Characterization of Calcium Compounds in Opuntia ficus indica as a Source of Calcium for Human Diet

Table 1

Total calcium, oxalate, calcium carbonate content, and molar ratio oxalate : calcium in Opuntia ficus indica samples (cladodes, soluble, and insoluble dietary fiber).

Samples	Total calcium content; (mg/g); dry matter	Calcium; oxalate content; (mg/g); dry matter	Oxalate content; (mg/g); dry matter	Calcium carbonate content; (mg/g); dry matter	Molar ratio; oxalate : calcium
Cladodes	32.33 ± 2.90	6.71 ± 0.80	8.31 ± 0.80	70.81 ± 3.40	0.12
Soluble dietary fiber	18.99 ± 1.30	0.27 ± 0.20	1.25 ± 0.20	49.67 ± 1.87	0.03
Insoluble dietary fiber	13.08 ± 1.10	5.39 ± 0.17	6.61 ± 0.17	21.95 ± 2.17	0.23

Values ± SD followed by the same letter are not significantly different ().