[pandaman]

Vape juice is nicotine, glycol (PG) and glycerin (VG), the "V" in "VG" stands for "vegetable", which is a type of plant so if having a plant matter is a decisive factor in absorption then both delivery methods have it. It, however, depends on what you mean by "bound", from my limited knowledge nicotine is not bound chemically to anything in tobacco leaf either but perhaps water from plant cells has some properties which makes it very different from water from atomizing glycol and glycerin. And the concentration of nicotine in vape smoke is lower as I already shown with the numbers.