A solid state fungal fermentation-based strategy for the hydrolysis of wheat straw

Nattha Pensupa, Meng Jin, Matt Kokolski, David B. Archer, Chenyu Du

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

This paper reports a solid-state fungal fermentation-based pre-treatment strategy to convert wheat straw into a fermentable hydrolysate. Aspergillus niger was firstly cultured on wheat straw for production of cellulolytic enzymes and then the wheat straw was hydrolyzed by the enzyme solution into a fermentable hydrolysate. The optimum moisture content and three wheat straw modification methods were explored to improve cellulase production. At a moisture content of 89.5%, 10.2. ±. 0.13. U/g cellulase activity was obtained using dilute acid modified wheat straw. The addition of yeast extract (0.5% w/v) and minerals significantly improved the cellulase production, to 24.0. ±. 1.76. U/g. The hydrolysis of the fermented wheat straw using the fungal culture filtrate or commercial cellulase Ctec2 was performed, resulting in 4.34 and 3.13. g/L glucose respectively. It indicated that the fungal filtrate harvested from the fungal fermentation of wheat straw contained a more suitable enzyme mixture than the commercial cellulase.

Original languageEnglish
Pages (from-to)261-267
Number of pages7
JournalBioresource Technology
Volume149
Early online date23 Sep 2013
DOIs
Publication statusPublished - Dec 2013
Externally publishedYes

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