In the past hundred years, with the development of the sugar industry and food industry, human dietary structure has changed rapidly, but genes have not yet fully adapted to this point. The intake of a large amount of refined sugar has induced many health problems: obesity, diabetes, cardiovascular disease, etc. How to not only enjoy the joy of sweetness, but also avoid the troubles of obesity, "sucrose substitute" has become a major research focus of people's exploration, among which allulose is regarded as the best "sucrose substitute".

Infant milk powder, also known as infant formula milk powder, refers to the nutritional indicators of breast milk. It uses cow milk or goat milk and its products as the main base material, adjusts the ratio of whey protein and casein, and adds essential fatty acids linoleic acid and linolenic acid. Fortified vitamins and minerals can meet the needs of infants and young children for rapid growth and development. However, the content of oligosaccharides in cow's milk is very low, and oligosaccharides are added to infant formula powder to simulate the function of breast milk oligosaccharides as much as possible. People have identified through research that there are several factors in breast milk that can affect intestinal microbes, and among these factors, oligosaccharides are the most relevant component.

With the rapid development of society and economy and the tremendous changes in residents' lifestyles, the prevalence of overweight and obesity among Chinese residents has increased rapidly, which has become a serious public health problem. Obesity is closely related to a series of health problems such as high blood pressure, diabetes, and cardiovascular disease. As a result, consumers began to pay attention to dietary health problems and gradually shifted to low-sugar and low-calorie eating habits.