Effect of NaOH-catalyzed organosolv pretreatment on the co-production of ethanol and xylose from poplar

Li, Caiqun; Fan, Meishan; Xie, Jun; Zhang, Hongdan

doi:10.1016/j.indcrop.2023.116774

Cited by 8 publications

(5 citation statements)

References 57 publications

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“…These modifications improve enzymatic hydrolysis yields by rendering the cellulose surface readily available to enzymes [61,62]. These effects have been observed in various alkaline pretreatments, including wheat straw [58], Chloris barbata [12], Durio zibethinus [17], poplar [52], and sugarcane bagasse [60].…”

Section: Effect Of Pretreatment On Crystalline Structurementioning

confidence: 98%

“…However, the pretreatment temperature had distinct effects on the reduction in AIL and ASL. Therefore, subjecting the feedstock to high-temperature NaOH pretreatment can disrupt the complex structure of V. pusilla feedstocks by eliminating both lignin and hemicellulose components [52].…”

Section: Effect Of Temperature On Biomass Compositionmentioning

confidence: 99%

“…This implies that modifying the concentration of NaOH and temperature during sample pretreatment did not transform cellulose I into cellulose II but increased the relative CrI of the treated materials. NaOH-aided thermal pretreatment at 75 to 125 • C [14] diminished amorphous components (glucan, xylan, arabinan, and lignin), enhancing the proportion of relative crystalline cellulose in pretreated solids, leading to a greater CrI value [19,38,47,52,[56][57][58][59][60].…”

Section: Effect Of Pretreatment On Crystalline Structurementioning

confidence: 99%

“…In contrast with the standard medium, non-detoxified BH medium significantly affected yeast cell proliferation (Figure 12). Therefore, the BH medium might be contaminated with inhibitory compounds, such as phenolic compounds and aliphatic acids, which were generated during the alkaline pretreatment of the raw material preparation [52,[68][69][70]. These inhibitors suppress S. cerevisiae TISTR 5339 growths but have no impact on bioethanol production [6,7,32,71,72].…”

Section: Ethanol Fermentationmentioning

confidence: 99%

“…Notably, the NaOH pretreatment of lignocellulosic materials leads to delignification, resulting in the production of lignin derivatives, particularly phenolic compounds, and aliphatic acids [52,[68][69][70]. These chemical compounds effectively inhibit yeast cell proliferation and result in decreased xylitol production [69,76,77].…”

Section: Xylitol Productionmentioning

confidence: 99%

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Physicochemical Pretreatment of Vietnamosasa pusilla for Bioethanol and Xylitol Production

Wongleang,

Premjet,

Premjet

2023

Polymers

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The consumption of fossil fuels has resulted in severe environmental consequences, including greenhouse gas emissions and climate change. Therefore, transitioning to alternative energy sources, such as cellulosic ethanol, is a promising strategy for reducing environmental impacts and promoting sustainable low-carbon energy. Vietnamosasa pusilla, an invasive weed, has been recognized as a high potential feedstock for sugar-based biorefineries due to its high total carbohydrate content, including glucan (48.1 ± 0.3%) and xylan (19.2 ± 0.4%). This study aimed to examine the impact of NaOH pretreatment-assisted autoclaving on V. pusilla feedstock. The V. pusilla enzymatic hydrolysate was used as a substrate for bioethanol and xylitol synthesis. After treating the feedstock with varying concentrations of NaOH at different temperatures, the glucose and xylose recovery yields were substantially higher than those of the untreated material. The hydrolysate generated by enzymatic hydrolysis was fermented into bioethanol using Saccharomyces cerevisiae TISTR 5339. The liquid byproduct of ethanol production was utilized by Candida tropicalis TISTR 5171 to generate xylitol. The results of this study indicate that the six- and five-carbon sugars of V. pusilla biomass have great potential for the production of two value-added products (bioethanol and xylitol).

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