Antioxidant activity 1 Antioxidant enzyme 1 Article 1 Chilling injury 1 Physical quality attributes 1 Pineapple 1 agricultural parameters 1 antioxidant activity 1 ascorbate peroxidase 1 catalase 1 catechol oxidase 1 cryopreservation 1 enzyme activity 1 enzyme assay 1 fruit color 1 fruit firmness fruit weight 1 ion leakage 1 nonhuman 1 oxidative stress 1 pH 1 pineapple 1 plant browning 1 plant chilling injury 1 product quality 1