Leaf alcohol exists in mostly all eco-friendly plants, as well as the supposed icon of the “environment-friendly” of plants is shown in the smell of fallen leave alcohol. Although leaf alcohol has been a web link in the human food web because human background, its presence was not detected in camellia oil until 1895. In 1917, it was uncovered that leaf alcohol existed in Japanese pepper mint oil, and its structure was roughly established. Stoll and Rouve determined that the structure of leaf alcohol was cis-3-hexen-l-ol. Leaf alcohol was also discovered in the fermentation of black tea around 1920, and also around 1930, Japanese chemical workers additionally located it in the fresh leaves of tea. Fallen leave alcohol has been located in lots of greater plants, such as jasmine huge flower, jasmine small blossom, mint, citronella, viola, tomato, tea, thyme, mangosteen, geranium, poultry mulberry, strawberry, grape, kiwi, Pomelo, raspberry, sweet-scented osmanthus, jasmine, violet leaves, red clover, radish, raspberry and also black grasshopper, and so on. The content of fallen leave alcohol in the fallen leave oil of acacia and also mulberry can get to 50%, as well as almost 30% in environment-friendly tea. The natural extraction approach of leaf alcohol can be separated as well as drawn out from these plants, mainly removed from important oils, and after that cleansed by responding with equivalent phthalates or allophanates, and the gotten cis-isomer make up 95%. Essential oils extracted from plants are themselves limited in quantity, and vital oils frequently consist of a variety of substances. Therefore, it is very tough to extract and also separate a certain particular substance (such as fallen leave alcohol), as well as the yield of extraction is also extremely tiny. Clearly, drawing out fallen leave alcohol straight from all-natural plants can not satisfy the demand for leaf alcohol, which is also extremely uneconomical in practice.