Erythritol is a kind of four-carbon sugar alcohol, which is a new type of zero-calorie sweetener obtained by fermentation, transformation and purification with glucose as the main raw material. After intake, there is almost no fluctuation of glucose and insulin in plasma. The national standard recommends that the energy coefficient of erythritol is 0 kJ/g.

Allulose is an epimer of fructose, a rare monosaccharide that naturally exists in nature but has very little content. The sweetness is 70% of sucrose, and the calories are 0.3% of sucrose. It has similar taste and volume characteristics to sucrose, and is the best substitute for sucrose in foods. It is called "low-calorie sucrose". The United States approved as a GRAS (Generally Recognized As Safe) substance, allowing D-psicose to be used as a dietary additive and some food ingredients. The United States, Japan, South Korea, etc. have been used in baking, beverages, candy and other foods.

Lactitol is a disaccharide alcohol produced by the reduction reaction of lactose, it is a white crystalline or crystalline powder, or a colorless liquid, easily soluble in water. The main forms of lactose alcohol are liquid lactose alcohol and crystalline lactose alcohol. Odourless and sweet, the sweetness is 30% ~ 40% of sucrose, and the calories are about half of sucrose. Lactitol can be used alone or mixed with other sweeteners to replace sucrose food with low caloric value. The U.S. FDA has granted it GRAS (recognized safe) status, with no limit on daily intake. China approved it can be used in ice cream, beverage, milk beverage and cakes as food additives.

Isomaltulose is a kind of food sweetener formed by white granulated sugar as raw material, transformed by sucrose isomerase, and then condensed, crystallized and separated. It is white crystal, odorless, sweet, and sweetness is about 42% of that of sucrose. The sweetness is pure, basically the same as sucrose, without bad aftertaste. This kind of sugar decomposes very slowly in the intestine, which balances the absorption and utilization of sugar by the human body, does not increase the blood sugar concentration, but also stimulates the growth and reproduction of beneficial bacteria in the intestine, and optimizes the human digestive system. It is very suitable for use in candies, beverages and various foods.