Author/Authors :
Chen، نويسنده , , Fusheng and Liu، نويسنده , , Hui and Yang، نويسنده , , Hongshun and Lai، نويسنده , , Shaojuan and Cheng، نويسنده , , Xiaoli and Xin، نويسنده , , Ying and Yang، نويسنده , , Bao-Yong Hou، نويسنده , , Hongjiang and Yao، نويسنده , , Yongzhi and Zhang، نويسنده , , Shaobing and Bu، نويسنده , , Guanhao and Deng، نويسنده , , Yun، نويسنده ,
Abstract :
Effects of CaCl2 (0%, 1% and 4%) treatment on quality attributes and cell wall pectins of strawberry fruits stored at 4 °C for 15 d were investigated. Strawberry firmness was not significantly affected by CaCl2 treatment. Compared to the other groups, the 1% CaCl2 group had better quality attributes, including decay rate, weight loss and soluble solids content. The treatment with 4% CaCl2 inhibited weight loss but caused phytotoxicity. During storage, the chain widths and lengths of water-soluble pectin (WSP), chelate-soluble pectin (CSP) and sodium carbonate-soluble pectin (SSP) decreased. Strawberry softening seemed to be due to modifications of CSP and SSP, especially the side chains. CaCl2 treatment significantly slowed the breakdown of CSP and SSP chains by strengthening the ionic crosslinkages among these pectin molecules. These results illustrate the fundamental CaCl2 effects and will help improve the application of CaCl2 to postharvest fruits.
Keywords :
strawberry , Calcium chloride , pectin , Nanostructure , Atomic force microscopy (AFM)
