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Breeding of Lentinula edodes generates a number of hybrid strains that are subject to evaluation for good traits for the mushroom production. As an effort to understand biochemical properties of the hybrid strains, this study tried to develop a fast and easy method for comparison of the ability of producing extracellular laccase among hybrid strains of Lentinula edodes. For this aim, we estimated the effect of media types and chromagenic chemicals on the detection of extracellular laccase in seven hybrid strains of L. edodes. When Remazol Brilliant Blue R (RBBR) dye was used for chromagenic reaction, the detection of the enzyme activity was feasible both in the solid and liquid media containing not potato dextrose but malt extract as a nutrient component. When guaiacol was used for chromagenic reaction, the detection of the enzyme activity was feasible both in the solid and liquid media containing either potato dextrose or malt extract as a nutrient component. Malt extract-based liquid culture with RBBR or guaiacol in 2 ml microfuge tube allowed us to economically and quantitatively detect and compare the enzyme activity within 3 days among the tested hybrid strains of L. edodes.

Analysis of the Effect of Media Types and Chromagenic Chemicals on the Detection of Extracellular Laccase Activity among Lentinula edodes Strains