Abstract: An improved process is provided for the continuous fermentation of sugar to ethanol in a series of fermentation vessels featuring yeast recycle which is independent of the conditions of fermentation occurring in each vessel at a particular point in time. The process facilitates the management of yeast levels in each fermentation vessel so as to provide an optimum overall rate of ethanol production.

Abstract: Acidic uricase is produced by fermentation of a microorganism of the genus Streptomyces. The enzyme is useful for the quantitative determination of uric acid in a sample.

Abstract: Crystalline maltose in good yields is obtained by subjecting a starch hydrolyzate having a maltose content of at least 75% and a viscosity of greater than 400 cps. to the action of glucoamylase, whereby the viscosity is reduced to below 400 cps. without any substantial reduction in the maltose content, and then subjecting the resulting hydrolyzate to a conventional crystallization operation.

Abstract: A method of manufacturing a bacterial preparation for ruminants which comprises taking out ruminant-stomach bacterial groups from the rumen of a ruminant grown under an excellent condition, repeatedly inoculating by the streak method and culturing the bacterial groups on a same selective medium containing an ammonium salt, gradually increasing the medium while serially passing the bacteria on the medium, allowing certain microorganisms of the bacterial groups to utilize the metabolic products of the bacteria, thereby obtaining bacteria having an improved ammonium-utilizing ability, and then using the improved bacteria as a principal ingredient of a bacterial preparation.