Nutritional properties of green gram germinated in mineral fortified soak water: II. Effect of cooking on total and bioaccessible nutrients and bioactive components
2017
Oghbaei, Morteza | Prakash, Jamuna
The effect of pressure and microwave cooking on total and bioaccessible nutrients and bioactive components in whole and dehulled green gram (GG) germinated in mineral fortified soak water was studied. Whole GG was soaked in water fortified with iron (100 or 200 mg/100 ml) or zinc (50 or 100 mg/100 ml), germinated, cooked by two methods and analyzed. Results showed that method of cooking did not affect the nutrient composition of whole or dehulled grains, however, phytic acid and dietary fiber were higher in microwave cooked samples. Minor differences were noted in total and percent available nutrients in differently cooked samples, significance being observed only for starch, protein and zinc in few samples. Significant differences were observed among variations, wherein the mineral fortified samples had a higher level of bioaccessibility compared to non-fortified samples. Cooking reduced the content of bioactive components in germinated GG, though bioaccessibility was higher. Comparison between raw and cooked grains showed that starch digestibility increased on cooking, though protein digestibility was not affected significantly. Bioactive components were also lower in cooked samples in comparison to the raw counterparts. In conclusion, the cooking methods did not affect the nutrient composition of green gram germinated in mineral fortified soak water, though available nutrients were higher in cooked legumes.
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