Method for preparing fructose from glucose
A technology for glucose and fructose, applied in the preparation of sugar derivatives, chemical instruments and methods, monosaccharides, etc., can solve the problems of mass production constraints, environmental pollution, and high requirements for reaction equipment, and achieve improved conversion efficiency, high economic benefits, and operation. handy effect
Active Publication Date: 2017-01-18
山东天久生物技术有限公司
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Embodiment 1
[0021] Put 3g of glucose, 0.15g of tungsten chloride and 60g of ethanol in an intermittent high-pressure reactor, then close the reactor and control the reaction temperature at 100°C for 0.5h. After the reaction, cool the reaction solution and use high-efficiency liquid Phase chromatographic analysis (see the high performance liquid chromatogram figure 1 ), the results showed that the yield of fructose was 37.2%.
Embodiment 2
[0023] According to the method of Example 1, the yield of fructose is 37.6%, the difference is that the reaction time is extended to 2h.
Embodiment 3
[0025] Carry out according to the method of embodiment 2, the yield of fructose is 32.3%, difference is that reaction temperature is changed into 80 ℃.
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The invention discloses a method for preparing fructose from glucose. According to the method, in the presence of an acid catalyst and low carbon alcohol, glucose undergoes an isomerization reaction in a closed high-pressure environment so as to prepare fructose, wherein the acid catalyst is one or more ingredients selected from a group consisting of tungsten salt, aluminium salt, chromium salt, phosphotungstic acid and silicotungstic acid. The method has advantages of mild condition, simple process and high conversion efficiency.
Description
technical field [0001] The present invention relates to the isomerization of monosaccharides, in particular to a method for producing fructose from glucose. Background technique [0002] Glucose, as the most important monosaccharide in nature, is rich in sources and widely exists in cellulosic plants, such as corn, sugar beet, sweet potato, etc. These plants produce glucose through photosynthesis. The industrial production of glucose mainly uses amylase and glucoamylase to degrade starch or cellulose. There is great promise in converting low-cost glucose into higher-value fine chemicals, such as fructose. Fructose has high application value and can be used in fructose syrup preparation, food industry and energy fuel precursors and other fields. [0003] At present, the industrial production of fructose mainly comes from the enzymatic hydrolysis of sucrose to obtain a mixed solution of fructose and glucose, which is finally separated and purified to obtain fructose crystals...
Claims
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Login to View More IPC IPC(8): C07H1/00C07H3/02
CPCC07H1/00C07H3/02
Inventor 章青李路微李兵沈培友周双六商永嘉
Owner 山东天久生物技术有限公司