Steve S. Helle
University of British Columbia
5 Papers
5 Citations
Steve S. Helle is an academic researcher from University of British Columbia. The author has contributed to research in topics: Fermentation & Yeast. The author has an hindex of 4, co-authored 5 publications.
Chat about Author
Papers
Effect of surfactants on cellulose hydrolysis
TL;DR: Sophorolipid had the greatest effect on cellulose hydrolysis when it was present from the beginning of the experiment and when the enzyme/cellulose ratio was low.
288
Production of a recombinant protein using Pichia pastoris grown in evaporator condensate from a Kraft pulp mill
TL;DR: The feasibility of cultivating a recombinant strain of the methylotrophic yeast, Pichia pastoris, on combined evaporator condensate from a Kraft mill was investigated and lipase activity was determined titrimetrically and was found to occur only in the presence of yeast peptone.
4
Effect of substrate variability on activated sludge kinetics during the treatment of bleached kraft mill effluent
Steve S. Helle,Sheldon J.B. Duff +1 more
TL;DR: The effect of SRT on activated sludge treatment kinetics and stoichiometry during bleached kraft mill effluent (BKME) treatment were investigated and it was found that the BKME respirometric kinetics were constant with respect to SRT.
1
Effect of inhibitory compounds found in biomass hydrolysates on growth and xylose fermentation by a genetically engineered strain of S. cerevisiae
TL;DR: The effect of inhibitors on the recombinant xylose fermenting strain Saccharomyces cerevisiae 259ST was compared to three reference strains and was found to be as hardy as the reference strains towards acetic acid, ammonium, furfural, and osmotic effects, which are inhibitory compounds in SSL.
Xylose fermentation by genetically modified Saccharomyces cerevisiae 259ST in spent sulfite liquor
TL;DR: Using genetically modified Saccharomyces cerevisiae 259ST, which had been genetically modified to ferment xylose, was compared with the parent strain, 259A, and an SSL adapted strain, T2, for ethanol production during SSL fermentation, up to 130% more ethanol can be produced compared to fermentations using non-xylose fermenting yeast.