Processing method of konjac refined flour

Abstract

The invention discloses a processing method of konjac refined flour. A process comprises the following steps: fresh konjac corm cleaning, peeling, slicing, color protecting, crushing, desolventizing purifying, washing, drying, dry-grinding, screening, homogenizing, examining, packing and storing; according to an operation key point, during grinding, konjac flour and an ethanol solution are mixed according to a certain ratio, and are placed in a grinding wheel mill for grinding, the purpose of the operation key point is to grind out impurities on surfaces of refined flour particles, the final concentration of ethanol used for liquid medium selection during separation is better not be lower than 30%, the ethanol solution with the concentration higher than 30% is used for washing the konjac refined flour particles in a filter screen, and then centrifugation separation is conducted. According to the processing method of the konjac refined flour, after ethanol washing and filter pressing are conducted, the content of the impurities in the konjac refined flour is reduced, and the property of the konjac refined flour in aspects of color and lustre, solubility, viscosity, purity and the like is improved.

Description

technical field [0001] The invention relates to a processing method of konjac powder. Background technique [0002] Konjac, also known as Konjac, is a perennial herbaceous plant belonging to the family Asteraceae. Konjac is rich in various amino acids, crude protein and trace elements. The content of 16 kinds of amino acids is more than 7.8%, of which the total amount of 7 kinds of essential amino acids is 2.5%, and the content of crude protein is more than 9.7%. It also contains magnesium, iron and calcium. , potassium, sodium, manganese, copper and other trace elements. In particular, konjac is one of the few tuber crops rich in glucomannan (Konjac Mannan). [0003] The main component of konjac is glucomannan, which is the substance with the largest molecular weight in natural plants. It has dozens of physical and chemical properties such as water solubility, thickening, gelling, film forming, bonding, stability, and suspension. It is used in food It is widely used in t...

AI Technical Summary

Problems solved by technology

Moreover, the impurity content in konjac powder is high, which will reduce the dissolution rate of konjac powder

Chinese Patent Publication No. CN101836718A discloses a process for producing konjac powder by wet method. Research shows that drying konjac powder for a long time at high temperature will cause the dissolution rate of konjac powder to be too slow and the impurity content of this method is high. The konjac powder produced low powder value

Chinese Patent No. 99114668.9 is a method for producing konjac fine powder using water as a medium and adopting sulfite color protection. The konjac fine powder produced by this method has a high impurity content and will cause excessive sulfur dioxide in the product

Chinese Patent Publication No. CN101347218B discloses a processing method for producing konjac powder by inactivating polyphenolase by microwave heating. The quality of konjac powder produced by this method is difficult to control and has high impurity content

[0007] At present, the supply of konjac series products in the market is in short supply, the market is good, and the price is high

However, the existing preparation method has the problems of low powder yield and purity, and there is no report identical with the technology of the present invention after inquiry.