REFINED PRODUCT OBTAINED FROM RICE HULL AND PREPARATION PROCESS AND USE THEREOF

摘要

Disclosed herein is a refined product obtained from a rice hull, which consists essentially of a type II arabinogalactan having a number average molecular weight in the range of 56 to 103 kDa. Also disclosed are a process for producing the refined product and use of the refined product for enhancing the biological activity of innate immune cells, as well as for treating allergy and cancer.

主权项

1. A refined product obtained from a rice hull, wherein the refined product is produced by a process comprising the steps of:
subjecting a rice hull to extraction with an aqueous solution so as to obtain an aqueous extract; admixing the aqueous extract with a first alcohol so as to obtain a first precipitate; subjecting the first precipitate to an enzymatic hydrolysis treatment so as to obtain an aqueous enzymatic hydrolysate, the enzymatic hydrolysis treatment employing an aqueous composition containing α-amylase, protease, and amyloglucosidase; admixing the aqueous enzymatic hydrolysate with a second alcohol so as to obtain a second precipitate; and refining the second precipitate by anion exchange chromatography, such that the refined product thus obtained consists essentially of a type II arabinogalactan having a number average molecular weight in the range of 56 to 103 kDa.