Universidade Estadual do Oeste do Paraná - UNIOESTE, Programa de Conservação e Manejo de Recursos Naturais, Laboratório de Microbiologia e Biotecnologia - LAMIBI, Cascavel, PR, Brasil.
Braz J Biol. 2021 Jun 28;83:e245753. doi: 10.1590/1519-6984.245753. eCollection 2021.
The species Eugenia involucrata DC. is a plant native to Brazil and is traditionally used for intestinal problems, however, little research has documented about its biological potential and phytochemical profile. Thus, the objective of this study was to carry out preliminary phytochemical prospecting, antimicrobial and antioxidant potential of E. involucrata extracts. Using the E. involucrata leaves, aqueous and organic extracts were obtained using the following solvents (ethanol, methanol, hexane, acetone, dichloromethane and ethyl acetate). The phytochemical prospecting detected the presence of saponins, steroids, flavonoids and tannins in the extracts. Ethanolic and methanolic extracts presented antimicrobial activity for most of the bacterial strains tested, as well as for yeast Candida albicans, with concentrations between 3.12 and 50 mg/mL. The ethanolic and metanolic extract presented high free radical sequestration potential (>90%). The methanol extract showed an IC50 value statistically equal to that found for the commercial antioxidant BHT (p <0.05). The crude extracts obtained with ethanol and methanol were the most promising. These results suggest that methanolic, ethanolic and aqueous extracts are a promising source of natural bioactive.
被囊叶茶(Eugenia involucrata DC.)是一种原产于巴西的植物,传统上用于治疗肠道问题,但关于其生物潜力和植物化学成分的研究很少。因此,本研究的目的是对被囊叶茶提取物进行初步的植物化学成分研究、抗菌和抗氧化潜力研究。使用被囊叶茶的叶子,使用以下溶剂(乙醇、甲醇、己烷、丙酮、二氯甲烷和乙酸乙酯)获得水提物和有机溶剂提取物。植物化学成分研究发现,提取物中存在皂角苷、类固醇、类黄酮和单宁。乙醇和甲醇提取物对大多数测试的细菌菌株以及白色念珠菌(Candida albicans)都具有抗菌活性,浓度在 3.12 至 50mg/mL 之间。乙醇和甲醇提取物具有较高的自由基清除能力(>90%)。甲醇提取物的 IC50 值与商业抗氧化剂 BHT 的 IC50 值统计学上相等(p<0.05)。用乙醇和甲醇获得的粗提取物最有前途。这些结果表明,甲醇、乙醇和水提取物是天然生物活性物质的有前途的来源。