Dry konjac flying powder detoxification method

Abstract

The invention discloses a dry konjac flying powder detoxification method, and relates to the technical field of processing of subsidiary agricultural products. The dry konjac flying powder detoxification method comprises the following steps of performing detoxification: performing leaching on dry konjac flying powder with edible alcohol under a certain condition to remove anti-nutritional factorsand substances in peculiar smell in the konjac flying powder; drying the detoxified wet konjac flying powder, and performing crushing; passivating the obtained extracting solution, and concentrating the passivated extracting solution; and recovering the alcohol. Through adoption of the dry konjac flying powder detoxification method disclosed by the invention, the dry konjac flying powder can be utilized as an animal feed or raw materials for food processing; besides, the detoxification of the dry konjac flying powder and the recovery of konjac alkaloid are realized, and the productive rate ofthe detoxified konjac flying powder is 80% or above; a three-stage countercurrent soaking extraction technology is adopted, so that the detoxification effect on the konjac flying powder is improved, the recovery rate of the konjac alkaloid is increased, the consumption of the edible alcohol is reduced, and the removal rate of the konjac alkaloid can be 90% or above; the whole detoxification process is performed under natural pH and ordinary pressure, and solution pH does not need to be adjusted, so that operation is simplified; and any chemical reagents are not used during production, so thatsafety is high, and the emission of waste gas, waste water and industrial residues is avoided.

Description

1. Technical Field [0001] In the technical field of agricultural and sideline product processing, specifically, the present invention is a method for detoxification of dry konjac fly powder. 2. Background technology [0002] The processing of konjac in my country is still mainly based on the extraction (or separation) of konjac flour (glucomannan). During the processing of dry konjac flour, a large number of by-products-konjac fly flour (also called konjac ash powder) will be produced. , Accounting for 30% to 40% of the output of konjac flour, and the annual output of konjac flour in my country is 1500-2000t. Konjac fly noodles are rich in nutrients, such as about 20% protein and 40% starch. However, konjac fly noodles also contain anti-nutritional factors and odor substances, such as trimethylamine, alkaloids, tannins, camphor, and α. -Pinene, etc., which give it a foul smell and spicy taste, poor palatability, and poisonous and harmful to animals. According to reports, Enshi a...

AI Technical Summary

Problems solved by technology

[0003] The present inventor Zhang Zhijian et al found in the research process that there are a large amount of water-soluble components in konjac and konjac powder, such as reducing sugar, free amino acid, konjac glucomannan, etc., in low concentration alcohol, acidified low concentration alcohol, water and acidified During water extraction, these substances will all dissolve, and the amount of glucomannan dissolved under heating conditions (even if only 30°C) will be more, making the extract into a colloidal solution, which will inevitably cause the loss of nutrients and reduce the The nutritional value of detoxified konjac fly powder, and the processing of the resulting extract is difficult