Abstract

VERA BRAVO, Jesus Adrian et al. Cassava and plantain residues as a source of fermentable sugars. Ciencia en Desarrollo [online]. 2024, vol.15, n.1, pp.205-211.  Epub Oct 15, 2024. ISSN 0121-7488.  https://doi.org/10.19053/01217488.v15.n1.2024.15495.

Cassava and bannana residues are lignocellulosic biomass, with potential for revaluation through biorefining schemes based on fermentative processes. The prodution of sugars is the stage prior to the fermentation process, hence its importance in studying them. In this research, previous characterization of cassava peels (CY) and banana peels (CP), a chemical pretreatment was carried out, in order to evaluate its effectiveness in obtaining total reducing sugars (ART). A 23 factorial design of experiments was proposed, whose factors were: type of hydrolysis (acid, alkaline), concentration of the hydrolyzing agent (1.2% v/v) and reation time (30, 60 min). The highest ART content for the CP was 2.35 g/L and was obtained by working with 1 % NaOH. In CY, an ART concentration of 1.95 g/L was reached when using 2% H2SO4. For both residues, the best results were found with a reation time of 60 minutes. Through the ANOVA it was known that the factors by themselves do not exert a significant influence on the prodution of ART, although it was shown that there is an interation between them. The relationship that exists between the pretreatment methods used in the prodution of ART, is a preliminary step to fermentative processes through which it is possible to obtain a variety of bioproducts via biotechnology.

Keywords : Lignocellulosic biomass; chemical hydrolysis; agricultural waste.

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