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Antioxidant,antimicrobial,and α-glucosidase inhibitory activities of saponin extracts from walnut(Juglans regia L.) leaves

引用

Asian Pacific Journal of Tropical Biomedicine 2023年第2期13卷 60-69页

作者： Youssef Elouafy Adil El Yadini salma mortada Mohamed Hnini Hicham Harhar Asaad Khalid Ashraf NAbdalla Abdelhakim Bouyahya Khang Wen Goh Long Chiau Ming My El Abbes Faouzi Mohamed Tabyaoui Laboratory of Materials Nanotechnology and EnvironmentFaculty of SciencesMohammed V University in RabatRabatMorocco Laboratories of Pharmacology and Toxicology Pharmaceutical and Toxicological Analysis Research TeamFaculty of Medicine and PharmacyMohammed V University in RabatRabatMorocco Center of Plant and Microbial Biotechnology Biodiversity and EnvironmentMicrobiology and Molecular Biology TeamFaculty of SciencesMohammed V University in RabatRabatMorocco Substance Abuse and Toxicology Research Center Jazan UniversityJazan 45142Saudi Arabia Medicinal and Aromatic Plants and Traditional Medicine Research Institute National Center for ResearchKhartoumSudan Department of Pharmacology and Toxicology College of PharmacyUmm Al-Qura UniversityMakkahSaudi Arabia Laboratory of Human Pathologies Biology Faculty of SciencesMohammed V University in RabatMorocco Faculty of Data Science and Information Technology INTI International UniversityNilaiMalaysia School of Medical and Life Sciences Sunway UniversitySunway CityMalaysia

Objective:To investigate the relationship between triterpenoid saponin content and antioxidant,antimicrobial,and α-glucosidase inhibitory activities of 70%ethanolic,butanolic,aqueous,supernate and precipitate extracts of Juglans regia ***:Triterpenoid saponins of different Juglans regia leaf extracts were measured by the vanillin *** activity was evaluated against DPPH and ABTS free *** also assessed α-glucosidase inhibitory and antimicrobial activities of the leaf ***’s correlation coefficient was evaluated to determine the correlation between the saponin content and biological ***:The butanolic extract was most effective against DPPH with an IC50of 6.63μg/mL,while the aqueous extract showed the highest scavenging activity against ABTS free radical with an IC50of 42.27μg/***’s correlation analysis indicated a strong negative correlation (r=-0.956) between DPPH radical scavenging activity (IC50) and the saponin content in the samples *** addition,the aqueous extract showed the best α-glucosidase inhibitory activity compared with other *** the extracts had fair antibacterial activity against Bacillus subtilis,Escherichia coli,and Klebsiella pneumoniae except for the aqueous ***:Juglans regia extracts show potent antioxidant,antimicrobial,and α-glucosidase inhibitory *** is a correlation between saponin levels in Juglans regia leaf extracts and the studied ***,additional research is required to establish these relationships by identifying the specific saponin molecules responsible for these activities and elucidating their mechanisms of action.

关键词： Juglans regia leaves Triterpenoid saponin Antioxidant activity DPPH ABTS Antidiabetic activity α-Glucosidase Antimicrobial activity

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