free radicals play an important role in pathological processes such as aging and developing cancer; hence, natural products inhibit free radical production, and can play an important role in preventing diseases. we aimed to evaluate the scavenging activity of free radicals, reducing power, inhibition of lipid peroxidation and malondialdehyde (mda) formation, and the antioxidant composition of r...

Aqueous and ethanol extracts of oven and freeze-dried Streblus asper leaves were investigated using DPPH assay. The presence of phenolic compounds and flavonoids in the extracts, which were detected by Folin and colorimetric assays, respectively, may be responsible for the antioxidant activities of S. asper. The different drying treatments resulted in significant differences (p < 0.05) in the a...

BACKGROUND Stress caused by free radicals accumulation result into many hazardous diseases. A number of investigations are focusing to find out the plant oriented natural antioxidant moieties. The basic aim of this research was to investigate the antioxidant potential, total Phenolic and flavonoids contents and photochemical screening of the crude methanol extract and its derived various fracti...

Long exposure of UV radiation increases risk of skin diseases such as cancer and photoallergic reactions. UV-B (280-320 nm) radiation is mainly responsible for inducing skin problems. Skin protection is a suitable method in the fight against ultraviolet radiation induced damage. Various synthetic agents have been used as photo protective but because of their potential toxicity in humans, they h...

background and objectives: dried pulps and peels of ziziphus jujuba fruits are commonly applied as food because of their high nutritional value. it has been widely used in traditional medicine as laxative, tonic, wound healing agent and appetizer. the aim of this study was to evaluate the anti-melanogenic effects of z. jujuba fruit. methods: fruit extracts were obtained by two different extract...

the hawthorn fruits have been used as food and medicine for centuries. in the present study, pulp and seed extract of crataegus elbursensis rech. f. fruits belonging to the family rosaceae and native of northern part of iran were evaluated for the polyphenol contents, antiradical, antioxidant, and antibacterial activities. the total phenolic, flavonoid, and anthocyanin contents of methanolic pu...

BACKGROUND Exogenous pretreatment of oxidative stress on callus cultures of Bellis perennis L. (common daisy) induced catalase (CAT), superoxide dismutase (SOD), total phenolic, total flavonoid, total protein and selected commercial phenolic compounds production and accumulation. MATERIALS AND METHODS The callus culture obtained from B. perennis pedicel explants was incubated on Murashige and...