This study presented the significant positive impact of
the parboiling process on the nutritional (protein, ash and phenolic
compounds) retention and cooking time and hardness modification
of black and red rice genotypes, as well as the deleterious
effect of polishing the grains on the same quality parameters.
Moreover, the free phenolics were higher in both parboiled
polished grains compared to their polished counterparts,
strengthening the positive impact of parboiling process to nutritional
properties of pigmented rice.