[Phytic phosphorus and phytase activity in cereal-based infant formulas]. / Fósforo fítico y actividad de fitasa en fórmulas infantiles basadas en cereales.
Arch Latinoam Nutr
; 62(4): 370-4, 2012 Dec.
Article
in Es
| MEDLINE
| ID: mdl-24020257
Phytic acid is an organic acid present in cereal grains. The phosphorus inside its molecule (PPhy) is not available because of its low solubility, though the bioavailability could be increased by the activity of phytase enzymes (PhyA). With the purpose of quantifying the PPhy and PhyA in supplements manufactured from cereals and intended for lactating infants, five formulas of wide distribution in local markets were selected and identified depending on the main vegetable ingredients as A (rice), T (wheat), ATS (rice, wheat and soy isolate), ATM (rice, wheat and maize) and ATMS (rice, wheat, maize and soy isolate). Five samples were taken from each formula, each one corresponded to a commercial brand (400 to 500 g), coming from different batches and before their expiration date. The crude protein ranged from 7.2 to 16.8%, with de highest value for ATS and the lowest for T and ATM (P < 0.01). Ether extract varied from 0.31 to 0.75%, while the calcium: phosphorus ratio from 1.6 for ATM, to 1.1 for the rest. The PPhy was 61.5% of the total phosphorus in T, with differences (P < 0.01) compared to the other formulas (39.9 +/- 6.8%). PhyA was only detected in ATS, T and ATM (152, 300 and 570 U/kg, respectively). The chemical composition complied with the manufacturer report, with a high content of PPhy and PhyA associated to the wheat presence in the formula.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Phosphorus
/
Phytic Acid
/
Edible Grain
/
6-Phytase
/
Infant Formula
Country/Region as subject:
America do sul
/
Venezuela
Language:
Es
Journal:
Arch Latinoam Nutr
Year:
2012
Document type:
Article
Affiliation country:
Venezuela
Country of publication:
Venezuela