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Kumosani T.A.,King Abdulaziz University | Moselhy S.S.,King Abdulaziz University | Asseri A.M.,Criminal Evidence | Asseri A.H.,King Abdulaziz University
Toxicology and Industrial Health | Year: 2013

Polycyclic aromatic hydrocarbons (PCAHs), particularly those with a high molecular weight, have been classified as probable carcinogens to humans. The aim of the present study is to determine the levels of PCAHs in samples of meat, fish, chicken, fried potato, and toasted bread, which will be thermally processed using conventional and microwave ovens. Different samples will be collected and analyzed for five PCAHs including pyrene, benzo(a)anthracene, benzo(e)pyrene, benzoflouroanthene, and benzo(a)pyrene. The analytical method involves saponification with methanolic potassium hydroxide, extraction with cyclohexane, and determination by high-performance liquid chromatography. The obtained results showed that there is a variation in the detected PCAHs in different foodstuffs. Fried potato processed by conventional oven or microwave oven showed none of the selected studied PCAHs. It was found that, chicken showed higher content levels of total PCAHs than the meat and fish. Data are the highest mean concentrations of fluoranthene and benzo(a)pyrene but within low limit. The obtained results were compared with international permissible levels to avoid pollution, which may cause hazardous effects on individual and society. © The Author(s) 2012. Source


El-Hiti G.A.,King Saud University | Smith K.,University of Cardiff | Hegazy A.S.,University of Cardiff | Ajarim M.D.,Criminal Evidence | Kariuki B.M.,University of Cardiff
Acta Crystallographica Section E: Crystallographic Communications | Year: 2015

In the title compound, C12H14N2S, the cyclohexane ring adopts a chair conformation with the exocyclic C - C bond in an equatorial orientation. The mean plane through the cyclohexane ring (all atoms) is twisted from the thiazolopyridine ring system (r.m.s. deviation = 0.013 Å) by 39.57 (6)°. In the crystal, molecules form (100) sheets, although there are no specific directional interactions between them. The crystal stucture was refined as a two-component perfect twin. Source


El-Hiti G.A.,King Saud University | Smith K.,University of Cardiff | Hegazy A.S.,University of Cardiff | Ajarim M.D.,Criminal Evidence | Kariuki B.M.,University of Cardiff
Acta Crystallographica Section E: Crystallographic Communications | Year: 2015

In the title compound, C12H7N3O2S, the dihedral angle between the planes of the thiazolopyridine ring system (r.m.s. deviation = 0.005 Å) and the benzene ring is 3.94 (6)°. The nitro group is rotated by 7.6 (2)° from its attached ring. In the crystal, extensive aromatic π-π stacking [shortest centroid-centroid separation = 3.5295 (9) Å] links the molecules into (001) sheets. Source


El-Hiti G.A.,King Saud University | Smith K.,University of Cardiff | Hegazy A.S.,University of Cardiff | Ajarim M.D.,Criminal Evidence | Kariuki B.M.,University of Cardiff
Acta Crystallographica Section E: Structure Reports Online | Year: 2014

In the molecule of the title compound, C17H16N2OS, the almost planar methylsulfanylquinazoline group [the methyl C atom deviates by 0.032(2)Å from the plane through the ring system] forms an interplanar angle of 76.26(4)° with the plane of the phenyl group. An intramolecular O-H⋯N hydrogen bond is present between the quinazoline and hydroxy groups. In the crystal, molecules are stacked along the b-axis direction. Source


El-Hiti G.A.,King Saud University | Smith K.,University of Cardiff | Hegazy A.S.,University of Cardiff | Baashen M.,Criminal Evidence | Kariuki B.M.,University of Cardiff
Acta Crystallographica Section E: Structure Reports Online | Year: 2014

In the title compound, C17H27N3OS2, the amide group is approximately coplanar with the pyridine ring [dihedral angle = 1.6(1)°], whereas the dithiocarbamate group is nearly perpendicular to the pyridine ring [dihedral angle = 76.7(1)°]. In the crystal, pairs of weak C-H⋯O hydrogen bonds link the molecules into inversion dimers. Source

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