change in rice during soaking step of parboiling was due to the
combined mechanism of bran pigment diffusion and nonenzymatic
browning. There was no significant difference in the
colour change of LHRY and HHRY paddy from the same variety. As
in the prediction of water diffusion, the colour diffusion (hence the
total colour change) can also be predicted with Page model below
and above the gelatinisation temperature in all forms of rice grain.
Acknowledgements
Prakash Oli would like to acknowledge the scholarship from
Endeavour Scholarships and Fellowships, Australia. The authors
would like to thank SunRice Appraisal Laboratory (NSW, Australia)
for rice samples and Ms Margrit Martin (Yanco Agricultural Institute)
for providing the laboratory analysis on protein, gelatinisation
temperature and amylose content of the samples.