The growth-inhibiting activity of Tabebuia impetiginosa Martius ex DC dried inner bark-derived constituents against Helicobacter pylori ATCC 43504 was examined using paper disc diffusion and minimum inhibitory concentration (MIC) bioassays. The activity of the isolated compounds was compared to that of the commercially available anti-Helicobacter pylori agents, amoxicillin, metronidazole, and t...

The incorporation of trees on traditional agricultural land has the potential for providing beneficial conditions understory crops by altering microclimate. Under these assumptions, we conducted a study maize productivity intercropped in 14-year-old walnut orchard measuring growth and yield parameters, water nutrient uptake. Overall, found that decreased maximum air temperature increased humidi...

In Rwanda, the roots of Pentas longiflora Oliv. (Rubiaceae) have been used for a long time to treat Pityriasis versicolor . However, many people reported use leaves instead roots. This research was conducted compare phytochemical composition and establish chromatographic methods standardization extracts P. longiflora. During this process, three new pentalongin glycosides (pentalonginoside A, pe...

Extracellular polymeric substances (EPS) secreted by microorganisms make up an important constituent of labile and semilabile dissolved organic matter in surface water. There are no literature reports on the capability of EPS to reduce organic pollutants. This study demonstrated that EPS could effectively reduce a probe nitroaromatic compound, 1,3-dinitrobenzene. In aqueous dissolved EPS (60.3 ...