Topic
Thin-layer chromatography
About: Thin-layer chromatography is a research topic. Over the lifetime, 7494 publications have been published within this topic receiving 124179 citations. The topic is also known as: TLC.
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TL;DR: In this article, a carbon adsorbent prepared by reduction of poly(tetrafluoroethylene) with alkali-metal amalgams is used as a mechanically stable packing for high-performance liquid chromatography.
29 citations
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29 citations
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TL;DR: Leaves of Inula viscosa have been used in medicine from ancient times and produce, as do its leaf cells, numerous polar compounds that could be of pharmaceutical interest.
29 citations
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TL;DR: It is suggested that retinal-oxidizing enzyme is a metalloprotein which requires sulfhydryl groups for maximal enzymic activity.
29 citations
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TL;DR: A thin layer chromatographic system including densitometry has been developed for determining cyclopiazonic acid in peanuts and corn using methanol-chloroform and derivatization with dimethylaminobenzaldehyde-HCl spray.
Abstract: A thin layer chromatographic system including densitometry has been developed for determining cyclopiazonic acid in peanuts and corn. Samples are extracted with methanol-chloroform (20 + 80); the extract is stripped of most interferences by partitioning with aqueous sodium bicarbonate followed by acidification and repartitioning with chloroform. After thin layer chromatography and derivatization with dimethylaminobenzaldehyde-HCl spray, the toxin is quantitated by reflection densitometry at 540 nm. The recovery of cyclopiazonic acid averages 90% for peanuts and 85% for corn. The absolute detection limit is 25 ng per spot which translates to a detection limit of 125 micrograms/kg for a 50 g sample.
29 citations