The mushroom namely, Lentinus polychrous Lév. (on dead wood) collected from the Western Ghat
Forests of Southern India was subjected for amino acid, fatty acid and mineral analyses. A total of 17 amino acids
were detected in the mushroom sample. All the essential amino acids were present, of which glutamic acid was
predominant. The non-essential amino acids content of the mushroom includes alanine, aspartic acid and serine. In
the case of fatty acids, ten components were identified, among them linoleic acid, palmitic acid and oleic acids were
found to be the major ones. Atomic absorption spectrophotometric analysis indicated that the mushroom is a rich
source of minerals namely, sodium (37.7±0.35 mg), potassium (104 ±0.76 mg), magnesium (177±0.0 mg),
phosphorous (31.0±0.36 mg) and calcium (90.6±0.32 mg) per 100g.
Key words: Lentinus polychrous Lév. Mushroom, amino acid, fatty acid, minerals.