[Growth and biomass accumulation by several strains of Pseudomonas on nutrient with ethanol]

The capacity to grow in a mineral medium with ethanol as a sole carbon source was studied in 147 Pseudomonas strains. All of the strains can grow in this medium. The biomass accumulation in the mineral medium with ethanol (1%) and maize extract (0.2%) is 2.5--5.0 times higher than without the latter. Strains which accumulate up to 3.5 g of dry biomass per litre (containing 62--66% of protein and 5.3% of nucleic acids) in the mineral medium with ethanol (1%) and maize extract (0.2%) have been selected. The quantitative content of essential amino acids satisfies the requirements while that of lysine, threonine, valine and leucine is twice as high.