... assigned an adaptive function in nonhuman primates and various other organisms. One hypothesis submits that clay-rich soil adsorbs intestinal insults, namely plant metabolites or diarrhoea-causing enterotoxins. Here we test the capacity of kaolin, a commonly ingested clay, to adsorb quinine (an alkaloid...

... of this simple heterocycle. Other phasmids that possess defensive glands secrete substances unrelated to quinoline. Compounds characterized so far from phasmids are all cyclopentanoid monoterpenes (e.g. anisomorphal, nepetalactone), including monoterpene alkaloids (e.g. actinidine) ( Meinwald et al . 1962...