A novel food ingredient combining functional improvement and nutritional fortification, containing both soluble and insoluble fiber fractions. It forms a three-dimensional network structure, offering pectin-like thickening and gelling capabilities along with water-holding and suspension properties of insoluble fiber. Directly enhances dietary fiber content in foods, supporting “high-fiber, low-fat, low-sugar” health claims to meet consumer demand for nutritious foods. Widely applied in dairy products, beverages, bakery, and other production categories.