1, see the ingredient list: blueberry juice is good, the juice concentration is high, and there are no additives, preservatives, pigments, flavors and additives.

2. Look at the price: the purchase price of a catty of wild blueberries is around 30 yuan, and a bottle of blueberry juice with a content of 50% should be sold in 8 yuan at least.

3. Take a piece of tissue paper, 3 layers thick, and drop a small amount of blueberry juice in the middle of the tissue paper. If the color spreads evenly, it is the real blueberry juice. If only the tissue paper in the middle is heavy in color and the edges are soaked but colorless, it is blueberry juice with additives.

4, look at the effect: wild blueberries have high anthocyanin content. Blueberry anthocyanins can scavenge free radicals in the body. Real blueberry juice has a strong detoxification effect. If you drink it every day, you can't observe your detoxification phenomenon for 3 days. Consider the authenticity of this blueberry juice.

When faced with the low price temptation of blueberry juice, don't buy blueberry-flavored drinks made of essence, pigment and cyclamate like blueberry juice. For the health of family members, it is best to buy blueberry juice of famous brands in regular shopping malls, and don't covet cheap and inferior products.