A kind of method that prepares nano-silver aqueous solution with modified glucose
A technology of glucose and nano-silver, which is applied in the field of preparation of nano-silver colloidal solution, can solve problems such as uneven distribution, uneven particle size, and high preparation cost, and achieve high human safety, low human irritation, and good medical value Effect
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Embodiment 1
[0018] 1. Dissolve 5g of 2-(3-carboxy-1-propionylamino)-2-deoxy-D-glucose in 100ml deionized water to obtain 5% 2-(3-carboxy-1-propionylamino)- 2-deoxy-D-glucose aqueous solution;
[0019] 2. Dissolve 1g of glucose in 100ml of deionized water to obtain a 1% glucose aqueous solution;
[0020] 3. Configure a silver nitrate solution with a mass fraction of 7.87g / L, add dropwise 10% ammonia solution until the precipitate disappears, and obtain a silver ammonia solution with a mass fraction of 7.87g / L;
[0021] 4. Mix 5% 2-(3-carboxy-1-propionylamino)-2-deoxy-D-glucose aqueous solution, 1% glucose aqueous solution and silver ammonia solution with a mass fraction of 7.87g / L at a ratio of 10:1 : 2 volume ratio mixing, stirring at a temperature of 60° C. for 10 h to obtain a nano-silver solution with a particle size of 5-70 nm.
[0022] See attached figure 1 , which is the ultraviolet spectrogram of the nano-silver colloid solution provided by the present embodiment; as can be s...
Embodiment 2
[0026] 1. Dissolve 5g of 2-(3-carboxy-1-propionylamino)-2-deoxy-D-glucose in 100ml deionized water to obtain 5% 2-(3-carboxy-1-propionylamino)- 2-deoxy-D-glucose aqueous solution;
[0027] 2. Dissolve 1g of fructose in 100ml of deionized water to obtain a 1% fructose aqueous solution;
[0028] 3. Configure a silver nitrate solution with a mass fraction of 7.87g / L, add 10% ammonia solution dropwise until the precipitate disappears, and obtain a silver ammonia solution with a mass fraction of 7.87g / L;
[0029] 4. With 5% 2-(3-carboxy-1-propionylamino)-2-deoxy-D-glucose, 1% fructose aqueous solution and mass fraction are 7.87g / L silver ammonia solution with 10:2: 1 volume ratio, and stirred at 60° C. for 10 h to obtain a nano-silver solution with a particle size of 5-70 nm.
Embodiment 3
[0031] 1. Dissolve 5g of 2-(3-carboxy-1-propionylamino)-2-deoxy-D-glucose in 100ml deionized water to obtain 5% 2-(3-carboxy-1-propionylamino)- 2-deoxy-D-glucose aqueous solution;
[0032] 2. Dissolve 0.001g of sodium borohydride in 100ml of deionized water to obtain a 1% sodium borohydride aqueous solution;
[0033] 3. Configure a silver nitrate solution with a mass fraction of 7.87g / L, add 10% ammonia solution dropwise until the precipitate disappears, and obtain a silver ammonia solution with a mass fraction of 7.87g / L;
[0034] 4. Mix 5% 2-(3-carboxy-1-propionylamino)-2-deoxy-D-glucose aqueous solution and silver ammonia solution with a mass fraction of 7.87g / L at a volume ratio of 10:1, Titrate with 1% sodium borohydride aqueous solution at 40°C and stir until the reaction is complete to obtain a nano-silver solution with a particle size of 5-70 nm.
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