I found an article about pigs being supplemented with phytase and came to the conclusion that phytase from white flour could counterbalance the phytic acid in nuts making nuts less harmfull?
so would that mean if you ate white bread before eating nuts or beans that the phytse in white bread would be enough to break down the phytic acid?
or would that mean eating a white bread nut sandwitch would make nuts phytic acid free?
asked byleanne_6 (15)
Get FREE instant access to our Paleo For Beginners Guide & 15 FREE Recipes!
on July 03, 2013
at 02:45 PM
The important thing to consider is that phytase is an enzyme and thus has specific conditions under which it will actually break down phytic acid. A full write-up on phytase can be found here:http://www.extension.purdue.edu/extmedia/as/as-560-w.pdf but the salient points are that phytase from plants (as opposed to microbial phytase) only activates in temperatures of 113 to 140 degrees fahrenheit and that phytase (like all enzymes) is degraded by excessively high heat (like the baking process of bread or even sometimes the grinding process for flour) and is no longer effective after that degredation. As such, bread is NOT a source of phytase because the baking process essentially destroys the phytase. Furthermore, keep in mind that the phytase reaction (again, like all enzymatic reactions) takes TIME. This is why the preferred method of reducing phytic acid is soaking and sprouting: soaking in water and an acidic medium helps to ensure that phytase actually reaches the physical proximity of the phytic-acid bound minerals. I highly doubt that consuming a high-phytase food along with a food rich in phytic acid would allow enough time for the enzyme reaction to take place.
Edit: That link that I posted has a note that phytin (the compound that phytic acid forms in plants) is not soluble inside our small intestine. This means that phytin inside your small intestine cannot be dissolved into solution, which is a necessary component of enzymatic reactions. In other words, the reaction of phytase with phytic acid that prevents the phytic acid from binding minerals CANNOT happen inside your body.