Updates on the pretreatment of lignocellulosic feedstocks for bioenergy production–a review

Karthik Rajendran, Edward Drielak, V. Sudarshan Varma, Shanmugaprakash Muthusamy, Gopalakrishnan Kumar

Research output: Contribution to journalReview articlepeer-review

112 Citations (Scopus)


Lignocellulosic biomass is the most abundant renewable energy bioresources available today. Due to its recalcitrant structure, lignocellulosic feedstocks cannot be directly converted into fermentable sugars. Thus, an additional step known as the pretreatment is needed for efficient enzyme hydrolysis for the release of sugars. Various pretreatment technologies have been developed and examined for different biomass feedstocks. One of the major concerns of pretreatments is the degradation of sugars and formation of inhibitors during pretreatment. The inhibitor formation affects in the following steps after pretreatments such as enzymatic hydrolysis and fermentation for the release of different bioenergy products. The sugar degradation and formation of inhibitors depend on the types and conditions of pretreatment and types of biomass. This review covers the structure of lignocellulose, followed by the factors affecting pretreatment and challenges of pretreatment. This review further discusses diverse types of pretreatment technologies and different applications of pretreatment for producing biogas, biohydrogen, ethanol, and butanol.

Original languageEnglish
Pages (from-to)471-483
Number of pages13
JournalBiomass Conversion and Biorefinery
Issue number2
Publication statusPublished - 2018 Jun 1

Bibliographical note

Publisher Copyright:
© 2017, Springer-Verlag Berlin Heidelberg.

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment


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