Synthetic phylloquinone was resolved into cis and trans isomers by thin-layer chromatography. The two isomers had identical ultraviolet spectra characteristic of vitamin K$_{1}$ and were ...

A palladium-based catalyst on diatomite — a siliceous powder derived from the remains of fossilized algae — could help lower levels of unhealthy ‘trans fats’ in hydrogenated oils like those in ...