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26 results on '"Heftmann E"'

1. Electrophoresis

Author

Everaerts, F.M., Mikkers, F.E.P., Verheggen, T.P.E.M., Vacik, J., Heftmann, E., and Chemical Engineering and Chemistry

Published
1983

2. Gas chromatography

Author

Cramers, C.A.M.G., McNair, H.M., Heftmann, E., and Chemical Engineering and Chemistry

Published
1983

3. High-pressure liquid chromatography of steroids.

Author

Heftmann E and Hunter IR

Subjects
Adrenal Cortex analysis, Alkaloids analysis, Androstanes analysis, Animals, Bile Acids and Salts analysis, Cardiac Glycosides analysis, Chromatography, High Pressure Liquid methods, Estrogens analysis, Pregnanes analysis, Sapogenins analysis, Sterols analysis, Vitamin D analysis, Steroids analysis
Abstract

After a brief discussion of the merits and limitations of high-pressure liquid chromatography (HPLC) relative to other chromatographic methods, special problems in the application to steroids are discussed. Publications on HPLC of steroids are then discussed under the headings of individual classes, arranged generally in the order of increasing polarity.

Published
1979
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5. High-pressure liquid chromatography of steroidal alkaloids.

Author

Hunter IR, Walden MK, Wagner JR, and Heftmann E

Subjects
Methods, Piperidines analysis, Solanaceous Alkaloids, Spirostans analysis, Tomatine analogs & derivatives, Veratrum Alkaloids analysis, Alkaloids analysis, Chromatography, High Pressure Liquid, Steroids analysis
Abstract

High-pressure liquid chromatography was used to separate the following steroidal alkaloids: tomatidine, solanidine, solasodine, rubijervine, veratramine and jervine. The method was used to prepare crystalline solanidine from a crude mixture of aglycones obtained from Solanum chacoense, and to separate radioactive solanidine from extracts of potato plants fed with [4-C]cholesterol.

Published
1976
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7. Thin-layer chromatography of corticosteroids.

Author

BENNETT RD and HEFTMANN E

Subjects
Adrenal Cortex Hormones, Aldosterone, Chromatography, Chromatography, Thin Layer, Cortisone, Desoxycorticosterone, Hydrocortisone, Hydroxyprogesterones, Pregnenolone, Progesterone
Published
1962
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20. Caffeine metabolism by Penicillium roqueforti.

Author

Schwimmer S, Kurtzman RH Jr, and Heftmann E

Subjects
Carbon Isotopes, Chromatography, Thin Layer, Dealkylation, Theobromine isolation & purification, Theophylline isolation & purification, Caffeine metabolism, Penicillium metabolism
Published
1971
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25. Biosynthesis of steviol.

Author

Ruddat M, Heftmann E, and Lang A

Subjects
Chromatography, Thin Layer, In Vitro Techniques, Acetates metabolism, Mevalonic Acid metabolism, Plants metabolism, Terpenes biosynthesis
Published
1965
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