The results of retrogradation properties are shown in Table 2.
Clearly, DH2 and retrogradation degree increased significantly
(P < 0.05) with the rising MS content, and the increasing rate of
retrogradation also increased till the MS content reached 5 g/100 g
and then it began to decrease. Retrogradation is an evitable procedure
to obtain the texture of starch-based products, and starches
are selected as ingredients for improving noodle texture based on
their retrogradation properties. Our results are in agreement with
Qazi et al. (2011) who found that MS had a higher capability of
retrogradation than RF. Actually, retrogradation is highly correlated
with amylose content and starch sources (Qazi et al., 2011). Thus,
the acute improvement of retrogradation degree with increasing
MS content was mainly attributed to the increase of amylose content.
The decline in the increasing retrogradation rate with addition
of 5 g/100 g or more MS implied that the change of amylose content
was less sensitive