Comparative Evaluation of Argania spinosa and Olea europaea Leaf Phenolic Compounds and their Antioxidant Activity

IF 0.4 4区生物学 Q4 PLANT SCIENCES

GAYANA BOTANICA Pub Date : 2020-06-01 DOI:10.2478/botlit-2020-0007

A. Lfitat, H. Zejli, Abdelkamel Bousselham, Y. E. Atki, B. Lyoussi, A. Gourch, A. Abdellaoui

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引用次数: 1

Abstract

Abstract We conducted this study to determine and compare the content of phenolic compounds and flavonoids in the argan and olive leaves as well as their antioxidant capacity in aqueous, methanolic, and ethyl acetate extracted fractions. In vitro antioxidant activity was evaluated in comparison with synthetic antioxidants by assessing DPPH• radical scavenging capacity, ferric reducing antioxidant power, scavenging ability by inhibiting the β-carotene/linoleic acid emulsion oxidation, and by the ABTS radical scavenging activity assay. Total phenolic content in argan samples ranged from 221.69 ± 2.07 to 1.32 ± 0.01 mg GAE/g DW and in olive samples from 144.61 ± 0.82 to 1.21 ± 0.02 mg GAE/g DW. Total flavonoids content in argan samples varied from 267.37 ± 1.12 to 25.48 ± 0.02 mg QE/g DW, while in olives from 96.06 ± 0.78 to 10.63 ± 0.05 mg QE/g DW. In vitro antioxidant studies strongly confirmed the antioxidant potency of argan and olive leaves and their richness in secondary metabolites that are effective in free radicals scavenging and metal chelating capacities, indicating their antioxidant power.

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刺钢和油橄榄叶中酚类化合物及其抗氧化活性的比较评价

摘要本研究测定并比较了摩洛哥坚果和橄榄叶中酚类化合物和黄酮类化合物的含量，以及水、甲醇和乙酸乙酯萃取部位的抗氧化能力。通过DPPH•自由基清除能力、铁还原抗氧化能力、抑制β-胡萝卜素/亚油酸乳状液氧化的清除能力和ABTS自由基清除能力，与合成抗氧化剂进行体外抗氧化活性的比较。摩洛哥坚果样品中总酚含量为221.69±2.07 ~ 1.32±0.01 mg GAE/g DW，橄榄样品中总酚含量为144.61±0.82 ~ 1.21±0.02 mg GAE/g DW。摩洛哥坚果中总黄酮含量为267.37±1.12 ~ 25.48±0.02 mg QE/g DW，橄榄中总黄酮含量为96.06±0.78 ~ 10.63±0.05 mg QE/g DW。体外抗氧化研究有力地证实了摩洛哥坚果和橄榄叶的抗氧化能力及其丰富的次级代谢物，这些代谢物具有有效的自由基清除和金属螯合能力，表明了它们的抗氧化能力。

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来源期刊

GAYANA BOTANICA Agricultural and Biological Sciences-Plant Science

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The journal welcomes works carried out by scientists of all nationalities, and may be written in either English or Spanish. The journal receives works in systematic, taxonomy, floristic, ecology, physiology, morphology, development, conservation, cytology and phytochemical botany.