An oxidase selected from the group consisting of glycerol-3-phosphate oxidase, choline oxidase and glucose oxidase can be stabilized by adding thereto an acidic amino acid or a salt thereof. The resulting stabilized composition can be used for quantitatively determining the content of glycerol-3-phosphate,...http://www.google.co.uk/patents/US4543326?utm_source=gb-gplus-sharePatent US4543326 - Stabilization of oxidase
