Reetu Saini; Reeta Rani Singhania; Anil Kumar Patel; Chiu-Wen Chen; Gregorz Piechota; Cheng-Di Dong

DOI:

Abstract

Globally, the demands for sustainably sourced functional foods like prebiotic oligosaccharides have been constantly increasing. This study assessed the potential of pineapple leaves (PL) as lignocellulosic feedstock for sustainable production of and hemicellulose-derived oligosaccharides through its hydrothermal pretreatment (HT) followed by controlled enzymatic hydrolysis. PL was subjected to HT at 160, 175, and 190 °C for 20, 30, 60, and 90 min without any catalyst for xylooligosaccharide (XOS) production, whereas, the resulting solid content after HT was subjected to controlled enzymatic hydrolysis by commercial cellulase using (0.5–5 mM) for glucooligosaccharides (GOS) production. HT at 160 °C for 60 min resulted in maximum yield of XOS and GOS at 23.7 and 18.3 %, respectively, in the liquid phase. Controlled enzymatic hydrolysis of HT treated (160 °C) PL solids for 20 and 30 min yielded ∼ 174 mg cellobiose/g dry biomass within 24 h, indicating overall high production.

Keywords

Conduritol B epoxide ; Pineapple leaves ; Hydrothermal pretreatment ; Prebiotics ; Xylooligosaccharides ; Glucooligosaccharides ; Sustainable development goals no. 3

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