Method for recycling plant alkaloid from smokeless tobacco extract
A technology of plant alkaloids and extracts, which is applied in the field of recovery of plant alkaloids, can solve the problems of expensive investment and achieve the effects of reducing environmental pollution, strong energy, and weak irritation
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Embodiment 1
[0071] A method for recovering plant alkaloids from tobacco extract, comprising the steps of:
[0072] Step a. Get 50kg of waste water from reconstituted tobacco leaves and stems, add sodium hydroxide and ammonia water to adjust the pH to form an alkaline mixed solution of 10, then heat and concentrate to obtain a 12kg concentrated solution, add 10L of dichloromethane and Ethyl acetate (volume ratio: 1:2) mixed with the extractant, stirred and mixed for 5 minutes, centrifuged at 1000rpm for 3 minutes to obtain the extract, that is, the organic phase;
[0073] Step b. Take the extract, evaporate and concentrate the thin film at 35°C until there is no obvious reagent smell, to obtain free plant lye, add propylene glycol to the free plant lye, and the mass ratio of the propylene glycol to the free plant lye is 1 : 3, use 2mol / l ammonia water to adjust the pH to 8, stir and mix for 5min;
[0074] Step c. Use molecular distillation equipment to distill the free plant lye after pH ...
Embodiment 2
[0078] A method for recovering plant alkaloids from tobacco extract, comprising the steps of:
[0079]Step a. Get 50kg of waste water from reconstituted tobacco leaves and stems, add sodium hydroxide and ammonia water to regulate the formation of an alkaline mixed solution with a pH of 10, then heat and concentrate to obtain a 12kg concentrated solution, add 10L of dichloromethane and The extraction agent mixed with ethyl acetate (volume ratio 1:5), stirred and mixed for 5 minutes, centrifuged at 1000rpm for 3 minutes to obtain the extract, that is, the organic phase;
[0080] Step b. Take the extract, evaporate and concentrate the thin film at 35°C until there is no obvious reagent smell, and obtain free plant lye, add propylene glycol to the free plant lye, and the mass ratio of the propylene glycol to the free plant lye is 1 : 3, use 2mol / l ammonia water to adjust the pH to 8, stir and mix for 5min;
[0081] Step c. Use molecular distillation equipment to distill the free ...
Embodiment 3
[0085] A method for recovering plant alkaloids from tobacco extract, comprising the steps of:
[0086] Step a. Get 50kg of waste water from reconstituted tobacco leaves and stems, add sodium hydroxide and ammonia water to regulate the formation of an alkaline mixed solution with a pH of 10, then heat and concentrate to obtain a 12kg concentrated solution, add 10L of ethyl acetate and The extractant mixed with petroleum ether (volume ratio 1:4), stirred and mixed for 5 minutes, centrifuged at 1000rpm for 3 minutes to obtain the extract, that is, the organic phase;
[0087] Step b. Take the extract, evaporate and concentrate the thin film at 35°C until there is no obvious reagent smell, and obtain free plant lye, add propylene glycol to the free plant lye, and the mass ratio of the propylene glycol to the free plant lye is 1 : 3, use 2mol / l ammonia water to adjust the pH to 8, stir and mix for 5min;
[0088] Step c. Use molecular distillation equipment to distill the free plant...
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