Abstract: After whey protein concentration and recovery by ultrafiltration, the lactose in the permeate is further concentrated by nanofiltration, resulting in a retentate used as a substrate for enzymatic production of GOS by a ?-galactosidase enzyme. A GOS ingredient is obtained, characterized by having between 30 and 95% of GOS, which could improve the organoleptic properties (in terms of texture and flavor) of the products in which it is applied, and also giving it prebiotic properties.

Abstract: A prebiotic carbohydrate composition is described comprising POS and galacturonic acid from fruit peel that can be used as an ingredient for the formulation of food products. The prebiotic carbohydrate composition is useful as a replacement for conventional sugars, maintaining the rheological characteristics of the product (texturizer) without increasing its caloric content. Moreover, the carbohydrate composition has bioactive potential, antioxidant capacity, and prebiotic properties.