Results 131 to 140 of about 931 (184)
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Semicarbazide Formation in Flour and Bread
Journal of Agricultural and Food Chemistry, 2008Azodicarbonamide, an approved food additive, is commonly used as a flour additive and dough conditioner in the United States and Canada. A number of researchers have clearly established a link between the use of azodicarbonamide and semicarbazide contamination in commercial bread products.
Gregory O, Noonan +2 more
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Semicarbazide in Canadian bakery products
Food Additives and Contaminants, 2006Levels of semicarbazide were determined by liquid chromatography-tandem mass spectrometry using isotope dilution ((13)C(15)N(2)-semicarbazide) methodology, and they were measured, after hydrolysis in 0.125 M hydrochloric acid and derivatization with 2-nitrobenzaldehyde, as a sum of free and bound semicarbazide.
A, Becalski +3 more
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The embryotoxic and osteolathyrogenic effects of semicarbazide
Toxicology, 1985The osteolathyrogenic agent semicarbazide was assayed for its toxicity and teratogenicity using early embryos of the frog Xenopus laevis. The 96-h LC50 is 1504.20 mg/l while the 96-h EC50 is 76.28 mg/l. Embryo length is altered prior to the onset of other effects indicated by a reduction in stage of development.
T W, Schultz, J N, Dumont, R G, Epler
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Applied Physics A Solids and Surfaces, 1992
Semicarbazide hydrochloride (SEM.HCl) was reported to be a prototype of another possible family of ferroelectrics [Appl. Phys. Lett. 20, 49 (1972)]. The present dielectric, resistivity, thermal and infrared absorption studies carried out on SEM.HCl and SEM.HBr do not confirm this suggestion.
Srinivasan, MR, Bhat, HL, Narayanan, PS
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Semicarbazide hydrochloride (SEM.HCl) was reported to be a prototype of another possible family of ferroelectrics [Appl. Phys. Lett. 20, 49 (1972)]. The present dielectric, resistivity, thermal and infrared absorption studies carried out on SEM.HCl and SEM.HBr do not confirm this suggestion.
Srinivasan, MR, Bhat, HL, Narayanan, PS
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Potentiation of the Action of Histamine by Semicarbazide
Nature, 1951ZELLER1 has shown that semicarbazide inhibits histaminase. We have found that this substance, added to Tyrode solution, potentiates the action of histamine on the guinea pig's ileum. The lowest concentration at which semicarbazide clearly potentiates histamine is of the order of 10−9.
J L, MONGAR, H O, SCHILD
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Recueil des Travaux Chimiques des Pays-Bas, 1943
AbstractSemicarbazide is the common but incorrect name for carbamic acid hydrazide: magnified imageThe atom are numbered as indicated.Semicarbazide reacts readily with aldehydes and ketones, and this reaction is often used to separate those compounds from mixtures or to identify them.
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AbstractSemicarbazide is the common but incorrect name for carbamic acid hydrazide: magnified imageThe atom are numbered as indicated.Semicarbazide reacts readily with aldehydes and ketones, and this reaction is often used to separate those compounds from mixtures or to identify them.
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Komplexverbindungen der Semicarbazide
Zeitschrift für anorganische und allgemeine Chemie, 1936AbstractDie Semicarbazide bilden Komplexverbindungen, in welchen sie zwei Koordinationsstellen besetzen. Das Metall ist an das Sauerstoffatom und die Hydrazingruppe gebunden. Von Nickel wurden außer Verbindungen von den Typen [NiSem2] und [NiSem3]X3 auch rote, innerkomplexe Verbindungen erhalten, welche sich von dem Semicarbazid durch Ersatz eines ...
K. A. Jensen, E. Rancke‐Madsen
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Food Additives and Contaminants, 2004
Nitrofuran antibiotics were previously used in animal healthcare but are now prohibited. Semicarbazide is a breakdown product of 5-nitrofurazone and protein-bound semicarbazide is used as a marker residue for the illegal use of 5-nitrofurazone. However, the presence of the prohibited semicarbazide has been reported in some food items of animal origin ...
L, Saari, K, Peltonen
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Nitrofuran antibiotics were previously used in animal healthcare but are now prohibited. Semicarbazide is a breakdown product of 5-nitrofurazone and protein-bound semicarbazide is used as a marker residue for the illegal use of 5-nitrofurazone. However, the presence of the prohibited semicarbazide has been reported in some food items of animal origin ...
L, Saari, K, Peltonen
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Menthone Semicarbazides and Thiosemicarbazides as Anticonvulsant Agents
Medicinal Chemistry, 2010A series of novel (+/-) 3-menthone semi carbazides (1-7) and thiosemicarbazides synthesized using an appropriate synthetic route and characterized by thin layer chromatography and spectral analysis. The anticonvulsant activity of synthesized compounds was established after intraperitoneal administration in three seizure models in mice which include ...
Jainendra, Jain +3 more
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