ARS | Publication request: DISTRIBUTION OF PHYTIC ACID IN GRAIN COMPONENTS OF LOW PHYTIC ACID RICE MUTANT LPAL

Submitted to: Rice Technical Working Group Meeting Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: February 24, 2002
Publication Date: N/A

Technical Abstract: Phytic acid, a phosphorus containing compound, is known to bind minerals such as iron, calcium, and zinc in slightly acidic conditions. Coupled with its characteristic of being indigestible, this compound, which is commonly found in grains such as rice, reduces the availability of minerals when consumed. A Kaybonnet low phytic acid (lpa1) mutant and its parent, Kaybonnet, were subjected to different degrees of milling. Each milled sample was examined for its phytic acid content. The total phytic acid concentration in the brown rice of lpa1 was 48.6% lower than that of the parent. Even though some phytic acid appears to be present in the endosperm, 64% of the phytic acid is removed at the 10% milling level. The development of the above low phytic acid rice line would be of significant nutritional concern to a large portion of the world's population where mineral deficiency is common.