Assay of $\beta$-Galactosidase Using High Performance Liquid Chromatography
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1992, v.5 no.4, pp.465-469
Shin, Myung Gon
Chang, Pahn Shick
Min, Bong Kee
Kim, Sun Chang
Shin,
M. G., Chang,
P. S., Min,
B. K., &
Kim,
S.
C.
(1992). Assay of <TEX>$\beta$</TEX>-Galactosidase Using High Performance Liquid Chromatography. , 5(4), 465-469.
Abstract
An analytical procedure is presented for the quantitative determination of lactose, glucose, and galactose in the hydrolyzate of lactose by ${\beta}$-galactosidase with high-performance liquid chromatography. An Aminex HPX-87C column at $85^{\circ}C$ and refractive index detector were used to resolve lactose, glucose, and galactose in only 12 minutes with distilled and deionized water as a mobile phase. The validity of high-performance liquid chromatography as a method for the assay of ${\beta}$-galactosidase was supported by recovery experiments and comparision of results with those by ONPG method, a spectrophotometric assay. The procedure was appropriate for determination of sugars in the enzyme reaction mixture and could by applied to analysis of ${\beta}$-galactosidase activity.
- keywords
-
<TEX>${\beta}$</TEX>-Galactosidase,
HPLC,
ONPG,
quantitative determination