Abstract

CUZCANO-RUIZ, Ángel; REYES-LOPEZ, Andersson; NIETO-JUAREZ, Jessica  and  COLLANTES-DIAZ, Ingrit. Study of the phytoconstituents of pleurotus ostreatus grown in coffee pulp waste. Tecnia [online]. 2020, vol.30, n.2, pp.64-68. ISSN 0375-7765.  http://dx.doi.org/10.21754/tecnia.v30i2.806.

The mushroom Pleurotus ostreatus also called oyster mushroom is widely cultivated for its nutritional value, as well as, for its different health benefits and for its values in remediation. Laboratory N° 11 of the Universidad Nacional de Ingeniería of Peru is cultivating P. ostreatus making use of residues of coffee pulp as a substrate. The present work describes the identification of the major phytoconstituents in the apolar fractions of the organic crude extrac of oyster mushroom. After the transesterification of a fraction rich in fatty acids, the palmitic acid methyl ester was identified as the majority and of a second fraction were identified of the steroids 5α,8α-epidioxi-24(R)-metilcolesta-6en-3β-ol and 5α,8α-epidioxi-22E-ergosta-6,22-dien-3β-ol. The compounds were identified by gas chromatography analysis coupled to a mass spectrometer and by nuclear magnetic resonance of hydrogen and carbon 13.

Keywords : Pleurotus ostreatus; sterol 5α,8α-endoperoxides; fatty acids.

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