Mycobiology.
2011 Jun;39(2):129-132.
Optimal Media Conditions for the Detection of Extracellular Cellulase Activity in Ganoderma neo-japonicum
- Affiliations
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- 1Department of Agricultural Environment, Gyeongbuk Agricultural Technology Administration, Daegu 702-320, Korea. jws67@korea.kr
- 2Mushroom Research Division Department of Herbal Crop Research National Institute of Horicultural & Herbal Science, Rural Development Administration, Suwon 404-707, Korea.
- 3College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea.
Abstract
- To determine the optimal media conditions for the detection of the extracellular cellulase activity in Ganoderma neo-japonicum, we varied three media conditions: dye reagent, pH, and temperature. We evaluated the use of four dyes, Congo red, phenol red, remazol brilliant blue, and trypan blue. To observe the effect of pH on the chromogenic reaction, we tested media ranging from 4.5 to 8.0. To research the effect of temperature on the clear zone and the fungus growing zone, we tested temperatures ranging from 15 to 35degrees C. On the whole, the best protocol called for Ganoderma neo-japonicum transfer onto media containing Congo red with a pH of 7.0, followed by incubation at 25degrees C for 5 days. Our results will be useful to researchers who study extracellular enzyme activity in Ganoderma neo-japonicum.
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