Objective:To compare the antioxidant and anti-genotoxic properties of Alpinia(A.)galanga,Curcuma(C.)amada,and C.caesia.Methods:Cytotoxicity of ethanolic extracts of A.galanga,C.amada,and C.caesia at selected doses was...Objective:To compare the antioxidant and anti-genotoxic properties of Alpinia(A.)galanga,Curcuma(C.)amada,and C.caesia.Methods:Cytotoxicity of ethanolic extracts of A.galanga,C.amada,and C.caesia at selected doses was evaluated by trypan blue,MTT,and flow cytometry-based assays.Genotoxicity and anti-genotoxicity(against methyl methanesulfonate,35μM and H2O2,250μM)of these plants were studied by comet assay in human lymphocytes in vitro.Furthermore,DPPH,ABTS,FRAP,lipid peroxidation,and hydroxyl radical scavenging assays were performed to study the antioxidant potentials of the plants.Finally,anti-genotoxic potential of C.amada was validated in Swiss albino mice using comet assay.Phytochemical composition of C.amada was determined by GC/MS and HPLC.Results:The selected doses(2.5,5,and 10μg/mL)of A.galanga,C.amada,and C.caesia were non-toxic by cytotoxicity tests.All three ethanolic extracts of plant rhizomes demonstrated antioxidant and anti-genotoxic properties against methyl methanesulfonate-and H2O2-induced oxidative stress in human peripheral blood lymphocytes in vitro.Multivariate analysis revealed that various antioxidant properties of these extracts in DPPH,ABTS,and FRAP assays were strongly correlated with their total phenolic constituents.C.amada extract conferred protection against cyclophosphamide-induced DNA damage in the bone marrow cells of mice and DNA damage was significantly inhibited by 2.5 mg/kg C.amada extract.Conclusions:C.amada is rich in potentially bioactive molecules and exhibits potent antioxidant activities.Its anti-genotoxicity against cyclophosphamide-induced oxidative stress is also confirmed in this study.展开更多
Objective: To isolate and identify the antifungal compounds from Curcuma amada. Methods: The antifungal activity was measured by the diameter of colonies grown on Petri dish,microscopic observation,and CLSI microdilut...Objective: To isolate and identify the antifungal compounds from Curcuma amada. Methods: The antifungal activity was measured by the diameter of colonies grown on Petri dish,microscopic observation,and CLSI microdilution methods. The antifungal compounds were isolated through bioactivity guided purification by using silica gel and high-performance liquid chromatography. Structural identification of the antifungal compounds was conducted using 1 H NMR,13 C NMR,and liquid chromatography-tandem mass spectrometry. Results: The purified antifungal compounds were zederone and furanodienone. These two compounds showed dose-dependent antifungal activity against Fusarium solani sensu lato. The concentration required for 50% growth inhibition(IC50) of FSSL ranged from 115 to 129 μM and 82 to 91 μM for zederone and furanodienone,respectively. Conclusion: This study suggested that the isolated compounds from Curcuma amada could be promising natural antifungal agents to control the diseases caused by Fusarium solani sensu lato.展开更多
文摘Objective:To compare the antioxidant and anti-genotoxic properties of Alpinia(A.)galanga,Curcuma(C.)amada,and C.caesia.Methods:Cytotoxicity of ethanolic extracts of A.galanga,C.amada,and C.caesia at selected doses was evaluated by trypan blue,MTT,and flow cytometry-based assays.Genotoxicity and anti-genotoxicity(against methyl methanesulfonate,35μM and H2O2,250μM)of these plants were studied by comet assay in human lymphocytes in vitro.Furthermore,DPPH,ABTS,FRAP,lipid peroxidation,and hydroxyl radical scavenging assays were performed to study the antioxidant potentials of the plants.Finally,anti-genotoxic potential of C.amada was validated in Swiss albino mice using comet assay.Phytochemical composition of C.amada was determined by GC/MS and HPLC.Results:The selected doses(2.5,5,and 10μg/mL)of A.galanga,C.amada,and C.caesia were non-toxic by cytotoxicity tests.All three ethanolic extracts of plant rhizomes demonstrated antioxidant and anti-genotoxic properties against methyl methanesulfonate-and H2O2-induced oxidative stress in human peripheral blood lymphocytes in vitro.Multivariate analysis revealed that various antioxidant properties of these extracts in DPPH,ABTS,and FRAP assays were strongly correlated with their total phenolic constituents.C.amada extract conferred protection against cyclophosphamide-induced DNA damage in the bone marrow cells of mice and DNA damage was significantly inhibited by 2.5 mg/kg C.amada extract.Conclusions:C.amada is rich in potentially bioactive molecules and exhibits potent antioxidant activities.Its anti-genotoxicity against cyclophosphamide-induced oxidative stress is also confirmed in this study.
文摘Objective: To isolate and identify the antifungal compounds from Curcuma amada. Methods: The antifungal activity was measured by the diameter of colonies grown on Petri dish,microscopic observation,and CLSI microdilution methods. The antifungal compounds were isolated through bioactivity guided purification by using silica gel and high-performance liquid chromatography. Structural identification of the antifungal compounds was conducted using 1 H NMR,13 C NMR,and liquid chromatography-tandem mass spectrometry. Results: The purified antifungal compounds were zederone and furanodienone. These two compounds showed dose-dependent antifungal activity against Fusarium solani sensu lato. The concentration required for 50% growth inhibition(IC50) of FSSL ranged from 115 to 129 μM and 82 to 91 μM for zederone and furanodienone,respectively. Conclusion: This study suggested that the isolated compounds from Curcuma amada could be promising natural antifungal agents to control the diseases caused by Fusarium solani sensu lato.
