The presence of pores had a significant impact on tensile strength weakening the obtained extrudate. The highest tensile strength values were recorded for the foams from corn starch, while the lowest for those containing wheat starch. Denser foams tend to have thicker cell walls and hence resist deformation better than lower density foams with thinner cell walls. For foams made from corn and potato starches, compressibility values were quite comparable to that of EPS.