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Method for preparing fructose syrup

A technology of fructose syrup and glucose glucoamylase, applied in the field of preparation of fructose syrup, can solve the problems of high preparation cost, large energy consumption, and large heat energy consumption, achieve product quality safety, reduce total energy consumption, and reduce production capacity consumption effect

Inactive Publication Date: 2013-01-16
ZHEJIANG HUAKANG PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method still adopts twice decolorization, and the second concentration in the whole process requires a lot of heat energy, the preparation cost is still high, and the existing technical problems of high preparation cost and high energy consumption have not been completely solved.

Method used

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  • Method for preparing fructose syrup
  • Method for preparing fructose syrup
  • Method for preparing fructose syrup

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 2 For the process flow diagram of the production of fructose syrup of the present embodiment, the detailed steps are as follows:

[0029] 1. Starch is prepared into starch milk of 18 degrees Baume (°Be'), and the concentration of 10% Na is 2 CO 3 The solution adjusts the pH value of the starch milk to 5.7-6.0. Calculated based on the dry matter of the starch milk, add 0.23kg / t α-amylase, spray and liquefy at a high temperature of 105-108°C, and hydrolyze for 15-30min until the DE value of the system liquid is 11%. Transport the reaction liquid to the flash tank (vacuum degree is 0.01MPa) to obtain a liquefied liquid at 58-60°C, and collect the waste heat of the flash steam (97°C) in the flash tank for later use;

[0030]2. Use 10% hydrochloric acid by mass to adjust the pH of the liquefied liquid to 4.2-4.4, add 0.36 kg / t of glucose glucoamylase according to the dry matter of the liquefied liquid, and carry out the saccharification reaction at 58-60°C ...

Embodiment 2

[0037] 1, the starch is mixed with the starch milk of 23 Baume degrees (°Be '), be 10% Na with mass percent concentration 2 CO 3 Adjust the pH value of the starch milk to 5.7-6.0 with the solution, add 0.35kg / t of α-amylase according to the dry matter of the starch milk, spray and liquefy at a high temperature of 105-108°C, and hydrolyze for 15-30min until the DE value of the system liquid is 11% , transport the reaction liquid to the flash tank (vacuum degree is 0.02MPa) to obtain a liquefied liquid at 58-60°C, and collect the waste heat of the flash steam in the flash tank (95°C) for standby;

[0038] 2. Adjust the pH value of the liquefied liquid to 4.2-4.4 with hydrochloric acid with a concentration of 10% by mass, add 0.36kg / t of glucose glucoamylase according to the dry matter of the liquefied liquid, and carry out the saccharification reaction at 60-62°C, and the saccharification time After 28 hours, when the DX value of the feed liquid reaches 98%, the material is dis...

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Abstract

The invention discloses a method for preparing fructose syrup. The method includes the steps: preparing starch milk, adding alpha-diastase, performing spray liquefaction and hydrolysis reaction, flashing reaction liquid to obtain liquefied liquid and collecting waste heat of flash steam; adding glucose saccharifying enzyme into the liquefied liquid, sequentially filtering saccharified materials by organic membranes, desalting the materials by means of ion exchange and evaporating and concentrating the materials to obtain reaction liquid with the refractive index of 38-45%; and isomerizing the reaction liquid by glucose isomerase, desalting the reaction liquid by means of ion exchange, discoloring the reaction liquid and evaporating and concentrating the reaction liquid by means of MVR (mechanical vapor recompression) to obtain the fructose syrup. Heat for evaporation and concentration is provided by the waste heat of the flash steam. The organic membranes are used for deproteinization and filtration, one time of discoloration is decreased, consumption of activated carbon is reduced, and the service cost of the fructose syrup is saved. The heat needed for one-time evaporation and concentration is provided by the waste heat of the flash steam, live steam is not consumed, total energy consumption is reduced, and invested production cost is further reduced.

Description

technical field [0001] The invention relates to the technical field of food additives, in particular to a preparation method of fructose syrup. Background technique [0002] Fructose syrup is a starch sugar crystal made by hydrolysis and isomerization of plant starch, and is an important sweetener. Because its composition is mainly fructose and glucose, it is called "fructose syrup". Fructose syrup is a saccharification solution obtained by enzymatic saccharification of starch. After the isomerization of glucose isomerase, part of the glucose is isomerized into fructose. It is a mixed sugar syrup composed of glucose and fructose. Fructose syrup mainly includes F42 fructose syrup, F55 fructose syrup and F90 fructose syrup, among which F stands for fructose, and the numbers after it represent the percentage of fructose content in dry matter. Fructose syrup with a fructose content of 42%, expressed as F42, has a solid content of about 71%, and its sweetness is close to that o...

Claims

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Application Information

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IPC IPC(8): C12P19/24C12P19/20C12P19/14
CPCY02P20/129
Inventor 方顺成陈德水程新平廖承军黄钱威
Owner ZHEJIANG HUAKANG PHARMA
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