Abstract:
The invention relates to an improved method for producing pure riboflavin (vitamin B2) of modification B/C in granular form. Also disclosed is pure riboflavin in granular form, said pure riboflavin being provided with a bulk density of 0.45 to 0.7 g/ml, which is to be determined according to DIN 53468, and dissolution kinetics of at least 80 percent after being tableted.
Abstract:
Riboflavin produced by a microbial method is prepared in the form of free-flowing, non-dusting, spray-dried granules or microgranules as a feed additive by removing water from the mixture discharged from microbial fermentation for the preparation of riboflavin, wherein the mixture is subjected to a) a fluidized-bed spray-drying process b) a one-material spray-drying process or c) a disk spray-drying process without significant amounts of binders being added to the discharged fermentation mixture.
Abstract:
The invention relates to an improved method for producing pure riboflavin (vitamin B2) of modification B/C in granular form. Also disclosed is pure riboflavin in granular form, said pure riboflavin being provided with a bulk density of 0.45 to 0.7 g/ml, which is to be determined according to DIN 5346 8, and dissolution kinetics of at least 80 percent after being tableted.
Abstract:
Process for producing microbially prepared riboflavin in the form of spray or microgranules which are free-flowing and non-dusting as feed additive by removing water from the discharge from microbial fermentations for preparing riboflavin, characterised in that the fermentation discharge is subjected to a) a spray fluidised bed drying b) a single-component nozzle atomiser drying or c) a disc atomiser drying without adding substantial amounts of binders to the fermentation discharge.
Abstract:
. Cyclohexene derivatives of the formula I I where R1 and R2 are hydrogen or tert.-butyl and N and X are members of a heterocyclic ring in which X is an alkylene chain of four, five or six members, one of which may be a hetero-atom, such as oxygen, and where the alkylene radicals are unsubstituted or substituted by alkyl or by -CH2OH or its acetyl or propionyl derivative, and their salts are used in fungicides.
Abstract:
Process for producing microbially prepared riboflavin in the form of spray or microgranules which are free-flowing and non-dusting as feed additive by removing water from the discharge from microbial fermentations for preparing riboflavin, characterised in that the fermentation discharge is subjected to a) a spray fluidised bed drying b) a single-component nozzle atomiser drying or c) a disc atomiser drying without adding substantial amounts of binders to the fermentation discharge.
Abstract:
A process is described for purifying an amino acid-containing solution by means of electrodialysis, wherein an amino acid-containing solution is employed which is obtained from the fermentation for producing at least one amino acid.
Abstract:
A process for the preparation of D-carbamyl- alpha -aminoacids of the formula where R has the meanings given in the description, by enzymatic cleavage of the corresponding hydantoins by means of thermophilic, non-sporulating hydantoin-cleaving micro-organisms or of extracts therefrom.