The study was taken up to assess if the media constituents played any role in governing the variable colony characteristics or pathogenicity of the bacterial wilt pathogen, Ralstonia solanacearum cultured on the widely employed Kelman medium. The effects due to the constituents 2,3,5-triphenyl tetrazolium chloride (TTC), peptone, casein hydrolysate and glucose on colony characteristics were inv...

Agglutinins for Bacterium pullorum in hens' eggs . . . . . . . . . . . . . . . . . . . . . . . . . . 493 Alexander, Harry I., Larsen, Ntis P , Haigh, A. V. R., and Paddock, Royce. The failure of peptone to protect against anaphylactic shock and allergic conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 409 Alexande...

Industrially important extracellular lipase enzyme production was explored by utilizing microbial strain isolated from dairy effluents. Alcaligenes viscosus DOGE-1 strain isolated from dairy waste waters proved to produce extracellular lipase. Various growth factors were attempted to maximize the lipase production by this strain. Growth factors like NH4PO4, Peptone, Urea coupled with peptone, K...

At. Most bacteriologists held that the old Voges?SKauer's test (1898) was not a satisfactory test for the differentiation of the coli-serogenes group of organisms. During carbohydrate fermentation by the aerogenes group of bacilli, acetoin (acetylmethyl carbinol) is formed, and this is detected by caustic potash and peptone. Acetoin is oxidized to diacetyl, and this reacts with caustic potash a...

Lovastatin production is dependent on the substrates provided. We investigated how several carbon and nitrogen sources in the medium affect lovastatin production by Monascus pilosus. M. pilosus required a suitable concentration of organic nitrogen peptone for high lovastatin production. As sole carbon source with peptone, although glucose strongly repressed lovastatin production, maltose was re...

The Cu2+-tolerant yeast Yarrowia lipolytica accumulated Cu2+ until the late logarithmic phase. Thereafter, Cu2+ was temperature-dependently extruded into phosphate-limited culture medium containing high concentrations of heavy metal ions but not into 10 mM 2-(N-morpholino)ethane sulfonic acid (MES) buffer (pH 6.0). Peptone in the culture medium played an important role in the extrusion, which p...