A simple and high-throughput screening method for the analysis of 136 pesticides in avocado ( Persea americana ) by LC-(+)-ESI-MS/MS and GC-MS/MS is presented. A modified QuEChERS sample preparation method was developed to improve the extraction recovery of highly lipophilic pesticides. Extracts from minced avocados after acetonitrile (MeCN) extraction were directly injected to LC-MS/MS, wherea...

multiple sclerosis (ms) is the most common autoimmune disease, especially among young’s. neuroinflammation results from inflammation in cns and it may cause different disorders and diseases .it is also known as a detriment in multiple sclerosis. in fact, it causes problems and symptoms in ms. in ms the self-immune cells attack the myelin of neurons, it maybe the nerve in brain or spinal cord. d...

due to the uncensored use of pesticides in the agricultural regions of lebanon, the contaminationrisks of drinking water by organic residues increase periodically in planting seasons. no previous work havebeen considered in north lebanon plain concerning pesticide pollution though it is the second agriculturalzone in lebanon with an excessive activity. in this context, the aim of this study was...

objective: ipomoea mauritiana is used in both ayurveda and folk medicine systems. the tuberous roots are known to be diuretic, depurative, carminative, and anthelmintic. the objective of the current study was to identify phenolic antioxidants from i. mauritiana using spectrophotometric and lc-ms analysis. materials and methods: an activity-guided fractionation and purification process was used t...

many of the persistent organic pollutants (pops) with endocrine disrupting properties are monitored regularly by risk assessors with limited resources, where analytical procedures are usually laborious, expensive, and not ecofriendly. moreover, these analyses were frequently advanced aiming one class of pollutants, consequently inefficient to correspond the demand of monitoring a quickly rising...

background & aim:zea mays leaf used traditionally in ibibio ethno medicine in southern nigeria to treat malaria and other inflammatory diseases. these anti-inflammatory and analgesic properties were evaluated against experimentally induced inflammation and pains using standard models. experimental: the effects of ethanol leaf extract of zea mays (170 -510 mg/kg) on experimentally induced inflam...

in this work the chemical composition and antimicrobial activity of pelargonium roseum leaves essential oil that grown in southwest of iran were determined. the hydrodistilled volatile components were identified by gc/ms analysis. a total of 33 components have been identified in the oil, representing 99.38% of the total oil and citronellol (44.63%), citronellyl formate (14.22%), isomenthon (6.3...

objective(s):various species of genus trigonella are important from medical and culinary points of view. the essential oil of trigonella torbatejamensis ranjbar as an endemic plant in iran has not been studied previously. the essential oil of this plant was analyzed by different methods for identification of its components. materials and methods: the essential oil composition of aerial parts of...