Divided into four grades, the transverse diameter of jujube fruit such as fresh jujube is 3.7 cm; The transverse diameter of fresh jujube fruit is 3.2-3.7 cm; The transverse diameter of the second-grade jujube fruit of fresh jujube is 2.7-3.2 cm; The transverse diameter of the third-grade jujube fruit of fresh jujube is 2.3-2.7 cm; Jujube with transverse warping of single fruit less than 2.3 cm is equiaxed jujube. The grade corresponding to fresh dates is the grade corresponding to dried dates.

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Medicinal value

According to traditional medicine, jujube is a medicine for invigorating qi, which has the functions of nourishing stomach and spleen, enriching blood and benefiting qi, detoxicating, protecting liver and strengthening tendons, moistening lung and relieving cough, treating deficiency and nourishing stomach.

The medicinal use of jujube was first recorded in Shennong Herbal Classic, the earliest existing medical classic in China. Jujube is listed as the "top grade" in the book, and it is said that it has the effects of "calming the middle energizer, nourishing spleen and ribs, calming stomach qi, dredging nine orifices, nourishing less qi and body fluids, being deficient in the body, having palpitations, being heavy in limbs and harmonizing various medicines".

Zhang Zhongjing, a "medical sage" in Han Dynasty, listed 1 13 prescriptions in Treatise on Febrile Diseases, among which 65 prescriptions used red dates. Li Shizhen in Ming Dynasty said in Compendium of Materia Medica: "Jujube is the fruit of spleen, which is suitable for spleen diseases. It is called a cure, and jujube is divided into spleen and blood. "

Sun, secretary-general of the Cancer Nutrition Support and Treatment Committee of China Anti-Cancer Association, said that from a nutritional point of view, red dates are rich in minerals such as potassium, calcium, iron, manganese, copper and selenium, as well as nutrients such as carotene, B vitamins and vitamin E. It is the "king of tonic" in fruits.

Not only that, jujube is also a "rich place" for plant nutrients, such as adenosine cyclophosphate, rutin, jujube polysaccharide, triterpenoids and so on. These active ingredients have brought many health-care effects to jujube, such as antioxidation, anti-aging, improving immunity, preventing cardiovascular diseases, protecting liver, caring skin and resisting fatigue.

In particular, more and more studies have confirmed that red dates also play a certain role in cancer prevention.

First, jujube is rich in cyclic adenosine monophosphate and cyclic guanosine monophosphate. Studies have confirmed that these two active ingredients can inhibit the proliferation of tumor cells and induce their maturation and differentiation.

Secondly, red dates are rich in triterpenoids (such as maslinic acid) and adenosine diphosphate. Triterpenoids mostly have the effect of inhibiting cancer cells, among which maslinic acid has the strongest effect. Although adenosine diphosphate does not have the ability to inhibit cancer cells, it can regulate cell division. The synergistic effect of the two can make the abnormal proliferation of cancer cells divide in the normal direction.

Thirdly, the polyphenols active substances rich in jujube can prevent cell mutation, prevent cell canceration and further development. Fourthly, jujube also contains β-D- glucan, which has been proved by animal experiments to have the effect of inhibiting tumor growth.

Baidu Encyclopedia-Hetian Yuzao

People's Network-Jujube, an "anti-cancer expert" in food