Cecilia Laluce

• Abstract

  The search for yeasts tolerant to high temperatures is becoming increasingly important due to the climatic changes and decreases in environmental water caused by increases in earth temperatures. Ethanol production of both first and second generation is a complex process constituted by long lasting open fermentations processes with cell reuse. Cells are exposed for months to a succession o…

  Populational dynamics and interactions between yeasts in fermentations of molasses and hydrolysates from sugarcane bagasse, AP.BIOEN.R

• Abstract

  The hydrolysis of cellulolytic materials with diluted acids is well known, but this process generates toxic products of hydrolysis. Other negative factors related to the acid hydrolysis are the corrosion and the high amounts of salts resulting from the acid neutralization. The production of enzymatic preparations at lower cost showing activity at lower pHs and resistance to its reuse are …

  Ethanol production from sugar-cane-bagasse: enzymatic pre-treatments, microbiological assays to evaluate toxicity and tolerance to hydrolysates at increasing temperatures, AP.BIOEN.R
• Optimization of ethanol production by saccharomyces cerevisiae and minimization of ethanol effects on cell survival at increasing temperatures., AR.EXT

(Only some records are available in English at this moment)

• Abstract

  The lactic acid is a weak organic acid produced by contaminant strains of lactic acid bacteria that usually compete with the yeast-cell population for nutrients, in a no-sterilize fed-bath process for fuel-ethanol production. The presence of lactic acid bacteria leads to decreases in the growth of the yeast population followed by a lowering in ethanol yields of a fed-bath process, reducin…

  Acid stress and cellular heterogeneity during successive cycles of ethanol production in the presence of lactic acid, BP.DR