Orientador(es)
Resumo(s)
A wild variety of bitter melon Momordica charantia L. (Cucurbitaceae) has been used in bush medicine of Trinidad and Tobago for treatment of diabetes, inflammations and cancer. Despite many studies regarding the cultivated bitter melon, the wild variety has been poorly investigated. This study evaluates the biological activities of the ethanol/water extract of aerial parts and correlates these activities with the presence of phenolic compounds. The extract exhibited antioxidant activity in the four assays (DPPH, reducing power, ß-carotene bleaching and TBARS). The key role of oxidative stress in inflammation and tumorigenesis was supported by the results of anti-inflammatory (inhibition of nitric oxide production) and cytotoxicity (human tumor cell lines, namely HeLa, HepG2, MCF-7, and NCI-H460) assays. In contrast, no toxicity was observed in non-tumor cells. In the antibacterial screening, clinical resistant isolates were significantly affected (MIC 50 = 10–0.625 µg/mL), being Listeria monocytogenes the most susceptible. Three phenolic acids and eleven flavonol glycosides derivatives were identified, quercetin-3-O-pentosylhexoside being the most abundant.
Descrição
Palavras-chave
Anti-inflammatory Antimicrobial activity Antioxidant Cytotoxicity Momordica charantia L. Phenolic compounds
Contexto Educativo
Citação
Svobodova, Blanka; Barros, Lillian; Calhelha, Ricardo C.; Heleno, Sandrina; Alves, Maria Jose; Walcott, Simone; Bittova, Miroslava; Kuban, Vlastimil; Ferreira, Isabel C.F.R. (2017). Bioactive properties and phenolic profile of Momordica charantia L. medicinal plant growing wild in Trinidad and Tobago. Industrial Crops and Products. ISSN 0926-6690. 95, p. 365-373