Estudo fitoquímico e atividade biológica de Aegiphila integrifolia (Jacq.)

Abstract

This dissertation presents the phytochemical study and biological evaluation of the ethanol extract of Aegiphila integrifolia (Jacq.) belonging to the family Lamiaceae. The phytochemical study of clorofómico eluate of ethanol leaf extract led to the isolation and identification of a mixture of fatty acids as their methyl esters, a mixture of, β - sitosterol, stigmasterol and lupeol glycosylated a flavonoid known as Pectolinarigenin. Mixtures of methyl esters were analyzed and determined by gas chromatography. Structural determinations were made by means of spectroscopic methods such as mono-and two-dimensional IR, 1H NMR (500 MHz), 13C NMR (125 MHz), HSQC, HMBC, ESI-MS and comparison with literature data. The biological study of the ethanol extract showed a good result for antioxidant activity by DPPH method compared to standard quercetin. The investigation of the toxicity of the test conducted according front Artemia salina indicated low toxicity (LD 50 % up to 500 mg mL-1) and compared to values found in literature confirming the low toxicity of the genus Artemia salina front Aegiphila. The MIC tests for filamentous fungi, Gram - Positive and Gram-Negative Bacteria and yeast showed low inhibition compared with Ampicillin antibiotics except the yeast Candida albicans. This inhibition was satisfactory, approximately 96% to RR05 sample (the flavonoid) and 92% for sample R06 (ethanol extract) comparing antibiotic Nystatin and Miconazole (91%).