Stability study of furans, glucose and xylose under overliming conditions: Effect of sugar degradation products

Jeanne Andary, Jaqueline Maalouly, Rosette Ouaini, Hanna Chebib, Douglas N. Rutledge, Naim Ouaini

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Abstract Detoxification with Ca(OH)2 has been proved as an effective method for detoxifying various lignocellulosic hydrolysates liquor. The present work aims to study the effect of overliming conditions on synthetic solutions including glucose, xylose, hydroxymethylfurfural (HMF), furfural (FF), and their various mixtures. Experimental design in line with chromatographic analysis was used to explain the influence of three main factors with distinct levels: pH, temperature, and detoxification time. Furans showed stability under all the studied conditions: pH (0.2; 4; 6; 10, and 12), temperature (25 and 60 °C), and detoxification time (15, 30, and 60 min) even after reflux. Xylose and glucose degradation was observed at pH 12 and followed the same pattern at various treatments. These findings are of great importance revealing the influence of sugar degradation products released at pH 12, with a maximum absorbance of 280 nm, and correlating them to furans loss.

    Original languageEnglish
    Article number100722
    Pages (from-to)1-8
    Number of pages8
    JournalBioresource Technology Reports
    Volume15
    Early online date25 May 2021
    DOIs
    Publication statusPublished - Sep 2021

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