Each 100 grams of ripe blueberries contains about 7 grams or so of sugar.
The value of around 7 grams may not seem high, but if we consider the size and weight of the blueberries, we realize that the content is actually not low. For example, a medium-sized blueberry weighs about 20 grams or so, while 100 grams of blueberries would have the equivalent weight of 4 medium-sized blueberries. Therefore, if we consume a large number of blueberries in a day, we are likely to consume a lot of sugar and increase our blood sugar levels.
100 grams of blueberries can yield 57 calories, which is equivalent to about 14 grams of glucose. In general, eating about 20 blueberries contains about 7 grams of sugar. Therefore, you need to eat a moderate amount of blueberries every day, not too much. Blueberry as an emerging small berry species with high economic value and broad development prospects. In the British authoritative nutritionist listed in the world's 15 kinds of health food, in the first place, and by the International Food and Agriculture Organization as one of the five human health food.
Blueberry growth environment
Blueberry growth optimal temperature of 13-30 ℃ can tolerate a maximum of 40-50 ℃ high temperature, higher than this temperature range will lead to the root system of poor absorption of water and poor development. Different types of blueberry distribution areas have different climatic conditions. Dwarf blueberry growing season in the distribution area is short, cold winters and cool summers, the average annual temperature of 5-12 ℃, December to January the following year, the average temperature below 0 ℃, the extreme minimum temperature of up to -40 ℃.
Rabbite's eye blueberry and southern highbush blueberry distribution area has a long growing period, warm winters and high summer temperatures, the average annual temperature of 18-22 ℃, the annual growing period of up to 256-285 days, the average monthly temperature in January is close to 10 ℃ or more than 10 ℃, the absolute minimum temperature of -16 ℃ or more. North highbush blueberry distribution area climate conditions between the above two distribution areas, the average annual temperature of 10-120 ℃, the growing period of 150-250 days. The average monthly temperature in winter can be up to 0 ℃ or less, the absolute minimum temperature is often -20 ℃, but not below -30 ℃.
Refer to Baidu Encyclopedia - Blueberry for the above