Peroxidase-like activity on organic hydroperoxides of ion-exchange resins modified with metal-porphine analogues and analytical application for determination of linoleate hydroperoxide

The ion-exchange resins modified with metal–porphyrins and –phthalocyanines (M–Pr) have been found to exhibit a peroxidase (POD)-like activity on organic peroxides in a reaction wherein a quinoid dye is formed from phenol and 4-aminoantipyrine. Among them, Mn– and Co–Pr exhibited stronger activity than hemoglobin and Fe–Pr, and hence were expected to be practically useful as a solid catalyst for the determination of linoleate hydroperoxide (LOOH). In addition, a resin modified with Co3+–phthalocyanine tetrasulfonate (Co–PCSr) lacks POD-like activity on hydrogen peroxide in contrast with Mn–Pr. We, therefore, concluded that Co–PCSr is superior to both Mn–Pr and hemoglobin as a solid catalyst on organic hydroperoxides, and developed a new method for the determination of LOOH.