Analysis of α-Lipoic Acid in Dietary Supplement

Lipoic acid, also referred to as thioctic acid, exists as (+)-α-lipoic acid in the natural world. In the body, it acts as a coenzyme for various enzymes, in particular, it is receiving attention for its activity as a coenzyme for enzymes that exist in mitochondria. Moreover, in recent years, it has found extensive use as a dietary supplement. This Application News introduces an example of analysis of α-lipoic acid in a food supplement product using the Shimadzu SPD-M20A Photodiode Array Detector