Chitosan oligosaccharide chelated copper and preparation method thereof
A technology of chitosan oligosaccharides and chelated copper, which is applied in food preparation, food science, animal feed, etc., and can solve the problems of low utilization rate of inorganic copper, pollution, waste, etc.
Inactive Publication Date: 2010-06-09
LIAONING NORMAL UNIVERSITY
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Problems solved by technology
A large number of studies have proved that adding high doses of copper to the feed can significantly promote the growth of animals, but the utilization rate of inorganic copper is too low, so 90% of the copper is excreted in the feces, which is not only a serious waste but also a serious pollution
However, there is no relevant report on the preparation of chitooligosaccharide chelated copper by using chitooligosaccharide and inorganic copper as raw materials.
Method used
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[0014] The preparation method of chitosan oligosaccharide chelated copper provided by the present invention will be further illustrated by examples below.
[0015] Weigh 1g of chitosan oligosaccharide and 0.5g of copper sulfate into a beaker respectively, add 50ml of distilled water and stir to dissolve, then mix the two solutions in equal volume, stir well and adjust the pH value to 6.0- 7.0, after a few minutes of chelation, suction filtration, and rinse with distilled water 1-5 times to remove the residual filtrate, put the precipitate in an oven at 70°C for 5-6 hours to remove water and get a green powdery solid. Oligochitosan chelates copper.
[0016] Tests have proved that chitosan oligosaccharide chelated copper is insoluble in water and common organic solvents (including: methanol, ethanol, ether, acetone).
[0017] figure 1 Shown, measured by infrared spectroscopy about 600cm -1 at -NH 2 The absorption peak becomes weaker obviously, indicating that -NH in the chit...
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The invention discloses chitosan oligosaccharide chelated copper and a preparation method thereof. Currently, reports about the chitosan oligosaccharide chelated copper prepared by interaction of chitosan and copper sulfate have not been seen. According to the method, the chitosan oligosaccharide chelated copper is prepared, and the optimal reaction conditions for preparing the chitosan oligosaccharide chelated copper is determined. The chitosan oligosaccharide chelated copper can improve the utilization rate of copper and reduces toxicity of the copper, and is expected to have important application value in the field of foods and feed additives. The chitosan oligosaccharide chelated copper and the preparation method thereof have the advantages of simple equipment, easily controlled operating condition, low production cost, and high conversion rate of the prepared chitosan oligosaccharide chelated copper.
Description
technical field [0001] The invention relates to chitosan oligosaccharide chelated copper and a preparation method thereof. Background technique [0002] Copper is an essential trace element for human and animal organisms. It is a component of some important enzymes or is related to the activity of enzymes. It has functions such as participating in hemoglobin synthesis, affecting lipid and protein metabolism, and maintaining the integrity of cardiovascular structures. A large number of studies have proved that adding high doses of copper to feed can significantly promote animal growth, but the utilization rate of inorganic copper is too low, so 90% of copper is excreted in feces, which is not only a serious waste but also serious pollution. In recent years, many reports have shown that amino acid metal chelates can significantly improve the utilization of metal elements. Chitosan oligosaccharide (Chitosan oligosaccharide), also known as chitosan oligosaccharide, scientific n...
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Login to View More IPC IPC(8): C08B37/08A23L1/304A23K1/175
Inventor 王秀武王卓姜云霞
Owner LIAONING NORMAL UNIVERSITY