A study on water absorption characteristics of the selected cereal grains was conducted. It was found that well dried maize, sorghum and millet grains take about 96, 48 and 24 h, respectively, to reach their water absorption capacities (water absorption saturations). Millet had the highest rate of water absorption as well as the total water absorbed. The rate of water absorption in sorghum was higher than in maize but maize grains imbibed more water than sorghum. Rupture stress of the grains and its variation with moisture content was also investigated. The rupture stress of the grains was seen to decrease with increase in moisture content except for maize which showed a rapid rise only at the onset of the increase in moisture content.
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Ituen et al. (1986) studied this question.