| abstract |
The present invention discloses the dietary fiber which is extracted from a bran with an aqueous solvent at 170 to 220°C, containing, as its principal ingredient, a water soluble and hardly digestible polysaccharides rich in .beta.-glucose, being novel distinct from a conventional dietary fiber which is produced by extraction of a bran with an aqueous solvent at a temperature below 170°C, having tumor growth inhibiting activity, Lactobacillus bifidus proliferating activity, cholesterol metabolism improving activity and immunologic response enhancing activity, being quite safe to animals as well as to humans, which can be beneficial when utilized as an active component of a pharmaceutical composition or a dietary composition, and a manufacturing method of such dietary fiber and the physiological active substances utilizing such dietary fiber. |