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The urushiol tyrosine resin(UTR) was synthesized from tyrosine and gasoline solution of urushiol by using anhydrous AlCl 3 as catalyst. Its structure has been studied by IR, UV and DTA. The UTR Cu was obtained by impregnation of UTR in Cu 2+ solution. The polyphenol oxidase obtained from banana was immobilized on UTR Cu complexes. The immobilized oxidase(UTR Cu En) had an activity of 1 1 A/(min·g), that is, 6 5 times greater than that of oxidase immobilized on active carbon. A possible structure of the UTR Cu immobilized enzyme is suggested.
The structure of the urushiol tyrosine resin (UTR) was synthesized from tyrosine and gasoline solution of urushiol by using anhydrous AlCl 3 as catalyst. Its structure has been studied by IR, UV and DTA. The UTR Cu was obtained by impregnation of UTR in Cu 2+ solution The polyphenol oxidase obtained from banana was immobilized on UTR Cu complexes. The immobilized oxidase (UTR Cu En) had an activity of 1 1 A / (min · g), that is, 6 5 times greater than that of oxidase immobilized on active carbon. A possible structure of the UTR Cu immobilized enzyme is suggested.