This work investigated the quality characteristics and antioxidant activities of
‘Sikhye’ containing 0, 25, 50, and 100% Jerusalem artichoke
extracts (JAE) instead of water. The highest moisture content of
‘Sikhye’ was 82.91-87.93% without JAE addition, which generally
decreased the moisture content. There were no statistically significant
differences in the crude protein and fat contents of ‘Sikhye’ as
functions of the added JAE content. In proportion to the added JAE content, the
sugar content, acidity and turbidity of ‘Sikhye’ increased, and
the pH generally decreased. In chromaticity determination, the lightness
decreased and redness and yellowness increased with increasing the level of JAE,
and the total polyphenol and flavonoid contents increased. The antioxidant
activities measured using DPPH and ABTS radical scavenging activities and
reducing powder were significantly higher than that of the control, and
proportionally increased as the amount of JAE increased. These results provide
basic data for the development of ‘Sikhye’ supplemented with
Jerusalem artichoke.