Background and objectives: Dorema ammoniacum D. Don (Apiaceae) is a monocarpic plant endemic to central Iran. The gum resin of this species is a known therapeutic agent in Iranian, Indian and Western traditional medicines. The aim of the present study was to investigate essential oil constituents and evaluation of antioxidant and antibacterial activities of the essential oils and extracts of D....

The reactivity of tocopherols with 2,2-diphenyl-1-picrylhydrazyl (DPPH) was studied in model systems in order to establish a method for quantifying vitamin E in plant oils. The method was optimized with respect to solvent composition of the assay medium, which has a large influence on the course of reaction of tocopherols with DPPH. The rate of reaction of α-tocopherol with DPPH is higher than ...

background: plant cell cultivations are considered as an alternative to agricultural processes for producing valuable phytochemicals (secondary metabolites). the use of plant cell cultures has overcome several inconveniences for the production of secondary metabolites. objective: the essential oils isolated from roots of 24-month-old field grown valerian (valeriana sisymbriifolium) and hairy ro...

background: medicinal plants are considered new resources for producing agents that could act as alternatives to antibiotics in the treatment of antibiotic-resistant bacteria. the aim of this study was to evaluate the antibacterial activity of 28 plant extracts and oils against four gram-negative bacterial species. methods: experimental, in vitro, evaluation of the activities of 28 plant extrac...

Oilseed crops are major sources of oils for human nutrition, and an increasing proportion is also being utilized for industrial purposes. Recent advances in our understanding of the basic biochemistry of seed oil biosynthesis, coupled with identification of genes for oilseed modification, have set the stage for the genetic engineering of oilseed crops that produce ‘designer’ plant seed oils tai...

Essential oils are considered as very complex natural mixtures containing numerous components at quite various concentrations. Lythrum salicaria has not been previously subjected to examination of its volatile oil. The present study was carried out to evaluate the essential oil composition of the flowering aerial parts of the plant by using conventionally hydro-distillation (HD) and microwave a...

Humans use plants for thousands of years to treat various ailments, in many developing countries; much of the population relies on traditional doctors and their collections of medicinal plants to cure them. Essential oils have many therapeutic properties. In herbal medicine, they are used for their antiseptic properties against infectious diseases of fungal origin, against dermatophytes, those ...

Quantitative analysis of triacylglycerols (TGs) in plant oils and animal fats by normalization of peak areas can lead to erroneous results due to the large response differences with common HPLC detectors between the various TGs. The charged aerosol detector (CAD), that generates an almost universal response for non-volatile compounds, was combined with non-aqueous reversed-phase HPLC (NARP-HPLC...

Humans use plants for thousands of years to treat various ailments, in many developing countries; much of the population relies on traditional doctors and their collections of medicinal plants to cure them. Essential oils have many therapeutic properties. In herbal medicine, they are used for their antiseptic properties against infectious diseases of fungal origin, against dermatophytes, those ...

Objective: We prospectively evaluated the association between intakes of 1) Alpha-linolenic (ALA; 18:3n-3) [plant, like flax seed, omega-3] 2) Eicosapentaenoic (EPA; 20:5n-3) [fish omega-3] 3) Docosahexaenoic (DHA; 22:6n-3) [fish and cold water algae omega-3] 4) Linoleic (LA; 18:2n-6) [plant omega-6, like corn, sunflower, safflower, peanut, soy oils] 5) Arachidonic acid (AA; 20:4n-6) [animal om...