Phytochemical screening and in vitro antioxidant activities of Mentha suaveolens Ehrh. extract

Moha Afrokh, K. Boumhara, K. Chatoui̇, S. Tahrouch, A. Hati̇mi̇, H. Harhar, M. Tabyaoui
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Abstract

Within the framework of the valorization of the medicinal and aromatic plants of Morocco, we were interested during this study in the characterization and the phytochemical identification of some secondary metabolites present in Mentha suaveolens Ehrh. and the evaluation of the antioxidant activity of this species using four methods: DPPH free radical scavenging test, 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid, (ABTS) radical cation scavenging test, FRAP test measuring antioxidant power, and β bleaching-carotene. Mentha suaveolens is a species belonging to the Lamiaceae family, harvested in southern Morocco, and widely used in traditional medicine for its biological properties attributed mainly to phenolic compounds. Just as they protect plants, secondary metabolites also have a protective role in the human body and are therefore beneficial to our health. They are attributed, in particular, with antioxidant, anti-inflammatory, and antibacterial properties. In this regard, characterization and identification tests of secondary metabolites revealed the presence of alkaloids, flavonoids, catechic tannins, and terpenes in this plant, whereas, the aerial parts of this species are devoid of coumarins, cyanogenic compounds, saponins and free quinones. The quantification of the phenolic compounds gave high contents, with contents of total phenols (54.75 ± 5.62) μg GAE/mg, total flavonoids (32.41 ± 0.41) μg QE/mg, and total condensed tannins (27 ± 1) μg CE/mg. In addition, the results obtained show that Mentha suaveolens extract has stronger antioxidant activity using the β-Carotene method with IC50 (0.24 ± 0.06) mg/mL against IC50 (0.021 ± 0.001) mg/mL for the standard antioxidant by the DPPH free radical scavenging test.
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薄荷的植物化学筛选及体外抗氧化活性。摘录
在摩洛哥药用和芳香植物的定价框架内,我们在本研究中对薄荷中存在的一些次级代谢产物的表征和植物化学鉴定感兴趣。采用DPPH自由基清除试验、2,2'-叠氮双-(3-乙基苯并噻唑啉-6-磺酸、(ABTS)自由基阳离子清除试验、测定抗氧化能力的FRAP试验和β漂白胡萝卜素四种方法评价该物种的抗氧化活性。薄荷是Lamiaceae科的一种,原产于摩洛哥南部,因其主要由酚类化合物组成的生物特性而被广泛用于传统医学。次级代谢产物就像保护植物一样,对人体也有保护作用,因此对我们的健康有益。它们特别具有抗氧化、抗炎和抗菌的特性。在这方面,次级代谢产物的表征和鉴定测试表明,该植物中存在生物碱、类黄酮、儿茶素单宁和萜烯,而该物种的地上部分不含香豆素、发蓝化合物、皂苷和游离醌。酚类化合物的含量较高,总酚含量为(54.75±5.62)μgGAE/mg,总黄酮含量为(32.41±0.41)μgQE/mg,总缩合单宁含量为(27±1)μg CE/mg。此外,用β-胡萝卜素法测定薄荷提取物的抗氧化活性,其IC50为(0.24±0.06)mg/mL,用DPPH自由基清除试验测定其标准抗氧化物的IC50(0.021±0.001)mg/mL。
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来源期刊
International Journal of Secondary Metabolite
International Journal of Secondary Metabolite Biochemistry, Genetics and Molecular Biology-Biotechnology
CiteScore
1.40
自引率
0.00%
发文量
28
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