01609nam a2200217Ia 4500001088000000002005100880008003700931010001100968530002200979650003901001650003301040650003401073650003201107650003701139650003301176700004401209700004301253700005701296942001901353999001901372IA_Ethanol production from pineapple waste juice batch fermentation (Ananas comosus L.) by the bacteria Zymomonas mobilis with and without controlling pH, and by the yeast Saccharomyces cerevisiae without controlling pH was studied. Respose variables were ethanol (%), total sugars (%), titratable acidity (%) and pH. A randomized complete design was used. Highest ethanol production was obtained by Z. mobilis without controlling pH (6.3 %), comparing with Z. mobilis with controlling pH (4.92%) and with S. cerevisiae without controlling pH (5.41%). Optimum conditions to produce ethanol with Z. mobilis were: temperature 30ºC, approximately 11% total sugars, about 0.3% titratable acidity and pH of about 5.5. The optimum conditions to produce ethanol from S. cerevisiae were: temperature 30ºC, about 10% total sugar, approximately 1% titratable acidity and pH of about 3.4.ETANOL A PARTIR DE LA  FERMENTACION DE JUGO DE DES220117s    xx            000 0 und d  a184036  aDisponible en PDF  aDesechosxFermentación  9156281  aEthanol production  9156282  aPineapplesx Wastes  9156283  aPiñasxDesechos  9156284  aProducción de etanol  9156285  aWastesxFermentation9156286  aEsparza Torres, Félix, asesor9163648  aGómez Cruz, Adalberto, dir. 9148224  aGoytia Jiménez, María Antonieta, asesor 9145712  cTESIS R53 2009  c184036d184036