4. Conclusion
This study demonstrated the potential of using canna starch
and its derivatives to improve the qualities of rice noodles. Crosslinked
canna starch can increase tensile strength and elongation,
while retrograded debranched canna starch can increase TDF content
and improve nutritional benefits in terms of increased butyric
acid production. In vitro experiments revealed that noodles substituted
with retrograded debranched canna starch exhibited a slow
fermentation rate; therefore, these noodles are also expected to
be slowly fermentable in vivo and will yield a certain amount of
SCFAs along the distal colon. Due to the high TDF content, acceptable
cooking qualities and textural properties, as well as good fermentability,
rice noodles substituted with 20% retrograded
debranched starch are recommended as an alternative food choice
for health-conscious consumers.