Lignocellulosic Biomass as a Substrate for Oleaginous Microorganisms: A Review

Microorganisms capable of accumulating lipids in high percentages, known as oleaginous microorganisms, have been widely studied as an alternative for producing oleochemicals and biofuels. Microbial lipid, so-called Single Cell Oil (SCO), production depends on several growth parameters, including the...

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Main Authors: Gabriela Valdés, Regis Teixeira Mendonça, George Aggelis
Format: Article
Language:English
Published: MDPI AG 2020-10-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/10/21/7698
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author Gabriela Valdés
Regis Teixeira Mendonça
George Aggelis
author_facet Gabriela Valdés
Regis Teixeira Mendonça
George Aggelis
author_sort Gabriela Valdés
collection DOAJ
description Microorganisms capable of accumulating lipids in high percentages, known as oleaginous microorganisms, have been widely studied as an alternative for producing oleochemicals and biofuels. Microbial lipid, so-called Single Cell Oil (SCO), production depends on several growth parameters, including the nature of the carbon substrate, which must be efficiently taken up and converted into storage lipid. On the other hand, substrates considered for large scale applications must be abundant and of low acquisition cost. Among others, lignocellulosic biomass is a promising renewable substrate containing high percentages of assimilable sugars (hexoses and pentoses). However, it is also highly recalcitrant, and therefore it requires specific pretreatments in order to release its assimilable components. The main drawback of lignocellulose pretreatment is the generation of several by-products that can inhibit the microbial metabolism. In this review, we discuss the main aspects related to the cultivation of oleaginous microorganisms using lignocellulosic biomass as substrate, hoping to contribute to the development of a sustainable process for SCO production in the near future.
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spelling doaj.art-8a08b3649f094024846a3c5608ca15882023-11-20T19:15:12ZengMDPI AGApplied Sciences2076-34172020-10-011021769810.3390/app10217698Lignocellulosic Biomass as a Substrate for Oleaginous Microorganisms: A ReviewGabriela Valdés0Regis Teixeira Mendonça1George Aggelis2Division of Genetics, Cell Biology and Development, Department of Biology, University of Patras, 26504 Patras, GreeceCentro de Biotecnología, Universidad de Concepción, Concepción 4030000, ChileDivision of Genetics, Cell Biology and Development, Department of Biology, University of Patras, 26504 Patras, GreeceMicroorganisms capable of accumulating lipids in high percentages, known as oleaginous microorganisms, have been widely studied as an alternative for producing oleochemicals and biofuels. Microbial lipid, so-called Single Cell Oil (SCO), production depends on several growth parameters, including the nature of the carbon substrate, which must be efficiently taken up and converted into storage lipid. On the other hand, substrates considered for large scale applications must be abundant and of low acquisition cost. Among others, lignocellulosic biomass is a promising renewable substrate containing high percentages of assimilable sugars (hexoses and pentoses). However, it is also highly recalcitrant, and therefore it requires specific pretreatments in order to release its assimilable components. The main drawback of lignocellulose pretreatment is the generation of several by-products that can inhibit the microbial metabolism. In this review, we discuss the main aspects related to the cultivation of oleaginous microorganisms using lignocellulosic biomass as substrate, hoping to contribute to the development of a sustainable process for SCO production in the near future.https://www.mdpi.com/2076-3417/10/21/7698oleaginous microorganismsmicrobial lipidslignocellulose pretreatmentenzymatic hydrolysisinhibitors
spellingShingle Gabriela Valdés
Regis Teixeira Mendonça
George Aggelis
Lignocellulosic Biomass as a Substrate for Oleaginous Microorganisms: A Review
Applied Sciences
oleaginous microorganisms
microbial lipids
lignocellulose pretreatment
enzymatic hydrolysis
inhibitors
title Lignocellulosic Biomass as a Substrate for Oleaginous Microorganisms: A Review
title_full Lignocellulosic Biomass as a Substrate for Oleaginous Microorganisms: A Review
title_fullStr Lignocellulosic Biomass as a Substrate for Oleaginous Microorganisms: A Review
title_full_unstemmed Lignocellulosic Biomass as a Substrate for Oleaginous Microorganisms: A Review
title_short Lignocellulosic Biomass as a Substrate for Oleaginous Microorganisms: A Review
title_sort lignocellulosic biomass as a substrate for oleaginous microorganisms a review
topic oleaginous microorganisms
microbial lipids
lignocellulose pretreatment
enzymatic hydrolysis
inhibitors
url https://www.mdpi.com/2076-3417/10/21/7698
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