OBJECTIVE To investigate the in vitro antioxidant activity of different fractions (R1, R2 and R3) obtained from pet ether extract of black pepper fruits (Piper nigrum Linn.) MATERIALS AND METHODS The fractions R1, R2 and R3 were eluted from pet ether and ethyl acetate in the ratio of 6:4, 5:5 and 4:6, respectively. 1,1-Diphenyl-2-picryl-hydrazyl (DPPH) radical, superoxide anion radical, nitri...

The aim of the present study is to evaluate the antioxidant and proliferative effects of aqueous and ethanolic extracts of Symphytum officinale. Antioxidant activities of extracts were determined by 2,2diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, superoxide radical scavenging and Folin-Ciocalteu assays. Proliferative effects of the extracts were evaluated on 3T3 Swiss albino mouse fibro...

The antioxident effects of crude mucilages (CM) and partially purified mucilages (PPM) from three different Taiwanese yam cultivars—including Dioscorea alata L. cv. Tainong 1 (TN1), Dioscorea alata L. cv. Tainong 2 (TN2), and D. alata L. var. purpurea (Roxb.) Ming-Jen (MJ)—were evaluated, including 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical, hydroxyl radical, and superoxide radical scavenging...

Amorphophallus campanulatus, Alocasia indica and Colocasia esculenta are very popular for their edible corms and leaves, especially in Assam and Bengal and are cultivated there as common food crops. Besides, they are also considered as medicinal plants in Sushruta Samhita and Ayurveda. So, the ethanolic extracts of these tubers were screened for the presence of in vitro antioxidant potential ag...