1. Refrigerate for freshness (to reduce the rate of reaction). Protect the fresh apple juice with plastic wrap, then put it into the refrigerator to keep it fresh.

2, chemical preservation (add antioxidants). Food additives are usually added to foods to extend their shelf life. Similarly, you can add some sodium citrate and other substances as antioxidants in fruit juice to extend the shelf life.

3. Air barrier. You can cover the fresh juice with plastic wrap to maximize the oxygen barrier between the juice and the air.