Abstract：
:This paper explores the use of the hydrolysate from the dilute sulfuric acid pretreatment of wheat straw for microbial oil production. The resulting hydrolysate was composed of pentoses (24.3g/L) and hexoses (4.9 g/L), along with some other degradation products, such as acetic acid, furfural, and hydroxymethylfurfural (HMF). Five oleaginous yeast strains, Cryptococcus curvatus, Rhodotorula glutinis, Rhodosporidium toruloides, Lipomyces starkeyi, and Yarrowia lipolytica, were evaluated by using this hydrolysate as substrates. The results showed that all of these strains could use the detoxified hydrolysate to produce lipids while except R. toruloides non-detoxified hydrolysate could also be used for the growth of all of the selective yeast strains. C. curvatus showed the highest lipid concentrations in medium on both the detoxified (4.2g/L) and non-detoxified (5.8 g/L) hydrolysates. And the inhibitory effect studies on C. curvatus indicated HMF had insignificant impacts at a concentration of up to 3g/L while furfural inhibited cell growth and lipid content by 72.0% and 62.0% at 1g/L, respectively. Our work demonstrates that lipid production is a promising alternative to utilize hemicellulosic sugars obtained during pretreatment of lignocellulosic materials.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Yu X,Zheng Y,Dorgan KM,Chen Sdoi
10.1016/j.biortech.2011.02.081subject
Has Abstractpub_date
2011-05-01 00:00:00pages
6134-40issue
10eissn
0960-8524issn
1873-2976pii
S0960-8524(11)00287-2journal_volume
102pub_type
杂志文章abstract：:In order to establish the correlation between hemicelluloses removal and bioconversion efficiency of cellulose, fractionation process with increasing NaOH concentration selectively released the hemicellulosic polymers with increasing molecular weight and decreasing degree of substitution. Not only the initial hydrolys...
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更新日期：2014-06-01 00:00:00
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更新日期：2013-02-01 00:00:00
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更新日期：2008-06-01 00:00:00
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pub_type： 杂志文章
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更新日期：2014-09-01 00:00:00
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更新日期：2006-01-01 00:00:00
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更新日期：2008-07-01 00:00:00
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journal_title：Bioresource technology
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更新日期：2013-07-01 00:00:00
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更新日期：2020-03-03 00:00:00
