FDSC 300 Lecture Notes - Lecture 14: United States Pharmacopeia, Solvent, Hydrolase
Document Summary
Definition: vitamins are defined as relatively low-molecular weight compounds which humans, and for that matter, any living organism that depends on organic matter as a source of nutrients, require small quantities for normal metabolism. Vitamin units usually expressed in units of mg or ug per tablet or food serving. Vitamins can also be expressed as international units, us pharmacopeia unit and % daily value. The iu is a unit of measurement for the amount of a substance, based on a measured biological activity or effect. It is used for vitamins, hormones, vaccines and similar biologically active substances. The precise definition of 1 iu differs from substance to substance. Extraction of vitamins: vitamin assays in most instances involve the extraction of a vitamin from its biological matrix prior to analysis. This generally includes one or several of the following treatments: heat, acid, alkali, solvent and enzymes (for extraction)
