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Laccase mediated delignification of pineapple leaf waste: an ecofriendly sustainable attempt towards valorization

BACKGROUND: Escalating energy security, burgeoning population and rising costs of fossil fuels have focussed our attention on tapping renewable energy sources. As the utilization of food crops for biofuel production culminates into food vs. fuel dilemma, there is an intensive need for alternatives....

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Autores principales: Banerjee, Rintu, Chintagunta, Anjani Devi, Ray, Subhabrata
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6661841/
https://www.ncbi.nlm.nih.gov/pubmed/31384806
http://dx.doi.org/10.1186/s13065-019-0576-9
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author Banerjee, Rintu
Chintagunta, Anjani Devi
Ray, Subhabrata
author_facet Banerjee, Rintu
Chintagunta, Anjani Devi
Ray, Subhabrata
author_sort Banerjee, Rintu
collection PubMed
description BACKGROUND: Escalating energy security, burgeoning population and rising costs of fossil fuels have focussed our attention on tapping renewable energy sources. As the utilization of food crops for biofuel production culminates into food vs. fuel dilemma, there is an intensive need for alternatives. Production of biofuels from lignocellulosic biomass owing to its profuse availability and high holocellulose content is a promising area for research. RESULTS: In the present study, pineapple leaf, an agro-industrial waste was pretreated with laccase to enhance the enzymatic digestibility of the substrate for improved production of reducing sugar. Variables determining enzymatic delignification of pineapple leaf waste have been optimized by response surface methodology based on central composite design. Maximum delignification of 78.57%(w/w) resulted in reducing sugar of 492.33 ± 3.1 mg/g in 5.30 h. The structural changes in pineapple leaf waste, after laccase treatment, were studied through Fourier transformed infrared spectroscopy, X-ray diffraction and Scanning electron microscopy. Specific surface area, pore volume, and pore diameter of the substrate were studied using the Brunauer–Emmett–Teller and Barrett–Joyner–Halenda methods and found a significant increase in the aforementioned parameters after delignification. CONCLUSION: Laccase mediated delignification of pineapple leaf waste is a cleaner sustainable process for enhanced production of reducing sugar which can accomplish the demand for biofuels. [Image: see text]
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spelling pubmed-66618412019-08-05 Laccase mediated delignification of pineapple leaf waste: an ecofriendly sustainable attempt towards valorization Banerjee, Rintu Chintagunta, Anjani Devi Ray, Subhabrata BMC Chem Research Article BACKGROUND: Escalating energy security, burgeoning population and rising costs of fossil fuels have focussed our attention on tapping renewable energy sources. As the utilization of food crops for biofuel production culminates into food vs. fuel dilemma, there is an intensive need for alternatives. Production of biofuels from lignocellulosic biomass owing to its profuse availability and high holocellulose content is a promising area for research. RESULTS: In the present study, pineapple leaf, an agro-industrial waste was pretreated with laccase to enhance the enzymatic digestibility of the substrate for improved production of reducing sugar. Variables determining enzymatic delignification of pineapple leaf waste have been optimized by response surface methodology based on central composite design. Maximum delignification of 78.57%(w/w) resulted in reducing sugar of 492.33 ± 3.1 mg/g in 5.30 h. The structural changes in pineapple leaf waste, after laccase treatment, were studied through Fourier transformed infrared spectroscopy, X-ray diffraction and Scanning electron microscopy. Specific surface area, pore volume, and pore diameter of the substrate were studied using the Brunauer–Emmett–Teller and Barrett–Joyner–Halenda methods and found a significant increase in the aforementioned parameters after delignification. CONCLUSION: Laccase mediated delignification of pineapple leaf waste is a cleaner sustainable process for enhanced production of reducing sugar which can accomplish the demand for biofuels. [Image: see text] Springer International Publishing 2019-04-23 /pmc/articles/PMC6661841/ /pubmed/31384806 http://dx.doi.org/10.1186/s13065-019-0576-9 Text en © The Author(s) 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research Article
Banerjee, Rintu
Chintagunta, Anjani Devi
Ray, Subhabrata
Laccase mediated delignification of pineapple leaf waste: an ecofriendly sustainable attempt towards valorization
title Laccase mediated delignification of pineapple leaf waste: an ecofriendly sustainable attempt towards valorization
title_full Laccase mediated delignification of pineapple leaf waste: an ecofriendly sustainable attempt towards valorization
title_fullStr Laccase mediated delignification of pineapple leaf waste: an ecofriendly sustainable attempt towards valorization
title_full_unstemmed Laccase mediated delignification of pineapple leaf waste: an ecofriendly sustainable attempt towards valorization
title_short Laccase mediated delignification of pineapple leaf waste: an ecofriendly sustainable attempt towards valorization
title_sort laccase mediated delignification of pineapple leaf waste: an ecofriendly sustainable attempt towards valorization
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6661841/
https://www.ncbi.nlm.nih.gov/pubmed/31384806
http://dx.doi.org/10.1186/s13065-019-0576-9
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