title: Postharvest chitosan-g-salicylic acid application alleviates chilling injury and preserves cucumber fruit quality during cold storage.
abstract: The effect of salicylic acid with and without chitosan, or a chitosan-g-salicylic acid complex, on chilling injury and post-harvest quality of cucumber stored at 2 °C for 12 days plus 2 days at 20 °C was investigated. The results showed the chitosan-g-salicylic acid coating inhibited chilling injury better than salicylic acid alone or with chitosan. Chitosan-g-salicylic acid also reduced weight loss and respiration rate, limited increases in malondialdehyde content and electrolyte leakage, and maintained higher total soluble solids, chlorophyll and ascorbic acid content. Furthermore, this coating increased the endogenous salicylic acid concentrations and antioxidant enzyme activities including superoxide dismutase, catalase, ascorbate peroxidase and glutathione reductase in cucumber during storage. Our study suggests that chitosan-g-salicylic acid alleviated chilling injury in cucumber through sustained-release of salicylic acid and the higher antioxidant enzymes concentrations.
authors.affiliation: School of Agriculture and Food Science, Zhejiang Agricultural & Forestry University, Huan Cheng Bei Lu # 88, Lin'an, Hangzhou 311300, People's Republic of China.
authors.forename: Youzuo
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: School of Agriculture and Food Science, Zhejiang Agricultural & Forestry University, Huan Cheng Bei Lu # 88, Lin'an, Hangzhou 311300, People's Republic of China.
authors.forename: Meiling
authors.initials: M
authors.lastname: Zhang
authors.affiliation: School of Agriculture and Food Science, Zhejiang Agricultural & Forestry University, Huan Cheng Bei Lu # 88, Lin'an, Hangzhou 311300, People's Republic of China. Electronic address: yanghuqing@sohu.com.
authors.forename: Huqing
authors.initials: H
authors.lastname: Yang
mesh_terms: D000975:Antioxidants / Q000494:pharmacology*; D048271:Chitosan / Q000494:pharmacology*; D003080:Cold Temperature / Q000009:adverse effects*; D018553:Cucumis sativus / Q000737:chemistry*; D020156:Salicylic Acid / Q000494:pharmacology*
chemical_list: D000975:Antioxidants; D048271:Chitosan; D020156:Salicylic Acid
keywords: Antioxidant enzymes; Chilling injury; Chitosan-g-salicylic acid; Cucumber; Salicylic acid