Conclusions
Thermal processing with F0 of 0.13 to 0.75 min resulted in decreasing degree of polymerization
(DPn) of acidified rice noodles and changes in texture and color. The decrease in DPn values depended
on rice varieties, heating profiles, and the interaction between rice varieties and thermal processing
profiles. After any of heat treatments, all noodle samples were torn easily, including the ones whose the
decrease DPn was not significant. Also, there was no interaction between % decrease of DPn of the
noodles and noodle hardness. Not only heating temperature had effects on noodle texture, but also
heating profiles had an important role on the texture properties of the products. The color of all acidified
noodles showed higher hue of blue, except for RD-7.