METHODS FOR EXTRACTING MANNOSE

• Main Authors: YAMADA HIROSHI, HARA YUKIKAZU, HAIGE RYOHEI, KITA YUSUKE
• Format: Patent
• Language: English; Japanese
• Published: 21.11.2019
• Subjects: CHEMISTRY; DERIVATIVES THEREOF; METALLURGY; NUCLEIC ACIDS; NUCLEOSIDES; NUCLEOTIDES; ORGANIC CHEMISTRY; SACCHARIDES, OTHER THAN SUCROSE, OBTAINED FROM NATURAL SOURCESOR BY HYDROLYSIS OF NATURALLY OCCURRING DI-, OLIGO- ORPOLYSACCHARIDES; SUGAR INDUSTRY; SUGARS

To provide methods for extracting high purity mannose quite easily by conducting two step hydrolytic treatment of vegetable materials.SOLUTION: Disclosed herein is a method for extracting mannose from a vegetable material comprising: a first hydrolysis step S1 where a vegetable material M1 and a first acid catalyst A1 being a weak acid or diluted strong acid are mixed and heated; a separation step S2 where a reaction product M2 obtained by the first hydrolysis step S1 is separated and recovered; and a second hydrolysis step S3 where the reaction product obtained by the separation step is mixed with a second acid catalyst S2 being a weak acid, diluted strong acid, strong acid or solid acid and heated.SELECTED DRAWING: Figure 1 【課題】植物系原料に、植物系原料に対して２段階の加水分解処理を施すことによって、極めて容易に高純度のマンノースを抽出可能とするマンノース抽出方法を提供する。【解決手段】植物系原料Ｍ１と弱酸又は希釈強酸の第１酸触媒Ａ１とが混合され加熱される第１加水分解工程Ｓ１と、第１加水分解工程により得られた反応生成物Ｍ２が分離回収される分離工程Ｓ２と、分離工程により得られた反応生成物と弱酸、希釈強酸、強酸又は固体酸の第２酸触媒Ａ２とが混合され加熱される第２加水分解工程Ｓ３とを経ることによって植物系原料中よりマンノースを抽出する。【選択図】図１