Tagatose takes lactose as raw material and hydrolyzes to obtain galactose (because lactose is a reducing disaccharide formed by the combination of galactose and glucose). Galactose is an isomer of glucose, which is also a kind of hexaaldose. Then, after being treated by isomerase, galactose is transformed into hexacarbohexose containing ketone group. Tagatose is a new type of monosaccharide from natural sources and a "differential isomer" of fructose; The sweetness is 92% of the same amount of sucrose. It is a good low-energy Food Sweetener and filler. It has a variety of physiological effects such as inhibiting hyperglycemia, improving intestinal flora and preventing dental caries. It is widely used in food, medicine, cosmetics and other fields.
Tagatose function
Low energy
Tagatose taken by the body cannot be completely absorbed by the small intestine. Animal experiments show that tagatose consumes more energy in the metabolic process than the available energy released by tagatose, does not cause fat precipitation, and the energy provided is much lower than sucrose. Therefore, tagatose is a new low-energy Sweetener , which can reduce the incidence of obesity.
Hypoglycemic
The study found that for healthy people and patients with type 2 diabetes, the blood glucose level and insulin level were not significantly changed by the action of tag, and the glycemic elevation caused by glucose intake was significantly inhibited.
Improve intestinal flora
80% of the human tagatose taken by the body can not be absorbed by the small intestine. This part of the unabsorbed tagatose is fermented and utilized by some microbial flora in the colon to promote the appreciation of beneficial bacteria, inhibit the growth of harmful bacteria and significantly improve the intestinal flora. Some studies believe that tagatose can inhibit colon cancer, inhibit intestinal pathogens and promote the growth of beneficial bacteria such as lactic acid bacteria.
Anti caries
The study found that tagatose can not be used by microorganisms in the mouth, and will not reduce the pH value of dental plaque, so it will not cause dental caries. Tagatose has good effects in inhibiting dental plaque and eliminating halitosis. It can be applied to oral products, such as toothpaste, chewing gum, etc.
Application Area
D-tagatose, as a functional sweetener, has a wide application prospect in the food industry. It is mainly used in health drinks, dairy products, candy, grain food and so on.
Application in health drinks
In the beverage industry, the synergistic effect of D-tagatose on strong sweeteners such as cyclamate, aspartame, acesulfame and stevia is mainly used to eliminate the bad aftertaste such as metal taste, afterbitterness and astringency produced by strong sweeteners and improve the taste of beverages. In 2003, PepsiCo began to add a combined sweetener containing tagatose to carbonated drinks to obtain zero calorie and low calorie health drinks basically similar to full calorie drinks
Application in dairy products
As a low calorie sweetener, tagatose can significantly improve the taste of dairy products by adding a little. Therefore, tagatose is contained in sterilized powdered milk, cheese, yoghurt and other dairy products. With the in-depth study of the properties of tagatose, the application of tagatose has been extended to more dairy products. For example, the rich and mellow toffee flavor can be obtained by adding tagatose to chocolate dairy products. Tagatose can also be used in yogurt. While providing sweetness, it can increase the number of live bacteria in yogurt, improve the nutritional value of yogurt and make the flavor more rich and mellow.
Application in grain products
Tagatose is easy to scorch and saccharify at low temperature, which makes it easier to produce ideal color and mellow flavor than sucrose. It can be used in baked food. It is found that tagatose can react with amino acids to produce volatile flavor substances such as 2-Acetylfuran, 2-ethyl pyrazine and 2-Acetylthiazole, which are higher than those produced by reducing sugars such as glucose and galactose.
Application in candy
Tagatose can be used as a sweetener in chocolate without much change. The viscosity and endothermic properties of chocolate are similar to those when sucrose is added. New Zealand Mada sports nutrition food company first developed chocolate products with tagatose flavors such as milk, dark chocolate and white chocolate, and then developed various novel chocolate products with tagatose such as chocolate coated dried fruit, dried fruit bar and Easter eggs.
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