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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. [citation needed]
Most nightshades contain varying amounts of nicotine, a powerful neurotoxin to insects. However, tobaccos tend to contain a much higher concentration of nicotine than the others. Unlike many other Solanaceae species, they do not contain tropane alkaloids, which are often poisonous to humans and other animals.
Nicotiana (/ ˌ n ɪ k oʊ ʃ i ˈ eɪ n ə, n ɪ ˌ k oʊ-,-k ɒ t i-,-ˈ ɑː n ə,-ˈ æ n ə / [2] [3] [4]) is a genus of herbaceous plants and shrubs in the family Solanaceae, that is indigenous to the Americas, Australia, Southwestern Africa and the South Pacific.
Various plants are used around the world for smoking due to various chemical compounds they contain and the effects of these chemicals on the human body. This list contains plants that are smoked, rather than those that are used in the process of smoking or in the preparation of the substance.
Nicotine-only products — Nicotine-containing products that do not contain tobacco, featuring nicotine either extracted from tobacco or non-tobacco nicotine, usually synthetic nicotine. Common nicotine-only products include e-liquid ( aerosolized using an e-cigarette or vape ), nicotine pouches , and various types of nicotine replacement ...
Though chewing tobacco isn’t smoked, it contains nicotine and carcinogens, which can still have long-term health impacts, including oral cancers and heart disease. ... Marijuana. Marijuana use ...
Nicotiana rustica, commonly known as Aztec tobacco [2] or strong tobacco, [3] is a rainforest plant in the family Solanaceae native to South America. It is a very potent variety of tobacco , containing up to nine times more nicotine than common species of Nicotiana such as Nicotiana tabacum (common tobacco). [ 4 ]
Nicotiana glauca is a species of flowering plant in the tobacco genus Nicotiana of the nightshade family Solanaceae. It is known by the common name tree tobacco.Its leaves are attached to the stalk by petioles (many other Nicotiana species have sessile leaves), and its leaves and stems are neither pubescent nor sticky like Nicotiana tabacum.