• Title/Summary/Keyword: Talaromyces luteus

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Isolation of a Thermophilic Mutant, Talaromyces luteus 2004 in relation to the Regulation of Carboxymethylcellulase Production and Enzymatic characteristics (고온성 변이균주 Talaromyces luteus 2004의 분리와 Carboxymethylcellulase의 생성 조절 및 효소의 특성)

  • Hong, Mi-Kyung;Han, Hyo-Young;Jung, Young-Hee;Min, Kyung-Hee
    • The Korean Journal of Mycology
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    • v.24 no.3 s.78
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    • pp.206-213
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    • 1996

  • Talaromyces luteus 2004, a thermophilic mutant of T. luteus 6112 was obtained by mutagenesis with N-methyl-N'-nitro-N-nitrosoguanidine. T. luteus 2004 produced thermophilic carboxymethylcellulase (CMCase), and other polysaccharide enzymes: avicellase, xylanase, and ${\beta}-glucosidase$. Induction of CMCase production was shown at the highest level in 3% carboxymethylcellulose (CMC) minimal broth, indicating that CMC could work as an inducer. However, glucose and D-cellobiose showed catabolite repression for CMCase production which was under the control of CMC utilization. Optimal conditions for CMCase activity were at $70^{\circ}C$ and pH 4.0, suggesting that CMCase of T. luteus 2004 was a thermophilic enzyme.

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