Abstract
Abstract Effects of different concentrations of aqueous 1-methylcyclopropene (1-MCP) on Rosa sterilis D. shi fruits were investigated. The fruits were harvested at commercial maturity stage and treated with 1-MCP treatment at 0.5, 1.0, and 1.5 μL L-1 for 20 h at 25 °C in an air tight chamber along with control sample to evaluate the effect of 1-MCP concentration on its quality during storage. The result showed that postharvest treatment with 1.0 μL L-1 1-MCP suppressed the respiration rate, ethylene production rate and POD activity in Rosa sterilis D. shi fruits, inhibited the transport of reducing sugar and the increase of cellulose, delayed the increase in PPO activity, and retarded the decrease in ascorbic acid. The regulation of fibrosis process with postharvest 1.0 μL L-11-MCP treatment could be used to maintain the quality of Rosa sterilis D. shi fruits.
Highlights
The respiration rate of Rosa sterilis D. shi fruits decreased with further storage, the respiration rate was significantly suppressed by treatment of 1-MCP (Figure 2A)
We found that the cellulose was accumulated in Rosa sterilis D. shi fruits, which was consistent with previous report (Xie et al, 2017)
Our results showed that the degradation of polysaccharide in Rosa sterilis D. shi fruits leads to increase of reducing sugar and decline of cellulose during early storage
Summary
Rosa sterilis D. shi fruit is a climacteric (Lin et al, 2016; Xie et al, 2017), water loss, wilting, fibrosis, rot and disease of Rosa sterilis D. fruit resulted in the loss of eating quality and commercial value during storage. As the cell lengthens and the secondary wall thickens, a large amount of cellulose is synthesized and formed fiber bundles. The synthesis of cellulose in common bean is commonly related to the activities of POD and PPO (Miao et al, 2012), and is generally an increase in activities of POD and PPO, and a decrease in reducing sugar (Miao et al, 2012; Wang et al, 2013)
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