Tonsil® - Efficient purification of edible oils based on natural resources

What has a volcanic eruption to do with a juicy roast steak? The connection between volcanic ash and the golden yellow edible oil in the kitchen -- widely used for roasting, deep frying or for salads -- is not immediately apparent. What they have in common is the purifying effect of so-called bleaching earths based on the natural resource bentonite, one of these clay minerals which were able to form over the millennia under certain pressure and temperature conditions from deposits of volcanic ash in subterranean deposits. It is used to produce the highly active bleaching earth Tonsil® which gently removes all undesired accompanying substances and dyestuffs as well as impurities from edible oil whilst preserving the nutrients, thereby creating ideal preconditions for healthy consumption and a clear appearance.
http://www.clariant.com/corpnew/inter...