Part Used
Every part of the plant except the seed contains nicotine, but the concentration is related to different factors such as species, type of land, culture and weather conditions. The concentration of nicotine increases with the age of the plant. Tobacco leaves contain 2 to 8% nicotine combined as malate or citrate. The distribution of the nicotine in the mature plant is widely variable: 64% of the total nicotine exists in the leaves, 18% in the stem, 13% in the root, and 5% in the flowers.
Read more about this topic: Nicotiana Tabacum
Famous quotes containing the word part:
“Quidquid luce fuit tenebris agit: but also the other way around. What we experience in dreams, so long as we experience it frequently, is in the end just as much a part of the total economy of our soul as anything we “really” experience: because of it we are richer or poorer, are sensitive to one need more or less, and are eventually guided a little by our dream-habits in broad daylight and even in the most cheerful moments occupying our waking spirit.”
—Friedrich Nietzsche (1844–1900)
“Much attribute he hath, and much the reason
Why we ascribe it to him; yet all his virtues,
Not virtuously of his own part beheld,
Do in our eyes begin to lose their gloss,
Yea, like fair fruit in an unwholesome dish,
Are like to rot untasted.”
—William Shakespeare (1564–1616)