Born Learning Academy continues to find teachable moments for young kids in everyday activities. INDEPENDENCE, Ky. â Taking a quick trip to the grocery store and measuring ingredients for a favorite recipe may seem like simple, run-of-the-mill tasks, but for parents with small children they can be teachable moments.
Piperonyl butoxide (PBO) is an organic compound used as a component of pesticide formulations. It is a waxy white solid. It is a synergist. That is, despite having no pesticidal activity of its own, it enhances the potency of certain pesticides such as carbamates, pyrethrins, pyrethroids, and rotenone. It is a semisynthetic derivative of safrole.
There are over 600 known carotenoids; they are split into two classes, xanthophylls (which contain oxygen) and carotenes (which are purely hydrocarbons, and contain no oxygen). All carotenoids are tetraterpenoids, meaning that they are produced from 8 isoprene molecules and contain 40 carbon atoms.In general, carotenoids absorb wavelengths ranging from 400-550 nanometers (violet to green light). Carotenoids with molecules containing oxygen, such as lutein and zeaxanthin, are known as xanthophylls. 2  The unoxygenated (oxygen free) carotenoids such as Î±-carotene, Î²-carotene, and lycopene, are known as carotenes.