Effect of Phytate and Partially Hydrolyzed Phytate on in vitro Protein Digestibility |
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| Authors: | B E KNUCKLES D D KUZMICKY A A BETSCHART |
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| Affiliation: | Authors Knuckles, Kuzmicky, and Betschart are affiliated with the USDA-ARS, Western Regional Research Center, 800 Buchanan St., Albany, CA 94710. |
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| Abstract: | The effects of sodium phytate and partially hydrolyzed sodium phytate (0 - 82% hydrolyzed) on pepsin digestion of casein and bovine serum albumin were evaluated by an in vitro procedure using dialy-sates of pepsin digestion over a period of 0 – 23 hr. The inhibitory effect of phytate differed with substrate and increased with dose level. At the highest phytate level, the digestion of casein and bovine serum albumin was reduced by 14% and 7%, respectively. The inhibitory effect of the phytate was inversely correlated with the degree of phytate hydrolysis. Hydrolysis for 16 hr almost eleminated the inhibitory effect of phytate. |
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