Evaluación del perfil aromático de babaco (Vasconcellea x heilbornii) por cromatografía de gases acoplado a espectrometría de masas

Abstract

The aromatic profile of three varieties of Vasconcelleas (babaco, toronche and chamburo) was evaluated through microextraction in solid phase by static space and analysis by gas chromatography attached to mass spectrometry. Fifty-six compounds were identified: forty esters, seven terpenes, four alcohols, three acids and two ketones. The compounds ethyl acetate, butyl acetate, hexyl acetate, methyl hexanoate, butyl butanoate, ethyl benzoate, butyl hexanoate, ethyl octanoate, ethyl butanoate, ethyl hexanoate, linalool, butanol and octanol were identified in all three samples. In addition, the content of total phenols and antioxidant capacity was measured by the methods: DPPH, ABTS and FRAP. The extraction was carried out by sequential dynamic maceration with methanol/water (50:50, v/v) and acetone/water (70:30, v/v). The toronche showed the highest concentration for DPPH (7.2 μmol EQ Trolox/g FW), FRAP (47.6 μmol EQ Trolox/g FW) and total phenols (34.2 mg EAG/100 g FW), whereas for ABTS it was chamburo (6.1 μmol EQ Trolox/g FW). These results indicate that the toronche and chamburo can be considered as moderate sources of antioxidants.