Abstract
Six samples of three wild edible mushrooms collected during the rainy season and identified as Termitomyces robustus, Tricholoma lobayensis, and Volvariella esculenta were studied. The pileus (cap) and stipe (stalk) of the button stage and incomplete open cap of each were separately assayed for amino acid and trace mineral (chromium, cobalt, nickel, and zinc) content. The mushroom species had similar distribution of amino acids. They all contained all the essential amino acids (tryptophan was not determined) in varying amounts. Variations in amino acid content were found to be related to the stage of development, type, and part of mushroom. Trace mineral content varied by species and parts rather than by the stage of development. Glycine, glutamate, alanine, and aspartate were the most abundant amino acids in all the mushrooms. Cystine-cystein and methionine were the most limiting of the sulfur-containing amino acids. Zinc was found to be more than five times more abundant than any of the three other minerals. The results are presented for fresh weight only.
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