An analytical procedure to determine major sugars and organic acids,
including vitamin C, in fruits
was developed using a C18 Sep-Pak cleanup process and an
ion exclusion HPLC column. Dual UV
monitoring and refractive index were performed for detection. To
attain optimal separation and
quantitation, 0.0085N H2SO4 was used as
the mobile phase and the column temperature was
maintained at 23 °C. This procedure was compared to others for
the individual quantitation of
sugars, organic acids, and vitamin C. Recovery and reproducibility
of this analytical procedure
were quite acceptable for strawberry and four other common fruits,
allowing the analysis of all the
components using a single-injection HPLC analysis in <22
min.
Keywords: Simultaneous analysis; high-performance liquid chromatography;
sugars; organic acids;
vitamin C; strawberry; fruits
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