Loss Estimation of Litchi Fruit due to Pericarp Browning
The loss estimation of litchi fruit due to pericarp browning is an important step of the litchi pericarp browning control.The loss estimationof the Lanzhu litchi fruit due to pericarp browning was investigated in this paper and a theoretic basis for the litchi pericarp browning control was established.Based on the investigation of the Lanzhu litchi pericarp browning,the impact of the pericarp browning on the sensory quality and sale price of litchi fruit were analyzed.When the pericarp browning reached level Ⅲ,the significant impact on the sensory quality and sale price of litchi fruit was found.According to the relationship between the different browning level and loss rate,the best estimation models for fresh flavor,total soluble solids,economic loss rate of Lanzhu litchi was established,which were logistic model FALR=62.279 8/[1+EXP(5.086 8-1.241 0 X)],logistic model TSSLR=37.120 6/[1+EXP(5.474 0-1.689 7 X)]and linear model ELR=-24.671 0+19.347 0 X.Using the models,the daily quantitative loss estimation of Lanzhu litchi at room temperature in Fujian Province was analyzed and the results showed that longer storage time would lead to higher economic loss of Lanzhu litchi.