摘要:
This process consists in taking vegetal juice obtained by pressing at least one vegetal substance, adjusting its pH before sulfiting it, clarifying it, then subjecting it to microfiltration through a membrane. The microfiltered juice is subjected to controlled alcoholic fermentation in a carbon dioxide atmosphere. This process results in new alcoholic drinks having very pleasant organoleptic properties. An installation for industrially carrying out the process applied to cane sugar results in cane wine and pure cane spirit.
摘要:
Disclosed are microbial compositions having unique combinations of microbial species which are used in plant material recycling and retting. Also disclosed microbial inoculants which contains such a microbial composition, water, and an optional carbon source. The microbial compositions and microbial inoculants are particularly useful in recycling high lignin-content plant material. Methods of making and methods of using the microbial compositions and the microbial inoculants are also described.
摘要:
A process is provided for the production of glycogens or an extract rich in glycogens from yeast cells, and a cosmetic composition containing them. A given quantity of yeast cells, from a specific culture or recovered as residues of a fermentation process, is subjected to an operation of enrichment in intracellular glycogens by culturing in two phases in the presence of a carbon source. The metabolism of the yeast cells is then stopped. The membranes of the yeast cells are then at least partially disintegrated to free intracellular substances, and the freed intracellular substances are subjected to at least one precipation to precipitate glycogens. A cosmetic composition comprising the glycogens is formulated in admixture with a dermatologically acceptable excipient.
摘要:
A process for asymmetrically hydrogenating through the use of microorganisms a double bond connected to tertiary carbon atom in an olefinic aliphatic compound to produce a tertiary, optically active aliphatic compound useful as an intermediate for optically active Vitamins E and K.
摘要:
New intermediate, an optically active (1S,5R)-7,7-alkylenedioxy-2-alkoxycarbonylbicyclo[3.3.0]octan-3-one which is useful for the synthesis of an optically active carbacyclin. This intermediate is prepared, as a non-reduced compound, from a racemic compound, (1SR,5RS)-7,7-alkylenedioxy-2-alkoxycarbonyl-cis-bicyclo[3.3.0]octane-3-one, by treatment of the racemic compound with a microorganism. The microorganism has an ability of specifically reducing the keto group of the (1R,5S) epimer of the racemic compound.
摘要:
A continuous alcohol manufacturing process using yeast comprising a zone where a conventional yeast (Yeast B) which has an alcohol producing activity is mainly present (zone of Yeast B); a zone disposed in the fore part of said zone of Yeast B where a yeast (Yeast A) which has an alcohol producing activity and is superior in sugar resistance as compared with Yeast B is mainly present (zone of Yeast A); and a zone disposed in the rear part of said zone of Yeast B where a yeast (Yeast C) which has an alcohol has an alcohol producing activity and is superior in alcohol resistance as compared with Yeast B is mainly present (zone of Yeast C), wherein a substrate solution is supplied to said zone of Yeast A thereby to effect alcohol fermentation; the resulting fermentation liquid is introduced in said zone of Yeast B thereby to effect alcohol fermentation; the resulting fermentation liquid is further introduced in said zone of Yeast C thereby to effect alcohol fermentation; and then a product alcohol broth is obtained from said zone of Yeast C.
摘要:
The disclosure relates to a novel process for the microbiological production of the enzyme invertase by culturing yeast strains of the variety Saccharmyces carlsbergensis Hansen under aerobic conditions in an aqueous nutrient medium.
摘要:
Novel DNA constructs and host cells comprising the same are disclosed. DNA constructs comprise a transcription unit (e.g. operon) comprising DNA sequences encoding for ribonucleotide reductase and thioredoxin or a uridine kinase gene and/or a dCTP deaminase gene. In preferred embodiments the constructs comprising DNA sequences encoding for ribonucleotide reductase and thioredoxin further comprise DNA sequences encoding for thymidylate synthase and/or transcription units comprising sequences encoding for uridine kinase preferably together with dCTP deaminase. In particularly preferred embodiments, the host cells comprise constructs having all of the above characteristics wherein the host cell displays repressed or no uracil DNA glycosylase activity. This may be achieved by removal of the host cell ung gene. Use of host cells in the manufacture of pyrimidine deoxyribonucleotides e.g. thymidine is also disclosed.
摘要:
A process of producing 2-keto-L-gulonic acid by fermentative conversion of L-sorbose utilizing a fermentation system composed of component produced from a microorganism having the identifying characteristics of strain DSM No. 4025 and a yeast component.
摘要:
New intermediate, an optically active (1S,5R)-7,7-alkylenedioxy-2-alkoxycarbonylbicyclo[3.3.0]octan-3-one which is useful for the synthesis of an optically active carbacyclin. This intermediate is prepared, as a non-reduced compound, from a racemic compound, (1SR,5RS)-7,7-alkylenedioxy-2-alkoxycarbonyl-cis-bicyclo[3.3.0]octan-3-one, by treatment of the racemic compound with a microorganism. The microorganism has an ability of specifically reducing the keto group of the (1R,5S) epimer of the racemic compound.