Uses of Polydextrose in Food

Polydextrose is a water-soluble dietary fiber. It is often used to increase the dietary fiber content of foods, replace sugar, and reduce calorie and fat content. With its unique physiological health benefits, polydextrose holds significant potential for development in various fields such as food, pharmaceuticals, and healthcare. In this article, we will primarily focus on the applications of polydextrose in food, including dairy products, baked goods, ice cream, various beverages, and more.

Introduction to Polydextrose

polydextrose is a low-calorie, small-molecule polysaccharide formed by the high-temperature polymerization of glucose. It is synthesized from glucose, approximately 10% sorbitol, and 1% citric acid. Polydextrose appears as white or nearly white solid particles, easily soluble in water with a solubility of 70%. Its chemical formula is (C6H10O5)n, and it is assigned the E number E1200.

So far, more than 50 countries have approved its use as a healthy food ingredient. As a functional food component, polydextrose possesses health benefits by supplementing the body's requirement for water-soluble dietary fiber. In food additives, it serves as a thickening agent, filler, and stabilizer. Polydextrose is a crucial ingredient for manufacturing low-calorie, low-fat, low-cholesterol, and low-sodium health foods.

Structure of Polydextrose

Polydextrose is a D-glucose oligomer formed by specific proportions of glucose, sorbitol, and citric acid. These raw materials are heated to a molten state and then vacuum-condensed to create a polymer. It has an average degree of polymerization (DP) of approximately 12, an average molecular weight of around 2000, and a molecular weight distribution ranging from 150 to 2000, predominantly connected by 1-6 glycosidic bonds. The compact and intricate structure of polydextrose effectively impedes mammalian metabolism and microbial breakdown, endowing it with low-calorie and anti-cavity functions.

Characteristics of Polydextrose

Water Solubility

Polydextrose is easily soluble in water, with a solubility of 70% at 25°C. It dissolves faster when heated, which is different from fiber fillers.

Stability

Polydextrose is highly stable, maintaining its stability for over 90 days when exposed to conditions at 25°C, 45°C, and 60°C. Even at temperatures around 200°C, it remains stable and does not react with acids or bases. Due to the hygroscopic nature of polydextrose powder, it requires proper packaging and storage under low humidity conditions.

Viscosity

Polydextrose solutions have a higher viscosity than sucrose solutions at equivalent concentrations. The viscosity of polydextrose solutions decreases with an increase in temperature, resembling the behavior of sucrose solutions. At 25°C, viscosity increases with the concentration of polydextrose.

Hygroscopicity

In environments with relatively high temperatures, solid polydextrose tends to absorb moisture.

Polydextrose can be used as a moisturizing agent for food. Taking baked goods as an example, polydextrose can delay the evaporation of water, thereby preventing product staleness and preserving or extending shelf life.

Uses of Polydextrose

In Dairy Products

Polydextrose, a water-soluble dietary fiber with health benefits, is commonly added to dairy products to enhance their nutritional and health-promoting properties while improving texture.

Polydextrose significantly promotes the proliferation of lactobacilli in yogurt, altering the product's texture and enhancing the milky flavor. It plays a role in promoting the growth of bifidobacteria, supplementing the nutritional and health benefits of yogurt, and elevating its overall quality.

In Beverages

Polydextrose is an ideal fiber source for fortifying fiber beverages. It boasts excellent water solubility, stability at low pH, and other favorable characteristics, making it widely applicable in beverage products. Additionally, it enhances the mouthfeel of sugar-free or low-sugar beverages.

In Baked Products

Polydextrose and alginose, when added to baked goods, can effectively replace sucrose. Substituting sucrose with these ingredients results in baked products with enhanced softness, improved moisture retention, and increased volume. The larger the proportion of substitution, the better the elasticity, and the lower the hardness. Therefore, polydextrose can substitute for sucrose in the production of low-calorie cakes without compromising the performance of the final product.

In Ice Cream

Polydextrose can replace a portion of the fat content in ice cream without significantly affecting its taste and texture, while noticeably reducing calorie content. Using polydextrose in functional ice cream formulations endows the product with health benefits without compromising taste and quality.

In Confectionery

Polydextrose serves as an excellent ingredient for sugar-free candies. It exhibits good tolerance, high water solubility, and viscosity, ensuring optimal chewiness in candies and making it suitable for promoting oral health. Adding polydextrose to candies can also reinforce fiber and reduce sucrose, contributing to lower calorie content.

In Health Supplements

Due to its relatively low-calorie content (1 kcal/g), polydextrose is suitable for producing low-energy, slimming, and weight-loss health foods or functional beverages.

FAQ About Polydextrose

Is Polydextrose the Same as Dextrose?

No, polydextrose is not the same as Dextrose. Dextrose is a simple sugar (glucose) often derived from corn and is a type of carbohydrate commonly used as a sweetener. On the other hand, Polydextrose is a complex carbohydrate and a soluble fiber compound. It is created through the polymerization of dextrose and sorbitol.

Is Polydextrose FDA Approved?

Yes, Polydextrose is approved by the U.S. Food and Drug Administration (FDA). It is recognized as a food ingredient that can be used for various purposes, including as a bulking agent, texturizer, and a source of dietary fiber in food products.

Is Polydextrose a Functional Fiber?

Yes, Polydextrose is considered a functional fiber. It is a soluble fiber that can be included in the diet to provide health benefits. Polydextrose is known for its ability to contribute to the dietary fiber content of food products, promoting digestive health and potentially offering other functional properties, such as serving as a prebiotic to support gut health.

About Polydextrose Supplier

CHEMSINO is a polydextrose supplier and manufacturer dedicated to producing food additives with high quality. We have the RSPO, Halal, Kosher, ISO22000, and ISO9001 certificates. Need polydextrose? Get in touch for pricing and free samples.