Effect of maturity on macromineral content of selected leafy vegetables.

Macro mineral contents were estimated in commonly consumed green leafy vegetables in India, namely; Koyyathotakura and Peddathotakura (varieties of Amaranthus species); Erragogu and Tellagogu (variety of Hibiscus species); Gangabayalakura (Portulaca olereceo) and Palak (Spineces olerecea) at three different stages of maturity. Varietal differences were also observed. The results of the study showed that as the plant matured from stage I (15 days) to stage II (30 days) calcium and magnesium content increased. In contrast, phosphorus content decreased as the plant matured. Varietal differences were also observed at different stages of maturity. The results also indicated that the consumption of green leafy vegetables at stage I (15 days) and stage II (30 days) potentially provide the greatest amount of minerals.