Antioxidant and glucosidase activities and phytochemical constituents of Chrysanthoglossum trifurcatum (Desf.)

Objective: To investigate the antioxidant and glucosidase properties and phytochemical constituents of roots, stems, leaves and flowers extracts and aerial parts oil of Chrysanthoglossum trifurcatum (Desf.) (C. trifurcatum). Methods: For extraction from roots, stems, leaves and flowers of C. trifurcatum, methanol, ethyl acetate and petroleum ether solvents were used. Phenols, flavonoids, flavonols and tannins contents were evaluated. More, C. trifurcatum aerial parts oil composition was determined using chromatography/mass spectrometry. The antioxidant effect was estimated by DPPH, ABTS and reducing power test systems. The glucosidase inhibition was determined by colorimetric assay using the enzyme from Aspergillus Niger and the p-nitrophenyl glucopyranoside (pNPG) as substrate. Results: The highest amounts of polyphenols, flavonoids, flavonols and tannins were shown by the methanolic extract of leaves. The main components of the aerial parts oil were limonene (29.21%), γ -terpinene (12.96%), 4-terpenyl acetate (12.18%) and pinene (5.76%). The activity evaluated by DPPH, ABTS and reducing power tests was important for stems (IC

Antioxidant and α-glucosidase activities and phytochemical constituents of Chrysanthoglossum trifurcatum (Desf.)

Objective:To investigate the antioxidant and α-glucosidase properties and phytochemical constituents of roots, stems, leaves and flowers extracts and aerial parts oil of Chrysanthoglossum trifurcatum (Desf.) (C. trifurcatum).Methods:For extraction from roots, stems, leaves and flowers of C. trifurcatum, methanol, ethyl acetate and petroleum ether solvents were used. Phenols, flavonoids, flavonols and tannins contents were evaluated. More, C. trifurcatum aerial parts oil composition was determined using chromatography/mass spectrometry. The antioxidant effect was estimated by DPPH, ABTS and reducing power test systems. The α-glucosidase inhibition was determined by colorimetric assay using the enzyme from Aspergillus niger and the p-nitrophenyl glucopyranoside (pNPG) as substrate.Results:The highest amounts of polyphenols, flavonoids, flavonols and tannins were shown by the methanolic extract of leaves. The main components of the aerial parts oil were limonene (29.21%), γ -terpinene (12.96%), 4-terpenyl acetate (12.18%) and α -pinene (5.76%). The activity evaluated by DPPH, ABTS and reducing power tests was important for stems (ICConclusions:Observed antioxidant and α-glucosidase activities of oil and extracts are attributed to the presence of the active phytochemicals in C. trifurcatum organs. Thus, the C. trifurcatum can be used as a source of antioxidant compounds and dietary supplement to treat patients with type 2 diabetes.

Antimicrobial activity of Tunisian Euphorbia paralias L

Objective To examine the potential antimicrobial activity of Euphorbia paralias L. (Euphorbiaeae) leaves and stems extracts. Methods The antimicrobial activity was tested against six microbial strains: Escherichia coli ATCC 8739, Bacillus subtilis ATCC 6633, Salmonella enterica CIP 8039, Staphylococcus aureus ATCC 6538, Pseudomonas aeruginosa ATCC 9027 and Candida albicans ATCC 90028 by two different methods, the disk method and the dilution method. Results Our results showed the important antimicrobial activity of the chloroform extract of the stems towards the majority of the strains by using both methods. Bacillus subtilis was the most sensitive strain (MIC = MBC = 15 μg/mL). Conclusion Thus, some extracts of Euphorbia paralias can be used in the treatment of infectious diseases caused by microbes.

Phytochemical analysis and biological activities of Hertia cheirifolia L. roots extracts

Objective To test the antioxidant, antimicrobial and α-glucosidase inhibitory activities of the roots extracts from Hertia cheirifolia (H. cheirifolia) L. Methods Total phenolics and total flavonoids content of the different extracts were determined by colorimetric methods and reverse phase high-performance liquid chromatography (RP-HPLC) was performed to identify various chemical components. The different extracts were evaluated for antioxidant activities by 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2-azino-bis-3-ethylenebenzothiozoline-6-sulfonic acid (ABTS[rad]

Phytochemical analysis and biological activities of Hertia cheirifolia L. roots extracts

OBJECTIVE@#To test the antioxidant, antimicrobial and α-glucosidase inhibitory activities of the roots extracts from Hertia cheirifolia (H. cheirifolia) L.@*METHODS@#Total phenolics and total flavonoids content of the different extracts were determined by colorimetric methods and reverse phase high-performance liquid chromatography (RP-HPLC) was performed to identify various chemical components. The different extracts were evaluated for antioxidant activities by 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2-azino-bis-3-ethylenebenzothiozoline-6-sulfonic acid (ABTS) and β-carotene bleaching tests and α-glucosidase inhibitory properties. The antimicrobial activity was carried out in vitro by the broth dilution method.@*RESULTS@#Trans-cinnamic acid, rutin hydrate, naringin and quercetin were the main compounds of the ethyl acetate extract from H. cheirifolia L. This extract has significant scavenging activity to decrease free radicals especially for DPPH and ABTS radicals. As well as, the ethyl acetate extract exhibited an antimicrobial property against bacterial strains. Bacillus licheniformis and Salmonella enterica were the most sensitive strains with minimum inhibitory concentration values of 0.156 mg/mL.@*CONCLUSION@#The ethyl acetate extract was found to be selectively antioxidant and antimicrobial.