The invention discloses an intragastric swelling satiety gel block with a double-layer structure, and relates to the technical field of functional foods. The gel block is formed by compounding an outer-layer soft gel layer and an inner-layer hard gel core, and is prepared by taking food-grade
chitosan and
sodium tripolyphosphate (TPP) as main raw materials through ionic crosslinking, the
mass ratio of
chitosan to
sodium tripolyphosphate in the outer layer is 10: 1-12: 1, the texture is soft and smooth, and a food-grade
flavor regulator can be added to form various tastes; the
mass ratio of the
chitosan to the
sodium tripolyphosphate in the inner layer is 3: 1-4: 1, the texture is hard, and
gastric acid erosion is resisted. Through a double-layer differentiated structure and proportion design,
swallowing smoothness,
stomach comfort, taste diversity and a long-acting satiety effect are considered, physical occupation can be realized in the
stomach to prolong the satiety, the raw materials are safe and degradable, no
medicine is added, and the food is suitable for people with diet control,
weight management and
stomach care and has a wide application prospect. The technical problems that a traditional single-layer satiety product is single in taste, and experience and
efficacy are difficult to consider at the same time are solved.