Method and device for continuously extracting starch in corn fiber skin by enzymic method
A corn fiber and continuous technology, applied in the field of enzymatic continuous extraction of starch from corn fiber husks, can solve the problems of high energy consumption, impossibility of industrial application, high processing cost, etc., achieve high concentration, good application and promotion prospects, and high extraction efficiency Effect
Active Publication Date: 2012-10-03
SHANDONG LUZHOU FOOD GROUP +1
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Abstract
The invention relates to a method and a device for continuously extracting starch in corn fiber skin by an enzymic method. The device comprises a motor, an extraction barrel, a screw conveyer bar and a storage tank, wherein the screw conveyer bar is arranged in the extraction barrel, and a hydrolysate outlet is communicated with the storage tank. The method comprises the following steps of: (1) preparing an extracting solution; (2) carrying out backward motion contact on the corn fiber skin and the extracting solution to hydrolyze starch in the corn fiber skin; and (3) when the content of the starch in corn fiber skin residues is larger than 1.5 wt%, regulating through reducing the feeding speed of the corn fiber skin, prolonging the hydrolysis time and/or improving the hydrolysate adding speed; and when the DE (Dextrose Equivalent) value of the hydrolysate is smaller than 15%, regulating through reducing the feeding speed of the corn fiber skin, prolonging the hydrolysis time and/or improving the amylase concentration of the extracting solution. The stable and continuous extraction of the starch in the corn fiber skin is realized by the method provided by the invention, the extraction efficiency is high, and the yield is high; and the hydrolysate concentration is high, which is as high as 3-5 times of intermittent extraction concentration.
Application Domain
Enzyme production/based bioreactorsFermentation +1
Technology Topic
Dextrose equivalentEnzyme +6
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PUM
Property | Measurement | Unit |
Upper mouth diameter | 0.55 | m |
Lower mouth diameter | 0.8 | m |
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