Polyphenol oxidase

Gene expression of antioxidant enzymes and coffee seed quality during pre- and post-physiological maturity

F. C. Santos, Caixeta, F., Clemente, A. C. S., Pinho, E. V., and Rosa, S. D. V. F., Gene expression of antioxidant enzymes and coffee seed quality during pre- and post-physiological maturity, vol. 13, pp. 10983-10993, 2014.

Seeds collected at different maturation stages vary in physiological quality and patterns of protective antioxidant systems against deterioration. In this study we investigated the expression of genes that codify catalase (CAT), dismutase superoxide (SOD), and polyphenol oxidase (PPO) during the pre- and post-physiological maturation phases in whole seeds and in endosperms and embryos extracted from the seeds. Coffea arabica L. berries were collected at the green, yellowish-green, cherry, over-ripe, and dry stages, and the seeds were examined physiologically.

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