efficient.For above-mentioned application, it is advantage as substituent traditional, deleterious biocide.
Enzyme has the pH value an of the best, and this activity for them is specific.For compositions of the present invention, according to the pH value of water bearing system, appropriate, best enzyme may be selected the composition of compositions of the present invention.
Now with following reference example explaination the present invention.
Embodiment
With the 43wt% 1,4 beta-glucanase, 25wt% diethylene glycol and 32wt% water mix, and become a kind of enzymatic compositions (enzyme prescription A).
This compositions is applied to two paper machine water circulation systems in the paper mill, gets rid of biomembrane, and avoids the regeneration of mucosa.The total capacity of paper machine is for producing about 180,000 tons of SC paper per year.The structural diagrams of paper machine water circulation system that is used for the advance copy inventive compositions has wherein been indicated the appropriate location that is metered into enzymatic compositions in Fig. 1.
Carry out the preparation of field trial
The installation of dispensing equipment
Field trial begin a few days ago, Grace Dearborn DCS3020 dispensing equipment installs.Select following feed entrance point (batching point): 1. according to EUR8830 of the present invention, compositions is added in the container at storage tank main tank place of paper machine PM1 (plain boiled water: the batching point refers to " SWI " among table 1 and Fig. 1).2. biocide formula I (containing 18wt%2,2-two bromo-3-nitrilo-propionic acid amide .s (DBNPA)) is imported storage tank denseness sensor " Debro " (the preparation point refers to " storage tank " in the table 1).3. the reject chute input (batching point refer to " refuse point (" broke ") " table 1) of biocide formula I I (containing 45wt% antiseptin-AS 2 and 2wt% dithiol) from being equipped with the denseness sensor.
Two " gamma/5 " pumps (ProMinent) are installed, are used to add biocide, and " Vario " pump (ProMinent), be used to add compositions of the present invention.Before compositions actual tests of the present invention begins, all pumps are proofreaied and correct.
Field trial
After all machines are cleaned up hill and dale, the beginning field trial.In 4 cycle periods being studied, dosage is listed in the table 1.
In first cycle period of lasting 9 days, compositions of the present invention joins (4 * 30 minutes every days, 1458 milliliters of per minutes) in the plain boiled water; Biocide joins (be parallel to prescription of the present invention 4 * 30 minutes every days, 60 milliliters of per minutes) in the storage tank, and joins (3 * 30 minutes every days, 75 milliliters of per minutes) in " refuse " groove.In second circulation that lasts 20 days, the batching of biocide approximately reduces to 50%, compositions of the present invention batching remain unchanged (4 * 30 minutes every days, 1458 milliliters of per minutes).In the 3rd circulation that lasts 9 days, compositions batching of the present invention reduces to 50% (4 * 30 minutes every days, 730 milliliters of per minutes).Following closely, the 4th circulation beginning does not add biocide (promptly not adding D7806) in short circulation, and the addition of filling a prescription by the present invention reduces about 68% (4 * 30 minutes every days, 500 milliliters of per minutes) again.So far, paper machine was handled 20 days with enzyme prescription A.A spot of biocide I is used for refuse anticorrosion (broke conservation), is not the part of plain boiled water.
Use the site test results of above-mentioned enzymatic compositions to be described below: 1. in storage tank and waste tank, the total amount of the plankton colony mixture of plain boiled water body all will be measured every day, and its measuring method is adenosine triphosphate acidity test (biometric scan) and total count of bacteria (accompany the Ti Shi film and soak sheet (dipslide)).(adenosine triphosphate is measured ultimate principle.When fluorescein and luciferase existed, adenosine triphosphate changed adenylic acid into, in all cases, and a certain amount of light of each adenosine triphosphate molecular emission, the sensitive photometer measurement of light intensity).Measurement result in plain boiled water is illustrated among Fig. 2-8.Bacterial cell counting or " relative light unit " (rlu) are not worth less than significant increase.These figure show the activation of microorganism of exemplary systems, and its demonstration does not exist and relates to the problem that mucosa generates, i.e. the growth of mucosa is suppressed effectively.2. machine is often checked, sees if there is mucosa and forms the problem relevant with existence.At duration of test, in paper machine, do not observe the problem that causes by microorganism.There is not situation about paper machine must cut out because mucosa forms.3. the quality of paper is also carried out similar continuous monitoring.The black speck of paper and the statistical distribution of hole, before compositions of the present invention adds, among and all be detected afterwards.Measurement result shows, with the mass ratio of the paper that uses biocide, there is not marked difference (referring to Fig. 9 and Figure 10) in the paper of making aspect black speck and the number of pores now.4. through after the trimestral successful field trial, paper machine changes neutral operation into.The monitoring of paper machine is as (limit of seing before) as described in the front.
The fact shows, even in pH neutral, the adding of enzymatic compositions has prevented because mucosa or biological film formed problem occur.
Paper machine is stabilized monitoring and does not observe the biomembrane alluvial.Machine looks and cleans very much, and even also shuts down because of microorganism problem when changing into pH neutral.
In the plain boiled water body in storage tank and waste tank, the mensuration of bacterial cell counting, the mensuration interval in accordance with regulations that quantitatively writes down yeast and fungus and adenosine triphosphate carries out.Have been found that originally the bacterial cell counting rises, reach a balance at last.It is owing to pH neutral (referring to Figure 11-13) that yeast and fungus descend in proportion.
Although the bacterial cell counting increases, when using enzymatic compositions, do not observe the problem that belongs to mucosa or biomembrane generation again according to the present invention.Even higher bacterial cell counting, black speck and number of pores do not increase, and it illustrates that according to the present invention it is very effective that enzyme component and ethylene glycol component add for suppressing mucosa formation simultaneously.
Result's general introduction
The application of the present composition obtains and uses the suitable result of biocide.The formation that (even in pH neutral) and neoplasm film are eliminated in the mucosa alluvial is effectively suppressed effectively.Use compositions of the present invention in order to get rid of mucosa, for the commercial processes water system provides a kind of method of alternative use biocide, opposite with biocide, this method is effective and suitable environment, and also is favourable aspect cost.Because the application of the present composition, paper machine mesopore and crackle can reduce, and in the water bearing system, the obstruction that the problem of abnormal smells from the patient and microorganism cause may be solved effectively.
Table 1
Batching mode-cycle P ml stage 1 (9 days)
The batching point Product Time interval Ml/min Kg/day
Waste tank Biocide I ????3×30 ????75 ????7.97
Storage tank Biocide II ????4×30 ????60 ????8.21
White-water system I Enzyme A ????4×30 ????1458 ????192.45
Stage 2 (20 days)
The batching point Product Time interval Ml/min Kg/day
Waste tank Biocide I ????3×30 ????50 ????5.31
Storage tank Biocide II ????4×30 ????30 ????4.1
White-water system I Enzyme A ????4×30 ????1458 ????192.45
Stage 3 (9 days)
The batching point Product Time interval Ml/min Kg/day
Waste tank Biocide I ????3×30 ????50 ????5.31
Storage tank Biocide II ????4×30 ????30 ????4.1
White-water system I Enzyme A ????4×30 ????730 ????96.36
Stage 4 (20 days)
The batching point Product Time interval Ml/min Kg/day
Waste tank Biocide I ????3×30 ????50 ????5.31
Storage tank Biocide II
White-water system I Enzyme A ????4×30 ????500 ????65.4

Claims (18)

1. compositions, be applicable to the surface of avoiding the water bearing system form mucosa also/or get rid of its surperficial biomembrane, it is characterized in that compositions comprises at least a enzyme component, this enzyme is selected from one group of enzyme such as carbohydrase, protease, lipase and ethylene glycol protease, cooperation is with the ethylene glycol component of following general formula
R 2(O-R 1) n-O-R 3In the formula, n is the integer less than 10, R 1Be the alkyl of 2 or 3 carbon atoms, R 2And R 3Every kind of situation can be respectively the alkyl or the aromatic radical of a H or 1-6 carbon atom.
2. according to the compositions of claim 1, it is characterized in that the ratio that ethylene glycol component accounts for total composition is 10-80wt%.
3. according to the compositions of claim 1, it is characterized in that the ratio of enzyme ingredients constitute total composition is 90-20wt%.
4. according to the compositions of claim 1-3, it is characterized in that carbohydrase is glucanase, fucosidase or pectase.
5. according to the compositions of claim 1-4, it is characterized in that protease is Esperase (serine protease) or Neutrase (neutral protease).
6. according to the compositions of claim 1-5, it is characterized in that lipase is a lipolytic enzyme.
7. according to the compositions of claim 1-6, it is characterized in that ethylene glycol protease is inscribe-glycosidase.
8. according to the compositions of claim 1-7, it is characterized in that ethylene glycol is diethylene glycol or propylene glycol.
9. according to the compositions of claim 7, it is characterized in that enzyme is that 1,4 beta-glucanase and ethylene glycol are diethylene glycols.
10. according to the compositions of claim 9, it is characterized in that compositions comprises 30-50wt% 1,4 beta-glucanase and 20-40wt% diethylene glycol.
11. at least a enzyme component, the ethylene glycol component that it is selected from one group of enzyme such as carbohydrase, protease, lipase and ethylene glycol protease and a kind of following general formula is at the biomembrane of getting rid of water bearing system surface and/or prevent the application of surperficial mucosa in forming,
R 2(O-R 1) n-O-R 3N is the integer less than 10 in the following formula, R 1Be the alkyl of 2 or 3 carbon atoms, R 2And R 3In various situations can be respectively the alkyl or the aromatic radical of H, a 1-6 carbon atom.
12., it is characterized in that enzyme component and ethylene glycol component are the diverse locations that is added to the water bearing system according to the application of claim 11.
13., it is characterized in that enzyme component and ethylene glycol component are that form with the enzymatic compositions of claim 1-10 joins the water bearing system according to the application of claim 11.
14., it is characterized in that the concentration that enzymatic compositions adds is 5-200ppm according to the application of claim 13.
15., it is characterized in that the water bearing system is open or airtight commercial processes water system according to the application of claim 11-14.
16., it is characterized in that the commercial processes water system is water circulation system opening or airtight of paper plant according to the application of claim 15.
17., it is characterized in that the water bearing system is the plain boiled water carrying blood circulation of paper plant according to the application of claim 16.
18., it is characterized in that the water bearing system is a cooling water recirculation system according to the application of claim 15.
CN95196641A 1994-12-06 1995-11-21 Biofilm avoidance and removal process and composition Pending CN1168637A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEP4445070.2 1994-12-06
DE19944445070 DE4445070A1 (en) 1994-12-06 1994-12-06 Slime formation and/or bio-film removal compsn. in water-contg. system
US46521495A 1995-06-05 1995-06-05
US08/465,214 1995-06-05

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CA (1) CA2203436A1 (en)
CZ (1) CZ173897A3 (en)
FI (1) FI972388A0 (en)
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CN101437393B (en) * 2006-03-23 2014-03-12 花王株式会社 Biofilm formation inhibitor composition
CN105753142A (en) * 2016-04-18 2016-07-13 南京大学 In-situ activating agent and method of biological aerated filter filling biological membrane
CN111150010A (en) * 2020-01-30 2020-05-15 吴高峰 Making process of instant peeled shredded squid
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JP5322400B2 (en) * 2006-04-21 2013-10-23 花王株式会社 Biofilm control agent composition
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CN101437393B (en) * 2006-03-23 2014-03-12 花王株式会社 Biofilm formation inhibitor composition
CN101448399B (en) * 2006-04-21 2013-06-05 花王株式会社 Composition of biofilm control agent
CN105753142A (en) * 2016-04-18 2016-07-13 南京大学 In-situ activating agent and method of biological aerated filter filling biological membrane
CN111150010A (en) * 2020-01-30 2020-05-15 吴高峰 Making process of instant peeled shredded squid
CN111213843A (en) * 2020-01-30 2020-06-02 吴高峰 Production process of instant deoiling beef tendon silk
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CN111449205A (en) * 2020-04-05 2020-07-28 吴高峰 Making process of instant barbecue lamp shadow beef tendon

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JPH10509642A (en) 1998-09-22
AU4247496A (en) 1996-06-26
NO972499D0 (en) 1997-06-02
AU695600B2 (en) 1998-08-20
CA2203436A1 (en) 1996-06-13
CZ173897A3 (en) 1998-10-14
FI972388A0 (en) 1997-06-05
EP0796114A4 (en) 2000-06-14
MX9704090A (en) 1997-09-30
WO1996017632A1 (en) 1996-06-13
BR9509974A (en) 1998-06-09

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