Determination of galactose and galactocerebroside using a galactose oxidase column and electrochemical detector

Analytical Biochemistry
P W StoeckerA M Yacynych

Abstract

A method has been developed to measure galactose and galactocerebroside using galactose oxidase immobilized on a solid resin. Galactose oxidase converts galactose and galactocerebroside to their corresponding aldehydes and hydrogen peroxide, the latter being electroactive and measurable by electrochemical detection using DC amperometric detection. The minimal detection limits of galactose and galactocerebroside were 1 and 2 microM, respectively. The linear response to galactose and galactocerebroside was to at least 300 microM. About 100 samples can be measured per hour using flow injection analysis. The activity of sulfatidase (cerebroside-3-sulfate-3-sulfohydrolase), which converts sulfatide (sulfogalactocerebroside) to galactocerebroside, was measured, and its inhibition by O-phospho-L-tyrosine was determined.

References

Dec 1, 1975·Archives of Biochemistry and Biophysics·G D Lee, R L van Etten
Feb 9, 1979·Biochimica Et Biophysica Acta·A L FluhartyH Kihara
May 1, 1977·Analytical Chemistry·P J TaylorJ M Johnson
Jul 1, 1980·The Biochemical Journal·A L FluhartyH Kihara
Jan 1, 1995·Biosensors & Bioelectronics·P ManowitzA M Yacynych
May 1, 1994·Neurochemical Research·N S Radin
Jan 1, 1994·Biosensors & Bioelectronics·E R Reynolds, A M Yacynych
Mar 3, 1994·Biochimica Et Biophysica Acta·J P VosB M Gadella

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