4. Conclusion
Strawberry processing products are negatively affected by many factors because of the instability of anthocyanins. SJ color was highly sensitive to thermal treatment, pH and sunlight exposure. Storage temperature also significantly affected the SJ color. This study may serve as a technical reference for the processing and storage of SJ to maintain color stability. The stable color of SJ can be achieved by adjusting pH below 3.0, heating below 80 °C for less than 20 min during blanching or pasteurization, packaging with light-tight materials, and storage and distribution by chill chain (2 °C–4 °C).