Zobrazeno 1 - 10
of 26
pro vyhledávání: '"W. H. Kalus"'
Publikováno v:
Environmental Health Perspectives
We examined t-butylhydroquinone (t-BHQ) and t-butylquinone (t-BuQ), two of the major microsomal metabolites of the synthetic antioxidant butylated hydroxyanisole (BHA), for their ability to react with the xenobiotic arylamines aniline and N-methylani
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f794d33832b2ebbf9d6178a2f9279eb7
http://europepmc.org/articles/PMC1567239
http://europepmc.org/articles/PMC1567239
Publikováno v:
Food Additives and Contaminants. 7:223-233
The reaction mixture and several products arising from the reaction of butylated hydroxyanisole (BHA) and nitrite in anaerobic aqueous acidic solution were separated and tested in the Salmonella mutagenicity test. Among the nine products separable by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb4f9cac40e1ca2acd82b0aa34d90f80
https://doi.org/10.1080/02652039009373886
https://doi.org/10.1080/02652039009373886
Autor:
W. H. Kalus
Publikováno v:
Fresenius' Zeitschrift f�r Analytische Chemie. 289:198-201
Die Radiotracertechnik mit 35SO2 als Indicator wurde zur Bestimmung von Schwefeldioxid in wasrigen Modell-Losungen und einigen Lebensmitteln nach der Destillationsmethode angewandt. Die Parameter, welche die analytischen Ergebnisse beeinflussen, werd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53f12dfd0fabae8f722b2b4d555f87d8
https://doi.org/10.1007/bf00440270
https://doi.org/10.1007/bf00440270
Publikováno v:
Chemosphere. 16:2479-2485
Some known reaction products of the two commonly used food additives, sulfite and nitrite, were examined for mutagenicity using the Salmonella/mammalian-microsome test. Potassium nitrosodisulfonate, potassium aminetrisulfonate and potassium hydroxyla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb32e6ccdf7cc80de1ca1c66c2033a2b
https://doi.org/10.1016/0045-6535(87)90306-7
https://doi.org/10.1016/0045-6535(87)90306-7
Autor:
W. G. Filby, W. H. Kalus
Publikováno v:
Zeitschrift für Naturforschung B. 31:1372-1375
The mass spectra of some aryl hydrazines under electron impact are reported. In every case studied fragmentation occurs via fission of the weak hydrazyl N—N bond and hydrogen migration. Metastable ion data is presented in support of a proposed mech
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7071eabef66c32b5e677b6b5686dd7d7
https://doi.org/10.1515/znb-1976-1016
https://doi.org/10.1515/znb-1976-1016
Autor:
W. H. Kalus, W. G. Filby
Publikováno v:
Experientia. 32:1366-1368
It is shown that the reaction between vitamin K3 and sodium sulphite under physiological conditions leads to the formation of free radical intermediates.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca0fa6ee703f02a1611cd1aceae8764d
https://doi.org/10.1007/bf01937377
https://doi.org/10.1007/bf01937377
Autor:
W. G. Filby, W. H. Kalus
Publikováno v:
Chemischer Informationsdienst. 7
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e062c0c11282cd3c4e9b605c9575bed7
https://doi.org/10.1002/chin.197623108
https://doi.org/10.1002/chin.197623108
Autor:
W. H. Kalus, W. G. Filby
Publikováno v:
Experientia. 36(2)
The participation of semiquinone free radicals during the reaction of ascorbic acid with acidified sodium nitrite has been demonstrated by ESR spectroscopy unambiguously for the first time. Scavenging of the nitrosating agent, reflected by the observ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b99f0ad68710eb008eec931224cdb188
https://pubmed.ncbi.nlm.nih.gov/6245907
https://pubmed.ncbi.nlm.nih.gov/6245907
Stopped flow ESR study of the action of carbohydrates on ascorbic acid oxidation in aqueous solution
Autor:
W H, Kalus, W G, Filby
Publikováno v:
International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition. 55(1)
The influence of added carbohydrate on the decay kinetics of the ascorbic acid free radical generated in deaerated aqueous solutions by the action of potassium ferricyanide on ascorbic acid has been studied. Addition of carbohydrate (less than or equ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::cd58a59a5f9897ea3596625e617d810e
https://pubmed.ncbi.nlm.nih.gov/2987149
https://pubmed.ncbi.nlm.nih.gov/2987149
Autor:
W H, Kalus, W G, Filby
Publikováno v:
International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition. 47(3)
The relative rate constants for the decay of ascorbate free radical in aqueous solutions in the presence of heavy metal ions, hydrogen peroxide and sulphite were measured the ESR-spectroscopy. The oxidation of ascorbic acid showed a strong pH depende
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::1a042e38b6cad7c50aafe731b44212a4
https://pubmed.ncbi.nlm.nih.gov/21144
https://pubmed.ncbi.nlm.nih.gov/21144