Proximate composition
Table 1 summarises the basic statistical parameters of the proximate composition of the rice flours studied. The amylose content in the flours ranged from 1.2% to 3.7%, 14.7% to 18.6% and 22.7% to 30.4% for 27 genotypes of low amylose content, 47 genotypes of medium amylose content and five genotypes of high amylose content, respectively.
The amylose content in the flours of commercial varieties was within the range mentioned above. The amylose content
in the starches isolated from rice was found to be higher by 9.5–46% than the corresponding amylose content of their flours.
Wang . (2010) reported the amylose content between 18% and 31% for starches isolated from ten Chinese rice cultivars. Xie et al. (2008) observed an apparent amylose content of 1.2–2.0%,and 14.3–29.0% for nine waxy rice flours and ten non-waxy rice flours, respectively.