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ORIGINAL RESEARCH article

Front. Bioeng. Biotechnol.
Sec. Bioprocess Engineering
Volume 12 - 2024 | doi: 10.3389/fbioe.2024.1465328
This article is part of the Research Topic Isolation, Modification, and Characterization of the Constituents in Biomass and Their Bio-based Applications - Volume III View all 4 articles

Comprehensive Insights of Pretreatment Strategies on the Structures and Bioactivities Variation of Lignin-Carbohydrate Complexes

Provisionally accepted
Chen Huang Chen Huang 1*Chen Su Chen Su 1Xiu Wang Xiu Wang 2Yongjun Deng Yongjun Deng 1Zhongjian Tian Zhongjian Tian 3Guigan Fang Guigan Fang 1
  • 1 Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, China
  • 2 School of Materials Science and Engineering, Faculty of Information and Engineering Science, Peking University, Beijing, Beijing Municipality, China
  • 3 State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Jinan, Shandong Province, China

The final, formatted version of the article will be published soon.

    The lignin-carbohydrate complex (LCC) displays great potential in vast industrial applications due to its unique structural features and bioactivities. However, the elucidation of how various pretreatment methods affect the structure and bioactivities remains unaddressed. Herein, the effects of different pretreatment strategies on the structure alterations and bioactivity variations of LCC were comprehensively investigated. The results showed that compared to physical or chemical pretreatments, biological pretreatment was the most effective approach in improving the bioactivities of LCC. The LCC from biological pretreatment (enzymatic hydrolysis, ELCC4) had more functional groups while the lower weight-average molecular weight (Mw) and polydispersity index (PDI) were well-endowed. The highest antioxidant abilities against ABTS and DPPH of ELCC4 were high up to 95% and 84%, respectively. Furthermore, ELCC4 also showed the best ultraviolet (UV)-blocking rate of 96%, which was increased by 6% and 2% compared to LCC8 (physical pretreatment) and LLCC4 (chemical pretreatment). This work prospectively boosts the understanding of pretreatment strategies on the structures and bioactivities variation of LCC and facilitates its utilization as sustainable and biologically active materials in various fields.

    Keywords: Lignin-carbohydrate complex, Pretreatment methods, Structure variation, antioxidant, Anti-ultraviolet

    Received: 16 Jul 2024; Accepted: 09 Aug 2024.

    Copyright: © 2024 Huang, Su, Wang, Deng, Tian and Fang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Chen Huang, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.