STRAIN OF YEAST HANSENULA SPECIES - A PRODUCER OF FOOD BIOMASS Russian patent published in 1997 - IPC

FIELD: microbiology, biotechnology. SUBSTANCE: invention relates to new industrial nonpathogenic strain of yeast Hansenula species Y-2133 that is tested in fermenter (working volume is 20 l) on mineral medium Rider where carbon source is molasses (concentrations - 3.75 and 5.0%), medium pH = 4.5-7.0, growth temperature - 30-37 C. Yield of dry biomass Hansenula species Y-2133 under conditions of periodic culturing is 72-73% of molasses level, consumption coefficient is 1.36-1.4, crude protein content in biomass is 54-56%. At accumulation stage in periodic culture yield is 96.0%, consumption coefficient is 1.04. At continuous culturing process productivity of the strain H. species Y-2133 is 6.2 g/l/h (dilution coefficient D = 0.2 h^-1) and 7.1 g/l/h (D = 0.25 h^-1). Strain H. species Y-2133 is tested in model experiments on Rider medium with 2% glucose and furfurol (0.02-0.5 vol.%). Strain can be grown on nutrient medium with 0.02-0.04 vol.% furfurol. EFFECT: enhanced productivity of new yeast strain. 2 tbl