Method for subcritical water extraction of total polyphenol in sorghum bran

The invention discloses a method for subcritical water extraction of total polyphenol in sorghum bran, and belongs to the technical field of processing of food/agricultural products and byproducts thereof. The method comprises the following steps of taking the sorghum bran as a raw material, carrying out subcritical water extraction, carrying out separation/enrichment, carrying out elution, carrying out vacuum concentration, carrying out crystallization, carrying out drying and the like so as to obtain a sorghum bran polyphenol substance. The method for subcritical water extraction of the polyphenol in the sorghum bran has the advantages of being simple in technological process, convenient to operate, low in cost and suitable for efficient extraction of the polyphenol substance in all thefood/agricultural products and the processed byproducts thereof, waste, plants or Chinese herbal medicines. 本发明公开了种亚临界水萃取高粱麸皮中总多酚的方法，属于食品/农产品及其副产物的加工技术领域。该方法以高粱麸皮为原料，经亚临界水萃取、分离/富集、洗脱、减压浓缩、结晶和干燥等步骤得到高粱麸皮多酚类物质。本发明的亚临界萃取高粱麸皮多酚的方