Beneficiation of eucalyptus tree barks in the context of an integrated biorefinery – Optimisation of accelerated solvent extraction (ASE) of polyphenolic compounds using response surface methodology

Andrew, Jerome EMasetlwa, JTesfaye, TSithole, Bishop B2021-04-072021-04-072020-12Andrew, J.E., Masetlwa, J., Tesfaye, T. & Sithole, B.B. 2020. Beneficiation of eucalyptus tree barks in the context of an integrated biorefinery – Optimisation of accelerated solvent extraction (ASE) of polyphenolic compounds using response surface methodology. Sustainable Chemistry and Pharmacy, 18. http://hdl.handle.net/10204/119622352-5541https://doi.org/10.1016/j.scp.2020.100327https://www.sciencedirect.com/science/article/pii/S2352554120305660http://hdl.handle.net/10204/11962Bark from trees obtained from sustainably managed plantations used in the production of timber, pulp and paper is an under-utilised waste in many countries across the world. However, in the context of an integrated biorefinery, they may serve as a valuable feedstock for the production of high-value products for increased revenue generation and mitigation of environmental impacts for the ailing forestry, timber, pulp and paper industry. In this study, optimum accelerated solvent extraction conditions were established for the recovery of total polyphenolic compounds (TPC) and total extractive content (TEC) from barks obtained from four Eucalyptus tree species (E.dunnii, E.grandis, E.smithii and E.nitens). Using a response surface methodology and Box-Behnken experimental design, optimum extraction conditions found were an extraction temperature of 117 °C, three extraction cycles, and a milled bark particle size class of 500–850 μm. E. smithii showed the highest TEC at 21.9% and the highest TPC at 4.7 g/100 g gallic acid equivalents (GAE).AbstractenBarkBiorefineryExtractionEucalyptusPolyphenolicWaste beneficiationBeneficiation of eucalyptus tree barks in the context of an integrated biorefinery – Optimisation of accelerated solvent extraction (ASE) of polyphenolic compounds using response surface methodologyArticleAndrew, J. E., Masetlwa, J., Tesfaye, T., & Sithole, B. B. (2020). Beneficiation of eucalyptus tree barks in the context of an integrated biorefinery – Optimisation of accelerated solvent extraction (ASE) of polyphenolic compounds using response surface methodology. Sustainable Chemistry and Pharmacy, 18, http://hdl.handle.net/10204/11962Andrew, Jerome E, J Masetlwa, T Tesfaye, and Bishop B Sithole "Beneficiation of eucalyptus tree barks in the context of an integrated biorefinery – Optimisation of accelerated solvent extraction (ASE) of polyphenolic compounds using response surface methodology." Sustainable Chemistry and Pharmacy, 18 (2020) http://hdl.handle.net/10204/11962Andrew JE, Masetlwa J, Tesfaye T, Sithole BB. Beneficiation of eucalyptus tree barks in the context of an integrated biorefinery – Optimisation of accelerated solvent extraction (ASE) of polyphenolic compounds using response surface methodology. Sustainable Chemistry and Pharmacy, 18. 2020; http://hdl.handle.net/10204/11962.TY - Article AU - Andrew, Jerome E AU - Masetlwa, J AU - Tesfaye, T AU - Sithole, Bishop B AB - Bark from trees obtained from sustainably managed plantations used in the production of timber, pulp and paper is an under-utilised waste in many countries across the world. However, in the context of an integrated biorefinery, they may serve as a valuable feedstock for the production of high-value products for increased revenue generation and mitigation of environmental impacts for the ailing forestry, timber, pulp and paper industry. In this study, optimum accelerated solvent extraction conditions were established for the recovery of total polyphenolic compounds (TPC) and total extractive content (TEC) from barks obtained from four Eucalyptus tree species (E.dunnii, E.grandis, E.smithii and E.nitens). Using a response surface methodology and Box-Behnken experimental design, optimum extraction conditions found were an extraction temperature of 117 °C, three extraction cycles, and a milled bark particle size class of 500–850 μm. E. smithii showed the highest TEC at 21.9% and the highest TPC at 4.7 g/100 g gallic acid equivalents (GAE). DA - 2020-12 DB - ResearchSpace DP - CSIR J1 - Sustainable Chemistry and Pharmacy, 18 KW - Bark KW - Biorefinery KW - Extraction KW - Eucalyptus KW - Polyphenolic KW - Waste beneficiation LK - https://researchspace.csir.co.za PY - 2020 SM - 2352-5541 T1 - Beneficiation of eucalyptus tree barks in the context of an integrated biorefinery – Optimisation of accelerated solvent extraction (ASE) of polyphenolic compounds using response surface methodology TI - Beneficiation of eucalyptus tree barks in the context of an integrated biorefinery – Optimisation of accelerated solvent extraction (ASE) of polyphenolic compounds using response surface methodology UR - http://hdl.handle.net/10204/11962 ER -24208