Yeast as a production platform in biorefineries: conversion of agricultural residues into value-added products
Laen...
Kuupäev
2018
Kättesaadav alates
Autorid
Cristobal-Sarramian, A.
Atzmüller, D.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
In contrast to a petroleum
-
based economy, which relies on the unlimited presence of
fossi
l fuels, a biobased economy utilizes a broad spectrum of natural crops and biomass as raw
substrates for the production of valuable materials. Biorefineries represent a promising approach
for the co
-
production of bioenergy (biofuels, biogas) and value
-
adde
d products (biochemicals,
biomaterials, food). Within Europe, wheat straw represents the major crop residue and has been
extensively considered as a promising feedstock in the biorefining process. Firstly, wheat straw
is hydrolysed to obtain a sugar soluti
on that is further converted into the desired product in a
biocatalytic manner. Microbial fermentation is the core component of biorefineries and yeast, as
for instance
Candida guilliermondii
, is an effective production platform for both, biofuels and
bioc
hemicals. One limiting aspect in using yeast in the biorefinery approach is the presence of
inhibitors in lignocellulosic hydrolysates, such as acetic acid or furfural, influencing cellular
growth and diverse metabolic processes. In order to overcome this
problem, several genetic
engineering approaches are used to increase yeast resistance towards these inhibitors and to
enhance the overall production. In this paper, we summarized: 1) the pretreatment technologies
for wheat straw bioconversion; 2) the
Candi
da guilliermondii
genetic engineering technologies
and their biotechnological potential. In conclusion, biorefineries are a crucial factor in the
transition towards a biobased and circular economy, and the implementation of yeast into this
system offers a
great opportunity to develop innovative strategies for a sustainable production in
an environmentally friendly and economically feasible manner.
Kirjeldus
Article
Märksõnad
biorefinery, wheat straw, genetic engineering, yeast, Candida guilliermondii, articles