Reddy Boreddy Srinivas, Reddy Boreddy Purushotham, Raghavulu Sapireddy Veer, Ramakrishna Sistla, Venkateswarlu Y, Diwan Prakash V
Pharmacology Division, Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500007, India.
Phytother Res. 2008 Jul;22(7):943-7. doi: 10.1002/ptr.2433.
The present study was designed to evaluate the antioxidant and antimicrobial properties of hexane (LH), methanol (LM) and aqueous (LA) extracts of Soymida febrifuga (Maliaceae) leaves, which is a traditional folk medicine in India. No pharmacological evaluation of this plant (except antiplasmodial activity) has been reported to date. Antioxidant activity of different extracts was evaluated by DPPH free radical scavenging activity, taking total phenolic content (TPC) as an index. Antimicrobial activity was tested against six bacterial and five fungal strains using the agar hole diffusion method and the minimum inhibitory concentrations (MIC) and minimum microbicidal concentration (MMC) were determined for all the test organisms against the extracts. The results showed that the methanol and aqueous extracts of leaf had a higher antioxidant activity and total phenolic content than the hexane extract. The antioxidant activity and TPC of the extracts were highly correlated. Extracts also showed several degrees of antimicrobial activity against different microbes. The methanol extract was more potent against Aspergillus fumigatus and Candida tropicana. The lowest MIC values obtained for LM, LA and LH were 78, 156, 625 microg/mL against A. fumigatus, C. tropicana and C. albicans, respectively. Hence, this study confirms that Soymida febrifuga leaves possess potent antioxidant and antimicrobial activity.
本研究旨在评估印度传统民间药物 febrifuga(楝科)叶的己烷提取物(LH)、甲醇提取物(LM)和水提取物(LA)的抗氧化和抗菌特性。迄今为止,尚未有关于该植物的药理学评估报道(抗疟活性除外)。以总酚含量(TPC)为指标,通过 DPPH 自由基清除活性评估不同提取物的抗氧化活性。使用琼脂孔扩散法对六种细菌和五种真菌菌株进行抗菌活性测试,并测定所有受试微生物对提取物的最低抑菌浓度(MIC)和最低杀菌浓度(MMC)。结果表明,叶的甲醇提取物和水提取物比己烷提取物具有更高的抗氧化活性和总酚含量。提取物的抗氧化活性与 TPC 高度相关。提取物对不同微生物也表现出不同程度的抗菌活性。甲醇提取物对烟曲霉和热带假丝酵母更有效。LM、LA 和 LH 对烟曲霉、热带假丝酵母和白色念珠菌的最低 MIC 值分别为 78、156、625 μg/mL。因此,本研究证实 febrifuga 叶具有强大的抗氧化和抗菌活性。