swertia species are widespread in eastern and southern asian countries and used in traditional medicine as anti-pyretic, analgesic, gastro and liver tonic. among different species, only swertia longifolia grows in iran. in this investigation, antioxidant, cytotoxic and acetylcholinesterase inhibitory activities of s. longifolia have been studied. aerial parts and roots of the plant were collect...

the antioxidant activity of the different extracts and fractions of aerial parts of otostegia persica (burm.) boiss. were evaluated using beta-carotene bleaching and lipid peroxidation methods. the inhibitory activity of the plant extracts on the peroxidation of linoleic acid were measured by ferric thiocyanate method in comparison to methanolic extracts of green tee, ginkgo biloba, vit.e and b...

The in vitro antioxidant potential assay between ethanolic extracts of two species from the genus Vitex (Vitex negundo L. and Vitex trifolia L.) belonging to the Lamiaceae family were evaluated. The antioxidant properties of different extracts prepared from both plant species were evaluated by different methods. DPPH scavenging, nitric oxide scavenging, and β-carotene-linoleic acid and ferrous ...

Since ancient time, Phyllunthus niruri L. are using in many herbal preparations. Increasing demand of P. niruri lead to adulteration, and thus there is a global need to develop quality plant material. In present investigation, an efficient in vitro technology was developed for a rapid and large-scale production of P. niruri via axillary bud proliferation using nodal segments of the mature plant...

Sulfur (S) is an essential macronutrient that has been proved to play an important role in regulating plant responses to various biotic and abiotic stresses. The present study was designed to investigate the effect of S status on polish wheat plant response to Mn toxicity. Results showed that Mn stress inhibited plant growth, disturbed photosynthesis and induced oxidative stress. In response to...

Antioxidant enzymes protect cells against oxidative stress and are associated with stress tolerance and longevity. In animals, variation in their activities has been shown to relate to species ecology, but in plants, comparative studies with wild species are rare. We investigated activities of five antioxidant enzymes - ascorbate peroxidase (APX), catalase (CAT), glutathione reductase (GR), per...

Free radicals induce numerous diseases by lipid peroxidation and DNA damage. It has been reported that some of the extracts from plants possess antioxidant properties capable of scavenging free radicals in vivo. Vetiveria zizanioides belonging to the family Gramineae, is a densely tufted grass which is widely used as a traditional plant for aromatherapy, to relieve stress, anxiety, nervous tens...

Antioxidants are substances that inhibit oxidation and thus prevent cell damage. The objective of the study was to determine the antioxidant activity of the leaves as well as blue and white flowers of Clitoria ternatea. They exhibited significant antioxidant activity and the sample from the blue flower bearing plant showed better scavenging activity. The results show that Clitoria ternatea can ...

Phytochemicals protect against oxidative stress which in turn helps in maintaining the balance between oxidants and antioxidants. In recent times natural antioxidants are gaining considerable interest among nutritionists, food manufacturers, and consumers because of their perceived safety, potential therapeutic value, and long shelf life. Plant foods are known to protect against degenerative di...

Antioxidant activity is a very useful parameter for characterizing the potential of biological samples to scavenge reactive oxygen and nitrogen species and other dangerous free radicals in specific reaction media. This parameter has been extensively used in fields such as phytochemistry, food chemistry, food science and technology, human and animal physiology, dietetics and nutrition. It has al...