Bioethanol Production from Sugarcane Bagasse by a Novel Brazilian Pentose Fermenting Yeast Scheffersomyces shehatae UFMG-HM 52.2: Evaluation of Fermentation Medium

Figure 2

Scanning electron microscopic (SEM) analysis showing the surface images of sugarcane before (a) and after (b) dilute acid pretreatment (diluted H₂SO₄ 98%, 20 minutes at 121°C). (a1)/(b1), (a2)/(b2), and (a3)/(b3) are referents to a magnification of 500, 1000, and 5000x, respectively.

(a)

(b)