Preparation method and application of tobacco liquid additive capable of improving burning and smoking quality of cut stems
A technology of additives and cut stems, which is applied in the preparation and application field of tobacco liquid additives that can improve the burning and smoking quality of cut stems. Effects of woodiness, reducing irritation, improving aftertaste and comfort after smoking
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Embodiment 1
[0017] 1. Weigh 100 g of crushed cut tobacco stems into a 1000 ml round bottom flask, add 500 ml of cyclohexane, place in a water bath at 90° C. for reflux extraction for 2 hours. Filter the extract while hot into another 1000ml round bottom flask, add 500ml cyclohexane again, and repeat the extraction twice. Filter and transfer the filter residue to another 1000ml round bottom flask for later use.
[0018] The extracted filtrate was concentrated on a rotary evaporator with a vacuum degree of 200mbar and a water bath temperature of 50°C to free of cyclohexane, and then concentrated under reduced pressure to 100mbar until solvent-free dripping to obtain crude extract A1.
[0019] 2. Add 500ml of ethyl acetate to the 1000ml round-bottomed flask that the filter residue was transferred to, and then reflux and extract for 2 hours at a water bath temperature of 80°C, and then use 1000ml of ethyl acetate to repeat the extraction twice. 200mbar, concentrated on a rotary evaporator ...
Embodiment 2
[0025] 1. Weigh 100g of crushed low-grade tobacco leaves into a 2000ml round bottom flask, add 1500ml of petroleum ether with a boiling range of 30-60, and place it in a 50°C water bath for reflux extraction for 2 hours. Filter the extract while hot into another 2000ml round bottom flask, add 1500ml petroleum ether again, and repeat the extraction twice. Filter and transfer the filter residue to another 2000ml round bottom flask for later use.
[0026] The extracted filtrate was concentrated on a rotary evaporator with a vacuum degree of 700mbar and a water bath temperature of 50°C until there was no petroleum ether, and then concentrated under reduced pressure to 200mbar until solvent-free and dripped to obtain crude extract A2.
[0027] 2. Add 600ml of acetone to the 1000ml round-bottomed flask into which the filter residue was transferred, reflux and extract at 60°C water bath temperature for 2 hours, then use 1200ml acetone to repeat the extraction twice, after merging, ...
Embodiment 3
[0033] 1. Weigh 50 g of crushed fenugreek seeds and 50 g of crushed shredded leaves in a 2000 ml round bottom flask. Add 1000ml of petroleum ether with a boiling range of 30-60, reflux and extract at 60°C water bath temperature for 2 hours, filter the extract while it is hot into another 2000ml round bottom flask, add 1000ml of petroleum ether again, and repeat the extraction twice. Filter and transfer the filter residue to another 2000ml round bottom flask for later use.
[0034] After combining, concentrate on a rotary evaporator with a vacuum degree of 700mbar and a water bath temperature of 50°C, and then reduce the pressure to 200mbar and concentrate to dryness to obtain crude extract A3.
[0035] 2. Add 800ml of diethyl ether to the 1000ml round-bottomed flask into which the filter residue was transferred, reflux and extract at 40°C water bath temperature for 2 hours, then use 1600ml diethyl ether to repeat the extraction twice, after combining, place on a rotary evapor...
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