Lipid peroxidation and tyrosinase inhibition by lichen symbionts grown in vitro
The symbionts of lichen species Arthothelium awasthii, Heterodermia podocarpa, and Parmotrema tinctorum were isolated and cultured on various nutrient media incubated in a growth chamber. Methanolic extracts of one year old symbiont cultures were taken for evaluating their potential to inhibit lipid peroxidation and tyrosinase enzyme activity. The extracts of all cultured...
Maytenus ilicifolia as source of antioxidants and anti-radicals agents and its action on neutrophils peroxidase (myeloperoxidase)
Maytenus ilicifolia is an important plant with a great potential for cancer treatment and has a popular and diffused use, as tea, in Brazil and in other countries against gastric ulcers, dyspepsia and others gastric problems. In this paper, the antioxidant and anti-radical activities of this plant were compared with trolox and uric acid by their abilities as scavengers of DPPH·, ABTS·+,...
Effects of Landolphia owariensis leaf extract on the liver function profile and haemoglobin concentration of albino rats
The effects of aqueous extract of Landolphia owariensis leaves on the biochemical indices of liver function were investigated in Wister strain of albino rats. Preliminary phytochemical analysis of the plant leaves showed the presence of tannins, alkaloids, flavonoids and saponins. Acute toxicity tests of the extract gave an LD50of 3370 mg/kg. Liver function tests revealed that the serum...