For this fresh or frozen blueberries are spaced in cans, light syrup or water is added to cover the head space and cans are sealed and heat processed at about 93 – 95 °C with 25-30 minute holding time.Canned blueberries may vary from a highly attractive, free flowing product to one that is clumped into a firm mass. Clumping can be greatly reduced by cooling with agitation, which apparently interferes with binding together of berries by surface wax or cutin.
Canned blueberries packed in water are low in calories and carbohydrates. While canned blueberries packed in heavy syrup contain about two and one-half times the calories and carbohydrates that are represent in canned berries packed in water alone.
Compared with other fruits, canned blueberries are an excellent source of iron, a fair source of vitamin A, about average in protein, fat, carbohydrate, and calcium and low in phosphorus.
Canned blueberries
