Water-soluble, high-molecular brown reaction product, and its application in tobacco
A water-soluble polymer, browning reaction technology, applied in the directions of tobacco, application, and preparation of tobacco, can solve problems such as affecting cigarette flavoring effect, and achieve the effects of good cigarette flavoring effect, mature operation method, and broad application prospects.
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Embodiment 1
[0014] Take glucose and glycine at a weight ratio of 1:1.4, and then add 1% catalyst sodium carbonate to the reactor, add 10 times the weight of water, and react at a temperature of 90-95° C. for 30 hours. After the reaction is finished, take a certain amount of product solution and add 10 times of absolute ethanol, let it stand still, precipitate the precipitate, pour off the supernatant, filter it with a sand core funnel, and wash the precipitate with absolute ethanol 2 to 3 times; The obtained colloidal precipitate was frozen at -10°C for 24 hours, and after the frozen precipitate melted, it was dissolved in distilled water, and then 10 times the weight of absolute ethanol was added for precipitation. The resulting precipitate was extracted with ether in a Soxhlet extractor until the extract was nearly colorless. Preliminarily dry the precipitate at 35-40°C, and then dry at 100±2°C until constant weight. The reaction yield is about 20%.
[0015] With Waters ALC / GPC 244 ty...
Embodiment 2
[0018] Take glucose and alanine at a weight ratio of 1:1.5, then add 1% catalyst sodium bicarbonate to the reactor, add 12 times the weight of water, and react 35 at a temperature of 90-95°C Hour. After the reaction is finished, take a certain amount of product solution and add 12 times of absolute ethanol, let it stand still, precipitate the precipitate, pour off the supernatant, filter it with a sand core funnel, and wash the precipitate with absolute ethanol 2 to 3 times; The obtained colloidal precipitate was frozen at -10°C for 24 hours, and after the frozen precipitate melted, it was dissolved in distilled water, and then 10 times the weight of absolute ethanol was added for precipitation. The resulting precipitate was extracted with ether in a Soxhlet extractor until the extract was nearly colorless. Preliminarily dry the precipitate at 35-40°C, and then dry at 100±2°C until constant weight. The reaction yield is about 20%.
[0019] With Waters ALC / GPC 244 type high-...
Embodiment 3
[0022] Take xylose and alanine at a weight ratio of 1:1.6, then add 1% catalyst sodium carbonate to the reactor, add 14 times the weight of water, and react 30 at a temperature of 95-100°C Hour. After the reaction is finished, take a certain amount of product solution and add 10 times of absolute ethanol, let it stand still, precipitate out, pour off the supernatant, use a sand core funnel to filter, and wash the precipitate with absolute ethanol 2 to 3 times. The obtained colloidal precipitate was frozen at -10°C for 24 hours, and after the frozen precipitate melted, it was dissolved in distilled water, and then 10 times the weight of absolute ethanol was added for precipitation. The resulting precipitate was extracted with ether in a Soxhlet extractor until the extract was nearly colorless. Preliminarily dry the precipitate at 35-40°C, and then dry at 100±2°C until constant weight. The reaction yield is about 18%.
[0023] With Waters ALC / GPC 244 type high-performance liq...
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