نتایج جستجو برای: biogenic amines

تعداد نتایج: 26418  

2013
Seyed Mehdi Razavi Rohani Javad Aliakbarlu Ali Ehsani Hassan Hassanzadazar

Biogenic amines (BA) are nitrogenous compounds that possess biological activity. The source of production is the microbial decarboxylation of amino acids. This compounds are found in various types of cheese. The aim of this work was to evaluate the BA content of some traditional cheeses in West Azerbaijan province Iran. For this purpose, 70 samples of Koopeh, 10 samples of Lighvan and 5 samples...

2013
Hirofumi Nishikawa Tatsuya Tabata Seiichi Kitani

Biogenic amines are known to have various biological functions such as not only neurotransmitter and cell proliferation but also food poisoning. Bacterially-decomposed amines such as histamine, agmatine, putrescine, cadaverine, spermidine and spermine cause allergic symptoms. We developed simple method for measurement of polyamine as indicator of food decomposition with a fluorometer by using 4...

Journal: :Investigative ophthalmology & visual science 1977
M M Rodrigues K Imai J A Shields A Laties

Clinical and histologic studies were performed on 25 patients with malignant melanomas of the ciliary body and choroid. Portions of fresh tumor were quick frozen and processed by the histofluorometric technique to demonstrate the presence of biogenic amines. Separate portions of each tumor were fixed and processed for routine light microscopy. Specific fluorescence was visible in 21 of 23 pigme...

2016
Begoña Redruello Victor Ladero Beatriz del Rio María Fernández M. Cruz Martín Miguel A. Alvarez

A novel chromatographic method for the simultaneous analysis of nine biogenic amines, 21 amino acids and ammonium ions in beer has been recently described in "A UHPLC method for the simultaneous analysis of biogenic amines, amino acids and ammonium ions in beer" (Redruello et al., 2017) [1]. The present article provides recovery data of the 31 analytes after spiking four different beers with fi...

Journal: :Meat science 2014
Eveline De Mey Katrijn De Klerck Hannelore De Maere Lore Dewulf Guy Derdelinckx Marie-Christine Peeters Ilse Fraeye Yvan Vander Heyden Hubert Paelinck

Regarding food borne intoxications, the accumulation of biogenic amines must be avoided in all kinds of food products. Moreover, biogenic amines can function as precursors for the formation of carcinogenic N-nitrosamines when nitrite is present. To estimate the food safety of the dry fermented sausages available on the Belgian market, a screening of the residual sodium nitrite and nitrate conte...

Journal: :International journal of food microbiology 2007
José María Landete Blanca de Las Rivas Angela Marcobal Rosario Muñoz

Biogenic amines are low molecular weight organic bases that can be detected in raw and processed foods. Several toxicological problems resulting from the ingestion of food containing biogenic amines have been described. Biogenic amines are mainly produced by the decarboxylation of certain amino acids by microbial action. Since the ability of microorganisms to decarboxylate amino acid is highly ...

Journal: :Molecular pharmacology 1998
R Dajani A M Hood M W Coughtrie

Sulfation, catalyzed by members of the sulfotransferase (SULT) superfamily, exerts considerable influence over the biological activity of numerous endogenous and xenobiotic chemicals. In humans, catecholamines such as dopamine are extensively sulfated, and a SULT isoform (SULT1A3 or the monoamine-sulfating form of phenolsulfotransferase) has evolved with considerable selectivity for dopamine an...

Journal: :Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes 2006
P Herbert M J Cabrita N Ratola O Laureano A Alves

The concentration of biogenic amines and free amino acids was studied in 102 Portuguese wines and 18 musts from Alentejo demarcated (D.O.C.) regions. Most wines were commercial, except for 38 monovarietals obtained by micro vinification. Musts from the varieties used to produce the latter wines were also studied. Both biogenic amines and free amino acids were analyzed by HPLC using fluorescence...

Journal: :Archives of insect biochemistry and physiology 2001
W Blenau A Baumann

In the central nervous system (CNS) of both vertebrates and invertebrates, biogenic amines are important neuroactive molecules. Physiologically, they can act as neurotransmitters, neuromodulators, or neurohormones. Biogenic amines control and regulate various vital functions including circadian rhythms, endocrine secretion, cardiovascular control, emotions, as well as learning and memory. In in...

Journal: :Journal of chromatography. A 2006
Frantisek Kvasnicka Michal Voldrich

A capillary zone electrophoresis (CZE) method with conductometric detection of biogenic amines (cadaverine, putrescine, agmatine, histamine, tryptamine and tyramine) is described. The optimised background electrolyte was the following: 15 mM histidine + 5 mM adipic acid + 1.5 mM sulphuric acid + 0.1 mM ethylenediaminotetraacetic acid + 0.1% hydroxyethylcellulose + 50% methanol. A clear separati...

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