2.5. Experiment for storage temperature
The bottles containing SJ were heated at 80 °C for 20 min and then rapidly cooled in a water bath to room temperature. Half of 18 bottles was stored at room temperature (July, 30 ± 5 °C), and another half was placed in the refrigerator at 2 °C–4 °C. Three bottles from each storage were sampled from each storage condition to determine the Ab510, L*, and a* values every 20 d.