| 摘要 |
The tobacco, in leaf or cut form for making cigars or cigarettes, has its nicotine content reduced or completely removed by the action of tannin. The tobacco is steeped in a concentrated infusion of China tea for up to 60 seconds to extract all the nicotine and 30 seconds to remove half, and then pressed. The liquid from the pressing, containing a high proportion of nicotine, could be marketed as a parasiticide.
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