PROBLEM TO BE SOLVED: To provide fermentation-derived cellulose or a purification method of the same in which fermentation-derived cellulose or a pharmaceutical preparation of the same is excellently deodorized and decolored to a level to be used as a cosmetic, and purified fermentation-derived cellulose or a pharmaceutical preparation of the same which is excellently deodorized and decolored to a level to be used as a cosmetic.SOLUTION: A purification method of fermentation-derived cellulose or a pharmaceutical preparation of the same comprises: a step X of obtaining a bleaching mixture solution of fermentation-derived cellulose or a pharmaceutical preparation of the same which contains fermentation-derived cellulose or a pharmaceutical preparation of the same, an organic solvent, and a bleaching agent a step C of filtering the bleaching mixture solution obtained by the step X to obtain bleached fermentation-derived cellulose or a pharmaceutical preparation of the same and a step D of collecting purified fermentation-derived cellulose or a pharmaceutical preparation of the same from the bleached fermentation-derived cellulose or the pharmaceutical preparation of the same obtained by the step C. The volume ratio of the organic solvent to water (the organic solvent/water) in the bleaching mixture solution obtained by the step X is 35/65 to 100/0.COPYRIGHT: (C)2014,JPO&INPIT【課題】化粧料として用いることが可能な程度まで良好に発酵セルロース又は発酵セルロース製剤を脱臭及び脱色することができる発酵セルロース又は発酵セルロース製剤の精製方法、及び、化粧料として用いることが可能な程度まで良好に脱臭及び脱色された精製発酵セルロース又は精製発酵セルロース製剤を提供する。【解決手段】発酵セルロース又は発酵セルロース製剤と、有機溶媒と、漂白剤とを含む発酵セルロース又は発酵セルロース製剤の漂白剤混合液を得る工程Xと、前記工程Xで得られた漂白剤混合液をろ過して漂白された発酵セルロース又は発酵セルロース製剤を得る工程Cと、前記工程Cで得られた漂白された発酵セルロース又は発酵セルロース製剤から精製発酵セルロース又は精製発酵セルロース製剤を回収する工程Dと、を含み、前記工程Xにおいて得られる漂白剤混合液の、有機溶媒と水との体積比が、有機溶媒/水=35/65~100/0である発酵セルロース又は発酵セルロース製剤の精製方法。【選択図】図1
