BIO ACCESSIBILITY OF MINERALS FROM SELECTED SMALL MILLETS
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Date
2018-09-03
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University of Agricultural Sciences, Bengaluru
Abstract
Millets are stable food for majority of the population around the world. Though
millets are nutritionally superior to other staple crops. The presence of antinutrirents in
them makes micronutrients to become less bioavaiable to the body. Hence the study was
undertaken to assess the bio accessibility of minerals from selected small millets along
with rice and wheat. Physico-chemical, micronutrients, antinutrients and bioaccessibility
of micronutrients among the millets were analysed by standard procedure. Physical
characteristics thousand seed weight, seed volume, hydration capacity, bulk density and
specific gravity ranged from 1.70 to 4.60g, 2.28 to 4.40 ml, 0.26 to 1.1g, 0.62 to 1.55g/ml
and 0.64 to 1.88 respectively. The moisture content ranged from 8.0 to 10.1%, protein 6.3
to 12.3 g, fat 0.9 to 4.4 g, crude fibre 2.3 to 9.9 g and carbohydrate 67 to 76.3 g/100g and
energy 330 to 362 Kcal/100g respectively. Minerals namely iron, zinc and calcium
ranged from 2.91 to 5.83 mg, 2.68 to 5.32 mg and 22 to 301.67 mg/100g respectively.
Phytic acid and tannin content ranged from 765.13 to 1318.85 mg/100g and 90.92 to
218.46 TAE/100g respectively. Bioaccessibility of iron among small millets ranged from
7.46 to 15.57 and that of rice and wheat was 16.43 and 10.53 percent respectively.
Bioaccessible zinc and calcium among millets ranged from 6.73 to 16.83 and 8.04 to
31.54 percent. Significant negative correlation was observed for phytic acid with
bioaccessible iron. Presences of different amount of minerals and antinutrients have
influence on bio accessibility of particular minerals in grain.
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