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Low temperature saccharification process for corn powder

A low-temperature saccharification and corn flour technology, which is applied in fermentation and other directions, can solve the problems of high production cost, high liquefaction temperature, and low starch conversion rate, and achieve the effects of improving the quality of saccharification products, reducing the liquefaction reaction temperature, and increasing the liquefaction reaction speed

Inactive Publication Date: 2007-01-24
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention is to propose a low-temperature saccharification process of corn flour in order to overcome the shortcomings of the above-mentioned technical starch conversion rate reduction, high production cost due to high liquefaction temperature, high energy consumption, and complicated process.

Method used

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  • Low temperature saccharification process for corn powder
  • Low temperature saccharification process for corn powder
  • Low temperature saccharification process for corn powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Example 1: Under the conditions of feed liquid pH 6.0-6.5, feed liquid concentration 10%, enzyme dosage 10U / g-corn flour raw material, and liquefaction temperature of 50°C, 60°C, and 70°C, medium-temperature α-starch was used Enzymes on commercially available corn flour (D 50 =273.6 μm) was liquefied, and changes in the DE value were investigated. The result is as figure 1 shown.

Embodiment 2

[0061] Example 2: Under the conditions of feed liquid pH6.0-6.5, feed liquid concentration 10%, enzyme dosage 10U / g-corn flour raw material, and liquefaction temperature of 30°C, 50°C, and 70°C, medium-temperature α-starch was used Enzyme on fine corn flour (D 50 =17.1 μm) was liquefied, and changes in the DE value were investigated. The result is as figure 2 shown.

Embodiment 3

[0062] Embodiment 3: Carry out reaction kinetics analysis to the change of DE value in embodiment 1 and embodiment 2. The result is as image 3 .

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PUM

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Abstract

The present invention relates to saccharification process, and is especially low temperature double enzyme corn powder saccharifying process. The technological scheme of the present invention includes dry or wet crushing corn in a planetary ball mill, and saccharifying corn powder or corn starch in a double enzyme process. The present invention describes the effects of material granularity, material liquid concentration, liquefying temperature, enzyme amount and other factors on the liquefying speed and glucose conversion rate, and develops low temperature corn powder saccharifying process. The present invention has lower liquefying temperature, low power consumption, high glucose conversion rate, well preservation of protein, fat, inorganic elements, vitamins and components in corn material, and simple technological process.

Description

Technical field: [0001] The invention relates to a double-enzyme saccharification process, in particular to a low-temperature double-enzyme saccharification process for corn flour. Background technique: [0002] Starch sugar can be made from any kind of starchy crops such as: rice, wheat, cassava, oats, sweet potatoes, potatoes, etc. Among them, corn is better for sugar production. This is because the cost of making sugar from cornstarch is relatively low, but the sugar yield is high, and the by-products produced by corn in the sugar making process are relatively concentrated, and its sugar making benefits are also high. [0003] Therefore, cornstarch sugar is widely used. As the main industrial raw material, it can be used in food sugar industry, fermentation industry, medicine, chemical industry and other industries. Specifically, corn starch sugar can be used in the food sugar industry to produce various starch sugars such as: maltose, dextrin, maltose, glucose, fructose...

Claims

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Application Information

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IPC IPC(8): C12P19/14
Inventor 缪冶炼吴琴燕夏发俊
Owner NANJING UNIV OF TECH
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