Natural spices: Plant natural spices (Fiora natural perfume): natural flavors with aromatic plants plant flowers, branches, leaves, grass, roots, bark, stems, seeds or fruit as raw materials, using steam distillation, extraction, press , absorption and other methods, produced essential oils, extracts, tinctures, balms, incense resins and absolutes, etc., such as rose oil, jasmine extract, vanilla tincture, Bai Lanxiang fat, tolu balsam, narcissus absolutes Wait. Extraction method are: â‘ steam distillation and water distillation method is widely used in the leaves, stems, trunk, bark, seeds and oil extraction and other roots, such as mint, cedar, cinnamon, vetiver, Litsea seeds and so on. â‘¡ press, cold grinding method, mainly for orange, lemon, bergamot and other citrus fruit of oil extraction. This method is not due to the heat, and the resulting aroma of fresh oil. â‘¢ solvent extraction method, mainly for flowers, aromatic plant resins, spices processing. Volatile organic solvents used in petroleum ether, ethanol, acetone, etc., depending on the starting material chosen. Since the flowers leach extract, obtained by the removal of the solvent, said extract substances, such as jasmine extract, extract and other Prynne: If you've got called incense resin from resin, such as wind fragrant resin, benzoin resin; from spices, called oleoresin capsicum oleoresin such as, celery seed oil resin. Extract because it contains more wax, dissolve poor performance, often ethanol alcohol-soluble aroma components proposed, filtered insoluble wax, and finally the ethanol is distilled off under reduced pressure, to give absolutes. Extraction of natural spices with liquid butane, carbon dioxide and supercritical fluid extraction technology is a relatively new technology, applied only to a small number of spice plants. Animal natural spices (Fauna natural perfume): natural flavors animal is an animal secretions or excretions. Animal dozen natural flavors, capable of forming a commodity and often applied only musk, ambergris, civet and castoreum four kinds, the common use of ethanol will be made after its tincture. Containing essential oils found in many plant families and genera, mainly Labiatae, Myrtaceae, Asteraceae, Rutaceae, Pinaceae, umbrella, Lauraceae, grassy, bean and cypress, with its areas throughout the world. Such as China mint, cinnamon, bay leaf, star anise, Litsea seeds, lemongrass, sweet-scented osmanthus and jasmine flowers, Prynne, tree orchids; Indian sandalwood and lemon grass, Egyptian jasmine flower, Guyana rosewood, cloves, cinnamon in Sri Lanka, Madagascar Vanilla, Paraguay petitgrain, French lavender, Bulgarian rose, spearmint American and Italian citrus Tanzania, these spices are factors in the international repute. Internationally popular natural flavors of about 200 to 300 species, China produces about 100 kinds or more, including Jasmine, Prynne, tree orchids, is China's unique products. In addition, the use of biotechnology and other spices such as fermentation process butyric acid, diacetyl, benzaldehyde, are also attributable to natural spices, spices such attention and develop flavors. Artificial flavors: Synthetic spices and single ion spices. Synthesized by chemical synthesis, said the whole spices, such as coumarin, benzene, ethanol, and from acetylene, acetone synthetic linalool; separated by physical or chemical means from a relatively pure essential oils perfuming ingredient called single ion spices, such as Cang oil separated from citral, separated from the Kashiwagi brain cedar oil; by a single ion spices or essential oil terpene compound derivative obtained by chemical reaction called semi-synthetic fragrances, such as obtained from citral ionone, pinene from synthetic terpineol and the like. Isolated spices and spice varieties are mostly semi-synthetic whole synthesis was available, but there are subtle differences in aroma quality. Synthetic perfume production from natural conditions, restrictions, product quality and stability, the price is cheaper, and there are many products that do not exist in nature and with a unique aroma, it is nearly 20 years of rapid development. Development of synthetic spices mainly in three aspects: â‘ synthesis of natural products, such as geraniol (geraniol), Iris ketone; â‘¡ chemical processing of bulk oil feedstock, such as pinene (turpentine), citronella (citronella oil) and the like; â‘¢ use organic chemical raw materials such as coal tar products, petrochemical raw materials. Commonly used synthetic perfume less than 2,000 varieties of species, the number of different output. Synthetic perfume classification and structure can be divided according to the chemical structure of hydrocarbons, halogenated hydrocarbons, alcohols, phenols, ethers, acids, esters, lactones, aldehydes, ketones, acetal (ketone), a nitrile, a heterocyclic like. Molecular weight synthetic perfume is between 50 to 300, a molecular weight of greater, the smaller the volatile aroma is weakened. Small changes in the molecular structure includes a position different substituents, geometrical isomers, stereoisomers may also lead to differences in aroma, such as vanillin (3-methoxy-4-hydroxybenzaldehyde) has a pleasant Vanilla Bean aroma, and its isomer 2-hydroxy-3-methoxy benzaldehyde is a similar kind of unpleasant odor of phenol; nerol and geraniol cis-trans geometrical isomers, the former is more soft and sweet aroma ; cis-trans isomers of rose oxide is a perspective, aroma cis better. Spices on the relationship between molecular structure and organoleptic properties, is the spice chemists are actively studying. Production method involves synthesis of many organic reactions, mainly categorized as oxidation, reduction, esterification, substitution, condensation, addition, cyclization and isomerization and other categories. Because as long as synthetic perfume unpleasant odor trace impurities exist, it will undermine the overall quality, and therefore, is purified synthetic fragrances a very important problem, commonly used purification means is distilled under reduced pressure and crystallization. Production development in China synthetic fragrances after the 1950s, in Shanghai, Tianjin and other places more concentrated. The main raw materials used in the production of citronella oil, Litsea oil, Linalyl oil, sassafras oil, cedar oil, turpentine, castor oil, fusel oils, aromatics and phenols. The size of the total of more than 600 kinds of products, including vanillin, coumarin, phenethyl alcohol, Heliotropine and artificial sandalwood in the international market has been a considerable reputation.