The synthesis of silver-doped zinc oxide (Ag:ZnO) nanocomposite material was achieved using a simple chemical coprecipitation method, in which 0.2 M zinc chloride and 0.001 M silver nitrate coprecipitated with 25% ammonia solution by pulse mode dispersion using ultrasonicator. The obtained silvery white precipitate was dried overnight at 110 ∘ C in hot air oven, and the powder was collected. The resulted Ag:ZnO nanocomposite was structurally and optically characterized using various techniques. The Xray diffraction (XRD) pattern clearly showed the presence of crystalline Ag:ZnO particles. Further, UV-Vis spectrophotometer and fourier transform infrared spectroscopy (FT-IR) results showed the presence of Ag:ZnO nanocomposite at specific wavelengths. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis confirm that the synthesized Ag:ZnO nanocomposite material was truncated nanorod in shape and has 48 to 226 nm size in diameter.

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The ethanolic extract of Hypnea muciformis (red algae) was tested for hepatoprotective activity against experimentally induced liver damage by Carbon tetrachloride (CCl 4

Objectives: The objectives of the study were to study the in vitro antidiabetic and antioxidant activity of Barleria cristata leaves extracts.Methods: Ethanol extract and petroleum ether extract of leaf and root of B. cristata were tested for their antidiabetic activity. The in vitro antidiabetic activity from α-amylase, α-glucosidase, and antioxidant activity was used to assess the potential activity of the fractions.Results: Our attempt results suggest that ethanol and the petroleum ether leaf extract from B. cristata show signs of dose-dependent increases to inhibitory activity on α-amylase, α-glucosidase enzymes, and antioxidant activity when compared with control. Ethanolic leaves to extract produced maximum in vitro antidiabetic effect and antioxidant activity when compared to petroleum ether extract.Conclusion: The ethanol leaf extract from B. cristata may be used in managing of blood glucose in a medical condition like diabetes.

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