, Volume 53, Issue 6, pp 427-432
Date: 17 Mar 2012

Survival of anaerobic fungus Caecomyces sp. in various preservation methods: a comparative study

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The present investigation was designed to observe the survival of the anaerobic fungus Caecomyces sp. in various routine preservation methods. Among all the treatments, cryopreservation of fungi at −70 °C with glycerol was found to be most effective for long-term maintenance (more than 90 days) of rumen fungi, followed by dimethyl sulfoxide (DMSO) and ethylene glycol (up to 60 days). In contrast, at −196 °C, DMSO showed maximum survival (more than 90 days), followed by glycerol (up to 90 days) and ethylene glycol (up to 30 days). At 39 °C, maximum survival (up to 30 days) was observed with soft agar and wheat straw; at refrigeration temperature, preservation with Orpin’s media containing straw showed maximum survival (up to 30 days).