Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Petra W. Snijman"'
Autor:
Wentzel C. A. Gelderblom, Liana van der Westhuizen, Gordon S. Shephard, Robert Vleggaar, Petra W. Snijman, Kenny Tenza, Vikash Sewram
Publikováno v:
Journal of Agricultural and Food Chemistry. 55:4388-4394
1 H and 13 C NMR spectroscopy of both fumonisin B 3 and B 4 , as well as high-performance liquid chromatography (HPLC) analysis of samples of fumonisin B 3 used as standards, showed in each case the presence of two stereoisomers, which could not be s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6acc6f4cbe2c61c5da5ef211da149d6
https://doi.org/10.1021/jf070061h
https://doi.org/10.1021/jf070061h
Autor:
Jeanine L. Marnewick, Marena Manley, ES Richards, Elizabeth Joubert, Wentzel C. A. Gelderblom, Petra W. Snijman, JD Van der Merwe
Publikováno v:
Mutation Research/Genetic Toxicology and Environmental Mutagenesis. 611:42-53
Antimutagenic activity of aqueous extracts of the South African herbal teas, Aspalathus linearis (rooibos) and Cyclopia spp. (honeybush) was compared with that of Camellia sinensis (black, oolong and green) teas in the Salmonella mutagenicity assay u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d5c501257ad531b03c76807b41538ae
https://doi.org/10.1016/j.mrgentox.2006.06.030
https://doi.org/10.1016/j.mrgentox.2006.06.030
Publikováno v:
Synthetic Communications. 23:577-584
Convenient syntheses for 1,5-dimethoxy-4-naphthol and 2-allyl-5-methoxy-1,4-naphthoquinone have been developed. A key step in the formation of the title compounds involved methylation or allylation of an intermediate Diels-Alder adduct.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fcd2cab8f212c245ce576bb192a1efd
https://doi.org/10.1080/00397919308009815
https://doi.org/10.1080/00397919308009815
Publikováno v:
ChemInform. 26
Comparative Claisen rearrangements of 4-hydroxy - (7) and 4-acetoxy-1-allyloxy-5,8-ethano-5,8-dihydro-5-methoxynaphthalene (1) leading after chemoselective methylation to 4-acetoxy-2-allyl-1,5-dimethoxy-naphthalene (9) were investigated. Lewis acid m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a921607bbbd740903811cb959d33437
https://doi.org/10.1002/chin.199519060
https://doi.org/10.1002/chin.199519060
Autor:
Ivan R. Green, Petra W. Snijman, Xing-Cong Li, Daneel Ferreira, Elizabeth Joubert, Wentzel C. A. Gelderblom, Yuanqing Ding
Publikováno v:
Journal of agricultural and food chemistry. 57(15)
The antioxidant activity of rooibos flavonoids, including the dihydrochalcones aspalathin and nothofagin and their corresponding flavone glycosides, was evaluated using the ABTS radical cation, metal chelating, and Fe(II)-induced microsomal lipid per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0571b44b6624c48d9dbe8ca2cee7721
https://pubmed.ncbi.nlm.nih.gov/19722573
https://pubmed.ncbi.nlm.nih.gov/19722573
Autor:
Elizabeth Joubert, Wentzel C. A. Gelderblom, Petra W. Snijman, Ivan R. Green, Sonja Swanevelder
Publikováno v:
Mutation research. 631(2)
The antimutagenic properties of the most prevalent flavonoids in rooibos (Aspalathus linearis) were compared in the Salmonella typhimurium mutagenicity assay using tester strains TA98 and TA100 with, respectively, 2-acetamido-fluorene (2-AAF) and afl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ee743fe94147fd31859db91696b2d70
https://pubmed.ncbi.nlm.nih.gov/17537670
https://pubmed.ncbi.nlm.nih.gov/17537670
Autor:
Sonja Swanevelder, Wentzel C. A. Gelderblom, W. F. O. Marasas, Petra W. Snijman, Stefan Abel, S. Lebepe-Mazur, N.P.J. Kriek
Publikováno v:
Toxicology. 161(1-2)
The toxicity of low dietary levels of fumonisin B1 (FB1), i.e. 1, 10 and 25 mg FB1:kg diet, were monitored in rats over a period of 24 months. No effects on the body weight gain and feed intake profiles were noticed, while the relative liver weight w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c12da9192e25f07642e79f5d552aa533
https://pubmed.ncbi.nlm.nih.gov/11295254
https://pubmed.ncbi.nlm.nih.gov/11295254
Autor:
Wentzel C. A. Gelderblom, Jurgen V. Seier, Petra W. Snijman, Dirk J. Van Schalkwyk, Gordon S. Shephard, Walter F. O. Marasas
Publikováno v:
Environmental Health Perspectives. 109:267
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cca57524300f5f06b04ea723d775cda1
https://doi.org/10.2307/3435018
https://doi.org/10.2307/3435018