出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/08/27 09:44:21」(JST)
An aroma compound, also known as odorant, aroma, fragrance, or flavor, is a chemical compound that has a smell or odor. A chemical compound has a smell or odor when it is sufficiently volatile to be transported to the olfactory system in the upper part of the nose.
Generally molecules meeting this specification have molecular weights of <300. Flavors affect both the sense of taste and smell, whereas fragrances affect only smell. Flavors tend to be naturally occurring, and fragrances tend to be synthetic.[1]
Aroma compounds can be found in food, wine, spices, perfumes, fragrance oils, and essential oils. For example, many form biochemically during ripening of fruits and other crops. In wines, most form as byproducts of fermentation. Also, many of the aroma compounds play a significant role in the production of flavorants, which are used in the food service industry to flavor, improve, and generally increase the appeal of their products.
An odorizer may add an odorant to a dangerous odorless substance, like propane, natural gas, or hydrogen, as a warning.
Compound name | Fragrance | Natural occurrence | Chemical structure |
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Geranyl acetate | Fruity, Rose | Rose, Floral |
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Methyl formate | Ethereal |
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Methyl acetate | Sweet, nail polish Solvent |
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Methyl propionate Methyl propanoate |
Sweet, fruity, rum-like |
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Methyl butyrate Methyl butanoate |
Fruity, Apple Pineapple |
Pineapple |
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Ethyl acetate | Sweet, solvent | Wine |
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Ethyl butyrate Ethyl butanoate |
Fruity, Orange Pineapple |
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Isoamyl acetate | Fruity, Banana Pear |
Banana plant |
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Pentyl butyrate Pentyl butanoate |
Fruity, Pear Apricot |
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Pentyl pentanoate | Fruity, Apple |
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Octyl acetate | Fruity, Orange |
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Benzyl acetate | Fruity, Strawberry | Strawberries |
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Methyl anthranilate | Fruity, Grape |
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Compound name | Fragrance | Natural occurrence | Chemical structure |
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Myrcene | Woody, complex | Verbena, Bay leaf |
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Geraniol | Rose, flowery | Geranium, Lemon |
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Nerol | Sweet rose, flowery | Neroli, Lemongrass |
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Citral, lemonal Geranial, neral |
Lemon | Lemon myrtle, Lemongrass |
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Citronellal | Lemon | Lemongrass |
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Citronellol | Lemon | Lemongrass, rose Pelargonium |
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Linalool | Floral, sweet Woody, Lavender |
Coriander, Sweet basil Lavender |
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Nerolidol | Woody, fresh bark | Neroli, ginger Jasmine |
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Compound name | Fragrance | Natural occurrence | Chemical structure |
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Limonene | Orange | Orange, lemon |
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Camphor | Camphor | Camphor laurel |
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Menthol | Menthol | Mentha |
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Carvone1 | Caraway or Spearmint | Caraway, dill, spearmint |
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Terpineol | Lilac | Lilac, cajuput |
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alpha-Ionone | Violet, woody | Violet |
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Thujone | Minty | Wormwood, lilac, juniper |
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Note: Carvone, depending on its chirality, offers two different smells.
Compound name | Fragrance | Natural occurrence | Chemical structure |
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Benzaldehyde | Almond | Bitter almond |
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Eugenol | Clove | Clove |
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Cinnamaldehyde | Cinnamon | Cassia Cinnamon |
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Ethyl maltol | Cooked fruit Caramelized sugar |
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Vanillin | Vanilla | Vanilla |
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Anisole | Anise | Anise |
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Anethole | Anise | Anise Sweet basil |
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Estragole | Tarragon | Tarragon |
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Thymol | Thyme | Thyme |
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Compound name | Fragrance | Natural occurrence | Chemical structure |
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Trimethylamine | Fishy Ammonia |
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Putrescine Diaminobutane |
Rotting flesh | Rotting flesh |
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Cadaverine | Rotting flesh | Rotting flesh |
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Pyridine | Fishy | Belladonna |
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Indole | Fecal Flowery |
Feces Jasmine |
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Skatole | Fecal | Feces (diluted) Orange Blossoms |
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High concentrations of aldehydes tend to be very pungent and overwhelming, but low concentrations can evoke a wide range of aromas.
Animals that are capable of smell detect aroma compounds with olfactory receptors. Olfactory receptors are cell membrane receptors on the surface of sensory neurons in the olfactory system that detect air-borne aroma compounds.
In mammals, olfactory receptors are expressed on the surface of the olfactory epithelium in the nasal cavity.
In 2005–06, fragrance mix was the third-most-prevalent allergen in patch tests (11.5%).[6]
'Fragrance' was voted Allergen of the Year in 2007 by the American Contact Dermatitis Society. The composition of fragrances is usually not disclosed in the label of products, hiding the actual chemicals of the formula, which raises concerns among some consumers.[7]
Fragrances are regulated in the United States by the Toxic Substances Control Act of 1976 that "grandfathered" existing chemicals without further review or testing and put the burden of proof that a new substance is not safe on the EPA. The EPA, however, does not conduct independent safety testing but relies on data provided by the manufacturer.[8]
In 2010 the International Fragrance Association published a list of 3,059 chemicals used in 2011 based on a voluntary survey of its members. It was estimated to represent about 90% world's production volume of fragrances.[9]
Look up aroma in Wiktionary, the free dictionary. |
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リンク元 | 「perfume」「芳香」「aroma」「odoriferous」 |
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