piperine
/pip-uh-reen, -er-in/US // ˈpɪp əˌrin, -ər ɪn //UK // (ˈpɪpəˌraɪn, -rɪn) //
胡椒碱,胡椒素,哌嗪,哌啶
Definitions
n.名词 noun
- 1
Chemistry.
- : a white, crystalline alkaloid, C17H19NO3, obtained from pepper and other piperaceous plants and also prepared synthetically: used as an insecticide.
Examples
Pepper owes its properties to an alkaloid, piperine, and to a volatile oil.
Piperine colours the sulphuric acid blood-red, and is turned dark-brown, almost black by the cerium oxide (Sonnenschein).
He has proved that the alkaloid so obtained is identical with that prepared from piperine.
One-half ounce balsam copaiba, one-quarter ounce liquorice powder, one-half drachm piperine.
It also contains a mere trace of piperina or piperine, one of the most valuable constituents of black pepper.
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