Abstract: The method of the present invention for producing cellulose nanofiber from almond seed coat includes alkali cooking a food manufacturing by-product containing plant fiber with an alkali acceptable for food use, washing the object, bleaching the pulp component containing cellulose and hemicellulose thus obtained using a chemical acceptable for food use, washing the object with water, and mechanically fibrillating and grinding the pulp component obtained above, thereby obtaining cellulose nanofiber. The present invention allows efficient production of highly safe cellulose nanofiber from a food manufacturing by-product as a raw material, or almond seed coat acceptable for food use.

Abstract: A method for manufacturing peeled nuts includes: freezing shelled raw material nuts rapidly in a temperature condition of ?50° C. or lower; peeling off thin seed coats from the nuts through an agitating or crushing process, in a state in which frozen nuts are frozen as are; and separating and removing the thin seed coats from the nuts in a low-temperature condition in which re-attachment of the thin seed coats to the thin seed coat-peeled nuts does not occur, and obtaining the peeled nuts. In such a configuration, it is possible to efficiently manufacturing high-quality peeled nuts without a damage to an original flavor of the nuts, with little mixing of the seed coats generated through decoating with the decoated nuts, and without the nuts being crushed into too small pieces.