Abstract
Sugar generation is important for many industries, such as livestock feed and
bioethanol production. Rice straw is an agricultural waste that serves as a good source
of sugar. In this study, a xylanase-producing fungus was isolated form compost pile
and identified as Aspergillus fumigatus based on the internal transcribing spacer
sequence. Xylanase produced by this fungus was characterised. The optimal conditions
for fungal xylanase activity were 55C and pH 5.0. Enzyme activity declined to 45.26%
following incubation at 50C for 2 days. Rice straw was more suitable for xylanase
production than other substrates. The filtrate of A. fumigatus grown on rice straw as a
substrate was added to rice straw, and reducing sugar production was determined. The
maximum reducing sugar production was achieved with incubation at 30C for 18 h.
Xylanase produced by A. fumigatus can be used for rice straw pre-treatment to improve
the nutrient content of livestock feed and increase bioethanol production.
Suwattana Singhajutha, Eakaphun Bangyeekhun, Urarux Romruen. (2020) Xylanase production by Aspergillus fumigatus UR01 by solid state fermentation of rice straw, Asian Journal of Agriculture and Biology, Volume 8, Issue-4.
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