Sulfur-free synthetic processing wet method of konjac refined powder

Abstract

The present invention discloses a sulfur-free synthetic processing wet method of konjac refined powder and belongs to the technical field of agricultural and sideline product processing. The method is characterized in that produced clarified waste alcohol in the previous technology processes is collected without evaporation, alcohol degree is adjusted, the collected alcohol is directly used for extraction of the refined flour, edible citric acid is added into the clarified waste alcohol used for a first time beating and extracting the refined powder, the used waste liquid of the extraction of the refined powder is stirred, the stirred waste liquid is placed, the placed waste liquid is extracted and the extracted wastes liquid is separated to obtain wet ash powder and the clarified waste alcohol, the clarified waste alcohol is used to extract konjac skin residues to extract konjac alkaloid, the alkaloid extract is vacuum concentrated, at the same time, the alcohol is recovered, the alkaloid is subjected to an alcohol precipitation and clarifying during the concentration period of the alkaloid extract. The vacuum technology is used to conduct desolvation and drying of the products, and at the same time, the alcohol is recovered. The obtained refined powder is free of sulfur residues, safe and hygienic. The quality of the refined powder is superior to that of the requirements of special-grade products at national standards. The obtained by-products are low in ash content and alkaloid content, and free of stink odor.

Description

technical field [0001] The invention belongs to the technical field of agricultural and sideline product processing, and relates to a sulfur-free wet comprehensive processing method of konjac fine powder. Background technique [0002] At present, the deep processing of konjac in China mainly focuses on konjac fine powder, that is, the extraction of glucomannan. The processing of konjac powder mainly includes dry method and wet method, among which the konjac powder processed by wet method is of good quality and is very popular among users. However, the wet process currently used in China has the following defects: ① Most of them use sulfur-containing reagents such as sodium sulfite to protect the color, resulting in high sulfur residues in the product and low safety, which affects the application of the product. Although there are a variety of sulfur-free color protection technologies, most of them use chemical reagents such as ascorbic acid (sodium), L-cysteine, phytic acid...

AI Technical Summary

Problems solved by technology

However, the wet process currently used in China has the following defects: ① Most of the sulfur-containing reagents such as sodium sulfite are used to protect the color, resulting in high sulfur residues in the product and low safety, which affects the application of the product

Although there are also processing techniques using water as the medium, either the operation requirements are high and difficult, or harmful chemical reagents such as borates are used, which reduces the safety and use of the product; ③Alcohol recovery is difficult and consumes a lot of energy; ④Engineering High construction and production costs