European journal of applied microbiology and biotechnology

, Volume 15, Issue 4, pp 237-240

First online:

The nucleic acid content of some edible mushrooms

  • G. S. F. LiAffiliated withDepartment of Biology, The Chinese University of Hong Kong
  • , S. T. ChangAffiliated withDepartment of Biology, The Chinese University of Hong Kong

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An improved method for the determination of nucleic acid content in edible mushrooms is described. Details of tissue homogenization and extraction are also included. In regard to the limit suggested by the Protein Advisory Group of the United Nations System, the amount of nucleic acids found in Agaricus bisporus, Pleurotus cystidiosus, Pleurotus sajor-caju and Volvariella volvacea indicates that it is safe to consume mushrooms as daily vegetable. No significant changes have been found in the nucleic acid content of V. volvacea at different degrees of maturity. V. volvacea loses around 20% of its nucleic acids upon boiling for 10 min. Possible reasons for the discrepancy between the present finding and that given in an earlier report have been discussed.