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우명식 한국균학회 1983 韓國菌學會誌 Vol.11 No.4
To investigate a possibility of producing the antitumor component by shake culture method, the mycelia of Flammulina velutipes were cultured in flasks on a shaker at 26∼28℃ at 180 rpm for seven days. The extract of the mycelia was concentrated under vacuum. The precipitate obtained by adding a three-fold volume of ethanol was centrifugated and freeze-dried after dialysis. The fraction was tested against sarcoma 180 in the, mice. The inhibition ratio of the fraction against the tumor was 68.0% at the dose of 20 ㎎/㎏/day for the period of ten days and the tumors in three of the mice were completely regressed. The results showed, therefore, that the antitumor component was produced by the shake culture method.
우명식 한국균학회 1983 韓國菌學會誌 Vol.11 No.2
To find antitumor components with low toxicity in the Basidiomycetes of Korea, the carpophores of Flammulina velutipes (Fr.) Singer were extracted with hot water for eight hours. The extract was purified by dialyzing through Visking tube and a protein-bound polysaccharide fraction wes obtained as pale brownish amorphous powder after freeze-drying. The fraction was examined for antitumer activity against sarcoma 180 implanted subcutanecusly in the left groin in ICR mice. The inhibition ratio of this fraction against the tumor was 62.3% at the dose of 10㎎/㎏/day for the period of ten days. The tumors in three of the ten treated mice were completely regressed. The chemical analysis of the antitumor component by anthrone and Lowry-Folin methods showed that it consisted of a polysaccharide (42.4%) and a protein (24.5%). The hydrolysis of the polysaccharide moiety with 3% HCl-MeOH and trimethysilylation of the hydrolyzate yielded five monosaccharides which were identified by G.L.C. Several amino acids were identified by an amino acid autoanalyzer in the acid hydrolyzate of the protein moiety.