Cited by 1,132Biofuel production and bioconversionCatalysis for Biomass ConversionLignin and Wood Chemistry

Recent Trends in the Pretreatment of Lignocellulosic Biomass for Value-Added Products

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Baruah, Julie, Nath, Bikash Kar, Sharma, Ritika, Kumar, Sachin, Deka, Ramesh Chandra, Baruah, Deben Chandra, Kalita, Eeshan·2018·Frontiers in Energy Research

Abstract

Lignocellulosic biomass (LCB) is the most abundantly available bioresource amounting to about a global yield of up to 1.3 billion tons per year. The hydrolysis of LCB results in the release of various reducing sugars which are highly valued in the production of biofuels such as bioethanol and biogas, various organic acids, phenols, and aldehydes. The majority of LCB is composed of biological polymers such as cellulose, hemicellulose and lignin, which are strongly associated with each other by covalent and hydrogen bonds thus forming a highly recalcitrant structure. The presence of lignin renders the bio-polymeric structure highly resistant to solubilization thereby inhibiting the hydrolysis of cellulose and hemicellulose which presents a significant challenge for the isolation of the respective bio-polymeric components. This has led to extensive research in the development of various pretreatment techniques utilizing various physical, chemical, physicochemical and biological approaches which are specifically tailored towards the source biomaterial and its application. The objective of this review is to discuss the various pretreatment strategies currently in use and provide an overview of their utilization for the isolation of high-value bio-polymeric components. The article further discusses the advantages and disadvantages of the various pretreatment methodologies as well as addresses the role of various key factors that are likely to have a significant impact on the pretreatment and digestibility of LCB.

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Crossref · 10.3389/fenrg.2018.00141

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  • Effective conversion often requires feedstock preprocessing steps, such as mechanical shredding or milling, to improve handling efficiency.

    “Effective conversion often requires feedstock preprocessing steps, such as mechanical shredding or milling, to improve handling efficiency [129-131].”

    From Biofuels, E-Fuels, and Waste-Derived Fuels: Advances, Challenges, and Future Directions (2025) · cites this paper as [130]

    The Physical Pretreatment section (page unavailable) says size reduction makes subsequent conversion processes more effective and easier, and the Milling section identifies milling as a way to reduce particle size. The copy does not establish that shredding or milling improves feedstock handling efficiency specifically. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • For recalcitrant feedstocks like lignocellulosic biomass, additional pre-treatments are crucial to break down complex structures for biochemical conversion.

    “For recalcitrant feedstocks like lignocellulosic biomass, additional pre-treatments are crucial to break down complex structures for biochemical conversion [129,130].”

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Authors
Baruah, J., Nath, B. K., Sharma, R., Kumar, S., Deka, R. C., Baruah, D. C., & Kalita, E.
Affiliations
  • Tezpur University (IN)
  • Sardar Swaran Singh National Institute of Bio-Energy (IN)
Corresponding author
Kalita, Eeshan
Venue
Frontiers in Energy Research
Published
2018-12-18
Volume
6
ISSN
2296-598X (ISSN-L)
OpenAlex
W2903709198
Cited by
1,132
References
211
Citations by year
2026: 100 · 2025: 147 · 2024: 170 · 2023: 183 · 2022: 262 · 2021: 167 · 2020: 87 · 2019: 16
FWCI
26.96
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Energy Research (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
Department of Biotechnology, Ministry of Science and Technology, India (BT/PR16008/NER/95/47/2015)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
  • Physical Sciences › Engineering › Biomedical Engineering › Catalysis for Biomass Conversion
  • Physical Sciences › Engineering › Biomedical Engineering › Lignin and Wood Chemistry
Keywords
lignocellulosic biomass, biomass pretreatment, lignin removal, cellulose hydrolysis, hemicellulose, reducing sugars, biofuels, bioethanol, biogas, value-added products, lignocellulose recalcitrance

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