1. Different compositions

Energy refers to the energy produced by protein, fat and carbohydrate in food in human metabolism. On the nutrition label, the food energy is the sum of protein, fat and carbohydrate multiplied by the corresponding energy coefficient, and the calculation method is: food energy = protein x4+ fat x9+ carbohydrate x4.

Sugar includes sucrose (brown sugar, white sugar, granulated sugar and yellow sugar), glucose, fructose, galactose, lactose, maltose, starch, dextrin and glycogen marshmallow.

Carbohydrate in food refers to sugar, oligosaccharide and polysaccharide, and is an important nutrient for providing energy.

2. Different subordination

Sugar in the food nutrition composition table belongs to carbohydrate, and carbohydrate belongs to a nutrient in energy. That is to say, energy contains carbohydrates, and carbohydrates contain sugar.

3. Different labels

Energy is usually labeled in kilojoules (kJ) and kilocalories (kcal) in the food nutrient composition table, while carbohydrates are expressed in grams (G). Because carbohydrates contain sugar, sugar will be marked in the ingredient list in detail.

central government portal-questions and answers on "food nutrition label management standard"

Baidu encyclopedia-carbohydrate

Baidu encyclopedia-sugar.