The enzyme inhibitors in pomegranate juice can help to prevent damage to the cartilage. It can also help to control cartilage degeneration to prevent osteoarthritis. choose pomegranates that have smooth skin, free from any bruises, cuts or mold. At home, store the fruits in cool dark place at room temperature for 58 days or more. In general, they possess a long shelf life. You can also place them inside the refrigerator for a couple of weeks.