Author(s)

Zhongqin Li, Ruizhang Guan, Hongwei Liu

Fisheries College of Jimei University; Engineering Research Center of Eel Modern Industrial Technology, Ministry of Education, Xiamen, China.

A new reversed-phase high performance liquid chromatography method was developed to quantitate the activity of xanthine oxidase involved in milk fat globule membrane with xanthine as the substrate and the separation of product (uric acid). The increment of uric acid in the reaction system was used to calculate the total activity of XO. The optimized assay conditions, linearity of detection, recovery of uric acid and chromatogram were developed in text, indicating this method is simple, rapid and efficient. It is an alternative potential method for the determination of the activity of XO in milk.

Xanthine Oxidase (XO); Enzyme Activity Assay; Reversed-Phase High Performance Liquid Chromatography (RP-HPLC)

Z. Li, R. Guan and H. Liu, "A Sensitive Reversed-Phase High-Performance Liquid Chromatography Method for the Quantitative Determination of Milk Xanthine Oxidase Activity," Open Journal of Medicinal Chemistry, Vol. 3 No. 1, 2013, pp. 26-30. doi: 10.4236/ojmc.2013.31004.