Betel leaves powder extracts were successfully isolated and showed positive antioxidant activity. The antioxidant activity of these crude extracts varied with different solvents. All the crude extracts (excluded distilled water extract) showed increasing antioxidant activity when the concentration increased. Methanol crude extract showed the highest antioxidant activity which was 94.11 % compared to hexane extract and ethyl acetate extract which were 91.83 % and 93.73 % respectively. The IC50 value of methanol and ethyl acetate crude extract were unable to determine due to their high...

Extrakte aus Betelblättern wurden erfolgreich isoliert und zeigten eine positive antioxidative Aktivität. Die antioxidative Aktivität dieser Rohextrakte variierte mit verschiedenen Lösungsmitteln. Alle Rohextrakte (mit Ausnahme des destillierten Wasserextrakts) zeigten mit zunehmender Konzentration eine steigende antioxidative Aktivität. Der Methanol-Rohextrakt zeigte mit 94,11 % die höchste antioxidative Aktivität im Vergleich zu Hexan- und Ethylacetat-Extrakt, die 91,83 % bzw. 93,73 % betrugen. Der IC50-Wert von Methanol- und Ethylacetat-Rohextrakt konnte aufgrund des hohen...

Des extraits de poudre de feuilles de bétel ont été isolés avec succès et ont montré une activité antioxydante positive. L'activité antioxydante de ces extraits bruts a varié avec différents solvants. Tous les extraits bruts (sauf l'extrait d'eau distillée) ont montré une activité antioxydante croissante lorsque la concentration augmente. L'extrait brut de méthanol a montré l'activité antioxydante la plus élevée qui était de 94,11 % par rapport à l'extrait d'hexane et à l'extrait d'acétate d'éthyle qui étaient respectivement de 91,83 % et 93,73 %. La valeur IC50 des...

The compound from the soursop have been successfully isolated and screened for their antimicrobial properties. The soursop was macerated with four different solvents (methanol, ethanol, hexane and distilled water) using maceration technique. Thin layer chromatography (TLC) and column chromatography were used to isolate the crude extract and fractions by using different types of solvent systems. All the crude extracts undergoes Thin layer chromatography (TLC) for isolation and separation of compounds and ethanolic crude extract was selected as the best crude extract. The best solvent system...

The extraction and isolation of Carica Papaya Leaf extract were investigated under different solvents along with the antimicrobial activity of the plant's extract. The Carica Papaya leaves were macerated with different type of solvents (methanol, hexane, ethyl acetate and distilled water) at room temperature for 3 days. Thin layer chromatography and column chromatography were used to isolate the compounds under varied solvent combinations. The fraction from column chromatography were further analyzed using Gas Chromatography Mass Spectrometry (GC-MS). Disc diffusion method were used to...