Blackberries are high in vitamin C, are a good source of dietary fibre, and contain ellagic acid, a phytochemical that may help prevent cancer. Research has shown that several berries have medicinal properties. (Cranberries and blueberries help prevent urinary tract infections.)
Blackberries also called bramble berries because they grow on thorny bushes (brambles), blackberries range from one-half to an inch long when mature and are purplish black. Like raspberries, to which they are related, blackberries are oblong and are made up of small edible seeds that are encased in juicy globules adjoining a fleshy base.
Storing Blackberries
Blackberries are best used immediately because they spoil quickly. They can be lightly covered and refrigerated for 1 to 2 days
2002. Encyclopedia of foods. San Diego, Calif.: Academic Press