Nutritional composition of blackcurrant raisins: blackcurrant is very rich in vitamin C, phosphorus, magnesium, potassium, calcium, anthocyanins, phenolic substances. Blackcurrant fruit contains a large number of vitamins A, B, C, D, E, F, P group, etc., especially the content of vitamin C is higher than the vast majority of fruits, than apples, peaches and grapes to be a few times higher than the content of hundreds of times; contains a high proportion of minerals calcium, magnesium, sodium, potassium, iron, phosphorus and zinc, etc., of which the content of calcium for the crown of the fruit, for young children and the elderly to supplement the calcium is very suitable.

Blackcurrant is rich in protein and carbohydrates, in the total carbohydrates, glucose accounted for 43%, fructose accounted for 57%, glucose can be directly to the human body to replenish energy, fructose is not only able to replenish energy, but also inhibit the body's consumption of protein, which can be used for athletes and manual laborers nutritional supplements.

The pigment content in blackcurrant is very rich, amounting to 4.53%. Blackcurrant pigment is a water-soluble natural pigment, which belongs to the class of floridoside, with strong coloring power, and the main components are anthocyanin-3- glucoside, anthocyanin-3- rutin, cuirassin-3- glucoside and cuirassin-3- rutin in four major categories. Anthocyanins can inhibit and hinder platelet coagulation caused by collagen, arachidonic acid, adrenaline, adenosine triphosphate, etc., which can prevent blood clots and atherosclerosis caused by platelet coagulation in blood vessels.

The total phenolic content of blackcurrant juice reaches 2863mg/100g, and the antioxidant power reaches 27.86TEACmmol/100g, which endows it with the function of scavenging free radicals in the body and slowing down the aging of the organism.

Blackcurrants are rich in organic acids, especially citric acid. These citric acid and other organic acids can not only discharge the lactic acid accumulated in the blood, but also inhibit the production of new lactic acid, to achieve the role of cleaning the blood, in addition to improving appetite, restore energy, improve fatigue, improve constipation, tranquilize the mind, relieve boredom and other functions.