Когда была открыта глюкоза?
Glucose was first isolated from raisins in 1747 by the German chemist Andreas Marggraf. Glucose was discovered in grapes by Johann Tobias Lowitz in 1792 and recognized as different from cane sugar (sucrose). Glucose is the term coined by Jean Baptiste Dumas in 1838, which has prevailed in the chemical literature. Friedrich August Kekulé proposed the term dextrose (from Latin dexter = right), because in aqueous solution of glucose, the plane of linearly polarized light is turned to the right. In contrast, D-fructose (a ketohexose) and L-glucose turn linearly polarized light to the left. The earlier notation according to the rotation of the plane of linearly polarized light ("d" and "l"-nomenclature) was later abandoned in favor of the D- and L-notation, which refers to the absolute configuration of the asymmetric center farthest from the carbonyl group, and in concordance with the configuration of D- or L-glyceraldehyde.
1747