The Shelf-1ife Prediction of Sweet Orange Based on Its Total Soluble Solid by Using Arrhenius and Q 10 Approach

摘要

The information about shelf-1ife of sweet orange is necessary for its post-harvest handling to reduce the loss facing by farmers and sellers.The study aimed to observe if the Arrhenius and Q 10 models can be used to predict the shelf-1ife of sweet orange based on its total soluble solid(TSS).The fresh sweet oranges obtained from the market were stored at three extreme temperatures i.e.55,65,and 70°C.During the storage,the TSS was analyzed every hour,until the sweet oranges quality had decreased.The TSS was observed by using a hand digital refractometer.The TSS change in linear model was chosen to perform the Arrhenius model since its R-square value was higher than that of exponential model.The study had proved that there was a possibility of using the Arrhenius and Q 10 models to predict the shelf-1ife of sweet oranges based on its TSS contents.The Arrhenius model of TSS change was and the Q 10 value was 1.92.The real shelf-1ife of sweet orange at storage temperature 10°C was 18 days.The shelf-1ife of sweet orange at any storage temperatures can be predicted by,and as the results of drawing this prediction,the shelf-1ife of sweet orange can be simply calculated by,for more comfortable and easy purposes.However,the shelf-1ife prediction model of sweet orange should be improved by further study since it contains a relative error above 2%.For further study it is suggested to assure the TSS change at temperature 55°C as well as the ascorbic acid change in order to improve the shelf-1ife prediction of sweet oranges.