WO2008142111A1 - Verwendung von hydrophobinen als hilfsmittel bei der kristallisation von feststoffen - Google Patents
Verwendung von hydrophobinen als hilfsmittel bei der kristallisation von feststoffen Download PDFInfo
- Publication number
- WO2008142111A1 WO2008142111A1 PCT/EP2008/056263 EP2008056263W WO2008142111A1 WO 2008142111 A1 WO2008142111 A1 WO 2008142111A1 EP 2008056263 W EP2008056263 W EP 2008056263W WO 2008142111 A1 WO2008142111 A1 WO 2008142111A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydrophobins
- hydrophobin
- aqueous phase
- fusion
- crystallization
- Prior art date
Links
- 239000007787 solid Substances 0.000 title claims abstract description 41
- 238000002425 crystallisation Methods 0.000 title claims abstract description 23
- 230000008025 crystallization Effects 0.000 title claims abstract description 23
- 239000000654 additive Substances 0.000 title claims abstract 3
- 239000008346 aqueous phase Substances 0.000 claims abstract description 26
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 26
- 239000010440 gypsum Substances 0.000 claims abstract description 26
- 230000004927 fusion Effects 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 33
- 101710091977 Hydrophobin Proteins 0.000 claims description 27
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 239000007791 liquid phase Substances 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- 238000006477 desulfuration reaction Methods 0.000 claims description 4
- 230000023556 desulfurization Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 235000018102 proteins Nutrition 0.000 description 19
- 108090000623 proteins and genes Proteins 0.000 description 19
- 102000004169 proteins and genes Human genes 0.000 description 19
- 150000001413 amino acids Chemical class 0.000 description 17
- 235000001014 amino acid Nutrition 0.000 description 16
- 235000018417 cysteine Nutrition 0.000 description 11
- 239000000243 solution Substances 0.000 description 10
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical compound SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 description 8
- 239000013078 crystal Substances 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
- 108090000765 processed proteins & peptides Proteins 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- 101710195795 Hydrophobin-B Proteins 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 description 6
- 150000001945 cysteines Chemical class 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
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- 238000006243 chemical reaction Methods 0.000 description 4
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- MTCFGRXMJLQNBG-REOHCLBHSA-N (2S)-2-Amino-3-hydroxypropansäure Chemical compound OC[C@H](N)C(O)=O MTCFGRXMJLQNBG-REOHCLBHSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- FFEARJCKVFRZRR-BYPYZUCNSA-N L-methionine Chemical compound CSCC[C@H](N)C(O)=O FFEARJCKVFRZRR-BYPYZUCNSA-N 0.000 description 3
- AYFVYJQAPQTCCC-GBXIJSLDSA-N L-threonine Chemical compound C[C@@H](O)[C@H](N)C(O)=O AYFVYJQAPQTCCC-GBXIJSLDSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 108091028043 Nucleic acid sequence Proteins 0.000 description 3
- 235000004279 alanine Nutrition 0.000 description 3
- 235000010216 calcium carbonate Nutrition 0.000 description 3
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- 238000001914 filtration Methods 0.000 description 3
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- 150000007523 nucleic acids Chemical group 0.000 description 3
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- 238000002360 preparation method Methods 0.000 description 3
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- 235000004400 serine Nutrition 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 235000008521 threonine Nutrition 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000010626 work up procedure Methods 0.000 description 3
- 239000004471 Glycine Substances 0.000 description 2
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 description 2
- MTCFGRXMJLQNBG-UHFFFAOYSA-N Serine Natural products OCC(N)C(O)=O MTCFGRXMJLQNBG-UHFFFAOYSA-N 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- AYFVYJQAPQTCCC-UHFFFAOYSA-N Threonine Natural products CC(O)C(N)C(O)=O AYFVYJQAPQTCCC-UHFFFAOYSA-N 0.000 description 2
- 239000004473 Threonine Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000007900 aqueous suspension Substances 0.000 description 2
- 230000004071 biological effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
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- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 101100215658 Aspergillus parasiticus (strain ATCC 56775 / NRRL 5862 / SRRC 143 / SU-1) aflY gene Proteins 0.000 description 1
- 244000063299 Bacillus subtilis Species 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- 101100232322 Bradyrhizobium diazoefficiens (strain JCM 10833 / BCRC 13528 / IAM 13628 / NBRC 14792 / USDA 110) hypA2 gene Proteins 0.000 description 1
- 101100059802 Chlamydophila caviae (strain ATCC VR-813 / DSM 19441 / GPIC) groEL1 gene Proteins 0.000 description 1
- 101100365080 Clostridium perfringens (strain 13 / Type A) scpB gene Proteins 0.000 description 1
- 101100387133 Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139) dewA gene Proteins 0.000 description 1
- 108010013369 Enteropeptidase Proteins 0.000 description 1
- 102100029727 Enteropeptidase Human genes 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 108010074860 Factor Xa Proteins 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- DCXYFEDJOCDNAF-REOHCLBHSA-N L-asparagine Chemical compound OC(=O)[C@@H](N)CC(N)=O DCXYFEDJOCDNAF-REOHCLBHSA-N 0.000 description 1
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 241000222481 Schizophyllum commune Species 0.000 description 1
- 101100232321 Synechocystis sp. (strain PCC 6803 / Kazusa) hypA1 gene Proteins 0.000 description 1
- 102000002933 Thioredoxin Human genes 0.000 description 1
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- 230000021736 acetylation Effects 0.000 description 1
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- 150000007513 acids Chemical class 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 125000003295 alanine group Chemical group N[C@@H](C)C(=O)* 0.000 description 1
- 150000001295 alanines Chemical class 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 210000004899 c-terminal region Anatomy 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
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- ATDGTVJJHBUTRL-UHFFFAOYSA-N cyanogen bromide Chemical compound BrC#N ATDGTVJJHBUTRL-UHFFFAOYSA-N 0.000 description 1
- 125000000151 cysteine group Chemical group N[C@@H](CS)C(=O)* 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
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- 101150077981 groEL gene Proteins 0.000 description 1
- 101150006844 groES gene Proteins 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 101150081485 hypA gene Proteins 0.000 description 1
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- 229920000136 polysorbate Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 101150042737 rodA gene Proteins 0.000 description 1
- 150000003355 serines Chemical class 0.000 description 1
- 239000002453 shampoo Substances 0.000 description 1
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- 229940094937 thioredoxin Drugs 0.000 description 1
- 150000003588 threonines Chemical class 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/005—Selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for introduction thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/507—Sulfur oxides by treating the gases with other liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
- C01F11/183—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds the additive being an organic compound
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
- C01F11/466—Conversion of one form of calcium sulfate to another
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/02—Particle morphology depicted by an image obtained by optical microscopy
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/40—Particle morphology extending in three dimensions prism-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
Definitions
- hydrophobins as an aid in the crystallization of solids
- the present invention relates to the use of hydrophobins as aids in the crystallization of solids, in particular the use for the production of gypsum from aqueous phase.
- the properties of finely divided solids are largely determined by the size and habit of the crystallites that make up the solid. Size and habit significantly influence the rheological properties of solid suspensions, the separability of the solids from aqueous suspensions, for example by filtration, the handling of the dried products and the properties of the solids themselves. By way of example, attention is drawn to the color intensity or the dispersibility of color pigments, which are significantly dependent on Size and habit of each crystallite dependent.
- Hydrophobins are small proteins of about 100 to 150 amino acids, which occur in filamentous fungi, for example Schizophyllum commune. They usually have 8 cysteine units. Hydrophobins can be isolated from natural sources, but can also be obtained by genetic engineering, as disclosed, for example, by WO 2006/082251 or WO 2006/131564.
- hydrophobins for various applications has been proposed in the prior art.
- WO 96/41882 proposes the use of hydrophobins as emulsifiers, thickeners, surface-active substances, for hydrophilicizing hydrophobic surfaces, for improving the water resistance of hydrophilic substrates, for producing oil-in-water emulsions or for water-in-oil emulsions.
- pharmaceutical applications such as the production of ointments or creams as well as cosmetic applications such as skin protection or the production of hair shampoos or hair rinses are proposed.
- EP 1 252 516 discloses the coating of various substrates with a solution containing hydrophobins at a temperature of from 30 to 80 ° C.
- hydrophobins as a crystallization aid is not yet known.
- the object of the invention was to make novel aids for influencing the crystallization available.
- hydrophobins Accordingly, the use of hydrophobins has been found to assist in the crystallization of solids.
- a process for producing solids by crystallization from aqueous phase and separation of the solid formed from the aqueous phase has been found, wherein the aqueous phase at least one soluble in the aqueous phase assistant in an amount of 0.001 to 1 % By weight, based on the total amount of aqueous phase, of which at least one of the auxiliaries is a hydrophobin.
- a process for the production of gypsum is a process for the production of gypsum. This is particularly preferably a process step of a process for flue gas desulfurization.
- hydrophobins are to be understood below to mean polypeptides of the general structural formula (I)
- the radicals X may be the same or different.
- the indices standing at X each represent the number of amino acids in the respective subsequence X
- C stands for cysteine, alanine, serine, glycine, methionine or threonine, at least four of the radicals named C being cysteine
- the indices n and m independently represent natural numbers between 0 and 500, preferably between 15 and 300.
- the polypetides according to the formula (I) are further characterized by the property that at room temperature after coating a glass surface, they increase the contact angle of a water droplet of at least 20 °, preferably at least 25 ° and particularly preferably 30 °, in each case compared with the contact angle an equally large drop of water with the uncoated glass surface.
- the amino acids designated C to C 8 are preferably cysteines; but they can also be replaced by other amino acids of similar space filling, preferably by alanine, serine, threonine, methionine or glycine. However, at least four, preferably at least 5, particularly preferably at least 6 and in particular at least 7 of the positions C to C 8 should consist of cysteines. Cysteines can either be reduced in the proteins according to the invention or can form disulfide bridges with one another. Particularly preferred is the intramolecular formation of CC bridges, in particular those having at least one, preferably 2, more preferably 3 and most preferably 4 intramolecular disulfide bridges. In the exchange of cysteines described above by amino acids of similar space filling, it is advantageous to exchange in pairs those C positions which are capable of forming intramolecular disulfide bridges with one another.
- cysteines, serines, alanines, glycines, methionines or threonines are also used in the positions indicated by X, the numbering of the individual C positions in the general formulas may change accordingly.
- the proteins continue through the characterized above contact angle change, and it continues with at least at least 6 of the residues named C are cysteine. Most preferably, all of the C radicals are cysteine.
- the proteins are further characterized by the abovementioned contact angle change, and at least 6 of the C named residues are cysteine. Most preferably, all of the C radicals are cysteine.
- radicals X n and X m may be peptide sequences, growing naturally linked to a hydrophobin. However, one or both of the residues may be peptide sequences that are not naturally linked to a hydrophobin. Including such radicals X N and / or X m are to be understood, in which a naturally occurring in a hydrophobin peptide sequence is extended by a non-naturally occurring in a hydrophobin peptide sequence.
- X n and / or X m are naturally non-hydrophobin-linked peptide sequences, such sequences are generally at least 20, preferably at least 35 amino acids long. They may, for example, be sequences from 20 to 500, preferably 30 to 400 and particularly preferably 35 to 100 amino acids.
- Such a residue, which is not naturally linked to a hydrophobin will also be referred to below as a fusion partner.
- the proteins may consist of at least one hydrophobin part and one fusion partner part which in nature do not coexist in this form. Fusion-hydrophobins from fusion partner and hydrophobin part have been disclosed for example in WO 2006/082251, WO 2006/082253 and WO 2006/131564.
- the fusion partner portion can be selected from a variety of proteins. Only a single fusion partner can be linked to the hydrophobin moiety, or several fusion partners can also be linked to a hydrophobin moiety, for example at the amino terminus (X n ) and at the carboxy terminus (X m ) of the hydrophobic moiety. However, it is also possible, for example, to link two fusion partners with a position (X n or X m ) of the protein according to the invention.
- fusion partners are proteins that occur naturally in microorganisms, in particular in E. coli or Bacillus subtilis.
- Fusion partners are the sequences yaad (SEQ ID NO: 16 in WO 2006/082251), yaae (SEQ ID NO: 18 in WO 2006/082251) and thioredoxin.
- fragments or derivatives of said sequences which comprise only a part, for example 70 to 99%, preferably 5 to 50%, and particularly preferably 10 to 40% of the said sequences, or in which individual amino acids, or Nucleotides are changed from the said sequence, wherein the percentages in each case refers to the number of amino acids.
- the fusion hydrophobin in addition to said fusion partner as one of the groups X n or X m or as a terminal component of such a group on a so-called affinity domain (affinity tag / affinity tail) on.
- affinity domains include (His) k, (Arg) k, (Asp) k, (Phe) k or (Cys) k groups, where k is generally a natural number from 1 to 10. It may preferably be a (His) k group, where k is 4 to 6.
- the group X n and / or m X may consist exclusively of such an affinity domain or a naturally or non-naturally to a hydrophobin comparable knüpfter radical X n and X m is extended by a terminal affinity domain.
- proteins used according to the invention as hydrophobins or derivatives thereof may also be modified in their polypeptide sequence, for example by glycosylation, acetylation or else by chemical crosslinking, for example with glutaric dialdehyde.
- a characteristic of the hydrophobins or their derivatives used according to the invention is the change of surface properties when the surfaces are coated with the proteins.
- the change in the surface properties can be experimentally determined, for example, by measuring the contact angle of a water drop before and after coating the surface with the protein and determining the difference between the two measurements.
- contact angle measurements is known in principle to the person skilled in the art.
- the measurements refer to room temperature and water drops of 5 ⁇ l and the use of glass slides as substrate.
- the exact experimental conditions for an exemplary method for measuring the contact angle are shown in the experimental part.
- the fusion proteins used according to the invention have the property of increasing the contact angle by at least 20 °, preferably at least 25 °, particularly preferably at least 30 ° in each case compared to the contact angle of a water droplet of the same size with the uncoated glass surface.
- hydrophobins for practicing the present invention are the dewA, rodA, hypA, hypB, sc3, basfl, basf2 hydrophobins. These hydrophobins including their sequences are disclosed, for example, in WO 2006/82251. Unless stated otherwise, the sequences given below refer to sequences disclosed in WO 2006/82251. An overview table with the SEQ-I D numbers can be found in WO 2006/82251 on page 20.
- fusion proteins yaad-Xa-dewA-his SEQ ID NO: 20
- yaad-Xa-rodA-his SEQ ID NO: 22
- yaad-Xa-basfl-his SEQ ID NO: 24
- proteins which, starting from the amino acid sequences shown in SEQ ID NO. 20, 22 or 24 shown by exchange, insertion or deletion of at least one, up to 10, preferably 5, more preferably 5% of all amino acids, and still have at least 50% of the biological property of the starting proteins particularly preferred embodiments.
- the biological property of the proteins is hereby understood as the change in the contact angle already described by at least 20 °.
- Particularly suitable derivatives for carrying out the present invention are from yaad-Xa-dewA-his (SEQ ID NO: 20), yaad-Xa-rodA-his (SEQ ID NO: 22) or yaad-Xa-basf1-his (SEQ ID NO: 24) derivatives derived from truncation of the yaad fusion partner.
- yaad-Xa-dewA-his SEQ ID NO: 20
- yaad-Xa-rodA-his SEQ ID NO: 22
- yaad-Xa-basf1-his SEQ ID NO: 24
- the truncated residue should comprise at least 20, preferably at least 35, amino acids.
- a truncated radical having 20 to 293, preferably 25 to 250, particularly preferably 35 to 150 and for example 35 to 100 amino acids can be used.
- An example of such a protein is yaad40-Xa-dewA-his (SEQ ID NO: 26 in PCT / EP2006 / 064720), which has a 40 amino acid truncated yaad residue.
- a cleavage site between the hydrophobin and the fusion partner or the fusion partners can be used to cleave off the fusion partner and to release the pure hydrophobin in underivatized form (for example by BrCN cleavage on methionine, factor Xa, enterokinase, thrombin, TEV Cleavage etc.).
- the hydrophobins used according to the invention as auxiliaries for the crystallization can be prepared chemically by known methods of peptide synthesis, such as, for example, by Merrifield solid-phase synthesis.
- Naturally occurring hydrophobins can be isolated from natural sources by suitable methods. As an example, let Wösten et. al., Eur. J Cell Bio. 63, 122-129 (1994) or WO 96/41882.
- fusion proteins can preferably be carried out by genetic engineering methods in which a nucleic acid sequence coding for the fusion partner and a hydrophobin part, in particular DNA sequence, are combined in such a way that the desired protein is produced in a host organism by gene expression of the combined nucleic acid sequence.
- a production method for example, is disclosed by WO 2006/082251 or WO 2006/082253.
- the fusion partners greatly facilitate the production of hydrophobins. Fusion hydrophobins are produced in genetically engineered processes with significantly better yields than hydrophobins without fusion partners.
- the fusion hydrophobins produced by the host organisms by the genetic engineering process can be worked up in a manner known in principle and purified by known chromatographic methods.
- the simplified work-up and purification process disclosed in WO 2006/082253, pages 1 1/12 can be used.
- the fermented cells are first separated from the Fermetationsbrühe, digested and the cell debris of the inclusion bodies (inclusion bo) this separated. The latter can be done advantageously by centrifuging.
- the inclusion bodies for example by acids, bases and / or detergents can be digested in a manner known in principle in order to liberate the fusion hydrophobins.
- the inclusion bodies with the fusion hydrophobins used according to the invention can generally be completely dissolved within about 1 h already using 0.1 M NaOH.
- the solutions obtained can be used without further purification for carrying out this invention.
- the fusion hydrophobins can also be isolated from the solutions as a solid.
- the isolation can preferably be effected by spray drying, as described in WO 2006/082253, page 12.
- the products obtained by the simplified work-up and purification process comprise, in addition to residues of cell debris, usually about 80 to 90% by weight of proteins.
- the amount of fusion Depending on the fusion construct and fermentation conditions, hydrophobins are generally from 30 to 80% by weight, based on the amount of all proteins.
- the isolated products containing fusion hydrophobins can be stored as solids and dissolved for use in the respective desired media.
- the fusion hydrophobins can be used as such or else after cleavage and separation of the fusion partner as "pure" hydrophobins for carrying out this invention .
- a splitting is advantageously carried out after isolation of the inclusion bodies and their dissolution.
- the hydrophobins are used as aids in the crystallization of solids by carrying out the crystallization in the presence of hydrophobins.
- the liquid phases comprise one or more solvents, dissolved solids and / or starting materials for their preparation, the hydrophobins and optionally further components, such as, for example, further auxiliaries.
- the choice of solvent or solvent mixtures is in principle not limited, provided that the solids to be crystallized and the hydrophobins have sufficient solubility therein. The person skilled in the art makes a suitable choice depending on the solid to be crystallized.
- the liquid phases are preferably aqueous phases.
- aqueous phase is intended to mean that the solvents used are at least 50% by weight of water, based on the total amount of all solvents used, preferably at least 70% by weight of water, more preferably at least 90% by weight % Water.
- Possible cosolvents which can be used are water-miscible solvents, for example alcohols, such as methanol, ethanol or propanol.
- the solvent is most preferably exclusively water.
- the pH of the aqueous phase can be selected by the person skilled in the art, depending on the type of solid to be crystallized and the desired solid properties.
- the hydrophobins preferably fusion hydrophobins, can advantageously be used at a pH> 4, in particular from 4 to 13. It is preferably pH values from 5 to 13, particularly preferably 6 to 12 and very particularly preferably 7 to 11.
- the amount of hydrophobins to be used can be selected by the skilled person depending on the nature of the solid to be crystallized and the desired solid properties become. In general, an amount of less than 1% by weight with respect to the sum of all constituents of the aqueous phase has proven successful.
- the hydrophobins can preferably be used in an amount of 0.001% by weight to 1% by weight, particularly preferably 0.001 to 0.2% by weight.
- crystallization processes from liquid phases. They may, for example, be crystallization processes in which a saturated solution of the solid is used and the crystallization of the solid is triggered by evaporation of the solvent, cooling or admixing of a further solvent in which the solid is not soluble. It may also be a reaction precipitation, in which the solid is formed only in the aqueous phase by reaction of soluble components with each other.
- the above-mentioned fusion hydrophobins can be used as hydrophobins.
- yaad-Xa-dewA-his SEQ ID NO: 20
- products with a shortened yaad residue such as yaad40-Xa-dewA-his.
- the products prepared according to the simplified cleaning method described above can be used.
- the hydrophobins are useful both as auxiliaries for the crystallization of inorganic as well as organic solids from liquid phases. Particularly well the hydrophobins can be used as an aid to the crystallization of gypsum (CaSO4 * 2H2O) can be used. Instead of acicular crystallites, more compact crystallites are obtained with a significantly smaller length / thickness ratio, which can be more easily separated from the aqueous phase.
- hydrophobins are particularly suitable for crystallizing calcium carbonate.
- the hydrophobins can be used in a process for the production of solids by crystallization from aqueous phase and separation of the solid formed from the aqueous phase. Most preferably, it may be a process for separating gypsum.
- the step of crystallization and preferred conditions have already been described above.
- the separation of the solids preferably the gypsum, can be carried out by methods known to those skilled in the art, for example by filtration or by a combination of different measures for the separation of liquids from solids.
- the moist solid can be dried and processed further.
- the method according to the invention may in particular be a method step of a method for flue gas desulfurization.
- gaseous SO2 is reacted with an aqueous CaCO3 suspension to CaSO3 and the CaS ⁇ 3 oxidized with O2 to CaSO 4 , which crystallized as CaSO 4 * 2 H2O.
- the hydrophobins are added to the process water used in the concentrations indicated above.
- hydrophobin A a fusion hydrophobin with the complete fusion partner yaad was used (yaad-Xa-dewA-his, hereinafter called hydrophobin A) and a fusion hydrophobin with a reduced to 40 amino acids fusion partner yaad40-Xa-dewA-his (hydrophobin B ).
- hydrophobin B a fusion hydrophobin with a reduced to 40 amino acids fusion partner yaad40-Xa-dewA-his
- Substrate glass (window glass, Süd Weg Glas, Mannheim)
- the samples are air-dried and the contact angle (in degrees) of a drop of 5 ⁇ l of water at room temperature is determined.
- the contact angle measurement was performed on a device Dataphysics Contact Angle System OCA 15+, Software SCA 20.2.0. (November 2002). The measurement was carried out according to the manufacturer's instructions.
- Untreated glass gave a contact angle of 15 ° to 30 ° ⁇ 5 °.
- Coating with the fusion hydrophobin yaad-Xa-dewA-his ⁇ gave a contact angle increase of more than 30 °; a coating with the fusion hydrophobin yaad40-Xa-dewA-his also gave a contact angle increase of more than 30 °.
- a saturated solution of CaSO 4 .2H 2 O in demineralized water was prepared (concentration about 2 g / l). Hydrophobin A or hydrophobin B were added to each of the solutions so that the gypsum solution had a concentration of about 0.1 g / l of the spray-dried product. The pH of the solution was adjusted with HCl or NaOH. The aqueous solutions / dispersions were filtered through a folded filter (about 10 ⁇ m). About 25 ml of the solution were then added to a petri filled and allowed to evaporate the water at room temperature in about 24 hours. A solution was left for comparison without hydrophobin addition.
- FIGs 1 to 6 show that hydrophobins can influence the crystal form of gypsum.
- Gypsum precipitated at a pH of 8 without auxiliary means consists of needles with a length / thickness ratio of at least 10 (Fig. 1).
- Fig. 2 with addition of hydrophobin A (Fig. 2) or hydrophobin B (Fig. 3) precipitated gypsum no longer consists of needles, but relatively compact prisms with a length / thickness ratio of approx 2 to 3 received.
- the needle length is significantly shortened compared to the experiment without Hydrophobinzusatz. Such compact particles can be filtered better.
- the needle length is shortened by the hydrophobins at all pH values (Fig. 4 to 6). This effect is most pronounced in the alkaline pH range ( Figures 1 to 3 and 6), in which almost exclusively prisms and no needles are obtained.
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- Chemical Kinetics & Catalysis (AREA)
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- Geology (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
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Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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CN200880017298A CN101679063A (zh) | 2007-05-24 | 2008-05-21 | 疏水蛋白在固体结晶中作为添加剂的用途 |
US12/601,281 US20100166627A1 (en) | 2007-05-24 | 2008-05-21 | Use of hydrophobins as additives in the crystallization of solids |
CA002687490A CA2687490A1 (en) | 2007-05-24 | 2008-05-21 | Use of hydrophobins as auxiliaries in the crystallization of solids |
EP08759865A EP2155611A1 (de) | 2007-05-24 | 2008-05-21 | Verwendung von hydrophobinen als hilfsmittel bei der kristallisation von feststoffen |
MX2009012309A MX2009012309A (es) | 2007-05-24 | 2008-05-21 | El uso de hidrofobicos como aditivos en la cristalizacion de solidos. |
JP2010508843A JP2010527886A (ja) | 2007-05-24 | 2008-05-21 | 固体の結晶化助剤としてのハイドロフォビンの利用 |
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EP07108856 | 2007-05-24 | ||
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PCT/EP2008/056263 WO2008142111A1 (de) | 2007-05-24 | 2008-05-21 | Verwendung von hydrophobinen als hilfsmittel bei der kristallisation von feststoffen |
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US (1) | US20100166627A1 (de) |
EP (1) | EP2155611A1 (de) |
JP (1) | JP2010527886A (de) |
KR (1) | KR20100022482A (de) |
CN (1) | CN101679063A (de) |
CA (1) | CA2687490A1 (de) |
CL (1) | CL2008001513A1 (de) |
MX (1) | MX2009012309A (de) |
RU (1) | RU2009147812A (de) |
TW (1) | TW200914378A (de) |
WO (1) | WO2008142111A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011015530A2 (en) | 2009-08-03 | 2011-02-10 | Basf Se | Process for deposition of thin layers of metal oxides |
EP2296772B1 (de) * | 2008-07-11 | 2017-08-02 | B.R.A.I.N. Biotechnology Research and Information Network AG | Amphiphile proteine als morphologie-modifikatoren |
Families Citing this family (6)
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KR20080004555A (ko) * | 2005-03-31 | 2008-01-09 | 바스프 악티엔게젤샤프트 | 접착 촉진제로서의 폴리펩티드의 용도 |
DE102005033002A1 (de) * | 2005-07-14 | 2007-01-18 | Basf Ag | Wässrige Monomeremulsionen enthaltend Hydrophobin |
WO2010060702A1 (en) * | 2008-11-03 | 2010-06-03 | Basf Se | Photoinitiator mixtures |
EP2370060B1 (de) | 2008-11-27 | 2017-05-03 | B.R.A.I.N. Biotechnology Research and Information Network AG | Hydrophobine als oberflächenaktive proteine als hilfsstoffe in festen pharmazeutischen formulierungen |
JP5832302B2 (ja) | 2009-02-26 | 2015-12-16 | ビー.アール.エイ.アイ.エヌ.バイオテクノロジー リサーチ アンド インフォメーション ネットワーク アクチエンゲゼルシャフトB.R.A.I.N. Biotechnology Research and Information Network AG | ケラチンへの局所薬剤デリバリーにおける表面活性タンパク質の組成物、使用及び使用方法 |
EP2697245A4 (de) * | 2011-04-15 | 2014-11-05 | Danisco Us Inc | Verfahren zur aufreinigung von hydrophobin |
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DE502006008140D1 (de) * | 2005-08-01 | 2010-12-02 | Basf Se | Verwendung von grenzflächenaktiven, nicht-enzymatischen proteinen für die textilwäsche |
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2008
- 2008-05-21 KR KR1020097026772A patent/KR20100022482A/ko not_active Application Discontinuation
- 2008-05-21 CN CN200880017298A patent/CN101679063A/zh active Pending
- 2008-05-21 RU RU2009147812/05A patent/RU2009147812A/ru not_active Application Discontinuation
- 2008-05-21 US US12/601,281 patent/US20100166627A1/en not_active Abandoned
- 2008-05-21 EP EP08759865A patent/EP2155611A1/de not_active Withdrawn
- 2008-05-21 MX MX2009012309A patent/MX2009012309A/es unknown
- 2008-05-21 WO PCT/EP2008/056263 patent/WO2008142111A1/de active Application Filing
- 2008-05-21 CA CA002687490A patent/CA2687490A1/en not_active Abandoned
- 2008-05-21 JP JP2010508843A patent/JP2010527886A/ja not_active Withdrawn
- 2008-05-22 TW TW097118950A patent/TW200914378A/zh unknown
- 2008-05-23 CL CL2008001513A patent/CL2008001513A1/es unknown
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US4183908A (en) * | 1977-06-24 | 1980-01-15 | Southern California Edison Company | Crystalline calcium sulfate dihydrate and process for making same |
JPS5532789A (en) * | 1979-08-14 | 1980-03-07 | Hiyougoken | Production of hexagonal prismatic crystal alpha-type hemihydrate gypsum |
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EP2296772B1 (de) * | 2008-07-11 | 2017-08-02 | B.R.A.I.N. Biotechnology Research and Information Network AG | Amphiphile proteine als morphologie-modifikatoren |
WO2011015530A2 (en) | 2009-08-03 | 2011-02-10 | Basf Se | Process for deposition of thin layers of metal oxides |
Also Published As
Publication number | Publication date |
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KR20100022482A (ko) | 2010-03-02 |
RU2009147812A (ru) | 2011-06-27 |
CA2687490A1 (en) | 2008-11-27 |
TW200914378A (en) | 2009-04-01 |
CN101679063A (zh) | 2010-03-24 |
EP2155611A1 (de) | 2010-02-24 |
CL2008001513A1 (es) | 2009-10-23 |
US20100166627A1 (en) | 2010-07-01 |
JP2010527886A (ja) | 2010-08-19 |
MX2009012309A (es) | 2009-12-01 |
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