complex behavioral sequence that allows it to arave at the source of the odorous plume. Studies on the effect of various neurotransmitters and neuromodulators have shown that odor perception and response periodicity is greatly influenced by several biogenic amines. Further studies on the effect of agonists (a chemical substance capable of combining with a nervous receptor and initiating a react...

Biogenic amines perform many kinds of important physiological functions in the central nervous system (CNS) of insects, acting as neuromodulators, neurotransmitters, and neurohormones. The five most abundant types of biogenic amines in invertebrates are dopamine, histamine, serotonin, tyramine, and octopamine (OA). However, in beetles, an important group of model and pest insects, the role of t...

Fifty sucuks (19 factory sucuks and 31 butcher’s sucuks) were collected from local markets and butchers. Chemical, microbiological and overall sensory qualities of sucuks were investigated. There was a great variation in the concentrations of biogenic amines and levels of residual nitrite in them. Aerobic plate, lactic acid bacteria, and mould and yeast counts of factory sucuks varied from 5.56...

At present, wine is generally produced using Saccharomyces yeast followed by Oenococus bacteria to complete malolactic fermentation. This method has some unsolved problems, such as the management of highly acidic musts and the production of potentially toxic products including biogenic amines and ethyl carbamate. Here we explore the potential of the fission yeast Schizosaccharomyces pombe to so...

Chromatographic system for simultaneous determination of levodopa, biogenic amines, and methylxanthines in food has been developed. Chromatographic column and precolumn with octadecylsilane phase and simultaneously fluorescence and DAD detectors have been used. Gradient elution with acetate buffer (pH=4.66) with acetonitrile has been applied. Examination included levodopa, norepinephrine, dopam...

GC-NICIMS has been employed in the analysis of biogenic amines and their metabolites in human urine and human, bovine and porcine aqueous and vitreous humour. Several new chemical derivatization procedures have been developed in order to analyse these compounds. Concentrations of octopamines and synephrines were determined in urine from treated and untreated hypertensive subjects and normotensi...

The presence of biogenic amines in cultured cells of mouse neuroblastoma C-1300 (clone NB-2a) was suggested by fluorescence-microscope histochemistry. Incubation in media containing L-[(14)C]tyrosine and L-[(14)C]tryptophan for 24 h, followed by high-voltage electrophoresis, radiochromatogram scanning, and scintillation counting, confirmed the presence of [(14)C]dopamine, [(14)C]norepinephrine,...

BACKGROUND Trace amines, including tyramine, octopamine, and synephrine, are closely related to classic biogenic amines. They have been hypothesized to promote migraines and other types of primary headaches, but there is no direct evidence supporting this hypothesis. METHODS Using a multichannel electrochemical high-performance liquid chromatography system, the authors evaluated whether chang...