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Proximate composition phytochemical analysis and in vitro antioxidant potentials of extracts of Annona muricata (Soursop)

机译：番荔枝番荔枝提取物的近成分植物化学分析和体外抗氧化潜能

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摘要

Numerous bioactive compounds and phytochemicals have been reported to be present Annona muricata (Soursop). Some of these chemical compounds have been linked to the ethnomedicinal properties of the plant and its antioxidant properties. The aim of this study was to assess the proximate composition, phytochemical constituents and in vitro antioxidant properties of A. muricata using standard biochemical procedures. The defatted Annona muricata crude methanolic extracts of the different parts of the plant were used for the estimation of proximate composition and phytochemical screening. The crude methanolic extracts of the different parts of the plant were also fractionated using solvent–solvent partitioning. Petroleum ether, chloroform, ethyl acetate, methanol, and methanol‐water (90:10) were the solvents used for the fractionation. The different fractions obtained were then used to perform in vitro antioxidant analyses including, 1, 1‐diphenyl‐2‐picrylhydrazyl (DPPH) radical scavenging ability, ferric reducing properties, and hydroxyl radical scavenging ability. The leaf methanolic extract had a higher lipid content, whereas its chloroform fraction demonstrated a better ability to quench DPPH free radical. The root‐bark methanol‐water, leaf methanol, fruit pulp chloroform, and leaf petroleum ether fractions demonstrated potent ferric reducing properties. The leaf and stem‐bark petroleum ether fractions demonstrated better hydroxyl‐free radical scavenging abilities. The leaf and fruit pulp of Annona muricata have a very potent antioxidant ability compared to the other parts of the plant. This can be associated with the rich phytochemicals and other phytoconstituents like phenols, flavonoids, alkaloids, and essential lipids, etc. Significant correlations were observed between the antioxidant status and phytochemicals present. These results thus suggest that some of the reported ethnomedicinal properties of this plant could be due to its antioxidant potentials.
机译：据报道存在大量的生物活性化合物和植物化学物质（番荔枝番荔枝）。这些化合物中的一些已与植物的人种学特性及其抗氧化特性有关。这项研究的目的是使用标准的生化程序来评估紫茉莉的最接近组成，植物化学成分和体外抗氧化特性。将植物不同部位的脱脂的Annona muricata粗甲醇提取物用于估算其近似组成和进行植物化学筛选。还使用溶剂-溶剂分配法分离了工厂不同部分的粗甲醇提取物。石油醚，氯仿，乙酸乙酯，甲醇和甲醇水（90:10）是用于分馏的溶剂。然后，将获得的不同馏分用于体外抗氧化剂分析，包括1、1,1-二苯基-2-吡啶甲基肼基（DPPH）自由基清除能力，三价铁还原性能和羟基自由基清除能力。叶片甲醇提取物具有较高的脂质含量，而其氯仿馏分显示出更好的猝灭DPPH自由基的能力。根皮甲醇水，叶甲醇，果肉氯仿和叶石油醚馏分显示出有效的三价铁还原性能。叶和茎-树皮石油醚馏分表现出更好的清除羟自由基的能力。与植物的其他部分相比，番荔枝番荔枝的叶片和果肉具有非常强的抗氧化能力。这可能与丰富的植物化学物质和其他植物成分（例如酚，类黄酮，生物碱和必需脂质等）有关。在抗氧化剂状态与所存在的植物化学物质之间观察到了显着的相关性。因此，这些结果表明，该植物的某些民族学特性可能归因于其抗氧化能力。

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