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:
“Even if matter could do every outward thing that God does, the idea of it would not work as satisfactorily, because the chief call for a God on modern men’s part is for a being who will inwardly recognize them and judge them sympathetically. Matter disappoints this craving of our ego, so God remains for most men the truer hypothesis, and indeed remains so for definite pragmatic reasons.”
—William James (1842–1910)
“I love this child. Red-haired—patient and gentle like her mother—fey and funny like her father. When she giggles I can hear him when he and I were young. I am part of this child. It may be only because we share genes and that therefore smell familiar to each other. . . . It may be that a part of me lives in her in some important way. . . . But for now, it’s jelly beans and “Old MacDonald” that unite us.”
—Robert Fulghum (20th century)