Artículos de revistas
Production of bioethanol from carrot discards
Fecha
2012-11Registro en:
Aimaretti, Nora Rosa; Ybalo, Carolina; Rojas Cervantes, María; Plou Gasca, Francisco; Yori, Juan Carlos; Production of bioethanol from carrot discards; Elsevier; Bioresource Technology; 123; 11-2012; 727-732
0960-8524
CONICET Digital
CONICET
Autor
Aimaretti, Nora Rosa
Ybalo, Carolina
Rojas Cervantes, María
Plou Gasca, Francisco
Yori, Juan Carlos
Resumen
A revalorization of discarded carrots as substrate for the production of second-generation ethanol is proposed. In order to increase the fermentable sugar concentration of the musts two strategies were studied: Strategy 1 consisted in the enzymatic hydrolysis of bagasse must and Strategy 2 by which carrots were milled, dropped into distilled water and hydrolyzed with different enzymes prior to compressing and filtering to obtain carrot must. By applying Strategy 2 using 0.05% (v/v) of the enzyme Optimase CX255 at 70 C and pH 5.5 during 2.5 h, the fermentable sugars extracted increased 3.5 times. In this way, the production of 77.5 L of ethanol for each ton of discarded carrots was achieved. This process yielded bagasse as byproduct, which could be used for animal feed.