A colorimetric micro-method for the determination of glucose

Abstract

The absorption spectrum ofthe haemoprotein or the nature of the ligands co-ordinated with it would then be irrelevant. All the components revealed by this study would then be 'peroxidases' if they are indeed separate, naturally occurring species. The term 'paraperoxidase' with its implication of the modification of an original enzyme could be applied in the sense of Keilin & Hartree (1951) to the in- soluble or less-soluble derived materials formed from peroxidases on storage. Component A1 may thus have formed a 'paraperoxidase' in our experiments on the ageing of horse-radish juice. SUMMARY 1. The peroxidases of horse-radish juice and the latex serum of Ficus macrophylla have been ex- amined by filter-paper electrophoresis.