Effect of dephytinization on bioavailability of iron, calcium and zinc from infant cereals assessed in the Caco-2 cell model

Table 2 Iron retention, transport and uptake from infant cereals by Caco-2 cells

	Infant cereal	Iron added (&mgr;g)	Solubility (%)	Retention (&mgr;g)	Retention (%)	Transport (&mgr;g)	Transport efficiency (%)	Uptake (&mgr;g)	Uptake efficiency (%)
- phytase	A	12.51	17.42 ± 6.1a	1 ± 0.1	7.99 ± 2.2b	1.59 ± 0.6	2.21 ± 1a	2.59 ± 0.8	3.6 ± 0.9b
	B	13.08	8.72 ± 2.7b	0.79 ± 0.4	6.04 ± 0.6b	0.21 ± 0	0.14 ± 0.03c	1 ± 0.2	0.66 ± 0.2d
	C	13.13	24.21 ± 1.9ª	2.19 ± 0.1	16.68 ± 3.8ª	1.09 ± 0.7	2.01 ± 0.8ª	3.28 ± 1.1	6.05 ± 2.2ª
	D	11.18	20.93 ± 4.8ª	0.78 ± 0.2	6.98 ± 0.8b	0.18 ± 0.04	0.33 ± 0.1b	0.96 ± 0.2	1.8 ± 0.3c
+ phytase	A	12.51	34.53 ± 8.61	2.52 ± 0.3	20.14 ± 3.91	2.18 ± 0.9	6.02 ± 1.31	4.7 ± 0.9	13 ± 2.51
	B	13.08	21.1 ± 1.81	2.1 ± 0.2	16.28 ± 2.11	2.49 ± 0.9	4.01 ± 0.81	4.62 ± 1.6	7.45 ± 3.91
	C	13.13	19.19 ± 31	2.41 ± 0.3	18.35 ± 3.4	1.66 ± 0.6	2.43 ± 0.6	4.0 ± 1.2	5.95 ± 1.1
	D	11.18	16.64 ± 6.2	1.65 ± 0.2	14.75 ± 1.31	0.99 ± 0.2	1.47 ± 0.31	2.64 ± 0.8	3.93 ± 0.71

A: Eight cereals honey; B: Multicereals; C: Rice cream; D: Gluten-free cereals. mean ± SD, n = 5. Different letter (a-d) denotes significant differences (P < 0.05) between commercial infant cereals (without phytase treatment) to assess the effect of different phytate content.

¹P vs the same infant cereal dephytinized or not.