Processing method of konjac refined powder

Abstract

The invention provides a technology for processing konjac refined powder through combination of microwave vacuum drying, inert-gas protection microwave heating for inactivating enzyme activity, and adry-wet method. The technology comprises the processing flows of preparing konjac, performing cutting, performing color protection, performing microwave vacuum drying, stopping inflating inert gas ina vacuumizing sealing container, performing microwave heating, performing heat insulating, stopping microwave heating vacuumizing for quick cooling, performing crushing, performing filtering separation, performing washing and performing drying to obtain products. The advantages of microwave and vacuum drying are sufficiently used, the konjac is quickly and uniformly pre-dried under anoxia and non-high-temperature state, and the dosage of alcohol during subsequent wet-method processing can be reduced doubly; and the measures of adopting inert-gas protection and microwave heating for rapidly inactivating the enzyme activity of polyphenols in the konjac, so that the generation of enzymatic browning in the subsequent processing is avoided. When the konjac is processed according to the technology, low-sulfur or sulfur-free high-viscosity konjac refined powder can be prepared, and besides, the processing cost can be substantially reduced.

Description

technical field [0001] The invention relates to a processing method of food raw materials, in particular to a process for processing konjac fine powder by adopting microwave vacuum drying, inert gas protection microwave heating to inactivate enzyme activity, and combining dry and wet methods. Background technique [0002] Konjac, also known as konjac, grinding taro, flower stalk lotus, hemp taro, snakehead grass, flower stalk Aracea, etc., is a perennial herbaceous plant of the genus Konjac in the Araceae family. Konjac is a food with low calorie, low protein, low vitamin and high dietary fiber, which is an effective nutrient. Konjac is the most excellent deep-dive dietary fiber found so far, and the main active ingredient in konjac powder obtained from konjac through physical processing is glucomannan. Studies in recent years have proved that the glucomannan contained in konjac has a good effect on reducing blood sugar in diabetics. Because of its large molecular weight an...

AI Technical Summary

Problems solved by technology

Due to the long puffing time, the residual amount of harmful substances is easy to exceed the standard, and the foreign trade export is affected to a certain extent