Browsing by Author "Kortei Korley Nii"

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    Antimicrobial properties of metal piperidine dithiocarbamate complexes against Staphylococcus aureus and Candida albicans
    (ELSEVIER, 2021) Boadi Owusu Nathaniel; Degbevi Mawuli; Badu Mercy; Saah Ama Selina; Kortei Korley Nii; 0000-0001-8038-1453
    In this study, a series of metal piperidine dithiocarbamate complexes (M = Zn, Cu, Co, Fe, Ni, Bi and Ag) were synthesized and characterized using microelemental, 1 HNMR, mass spectrometry and FT-IR analyses. Antimicrobial properties of the complexes were tested against Staphylococcus aureus and Candida albicans in a 96-well plate, using the broth dilution assay. The antimicrobial activity of the complexes was in the order Zn > Co > Cu > Ag = Bi = Ni > Fe against Staphylococcus aureus and Co > Zn > Fe > Ag = Bi = Cu = Ni against Candida albicans. The results indicate that the complexes were effective against the microorganisms at high concentrations.
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    Nutritional composition and antioxidant properties of three varieties of carrot ( Daucus carota )
    (ELSEVIER, 2021) Boadi Owusu Nathaniel; Badu Mercy; Kortei Korley Nii; Saah Ama Selina...et al
    Carrots are a potentially rich source of antioxidants in addition to their nutritional proper- ties. In this study, the nutritional composition and antioxidant properties of three varieties of carrots, namely Kuroda, Pamela and Amazonia cultivated in Ghana were determined. The peroxide scavenging method was used to determine the antioxidant properties of the ethanolic extracts of the carrot varieties at different concentrations. The protein, crude fi- bre, fat and carbohydrate contents of the carrot varieties ranged 6.46 –10.73 %, 7.18 –8.87 %, 1.97 –4.31 % and 6.25 –8.39 % respectively. The three varieties had high moisture contents ranging from 69.06 to 75.30 %. The antioxidant properties were high even at low concentrations of extract, and their activity increased with time in the order Amazonia > kuroda > pamela. Amazonia had the highest fibre, protein and carbohydrate contents and the lowest moisture content, making it the most preferred variety.