GB682993A - Production of strains of escherichia coli of high antibiotic activity against tubercle-bacilli - Google Patents
Production of strains of escherichia coli of high antibiotic activity against tubercle-bacilliInfo
- Publication number
- GB682993A GB682993A GB17614/50A GB1761450A GB682993A GB 682993 A GB682993 A GB 682993A GB 17614/50 A GB17614/50 A GB 17614/50A GB 1761450 A GB1761450 A GB 1761450A GB 682993 A GB682993 A GB 682993A
- Authority
- GB
- United Kingdom
- Prior art keywords
- culture medium
- whey
- strains
- separating
- protein
- 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
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/66—Microorganisms or materials therefrom
- A61K35/74—Bacteria
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
- C12N1/205—Bacterial isolates
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- 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
- C12P1/00—Preparation of compounds or compositions, not provided for in groups C12P3/00 - C12P39/00, by using microorganisms or enzymes
- C12P1/04—Preparation of compounds or compositions, not provided for in groups C12P3/00 - C12P39/00, by using microorganisms or enzymes by using bacteria
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
- C12R2001/185—Escherichia
- C12R2001/19—Escherichia coli
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Biotechnology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Genetics & Genomics (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Medicinal Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Virology (AREA)
- Biomedical Technology (AREA)
- Tropical Medicine & Parasitology (AREA)
- Mycology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Antibiotically active material, which is not colicine, is isolated from a culture of strains of Escherichia Coli of high antibiotic activity against tubercle-bacilli by extraction with a solvent capable of dissolving lipoids, e.g. ether, petroleum ether, methylene chloride, ethyl acetate, methyl ethyl ketone and butanol. The culture, the centrifuged bacteria or the culture centrifugate may be used. The active material is obtained by removing the solvent. Extraction and recovery is preferably carried out at a temperature below 45 DEG C. The E. Coli are obtained by selecting antibiotically active strains cultivated in peptone - containing Hottinger culture medium and further cultivating such active strains in a culture medium containing protein, carbohydrate and nutrient salts substantially in the ratio of 1 : 3 : 0.9. The culture medium may be whey of reduced protein content obtained by heating whey of pH 4.5 to 4.8 at 80 DEG to 95 DEG C., separating the precipitated protein, reheating the product at a pH 7.5 to 8.1 and 80 DEG to 95 DEG C. and separating the further precipitated protein. In this material the nutrient salt is mainly sodium and potassium phosphates and the protein content 10 g./litre. Peptones may be added up to 10 grams per litre of the prepared whey. The Hottinger culture medium is obtained by digesting horsemeat with pancreatin, diluting with water and adding sodium chloride, K2HPO4 and peptone, the pH being adjusted to pH 7.2 to 7.5. It is preferred to use three or more cultivation steps. The temperature is 37 DEG C., the pH is maintained at pH 7.2\sB0.2 by the addition of alkali, e.g. ammonia, and the culture medium is stirred and aerated. Cultivation is continued until the bacteria have multiplied in the whey medium by a factor of 1000 to 10,000.ALSO:Strains of Escherichia coli of high antibiotic activity against tubercle-bacilli are obtained by selecting antibiotically active strains from E. coli cultivated in peptone-containing Hottinger culture medium, further cultivating such active strains in a culture medium containing protein, carbohydrate and nutrient salts substantially in the ratio of 1 : 3 : 0.9 and thereafter separating the antibiotically active strains of E. coli from such medium. The culture medium may be whey of reduced protein content obtained by heating whey of pH 4.5 to 4.8 at 80 to 95 DEG C., separating the precipitated protein, reheating the product at a pH 7.5 to 8.1 and 80 to 95 DEG C. and separating further precipitated protein. In this material the nutrient salt is mainly sodium and potassium phosphates and the protein content 10 g/litre. Peptones may be added up to 10 grms per litre of the prepared whey. The Hottinger culture medium is obtained by digesting horsemeat with pancreatin, filtering, diluting with water and adding sodium chloride, K2HPO4 and peptone, the pH being adjusted to 7.2 to 7.5. Preferably three or more cultivation steps are used; the temperature is 37 DEG C., the pH is maintained at 7.2\sB0.2 by the addition of alkali preferably ammonia, and the culture medium is stirred and aerated. Cultivation in the whey medium is continued until the bacteria have multiplied by a factor of 1,000 to 10,000. A suspension of the bacteria obtained by centrifuging the culture medium may be suspended in water or saline and applied as a rectal douche. Alternatively, antibiotically-active extracts may be prepared (see Group IV (b)).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE682993X | 1949-07-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB682993A true GB682993A (en) | 1952-11-19 |
Family
ID=6597281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17614/50A Expired GB682993A (en) | 1949-07-14 | 1950-07-13 | Production of strains of escherichia coli of high antibiotic activity against tubercle-bacilli |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB682993A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3627877A (en) * | 1967-04-04 | 1971-12-14 | Koninklijke Gist Spiritus | Treatment of schistosomiasis in mammals |
-
1950
- 1950-07-13 GB GB17614/50A patent/GB682993A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3627877A (en) * | 1967-04-04 | 1971-12-14 | Koninklijke Gist Spiritus | Treatment of schistosomiasis in mammals |
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