Preparation method of feed additive tryptophane copper complex
A feed additive, copper tryptophan technology, applied in organic chemistry and other directions, can solve the problems of difficult control of the reaction process, low yield, low purity, etc., achieve stable reaction, improve yield and purity, and improve yield and purity Effect
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Embodiment 1
[0024] Select 0.2 moles of tryptophan and add it to 500 ml of deionized water, add sodium hydroxide, stir to completely dissolve the tryptophan, adjust the pH to 7.6, and then heat to 80°C; add 0.105 moles of copper chloride to 80 ml of deionized water until completely dissolved.
[0025] Keep the tryptophan solution at a constant temperature; under continuous stirring, add the copper chloride solution dropwise to the tryptophan solution, and control the rate of addition to complete the dropwise addition within 0.5 h; then cool down to 32°C. The reaction solution is taken out and centrifuged; then dried, pulverized, and packaged into a finished product. The finished product yield is 97.64%, and the purity is 98.87%.
Embodiment 2
[0027] Select 0.2 moles of tryptophan and add it to 500 ml of deionized water, add sodium hydroxide, stir to completely dissolve the tryptophan, adjust the pH to 7.9, and then heat to 89°C; add 0.11 moles of copper chloride to 70 ml of deionized water water until completely dissolved.
[0028] Keep the tryptophan solution at a constant temperature; under continuous stirring, add the copper chloride solution dropwise to the tryptophan solution at a rate of 3ml / min; Complete; then cool down to 38°C. The reaction solution is taken out and centrifuged; then dried, pulverized, and packaged into a finished product. The finished product yield is 97.71%, and the purity is 99.06%.
Embodiment 3
[0030] Select 0.2 moles of tryptophan and add it to 400 ml of deionized water, add sodium hydroxide, stir to completely dissolve the tryptophan, adjust the pH to 8, and then heat to 96°C; add 0.12 moles of copper chloride to 40 ml of deionized water water until completely dissolved.
[0031] Keep the tryptophan solution at a constant temperature; under continuous stirring, add the copper chloride solution dropwise to the tryptophan solution at a rate of 2ml / min; Complete; then cool down to 22°C. The reaction solution is taken out and centrifuged; then dried, pulverized, and packaged into a finished product. The finished product yield is 98.29%, and the purity is 99.19%.
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