May 2018

Screening for total antioxidant activity, flavonoids and phenolics variability in forty-five accessions of roselle (Hibiscus sabdariffa L.)

Build-up of free radicals in the human body can cause oxidative stress which may invariably lead to degenerative diseases and eventual death. Antioxidants such as polyphenols and flavonoids found in fruits and vegetables have been shown to protect the body against the damaging effects of these free radicals. Roselle contains high amounts of antioxidants and its leaves are often used for sauces or in herbal preparations...

Author(s): W. Nunekpeku, H. M. Amoatey, S. Agbenyegah, M. Owusu-Ansah, V. Oduro, K. E. Danso, D. K. Asare and E. Achoribo

May 2018

Isolation and screening of antibiotic producing actinomycetes from rhizosphere and agricultural soils

Antibiotics are secondary metabolites produced by microorganisms. Actinomycetes are the top producers of antibiotics. The study was designed to isolate and screen antibiotic producing actinomycetes obtained from rhizosphere of plants and agricultural soils. A total of 30 actinomycetes were isolated. Out of the 30 actinomycetes, 18 (60%) showed antimicrobial activities against one of the tested microorganisms of which 9...

Author(s): Atsede Muleta, and Fassil Assefa