Calcium Availability in Foods Containing Oxalates A Preliminary Report

Council on Foods

“…Large characteristic crystals of this substance may be seen on sectioning the leaves of spinach. In feeding experiments with rats, Kohman and Sanborn 34 found that the availability of calcium in calcium oxalate is low. Furthermore, the presence of soluble oxalates is detri¬ mental because calcium which is otherwise available is rendered unavailable by the presence of these salts.…”