Phlorizin Phlorizin Phlorizin (also referred to as phloridzin; chemical name phloretin-2'-β--glucopyranoside) is a glucoside of phloretin, a dihydrochalcone, a family of bicyclic flavonoids, which in turn is a subgroup in the diverse phenylpropanoid synthesis pathway in plants. Phlorizin is found primarily in unripe "Malus" (apple), root bark of apple, trace amounts have been found in strawberry. In "Malus", it is most abundant in vegetative tissues (such as leaves and bark) and seeds. Closely related species, such as pear ("Pyrus communis"), cherry, and other fruit trees in the "Rosaceae" do not contain phloridzin. Phloridzin is a phytochemical that belongs to the class
Étienne-Louis Malus index between the surface and the interior of the glass). It was not until 1815 that Sir David Brewster was able to experiment with higher quality glasses and correctly formulate what is known as Brewster's law. This law was later explained theoretically by Augustin Fresnel, as a special case of his Fresnel equations. Malus is probably best remembered for Malus's law, giving the resultant intensity, when a polariser is placed in the path of an incident beam. His name is one of the 72 names inscribed on the Eiffel tower. Étienne-Louis Malus Étienne-Louis Malus (; ; 23 July 1775 –