Chemical composition, antioxidant and antimicrobial activities of stem barks of Englerina gabonensis Engler and Sterculia tragacantha Lindl from Gabon

International Journal of Phytomedicine Pub Date : 2017-09-02 DOI:10.5138/09750185.2124

C. Obiang, R. Ngoua-Meye-Misso, Guy-Roger Ndong-Atome, J. Ondo, L. Obame-Engonga, E. Nsi-Emvo

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引用次数: 10

Abstract

Aim of this work was to evaluate the phytochemical constituents, antioxidant and antimicrobial potential of water-acetone, water-ethanol and water extracts of Englerina gabonensis and Sterculia tragacantha .Presence of phenols was evaluated to estimate the effects of plants on microbial diseases. Water-acetone, water-ethanol and water extracts were examined for antioxidant activities. All plant extracts were tested against six reference strains, eleven clinical isolates and two fungal strains. Phenolic content were highest in the water-acetone and water-ethanol extracts from Englerinagabonensis in comparison with Sterculia tragacantha .The AAI (Antioxidant Activity Index)of water-acetone and water-ethanol extracts of Englerina gabunensis are superiors with 2. Plant extracts of Sterculia tragacantha show weak antioxidant activity (AAI < 0.5).The aqueous extract of Englerina gabonensis has a bactericidal effect on Salmonella Spp . Water-ethanol extract is bactericidal on Bacillus cereus LMG 13569 BHI, Salmonella Spp and Neisseria meningitides. Water-acetone extract presents a bactericidal activity on Enterococcus faecalis 103907 CIP, Escherichi coli , Staphylococcus aureus , Acinetobacter baumannii and Neisseria meningitides. Our results suggest that Englerina gabonensis extracts contain greater antioxidant and antimicrobial properties than Sterculia tragacantha extracts.

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加蓬产加蓬栎(Englerina gabonensis Engler)和加蓬栎(Sterculia tragacantha Lindl)茎皮的化学成分及抗氧化和抗菌活性

本研究旨在评价加蓬英、沙棘水丙酮、水乙醇和水提取物的植物化学成分、抗氧化和抑菌活性，并评价其酚类成分对植物微生物病害的防治作用。水-丙酮、水-乙醇和水提取物的抗氧化活性进行了检测。所有植物提取物分别与6株参考菌株、11株临床分离株和2株真菌进行对照试验。水丙酮和水乙醇提取物的酚含量最高，抗氧化活性指数(AAI)为2。石棘植物提取物抗氧化活性较弱(AAI < 0.5)。加蓬凤梨水提物对沙门氏菌有一定的杀菌作用。水乙醇提取物对蜡样芽孢杆菌lmg13569 BHI、沙门氏菌和脑膜炎奈瑟菌均有杀菌作用。水丙酮提取物对粪肠球菌103907cip、大肠杆菌、金黄色葡萄球菌、鲍曼不动杆菌和脑膜炎奈瑟菌均有一定的杀菌活性。我们的研究结果表明，加蓬草提取物具有较强的抗氧化和抗菌性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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International Journal of Phytomedicine

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