期刊
BIORESOURCE TECHNOLOGY
卷 166, 期 -, 页码 602-605出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.05.068
关键词
Trametes versicolor; Laccase; Corn steep liquor; Phenolic compounds; Inducer
资金
- National Basic Research Program (973 Program) of China [2013CB733600]
- National Natural Science Foundation of China [21206177]
- National Key Technology Research and Development Program of China [2012BAK25B01, 2013BAB01B03-2]
- Key Development Program of Chinese Academy of Sciences [KSZD-EW-Z-015]
- National Key Laboratory of Biochemical Engineering Grant for Young Scientists
A highly efficient strategy for laccase production by Trametes versicolor was developed using corn steep liquor (CSL) as both a nitrogen source and a laccase inducer. At the optimal CSL concentration of 20 g L-1, an extracellular laccase activity of 633.3 U L-1 was produced after a culture period of only 5 days. This represented a 1.96-fold increase relative to control medium lacking CSL. The addition of crude phenolic extracts from CSL improved laccase production to 91.8% greater than the control. Sinapinic acid, present in CSL, caused a reduction in laccase production, vanillic acid and ferulic acid (also present in CSL) synergistically induced laccase production by more than 100% greater than the control medium. Vanillic acid and ferulic acid provided the main contribution to the enhancement of laccase production. This study provides a basis for understanding the induction mechanism of CSL for laccase production. (C) 2014 Elsevier Ltd. All rights reserved.
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