da Costa, Ricardo M F, Bosch, Maurice, Simister, Rachael et al. (3 more authors) (2022) Valorisation Potential of Invasive Acacia dealbata, A. longifolia and A. melanoxylon from Land Clearings. Molecules (Basel, Switzerland). 7006. ISSN 1420-3049
Abstract
Acacia spp. are invasive in Southern Europe, and their high propagation rates produce excessive biomass, exacerbating wildfire risk. However, lignocellulosic biomass from Acacia spp. may be utilised for diverse biorefinery applications. In this study, attenuated total reflectance Fourier transform infrared spectroscopy (FTIR-ATR), high-performance anion-exchange chromatography pulsed amperometric detection (HPAEC-PAD) and lignin content determinations were used for a comparative compositional characterisation of A. dealbata, A. longifolia and A. melanoxylon. Additionally, biomass was treated with three white-rot fungi species ( Ganoderma lucidum, Pleurotus ostreatus and Trametes versicolor), which preferentially degrade lignin. Our results showed that the pre-treatments do not significantly alter neutral sugar composition while reducing lignin content. Sugar release from enzymatic saccharification was enhanced, in some cases possibly due to a synergy between white-rot fungi and mild alkali pretreatments. For example, in A. dealbata stems treated with alkali and P. ostreatus, saccharification yield was 702.3 nmol mg -1, which is higher than the samples treated only with alkali (608.1 nmol mg -1), and 2.9-fold higher than the non-pretreated controls (243.9 nmol mg -1). By characterising biomass and pretreatments, generated data creates value for unused biomass resources, contributing to the implementation of sustainable biorefining systems. In due course, the generated value will lead to economic incentives for landowners to cut back invasive Acacia spp. more frequently, thus reducing excess biomass, which exacerbates wildfire risk.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | Lignin/chemistry,Acacia/chemistry,Trametes/metabolism,Biomass,Alkalies,Sugars |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Biology (York) |
Depositing User: | Pure (York) |
Date Deposited: | 07 Nov 2022 15:00 |
Last Modified: | 16 Oct 2024 18:50 |
Published Version: | https://doi.org/10.3390/molecules27207006 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.3390/molecules27207006 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:193071 |