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首页> 外文期刊>RSC Advances >DNA protection, antioxidant, antibacterial and enzyme inhibition activities of heartwood and sapwood extracts from juniper and olive woods
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DNA protection, antioxidant, antibacterial and enzyme inhibition activities of heartwood and sapwood extracts from juniper and olive woods

机译：杜松和橄榄木心材和边材提取物的DNA保护，抗氧化，抗菌和酶抑制活性

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In this study, DNA protective, antioxidant, antibacterial and enzyme inhibiting properties of methanol extracts obtained from juniper and olive heartwood and sapwood were determined. These extracts were tested by five antioxidant methods (DPPH scavenging, FRAP, CUPRAC, metal chelating and phosphomolybdenum). Generally, heartwood extracts of both species are more efficient for DPPH radical scavenging activity, cupric ion reducing activity, ferric reducing antioxidant power and metal chelating activity than sapwood extracts. When compared to heartwood extracts, sapwood extracts have larger inhibition zone in disk diffusion test. In addition, all extracts showed high antibacterial activity against Staphylococcus aureus. DNA protection of both extracts had a capacity to inhibit the DNA damage arisen from Fenton's reagent. The highest DNA protective activity was observed in juniper sapwood extract with 84%. Furthermore, other extracts also indicated more than 60% of DNA protective activity. Olive wood extracts displayed the strongest enzyme inhibition activities against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). Although juniper heartwood extracts showed highest anti-amylase, anti-glucosidase and anti-tyrosinase effects, they had no ability for inhibition BChE. The methanol extracts of olive samples demonstrated the most antioxidant activity (DPPH, CUPRAC and FRAP). In addition, juniper samples showed the highest anti-amylase, anti-tyrosinase, metal chelating and DNA protective activity. According to these results, the extracts of juniper and olive wood can be considered as a source of natural bio active agents for dietary, pharmacological and medicinal applications. This research will also serve as a base for future studies about biological activities of wood extracts.
机译：在这项研究中，确定了从杜松，橄榄心材和边材中获得的甲醇提取物的DNA保护，抗氧化剂，抗菌和酶抑制特性。通过五种抗氧化剂方法（DPPH清除，FRAP，CUPRAC，金属螯合和磷钼）测试了这些提取物。通常，与边材提取物相比，两种物种的心材提取物在DPPH自由基清除活性，铜离子还原活性，三价铁还原抗氧化能力和金属螯合活性方面更有效。与心材提取物相比，边材提取物在圆盘扩散试验中具有更大的抑制区。此外，所有提取物均对金黄色葡萄球菌具有很高的抗菌活性。两种提取物的DNA保护都有抑制Fenton试剂引起的DNA损伤的能力。杜松边材提取物中的DNA保护活性最高，为84％。此外，其他提取物也显示出超过60％的DNA保护活性。橄榄木提取物对乙酰胆碱酯酶（AChE）和丁酰胆碱酯酶（BChE）表现出最强的酶抑制活性。尽管杜松心材提取物显示出最高的抗淀粉酶，抗葡萄糖苷酶和抗酪氨酸酶作用，但它们没有抑制BChE的能力。橄榄样品的甲醇提取物表现出最大的抗氧化活性（DPPH，CUPRAC和FRAP）。此外，杜松样品显示出最高的抗淀粉酶，抗酪氨酸酶，金属螯合和DNA保护活性。根据这些结果，杜松和橄榄木的提取物可以被认为是用于饮食，药理和医学应用的天然生物活性剂的来源。这项研究还将作为未来有关木材提取物生物活性研究的基础。

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