Abstract
Effects of different calcium chloride, chitosan and pullulan coating treatments on antioxidant activity of “Huang guan” pears (Pyrus pyrifolia Nakai) during storage have been studied. Total phenolic content, phenolic composition, total flavonoid content, superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) activities, and antioxidant activity (1,1-diphenyl-2-picrylhydrazyl (DPPH), 2'-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid (ABTS), ferric reducing antioxidant potential (FRAP)) were determined in peel and pulp tissues over 210 days. Coating treatments slowed decrease of total phenolic and flavonoid contents, chlorogenic acid, arbutin, catechin and caffeic acid, SOD and CAT activities, and total antioxidant activity. However, POD activity was inhibited. The antioxidant content in the peel was higher than in the pulp. Of the coatings, chitosan was the most effective, but overall, all coatings may be useful to extend shelf-life, maintain quality and control decline of antioxidant activity in pear.
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We are very grateful to Dr. Christopher Brian Watkins (Cornell University) for critical reading of the manuscript. This work was funded by key projects in the National Science and Technology Pillar Program during the 11th 5-year plan period (2006BAD22B01) and the National Natural Science Foundation of China (project no. 31171769).
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Kou, XH., Guo, Wl., Guo, Rz. et al. Effects of Chitosan, Calcium Chloride, and Pullulan Coating Treatments on Antioxidant Activity in Pear cv. “Huang guan” During Storage. Food Bioprocess Technol 7, 671–681 (2014). https://doi.org/10.1007/s11947-013-1085-9
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DOI: https://doi.org/10.1007/s11947-013-1085-9