公开(公告)号：KR101237880B1

公开(公告)日：2013-02-27

申请号：KR1020120052902

申请日：2012-05-18

Applicant: 충남대학교산학협력단

Inventor： 강석구 ,  서영범

IPC: C12P7/56 ,  C12N1/20 ,  C12N1/12

CPC classification number: C12P7/56 ,  C08G63/08 ,  C08G63/78 ,  C12Y302/01081

Abstract: PURPOSE: A method for using RA(Red Algae) for preparing RA-PLA(Polylactic Acid) is provided to reduce the number of processes without a pretreatment process and to save preparation cost. CONSTITUTION: A method for preparing RA-PLA comprises: a step of washing red algae with water and dehydrating; a step of dipping the dehydrated red algae in a solvent for a predetermined length of time and extracting the same; a step of separating the extract into a liquid phase extract and solid powder and saccharifying the liquid phase extract into monosaccharides; a step of fermenting the monosaccharides into lactic acid by using fermentation bacteria; a step of isolating and collecting the lactic acid; a step of dehydrating the lactic acid and forming lactide; and a step of performing a ring-opening polymerization using a catalyst and synthesizing RT-PLA. [Reference numerals] (AA) Red algae; (BB) Washing the red algae; (CC) Extraction(60-460°C); (DD) Saccharifying extracted liquid; (EE) Lactic acid fermenting galactose and other saccharides; (FF) Separately collecting lactic acid; (GG) Forming lactide; (HH) Forming RA-PLA

Abstract translation: 目的：提供RA（红藻）制备RA-PLA（聚乳酸）的方法，以减少没有预处理过程的工艺数量，节省制备成本。 构成：制备RA-PLA的方法包括：用水洗涤红藻和脱水的步骤; 将脱水的红藻在溶剂中浸渍预定时间并提取该步骤; 将提取物分离成液相提取物和固体粉末并将液相提取物糖化为单糖的步骤; 通过使用发酵细菌将单糖发酵成乳酸的步骤; 分离和收集乳酸的步骤; 使乳酸脱水并形成丙交酯的工序; 以及使用催化剂进行开环聚合并合成RT-PLA的步骤。 （附图标记）（AA）红藻; （BB）洗红藻; （CC）萃取（60-460℃）; （DD）糖化提取液; （EE）乳酸发酵半乳糖等糖类; （FF）分别收集乳酸; （GG）形成丙交酯; （HH）形成RA-PLA