CA1038781A - Clarification of xanthan gum - Google Patents
Clarification of xanthan gumInfo
- Publication number
- CA1038781A CA1038781A CA221,121A CA221121A CA1038781A CA 1038781 A CA1038781 A CA 1038781A CA 221121 A CA221121 A CA 221121A CA 1038781 A CA1038781 A CA 1038781A
- Authority
- CA
- Canada
- Prior art keywords
- xanthan gum
- enzyme
- solution
- xanthan
- fermentation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920001285 xanthan gum Polymers 0.000 title claims abstract description 108
- 229940082509 xanthan gum Drugs 0.000 title claims abstract description 72
- 235000010493 xanthan gum Nutrition 0.000 title claims abstract description 72
- 239000000230 xanthan gum Substances 0.000 title claims abstract description 72
- 238000005352 clarification Methods 0.000 title description 8
- 239000000243 solution Substances 0.000 claims abstract description 59
- 238000000855 fermentation Methods 0.000 claims abstract description 36
- 230000004151 fermentation Effects 0.000 claims abstract description 36
- 239000007787 solid Substances 0.000 claims abstract description 28
- 239000007864 aqueous solution Substances 0.000 claims abstract description 18
- 238000011282 treatment Methods 0.000 claims abstract description 14
- 239000003129 oil well Substances 0.000 claims abstract description 9
- 102000004190 Enzymes Human genes 0.000 claims description 56
- 108090000790 Enzymes Proteins 0.000 claims description 56
- 108091005658 Basic proteases Proteins 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 26
- 241000589634 Xanthomonas Species 0.000 claims description 14
- 235000015097 nutrients Nutrition 0.000 claims description 8
- 241000589636 Xanthomonas campestris Species 0.000 claims description 6
- 230000001413 cellular effect Effects 0.000 claims description 5
- 244000005700 microbiome Species 0.000 claims description 5
- 239000008247 solid mixture Substances 0.000 claims description 4
- 238000007865 diluting Methods 0.000 claims description 2
- 235000010633 broth Nutrition 0.000 abstract description 17
- 108091005804 Peptidases Proteins 0.000 abstract description 10
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 abstract 1
- 239000007900 aqueous suspension Substances 0.000 abstract 1
- 229940088598 enzyme Drugs 0.000 description 53
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 34
- 239000000203 mixture Substances 0.000 description 32
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 102000035195 Peptidases Human genes 0.000 description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- 102000005158 Subtilisins Human genes 0.000 description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 8
- 108010056079 Subtilisins Proteins 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000000706 filtrate Substances 0.000 description 7
- 235000013405 beer Nutrition 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 5
- 239000002609 medium Substances 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- 239000008399 tap water Substances 0.000 description 5
- 235000020679 tap water Nutrition 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000004365 Protease Substances 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000005018 casein Substances 0.000 description 3
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 3
- 235000021240 caseins Nutrition 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000193830 Bacillus <bacterium> Species 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 239000008135 aqueous vehicle Substances 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- MCWXGJITAZMZEV-UHFFFAOYSA-N dimethoate Chemical compound CNC(=O)CSP(=S)(OC)OC MCWXGJITAZMZEV-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920001282 polysaccharide Polymers 0.000 description 2
- 239000005017 polysaccharide Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000008234 soft water Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- BHMLFPOTZYRDKA-IRXDYDNUSA-N (2s)-2-[(s)-(2-iodophenoxy)-phenylmethyl]morpholine Chemical compound IC1=CC=CC=C1O[C@@H](C=1C=CC=CC=1)[C@H]1OCCNC1 BHMLFPOTZYRDKA-IRXDYDNUSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 241000193744 Bacillus amyloliquefaciens Species 0.000 description 1
- 241000194108 Bacillus licheniformis Species 0.000 description 1
- 241000194103 Bacillus pumilus Species 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000448280 Elates Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- 101001091385 Homo sapiens Kallikrein-6 Proteins 0.000 description 1
- 102100034866 Kallikrein-6 Human genes 0.000 description 1
- 241000208474 Protea Species 0.000 description 1
- 241000015473 Schizothorax griseus Species 0.000 description 1
- 241000187747 Streptomyces Species 0.000 description 1
- 241000187438 Streptomyces fradiae Species 0.000 description 1
- 241000938061 Streptomyces thermophilus Species 0.000 description 1
- 108090000787 Subtilisin Proteins 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 241001660687 Xantho Species 0.000 description 1
- 241001517672 Xanthomonas axonopodis pv. begoniae Species 0.000 description 1
- 241001677365 Xanthomonas axonopodis pv. vasculorum Species 0.000 description 1
- 241000589643 Xanthomonas translucens Species 0.000 description 1
- 101100162169 Xenopus laevis adrm1-a gene Proteins 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229920001222 biopolymer Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 229940079919 digestives enzyme preparation Drugs 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000002538 fungal effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 101150052240 ihfA gene Proteins 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 108010003855 mesentericopeptidase Proteins 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229940116540 protein supplement Drugs 0.000 description 1
- 235000005974 protein supplement Nutrition 0.000 description 1
- 230000017854 proteolysis Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- KEAYESYHFKHZAL-BJUDXGSMSA-N sodium-22 Chemical compound [22Na] KEAYESYHFKHZAL-BJUDXGSMSA-N 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
- C08B37/0033—Xanthan, i.e. D-glucose, D-mannose and D-glucuronic acid units, saubstituted with acetate and pyruvate, with a main chain of (beta-1,4)-D-glucose units; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
- C12P19/06—Xanthan, i.e. Xanthomonas-type heteropolysaccharides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/8215—Microorganisms
- Y10S435/822—Microorganisms using bacteria or actinomycetales
- Y10S435/91—Xanthomonas
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S507/00—Earth boring, well treating, and oil field chemistry
- Y10S507/935—Enhanced oil recovery
- Y10S507/936—Flooding the formation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Zoology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- Materials Engineering (AREA)
- Emergency Medicine (AREA)
- Biotechnology (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- Genetics & Genomics (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Enzymes And Modification Thereof (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US44987574A | 1974-03-11 | 1974-03-11 | |
| US05/513,810 US3966618A (en) | 1974-03-11 | 1974-10-10 | Clarification of xanthan gum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1038781A true CA1038781A (en) | 1978-09-19 |
Family
ID=27035848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA221,121A Expired CA1038781A (en) | 1974-03-11 | 1975-03-03 | Clarification of xanthan gum |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3966618A (en:Method) |
| JP (1) | JPS50121493A (en:Method) |
| CA (1) | CA1038781A (en:Method) |
| CH (1) | CH611932A5 (en:Method) |
| DE (1) | DE2510374C3 (en:Method) |
| FR (1) | FR2264077B1 (en:Method) |
| GB (1) | GB1443507A (en:Method) |
| IT (1) | IT1032245B (en:Method) |
| NL (1) | NL180123B (en:Method) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5595892A (en) * | 1991-12-20 | 1997-01-21 | Shin-Etsu Chemical Co., Ltd. | Process for preparation of purified xanthan gum |
| US5705368A (en) * | 1991-12-20 | 1998-01-06 | Shin-Etsu Chemical Co., Ltd. | Process for preparation of purified xanthan gum |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4218327A (en) * | 1976-04-05 | 1980-08-19 | Shell Oil Company | Stabilizing the viscosity of an aqueous solution of polysaccharide polymer |
| US4119546A (en) * | 1976-08-05 | 1978-10-10 | Pfizer Inc. | Process for producing Xanthomonas hydrophilic colloid, product resulting therefrom, and use thereof in displacement of oil from partially depleted reservoirs |
| GB1548078A (en) * | 1977-03-14 | 1979-07-04 | Tate & Lyle Ltd | Process for the production of polysaccarides of controlled viscosity |
| US4212748A (en) * | 1978-05-26 | 1980-07-15 | Conoco, Inc. | Polymer flood filtration improvement |
| NL7907884A (nl) * | 1978-11-06 | 1980-05-08 | Pfizer | Werkwijze voor de bereiding van een de beweeglijkheid regelende oplossing ten gebruike bij het winnen van olie. |
| US4326037A (en) * | 1979-11-01 | 1982-04-20 | The United States Of America As Represented By The United States Department Of Energy | Enzymatic method for improving the injectability of polysaccharides |
| EP0039962B1 (en) * | 1980-05-08 | 1983-03-02 | Shell Internationale Researchmaatschappij B.V. | Clarification of polysaccharide-containing fermentation products |
| DE3172841D1 (en) * | 1980-09-29 | 1985-12-12 | Shell Int Research | Treatment of pseudoplastic polysaccharide solutions |
| FR2506328A1 (fr) * | 1981-05-22 | 1982-11-26 | Inst Francais Du Petrole | Procede enzymatique de traitement de gommes xanthanes en vue d'ameliorer la filtration de leurs solutions aqueuses |
| EP0078621A1 (en) * | 1981-10-29 | 1983-05-11 | Kelco Biospecialties Limited | Treatment of Xanthan gum solutions |
| EP0078556B1 (en) * | 1981-11-03 | 1986-03-12 | Shell Internationale Researchmaatschappij B.V. | Process for cell disruption |
| US4558739A (en) * | 1983-04-05 | 1985-12-17 | The Board Of Regents For The University Of Oklahoma | Situ microbial plugging process for subterranean formations |
| US4522261A (en) * | 1983-04-05 | 1985-06-11 | The Board Of Regents For The University Of Oklahoma | Biosurfactant and enhanced oil recovery |
| FR2551087B1 (fr) * | 1983-08-30 | 1986-03-21 | Rhone Poulenc Spec Chim | Procede de traitement d'une solution de polysaccharide et son utilisation |
| US4682654A (en) * | 1985-05-22 | 1987-07-28 | Millmaster Onyx Group, Inc. | Enzymatically-treated guar gums |
| FR2597503B1 (fr) * | 1986-03-10 | 1988-12-30 | Inst Francais Du Petrole | Procede enzymatique de traitement de gommes xanthanes en vue d'ameliorer la filtrabilite de leurs solutions aqueuses |
| US5354671A (en) * | 1992-06-26 | 1994-10-11 | Shin-Etsu Chemical Co., Ltd. | Enzymatic clarification of polysaccharides |
| JP3741734B2 (ja) | 1994-06-30 | 2006-02-01 | 信越化学工業株式会社 | キサンタンガムの回収精製方法 |
| US6818594B1 (en) | 1999-11-12 | 2004-11-16 | M-I L.L.C. | Method for the triggered release of polymer-degrading agents for oil field use |
| JP2002060546A (ja) * | 2000-08-23 | 2002-02-26 | Nisshin Oil Mills Ltd:The | 透明水性弾性体 |
| KR20030045031A (ko) * | 2000-08-16 | 2003-06-09 | 닛신 오일리오 가부시키가이샤 | 투명수성탄성체 |
| US7910339B2 (en) * | 2005-07-22 | 2011-03-22 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Agriculture And Agri-Food Canada | Process for producing polysaccharide gum |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3305016A (en) * | 1959-11-02 | 1967-02-21 | Exxon Production Research Co | Displacement of oil from partially depleted reservoirs |
| US3119812A (en) * | 1962-04-02 | 1964-01-28 | Rogovin Seymour Peter | Method of recovering microbial polysaccharides from their fermentation broths |
| US3288211A (en) * | 1964-02-13 | 1966-11-29 | Johnston Norris | Water flooding process |
-
1974
- 1974-10-10 US US05/513,810 patent/US3966618A/en not_active Expired - Lifetime
-
1975
- 1975-02-25 NL NLAANVRAGE7502243,A patent/NL180123B/xx not_active Application Discontinuation
- 1975-03-03 CA CA221,121A patent/CA1038781A/en not_active Expired
- 1975-03-03 IT IT48418/75A patent/IT1032245B/it active
- 1975-03-05 JP JP50026955A patent/JPS50121493A/ja active Pending
- 1975-03-06 FR FR7507058A patent/FR2264077B1/fr not_active Expired
- 1975-03-06 GB GB947075A patent/GB1443507A/en not_active Expired
- 1975-03-10 DE DE2510374A patent/DE2510374C3/de not_active Expired
- 1975-03-11 CH CH307275A patent/CH611932A5/xx not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5595892A (en) * | 1991-12-20 | 1997-01-21 | Shin-Etsu Chemical Co., Ltd. | Process for preparation of purified xanthan gum |
| US5705368A (en) * | 1991-12-20 | 1998-01-06 | Shin-Etsu Chemical Co., Ltd. | Process for preparation of purified xanthan gum |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1443507A (en) | 1976-07-21 |
| NL180123B (nl) | 1986-08-01 |
| DE2510374A1 (de) | 1975-09-18 |
| NL7502243A (nl) | 1975-09-15 |
| US3966618A (en) | 1976-06-29 |
| DE2510374C3 (de) | 1978-06-01 |
| JPS50121493A (en:Method) | 1975-09-23 |
| DE2510374B2 (de) | 1977-10-06 |
| FR2264077A1 (en:Method) | 1975-10-10 |
| FR2264077B1 (en:Method) | 1978-10-06 |
| CH611932A5 (en:Method) | 1979-06-29 |
| IT1032245B (it) | 1979-05-30 |
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