Abstract: The present invention discloses a functionalized fiber material treated with a emulsion containing an ascorbic acid derivative which is hardly soluble in water, wherein the ascorbic acid derivative which is hardly soluble in water is preferably tetraalkylester of L-ascorbic acid. Said treatment method comprises treating a fiber material with an emulsion comprising a mixture of an ascorbic acid derivative which is hardly soluble in water, an anionic surfactant or a combination of an anionic surfactant and a nonionic surfactant, and water, wherein a concentration of the ascorbic acid derivative which is hardly soluble in water is 0.05 to 10 % by weight. The functionalized fiber material of the present invention enables a sustained discharge of the active ingredient without losing the moisture absorption and release properties possessed by the fiber.

Abstract: The present invention aims at providing a functionalized fiber material having a skin care effect enabling to sustainedly discharge a skin care component by an action of a fat and oil component such as sebum present on a skin surface of the human body, without losing a feeling or moisture absorbing and releasing properties which are possessed by a fiber. The functionalized fiber material is obtained by treating a fiber material comprising natural fiber, regenerated fiber, synthetic fiber and mixed fibers thereof with a treatment liquid in which &agr;-tocopherol acetate is emulsified in water with a surfactant, and &agr;-tocopherol acetate is stuck in an amount of 0.3 to 45.0 mg. A concentration of &agr;-tocopherol acetate in the emulsified liquid for the fiber treatment is preferably 0.5 to 100.0 g/l.

Abstract: A method for manufacturing improved regenerated cellulose fiber, by adding a crosslinking agent having two or more reactive functional groups in a molecule to a cellulose viscose solution and mixing, then extruding the viscose solution into a coagulation and regeneration bath, followed by applying a heat treatment, or followed by contacting obtained regenerated cellulose fiber with an aqueous solution of a crosslinking agent having two or more reactive functional groups in a molecule then applying a heat treatment.

Abstract: The present invention aims at providing a functionalized fiber material having a skin care effect enabling to sustainedly discharge a skin care component by an action of a fat and oil component such as sebum present on a skin surface of the human body, without losing a feeling or moisture absorbing and releasing properties which are possessed by a fiber.

Abstract: The present invention discloses a functionalized fiber material treated with a emulsion containing an ascorbic acid derivative which is hardly soluble in water, wherein the ascorbic acid derivative which is hardly soluble in water is preferably tetraalkylester of L-ascorbic acid. Said treatment method comprises treating a fiber material with an emulsion comprising a mixture of an ascorbic acid derivative which is hardly soluble in water, an anionic surfactant or a combination of an anionic surfactant and a nonionic surfactant, and water, wherein a concentration of the ascorbic acid derivative which is hardly soluble in water is 0.05 to 10 % by weight. The functionalized fiber material of the present invention enables a sustained discharge of the active ingredient without losing the moisture absorption and release properties possessed by the fiber.

Abstract: A method for manufacturing improved regenerated cellulose fiber, by adding a crosslinking agent having two or more reactive functional groups in a molecule to a cellulose viscose solution and mixing, then extruding the viscose solution into a coagulation and regeneration bath, followed by applying a heat treatment, or followed by contacting obtained regenerated cellulose fiber with an aqueous solution of a crosslinking agent having two or more reactive functional groups in a molecule then applying a heat treatment.

Abstract: A cellulose fabric having a sebum absorbing performance, which maintains its performance even after repeated washing in which a compound having a nonionic surface activity is fixed to a cellulose fabric. A sebum absorbing cellulose fabric is prepared by treating a cellulose fabric with an aqueous mixed solution of a nonionic surfactant and a cross-linking agent having glycidyl ether groups, or by treating a cellulose fabric with an aqueous solution of a glycidyl ether having a nonionic surface activity in the molecule thereof.

Abstract: The present invention relates to a method for separating and concentrating acidic peptide, especially phosphopeptide having a phosphoserine residue, from a peptide mixture prepared by digesting casein with protease.