3. Results and discussion
3.1. Characterization of raw materials
3.1.1. Optical microscopy
The images of CWF (Fig. 1a) show the presence of intact starch granules
and non-uniform structures that are proteins and other nutrients in
the control wheat flour. Under polarized light, the birefringence of the
granules of the raw starch was observed. The images of EWF and PGS
(Fig. 1b and c, respectively), show that the starch of these ingredients
was gelatinized, since the granular structure was disrupted and no birefringence
was observed under polarized light. However, it is possible to
verify that some starch granules in EWF were less disrupted than other
granules of this same sample and then PGS granules.