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GC-MS analysis of steroids and triterpenoids occurring in leaves and tubers of Tamus edulis Lowe
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Orientador(es)
Resumo(s)
Tamus edulis Lowe is an endemic perennial plant belonging to Dioscoreaceae family. The plant has long climbing
stems, ovate leaves, flowers in spikes, fleshy red berries and long tuberous roots. Young shoots and tuberous
roots of T. edulis were used traditionally for nourishment and as a herbal medicine. Leaves and roots analyzed in
the present study were collected in the northwest of Madeira island. The GC–MS analysis allowed to detect
several steroids in free forms in diethyl ether extracts; and diosgenin with its isomer, yamogenin, in hydrolyzates
from methanolic extracts.The obtained results reveal that Tamus edulis has some features common with other
Dioscorea species, e.g., the presence of steroidal saponins with diosgenin and yamogenin as aglycones, or the
phytosterol composition with predominating sitosterol. However, some other traits, like the relatively high
content of free steroids (more than 1 mg/g d.w.) and their profile rich in cholesterol derivatives, can distinguish
Tamus edulis from other Dioscorea species studied previously for their steroid and triterpenoid profile.
Descrição
Palavras-chave
Tamus edulis Dioscoreaceae GC–MS Steroids Steroid sapogenins Triterpenoids . Faculdade de Ciências da Vida
Contexto Educativo
Citação
Rogowska, A., Styczyński, M., Pączkowski, C., Szakiel, A., & Carvalho, M. Â. A. P. (2019). GC-MS analysis of steroids and triterpenoids occurring in leaves and tubers of Tamus edulis Lowe. Phytochemistry Letters, 30, 231-234. https://doi.org/10.1016/j.phytol.2019.01.012
Editora
Phytochemical Society of Europe