摘要:
THIS INVENTION RELATES TO A METHODS FOR THE PRODUCTION OF ANTIMICROBIAL AGENTS IN CRUDE FILTRATES, WHOLE BROTHS OR CELL EXTRACTS OF MICROORGANISMS, WHICH COMPRISES TREATING THESE WITH A SOURCE OF POSITIVE HALOGEN, SUCH AS AN N-HALOAMIDE, N-HALOIMIDE OR A HALOGENATING ENZYME.
摘要:
ALPHA AMYLASE CAN BE PRODUCED BY FERMENTING, UNDER AEROBIC CONDITIONS, NUTRIENT MEDIA CONTAINING AT LEAST A PORTION OF FOWL EXCREMENT. THE FERMENTATION IS ACCOMPLISHED BY MEANS OF MICROORGANISMS SELECTED FROM THE GROUP CONSISTING OF THOSE PSEUDOMONAS, CORYNEBACTERIA, CELLUMONAS, BACILLUS, ASPERGILLUS AND CANDIDA CAPABLE OF PRODUCING ALPHA AMYLASE BY METABOLIZING FOWL EXCREMENT AS A SOURCE OF ASSIMILABLE CARBON AND/OR A SOURCE OF ASSIMILABLE NITROGEN. PARTICULARLY GOOD PRODUCTION IS OBTAINED BY USING FIVE NEWLY DISCOVERED STRAINS, BACILLUS CEREUS A.T.C.C. NO. 21768, BACILLUS CEREUS A.T.C.C. NO. 21769, BACILLUS CEREUS A.T.C.C. NO. 2170, BACILLUS CEREUS A.T.C.C. NO. 21771, BACILLUS CEREUS A.T.C.C. NO. 21772. WHEAT CHAFF IS AN EXCEPTIONALLY USEFUL NUTRIENT INGREDIENT AND GLYCINE IS A PARTICULARLY EFFECTIVE STIMULANT FOR SOME OF THESE PROCESSES.
摘要:
6,6-Difluoro-11 Alpha ,16 Alpha ,17 Alpha -trihydroxy-4-pregnen3,20-dione 16,17-ketal 17-ketal is prepared by a process involving the 11 Alpha -microbiological hydroxylation of the corresponding 16 Alpha ,17 Alpha -dihydroxy steroid. The 11 Alpha -hydroxyl is converted sequentially to the 9,11-double bond, 9,11-epoxy and 9 Alpha -fluoro-11 Beta -hydroxyl. Optionally the 1,2-position is dehydrogenated and a 21-hydrogen converted to a 21-hydroxy, acyloxy, bromine or chlorine. The latter steroid ketals are highly active anti-inflammatory and glucocortical agents.
摘要:
THIS INVENTION IS ADDRESSED TO AN IMPROVED METHOD FOR THE PREPARATION OF GLUCOSE OXIDASE IN WHICH GLUCOSE OXIDASE-PRODUCING STRAINS OF THE GENERA ASPERGILLUS AND PENICILLIUM ARE CULTIVATED IN MEDIUM HAVING A LOW CARBOHYDRATE CONTENT IN WHICH THE CARBOHYDRATE HAS A DEXTROSE EQUIVALENT OF 60-85, IN THE PRESENCE OF HYDRATED MAGNESIUM SULFATE, MONOPOTASSIUM PHOSPHATE, AND A SOURCE OF ASSIMILABLE NITROGEN IN THE FORM OF A NITRATE SALT OR AN AMMONIUM SALT.
摘要:
CYTIDINE DIPHOSPHATE CHOLINE IS PREPARED BY CUTLTURING AN AQUEOUS REACTION LIQUOR CONTAINING (A) AT LEAST ONE OF THE CLASS CONSISTING OF CHOLINE OR PHOSPHORYL CHOLINE; (B) AT LEAST ONE OF THE CLASS CONSISTING OF CYTIDINE, CYTINDINE 5''MONOPHOSPHATE, CYTIDINE-5''-DIPHOSPHATE OR CYTIDINE-5''-TRIPHOSPHATE; (C) ENZYME SYSTEMS OF BACTERIA, YEASTS OR MOLDS; (D) PHOSPHATE ION AND (E) AT LEAST ONE OF THE CLASS CONSISTING OF MAGNESIUM ION AND MANGANESE ION AND RECOVERING CYTIDINE DIPHOSPHATE CHOLINE FROM SAID CULTURING LIQUOR.
摘要:
A process is disclosed for the preparation of a 7 Beta -(4carboxybutanamide) ceph-3-3em-4-carboxylic acid or a 7 Beta -(5carboxy-5-oxopentamido) ceph-3-em-4-carboxylic acid by subjecting a 7 Beta -(D-5-amino-5-carboxypentamido) ceph-2-em-4-carboxylic acid to the action of a cell-free fungal D-amino acid oxidase. The modified cephalosporin compounds produced exhibit antimicrobial activity and are useful as presursors in the synthesis of 7-aminocephalosporanic acid and 7 Beta -acylamido analogues of cephalosporin C.
摘要:
A process for producing fatty acid esters of sugars by fermentation which comprises culturing a hydrocarbon-assimilating micro-organism under aerobic conditions in an aqueous nutrient medium containing hydrocarbons as the main source of carbon. Good yields are obtained using n-paraffins of six to 25 carbon atoms or kerosene as the hydrocarbon in the medium. Exemplary microorganisms are those belonging to the genus Arthrobacter, Brevibacterium, Micrococcus, Corynebacterium, Mycobacterium, Candida, or Aspergillus.
摘要:
5-(aminoalkylamino)-6(or 7)-halo-8-quinolinemethanols, having schistosomacidal activity, are prepared by subjecting the correspoonding 6(or 7)-halo-5-(aminoalkylamino)-8-methylquinoline to the fermentative enzymatic action of a micro-organism capable of effecting oxidation of the 8-methyl group to 8-hydroxymethyl, said micro-organism being of an order selected of the group consisting of Moniliales, Mucorales, Sphaeriaelses, Sphaeropsidales, Melanconiales and Actinomycetales.
摘要:
Method for the biochemical isolation of l-menthol. Specifically, an improved method for the optical resolution of racemic menthol utilizing an enzyme, carboxylic ester hydrolase, produced by the action of a micro-organism belonging to the class of Penicillium, Gliocladium, Trichoderma, Geotrichum, Aspergillus, Pullaria, Fusarium, Absidia, Cunninghamella, Rhizopus, Actinomucor, Chlamyclomucor, Mucor, Gibberella, Streptomyces or Bacillus. The l-menthol may be utilized in perfumes, medicines, etc.