Measurements have been made of the amount of calcium, magnesium, zinc, iron, copper, manganese and nickel released into solution from three types of soya product prior to, and following the use of, in vitro enzymatic degradation procedures. The amount of solubilized metal has been shown to depend upon the enzymes used, the metal under consideration, the pH and the type of soya being studied. Such experiments may help to improve understanding of the behaviour of metals released from soya by the action of enzymes in the gastro‐intestinal tract.