Abstract:
:The aldopentose D-xylose is one of the most abundant sugars in plant biomass and its efficient microbial utilization is of fundamental importance in the overall bioconversion of lignocellulosic materials into liquid fuels and chemicals. The discovery of pentose-fermenting yeasts in the early 1980's led to world wide interest because of the perceived potential for improved D-xylose fermentation to enhance the prospect of biomass conversions. However, the utilization of D-xylose by pentose-fermenting yeasts can be adversely affected by the hexoses, mainly D-glucose and D-mannose, which are usually present in high amounts in lignocellulosic hydrolysates. Research in the past several years has uncovered some of the regulatory effects of D-glucose on D-xylose utilization. However, much remains unknown about the mechanisms responsible for these effects. This review summarizes the current state of knowledge on the induction, repression and inactivation of D-xylose utilization in pentose-fermenting yeasts.
journal_name
Biotechnol Advjournal_title
Biotechnology advancesauthors
Webb SR,Lee Hdoi
10.1016/0734-9750(90)91991-osubject
Has Abstractpub_date
1990-01-01 00:00:00pages
685-97issue
4eissn
0734-9750issn
1873-1899pii
073497509091991Ojournal_volume
8pub_type
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