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The enzymatic degradation of ascorbic acid. Part I—the inhibition of the enzymatic oxidation of ascorbic acid by substances occurring in black currants

F. C. Hooper, A. Ayres, 1950 .

Enzymic Degradation of Pectic Acid and the Complex Nature of Polygalacturonase

G. Solomons, W. W. Reid, J. Dingle, 1952, Nature.