Original sentence: Acetaldehyde occurs naturally in ripe fruit, coffee, and fresh bread, and is produced by plants as part of their normal metabolism.It is a flammable liquid with a green apple fruity smell.Like other carbonyl compounds, acetaldehyde tautomerizes to give the enol, ethenol, with Keq = 6 x 10-5
Edited sentence: Acetaldehyde is a significant constituent of tobacco smoke.Acetaldehyde occurs naturally in ripe fruit, coffee, and bread, and is produced by plants as part of their normal metabolism.It has been demonstrated to have a synergistic effect with nicotine, increasing the onset and tenacity of addiction to cigarette smoking, particularly in adolescents.It is a flammable liquid.Like other carbonyl compounds, acetaldehyde tautomerizes to give the enol, ethenol, with Keq = 6 x 10−5.mk:Ацеталдехид