1, black jujube is not jujube, but a kind of persimmon. Black jujube scientific name jun qianzi, also known as wild persimmon, is a kind of like persimmon but and persimmon and not the same as the fruit dried and become. It is mainly divided into nuclear and non-nuclear two kinds, there are big nuclear black jujube, milk jujube and grape black jujube and other varieties, widely distributed in northern China.

2, black jujube nutritional value is very high, its total sugar content of up to 45.7%, pectin content of 3.5% or so, and its vitamin C content is more than ten times that of apples, peaches and other fruits, up to 97.9 milligrams per hundred grams. The black date tree young leaves of vitamin C content is higher, per 100 grams of 1148 mg, killing the "King of Vitamin C" known as kiwifruit.