Abstract
Effect of primary processings on 5'-nucleotide content in seven species of mushrooms including Hygrophorus russula (Sakurashimeji), Lyophyllum fumosum (Shakashimeji), Armillariella mellea (Naratake), Lentinus edodes (Shiitake), Lactarius hatsudake (Hatsutake), Ramaria botrytis (Hokitake) Grifola frondosa (Maitake), were examined. Three different conditions were used to extract 5'-nucleotide from mshrooms. There was significant difference in 5'-nucleotide content among species of mushrooms. Lac. Hatsudake, Lyo. fumosum, and G. frondosa contained more 5'-nucleotides than H. russula and R. botrytis. 5'-Nucleotide contents of mushroom which desalted after salting stock were extremely low. No significant difference in 5'-Nucleotide of seven species of mushrooms was found among drying methods. Extraction periods with boiling water had no effect 5'-nucleotide contents. On the contrary the soaking for three hours before extraction with boiling water decreased the contents. Seven species of mushrooms showed similar change in the content of guanosine-5'-monophosphate.
