Stamenković, J., Radojković, I., Đorđević, A., Jovanović, O., Petrović, G., Stojanović, G.: Optimization of HPLC method for the isolation of Hypericum perforatum L. methanol extract. Biologica Nyssana, 4 (12), December 2013: 81-85. St. John's Wort (Hypericum perforatum L.) is one of the most studied plant species in the family Hypericaceae. The aim of this study was the identification of the co...

BACKGROUND The rate of lead poisoning has decreased in recent years due to increased health control in industries that use this metal. However, it is still a public health problem worldwide. The use of various plants with chelating properties has been a topic of research today. In traditional medicine, it is said that Coriandrum sativum has chelating properties, but there is no scientific evide...

Formic acid is the toxic metabolite responsible for the retinal and optic nerve toxicity produced in methanol intoxication. Previous studies in our laboratory have documented formate-induced retinal dysfunction and histopathology in a rodent model of methanol intoxication. The present studies define the time and concentration dependence of formate-induced retinal toxicity in methanol-intoxicate...

Cyclic voltammetry is an efficient means of analyzing the catalytic reduction of H2O2 at immobilized horseradish peroxidase (HRP)-Eastman AQ 55 electrodes in the presence of 1,1'-ferrocenedimethanol as a one-electron reversible cosubstrate. This system was employed to study the kinetics of the reduction of compound II of HRP in a number of organic solvents. An electrocatalytic response was dete...

1383-5866/$ see front matter 2011 Elsevier B.V. A doi:10.1016/j.seppur.2011.12.020 ⇑ Corresponding author. Tel.: +351 253 604 424; fa E-mail addresses: [email protected], so (S.I. Mussatto). Methanol, ethanol, and acetone at four different concentrations (90%, 70%, 50%, and 30% v/v) were used for extraction of phytoestrogens (nordihydroguaiaretic acid (NDGA), kaempferol, and quercetin) from...

In the present study molluscicidal activity of methanol extract of stem bark of plant Euphorbia tirucalli (Family: Euphorbiaceae) against two freshwater harmful snails Lymnaea acuminata and Indoplanorbis exustus were evaluated in the laboratory as well as in the pond. Both snails are intermediate hosts of liver fluke, Fasciola hepatica and Fasciola gigantica, which causes endemic fascioliasis i...

For automotive applications, it is necessary to maximize the fuel conversion efficiency of a PEM direct-methanol fuel cell (DMFC) over the broadest possible dynamic range of power. The research reported here critically examines the efficiency of the DMFC stack when operated over a broad power range. This research establishes a basis for a control strategy that simultaneously: optimizes DMFC fue...

the occurrence of blindness after drinking some herbaceous distillates is created some anxieties in iran. in this study, the effectiveness of concentration of khalvash distillate was studied on the function of the new modified suggested chromotropic acid method for qualitative detection of methanol. for this purpose, three samples of khalvash distillate were purchased from vendors of rasht. acc...

echinophora platyloba d.c as a medicinal plant is used for preservation of foods and treatment of many diseases in different regions of iran. the present study was undertaken to determine the chemical composition and investigation of the antibacterial effects of essential oil as well as methanol extract from aerial part of echinophora platyloba d.c against s. aureus, l. monocytogenes, s. thyphi...

Objective: The present study was planned to explore phytoconstituents and hypoglycemic potential of the leaf extracts of Acanthus ilicifolius and Evolvulus emerginatus by invitro method. Methods: The aqueous, ethanol and methanol leaf extracts were prepared by soxhlation method. Qualitative phytochemical screening was done by using Horborne method. Methanol leaf extracts and standard drug acarb...