Extended data

Winter jujube, also known as frozen jujube, wild goose red, apple jujube and rock sugar jujube, is currently recognized as a fresh and high-quality cultivated variety. The fruit of Dongzao jujube is nearly round, with smooth and smooth surface, like a small apple, juicy, sweet and slightly sour. Winter jujube is rich in nutrients. In addition to the nutrients in other jujube fruits, the pulp of winter jujube is also rich in 19 amino acids and vitamins A, B, C, D and so on, and the content of vitamin C is high. Winter jujube also contains a variety of trace elements such as potassium, sodium, iron and copper, as well as anticancer substances such as adenosine cyclophosphate and guanosine cyclophosphate.

Huanghua Dongzao was approved by the General Administration of Quality Supervision, Inspection and Quarantine in 2002 as a protected variety of Dongzao (later changed to a geographical indication product).