The research objectives were to identify the secondary metabolite components, total phenolic content and determine antioxidant activity of ethanol extract red betel leaf (Piper crocatum Ruiz & Pav.). extraction process was carried out by materation using as a solvent. Determination colorimetrically with Folin-Ciocalteu reagent measured at maximum wavelength 765 nm. DPPH method spectrophotom...

Honey contains various compounds that function as antioxidants, one of which is phenolic compounds. The purpose this study was to determine the correlation between content multiflora honey from Malang and Alastuwo on antioxidant activity using DPPH method (2,2-Diphenyl-1-picrylhydrazyl). Qualitative test with FeCl3 color reagent, determination total by UV-Vis spectrophotometry Folin-Ciocalteu r...

Background:  Cisplatin has cytotoxic effects through free radical generation. Reports indicate that various members of Pinaceae family may have antioxidant properties. In this study we investigated the cytoprotective effects of needle volatile oil and bark extract of Pinus eldarica in hepatoma G2 (HepG2) cell line.  Methods: Using the maceration technique, we obtained the ethanolic extract of ...

the aim of the study was to evaluate the antioxidant and free radical scavenging properties and to determine the phenolic content of the ethanol extract from five mentha species [m. longifolia (l.) huds., m. piperita l., m. pulegium l., m. rotundifolia (l.) huds., and m. spicata l.]. the antioxidant activities of the extracts were investigated with two different methods, 2,2’-diphenyl-1-picrylh...

this study was designed to examine the in vitro antioxidant activities and total phenolic contents of the methanolic extracts from male inflorescence of salix aegyptiaca l. grown in iran. the methanolic extract (me) and its three fractions including water (wf), butanol (bf) and chloroform (cf) were prepared and then their antioxidant activities, as well as total phenolic contents, were evaluate...

background & aim: fruits from the jujube plant (ziziphus jujuba) possess health-promoting effects and medicinal properties. jujube has a long history of usage as a remedy in iranian traditional medicine and is recommended for the treatment of some diseases. this study investigated the variations in antioxidant capacities (aox), total phenol (tph), total flavonoid (tf) and total anthocyanin ...

The objective of the research was to evaluate antioxidant activity, phenols and volatile compounds different types coffee infusions. We worked with Catimor variety used five methods obtain infusion (espresso, V60, siphon, French press a traditional local method). For each infusion, capacity determined 2,2-Diphenyl-1-Picrylhydrazyl 2,2′-azinobis-3-ethylbenzothiazoline-6-sulfonic acid techniques,...

objective: antioxidants are considered as the main factors in the inhibition of unwanted oxidation reactions. materials and methods: in this research the antioxidant potential of the fresh fruits of 4 cultivars (a to d) of malus domestica (m. domestica) cultivated in the kashan, qamsar area was evaluated. the antioxidant activity of the samples were evaluated using two complementary antioxidant...