The subject invention relates in one aspect to an oxalate degrading composition, which includes at least one oxalate degrading enzyme. The composition includes an enriched insoluble component of fungal bio sample, and the composition is effective to degrade oxalate at a pH of 1.9 or higher. The composition is protected from protease degradation such as pepsin, trypsin and chymotrypsin. The composition is capable of withstanding the conditions of the stomach, small intestines, and/or large intestines of a subject.
