3. RESULTS AND DISCUSSION
Figure 1 shows the WAXD analysis results for rice flours
A and B. The peaks at 2θ = 15, 17, 18, 23° observed for rice
flour B were those of starch crystal.9,10) These crystalline
peaks were not observed for rice flour A. It is known that the
observed peaks at 2q = 13, 20° for rice flour A originates from
an amylose-lipid complex.10) These results show that rice flour
B has a crystalline structure. Therefore, we call rice flour B as
the crystalline rice flour. Molecular structure of rice flour A is
of an amorphous state.
Cross sectional images of Fig. 2 for fermented batter were
analyzed by using the method of subsection 2.3 to provide
relation between void fraction and flour A content of Fig. 3.
The void fraction percentages are noted in the photos of Fig. 2.
The void fraction for crystalline rice flour B100 was as little as