Black goji berries are the fruits of perennial shrubs belonging to the genus Lycium in the Solanaceae family. They mainly grow in the arid regions of northwest China (such as Qinghai, Ningxia, Xinjiang, etc.). Due to the large temperature difference between day and night and strong sunlight in the growing environment, the fruits accumulate rich nutrients. Compared with the common red goji berries, black goji berries are darker in color (turning purplish black when ripe), have a sweeter taste and a slight fruity aroma.
Production process: Usually, fresh black goji berries are used. After being washed, the moisture is removed through low-temperature freeze-drying or natural sun-drying (traditional methods), and then ground into powder at low temperature to retain the heat-sensitive nutrients (such as anthocyanins) to the greatest extent. High-quality products will be sieved to ensure that the powder is fine, uniform and free of impurities.
Appearance: It is a deep purple to dark purple powder with fine texture and good fluidity (in a dry state). If it comes into contact with water, it will quickly release purple or blue pigments (because anthocyanins show different colors at different pH values: they tend to be reddish purple in acidic water and bluish purple in alkaline water).
Smell and taste: It has a light fruity aroma characteristic of black goji berries and no pungent smell. It has a slightly sweet taste with a hint of natural astringency (due to a small amount of tannin), and a mild texture.
The value of black goji berry powder mainly stems from its rich antioxidant components, especially anthocyanins, which are much higher than those in common foods such as red goji berries and blueberries. In addition, it also contains a variety of nutrients
Anthocyanin: It belongs to flavonoid compounds and is one of the most powerful antioxidants in nature. Its antioxidant capacity is 20 times that of vitamin C and 50 times that of vitamin E. It can eliminate free radicals and protect cells from oxidative damage.
Vitamins: It contains vitamin C, B vitamins (such as B1, B2), etc. Among them, vitamin C can enhance immunity and promote the synthesis of collagen.
Minerals: Rich in potassium, calcium, magnesium, iron, zinc, etc. Potassium helps regulate blood pressure, and iron participates in the synthesis of hemoglobin, preventing iron deficiency anemia.
Amino acids: They contain a variety of essential amino acids for the human body (such as leucine and phenylalanine), which are the basic units that constitute proteins and help with the repair of body tissues.
Polysaccharides: The polysaccharide components in black goji berries have potential effects such as regulating immunity and anti-fatigue (most related studies are based on animal experiments, and the human effects need further verification).
Antioxidant and anti-aging: Anthocyanins are the core active ingredients, which can combat the damage of free radicals to the skin, blood vessels and organs, delay skin aging (such as reducing wrinkles and improving dull skin tone), and at the same time protect the cardiovascular system and reduce the risk of oxidative stress-related diseases.
Protecting eye health: Anthocyanins can promote the regeneration of rhodopsin in the retina, relieve eye fatigue, improve vision (especially having a certain auxiliary effect on dryness and blurriness caused by long-term eye use), and reduce the damage of blue light to the eyes.
Boosting immunity: Components such as vitamin C and polysaccharides work together to enhance the activity of immune cells, strengthen the body's resistance to pathogens, and reduce the occurrence of diseases like colds.
Auxiliary regulation of metabolism: With the characteristics of low calories and high fiber (in moderation), it is suitable as a supplement to a healthy diet. Dietary fiber helps intestinal peristalsis and prevents constipation. Meanwhile, its natural sweetness can replace some added sugar, making it suitable for people who need to control their blood sugar.
Protecting cardiovascular health: Anthocyanins can inhibit inflammation of vascular endothelium, improve vascular elasticity, and assist in lowering blood lipids and blood pressure, which is of positive significance to cardiovascular health (it needs to be combined with a healthy lifestyle and cannot replace medication).
Daily beverages: It can be directly dissolved in warm water (≤60℃, to avoid high temperature destroying anthocyanins) for drinking, or added to milk, yogurt, fruit juice or soy milk for flavoring. It is both convenient and retains nutrients.
Baking and desserts: It is used to make bread, cakes, cookies, puddings, etc. It not only adds a natural purple color but also enhances nutritional value, making it suitable for healthy baking scenarios.
Meal replacement and functional foods: As nutritional supplements added to meal replacement powder, energy bars, and Protein Powder, they enrich the antioxidant components of the products and are suitable for people who pay attention to health management. 
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