Aroma chemicals are used to compound both flavor compositions (for imparting attractive taste and aroma to processed foods and beverages) and fragrance formulations (which impart a pleasing scent to consumer goods such as perfumes, toiletries, cosmetics, detergents and household cleaners). Compounded flavors and fragrances are complex blends that include in their formulations not only aroma chemicals but also essential oils and natural extracts, solvents, diluents and carriers.

In 2000, the worldwide flavor and fragrance business, including sales of compounded flavor and fragrance compositions and essential oils, was valued at almost $14 billion, representing a 4.0% compounded yearly growth rate since 1997. Production of aroma chemicals , calculated from estimates of supply/demand by major geographic region, accounted for $1.8 billion of the total value.

Since 1996, demand for aroma chemicals has grown almost 2.7% per year (in constant dollars), with consumption valued at an estimated $1.7 billion in 2000.

Although overcapacity is known to exist for some products, the estimated production of aroma chemicals appears to be only in slight excess of consumption. Current demand for aroma chemicals is estimated to be approximately in balance with the supply.

While production of aroma chemicals is virtually impossible to assess precisely because of the large number of chemicals involved in a highly complex web of international trading, consumption is estimated to vary significantly worldwide, by geographic area as well as by product category. In 2000, the United States and Western Europe together accounted for over 70% of the value of all aroma chemicals and over 90% of the value of musk chemicals consumed in flavor and fragrance compositions. These high ratios also characterize the estimated consumption of aroma chemicals for 2000.

In 1996-2000, consumption of aroma chemicals in Europe increased at an annual rate of about 6.8% in value. This impressive growth may be contributed to the opening of Eastern European markets, which presented good opportunities for European suppliers. In Japan, consumption of synthetic aroma chemicals has declined because regulations favor products from natural sources. Synthetic aroma chemicals are used in less than 25% of compounded products. Other Far Eastern markets, especially China, have experienced above-average demand growth since 1996, albeit from a much smaller base than either the United States or Western Europe. Export values increased in China because of the large expansion of production facilities by global producers of aroma chemicals .

In the United States, growth of 5-6% per year is expected through 2005. In Western Europe and Japan, consumption is expected to remain at the same level. Markets in Southeast Asia are likely to grow at a high rate of 7-8% per year during the same period.

Tiglic acid is a monocarboxylic unsaturated organic acid. It is found in croton oil and in several other natural products. It was also isolated from the defensive secretion of certain beetles?

Properties and uses

Tiglic acid has a double bond between the second and third carbons of the chain. Together with angelic acid form a pair of cis-trans isomers. Tiglic acid is a volatile and crystallizable substance with a sweet, warm spicy odour. It is used in making perfumes and flavoring agents.

Toxicity

Tiglic acid is a skin and eye irritant. The inhalation of the substance causes respiratory tract irritation. It is listed on the Toxic Substances Control Act (TSCA).

Names and discovery

In 1819 Pelletier and Caventou isolated a peculiar volatile and crystallizable acid from the seeds of Schoenocaulon officinalis, a Mexican plant of family Melanthaceae (also called cevadilla or sabadilla). Consequently the substance was named sabadillic or cevadic acid. It was later found to be identical with Frankland and Duppa's methylcrotonic acid (1865). In 1870 Geuther and Fröhlich prepared an acid from croton oil to which they gave the name tiglic acid (or tiglinic acid) after (Croton) tiglium (Linn.), specific name of the croton oil plant. The compound was shown to be identical with the previously described methyl-crotonic acid.

Source from: huihong

Kojic acid is a by-product in the fermentation process of malting rice for use in the manufacturing of sake, the Japanese rice wine. There is convincing research—both in vitro (in a test tube) and in vivo (on a live subject)—showing kojic acid to be effective for inhibiting melanin production (Source: Archives of Pharmacal Research, August 2001, pages 307-311). Glycolic or kojic acid , or glycolic acid with hydroquinone, are highly effective in reducing the pigment in melasma patients (Source: Dermatological Surgery, May, 1996 pages 443-447). So why aren't there more products available containing kojic acid? Because it is an extremely unstable ingredient in cosmetic formulations. Upon exposure to air or sunlight it can turn a strange shade of brown and lose its efficacy. Many cosmetic companies use kojic dipalmitate as an alternative because it is far more stable in formulations. However, there is no research showing kojic dipalmitate to be as effective as kojic acid , although is it a good antioxidant. Further, some controversial research has shown kojic acid to have some carcinogenic properties. (Sources: Mutation Research, Genetic Toxicology and Environmental Mutagenesis, June 2005, pages 133-1450 and Toxicological Sciences, September 2004, pages 43-49)

Source from: http://www.flavors-fragrances.com/news/index.html

Aroma chemicalsFor a natural perfume, through chemical techniques to analyze, identify the chemical structure of their aromatic components, and then the corresponding chemical methods to produce compounds with the same structure, namely, synthetic fragrance. Aroma simulated multi-borrowed the name of natural fragrance name, such as musk ketone. Aroma chemicals can be broadly interpreted as a synthetic perfume.
In 1868, chemist Parkin in the UK the first use of coal tar to produce a aroma chemicals - coumarin (ie, p-coumaric lactone). So far, for the vast majority of natural spices, all produce weapons of a corresponding synthetic perfume. But also some of the synthetic perfume has not yet found in nature, the corresponding species, can be regarded as a true "artificial flavor."
The production of aroma chemicals , which aims to achieve a specific molecular structure of compounds, so its raw materials from natural plants and animals do not have to, but mostly coal chemical products and petrochemical products. As the raw materials readily available, so the output of synthetic spices and production rate are not subject to climatic, geographical and other natural factors, and cost has been greatly reduced, thus greatly expanding the scope of application of spices, so that people can enjoy their daily lives to the aromatic items increased significantly, and many no obvious smell of materials and items inside were actually added a aroma chemicals. Synthetic perfume industry has become a modern fine chemical industry is an important component.
Although the synthetic perfume came quickly swept through an entire spice industry, but it does not look like the original one as a real alternative to natural spices. Even at present the most advanced chemical technology to produce aroma chemicals are also out of impunity for traces of man-Fu Zao, its flavor difference between feeling and natural spices are still very obvious. Not only is the flavor on the differences in psychological perception, the difference between the two is more obvious: the natural spices often make people have a "pleasant", "moving" and a very subtle psychological experience, while the synthetic perfume had almost no such effect. This gap in the musk of the research process was very clearly demonstrated.
Natural musk deer musk deer is not only right, but also for people's mental and physical activities have a very sensitive influence has always been an extremely valuable spices. Early 20th century, the Swiss chemist discovered the musk component is mainly a fragrant musk ketone, and successfully conducted a synthetic. Many people believe that the magic of the effectiveness of musk from the musk ketone is generated. But when people try to lure musk deer musk ketone, when they did not succeed.
"Has its flavor without the gas, has its own shape without their god," is now the synthesis of perfume has always been an insurmountable barrier. Therefore, until today, brilliant synthesis of fragrant spice blend in the division would always do everything possible to join a number of natural spices, so bring up the flavor as much as possible to bring a bit dynamic and spirituality.
In fact, in terms of the value of natural spices, aromatic feeling anti-in the second, the real valuable is that it has the potential to affect human physical and mental systems. Through the appropriate compatibility, you can become a physical and mental nourishment and adjustment can be a tranquilizer, game, maintain good health. Therefore, from the "Shen Nong's Materia Medica" to "Compendium of Materia Medica", the vast majority of spices were close to traditional Chinese medicine, "fume" therapy is also widely adopted by physicians. In these respects, aroma chemicals. is even more difficult to catch up.
Synthetic and natural spices spices can not produce the same effect, a number of reasons.
On the one hand, natural flavor is a complex mixture, often involve a variety of compounds, the aroma of the ingredients is extremely complex, it was even likened it to a chaotic system to the current level of chemical and biological technology, it is difficult for its aroma ingredients to achieve complete and accurate analysis and grasp. Even for jasmine and rose fragrance, until now, every year there was a new element has been identified.
On the other hand, the effectiveness of natural spices, not only to the aroma of its own structure, but also the mechanisms and human sense of smell is closely related to related to the sense of smell and mental, and psychological systems and physical systems, a series of psychology and neuroscience areas. The psychology and neuroscience is the latest development in the category of natural sciences, but also far better to answer these questions.
However, it should be noted that although the natural spices derived from nature, but mankind can still use their wisdom to understand it, improve it, and use it. Looking forward to the future of science and technology to give people a real cheap incense "Jane," Now these machines do not have to let the incense stiff "material" disturbing view of the nose.
In recent years, more and more people have discovered the shortcomings of chemical products, realizing a number of chemical products for people with a convenient time to tend to would bring a lot of potential trouble, so the Western developed countries in the first half of the 20th century, has already begun a "return to nature" campaign, for "green" and "ecological", "natural" growing calls in recent years is even more favorably. It also should be present system of incense, use of incense development.

Ketones

Aroma chemicalsFor a natural perfume, through chemical techniques to analyze, identify the chemical structure of their aromatic components, and then the corresponding chemical methods to produce compounds with the same structure, namely, synthetic fragrance. Aroma simulated multi-borrowed the name of natural fragrance name, such as musk ketone. Aroma chemicals can be broadly interpreted as a synthetic perfume.

In 1868, chemist Parkin in the UK the first use of coal tar to produce a aroma chemicals - coumarin (ie, p-coumaric lactone). So far, for the vast majority of natural spices, all produce weapons of a corresponding synthetic perfume. But also some of the synthetic perfume has not yet found in nature, the corresponding species, can be regarded as a true "artificial flavor."
The production of aroma chemicals , which aims to achieve a specific molecular structure of compounds, so its raw materials from natural plants and animals do not have to, but mostly coal chemical products and petrochemical products. As the raw materials readily available, so the output of synthetic spices and production rate are not subject to climatic, geographical and other natural factors, and cost has been greatly reduced, thus greatly expanding the scope of application of spices, so that people can enjoy their daily lives to the aromatic items increased significantly, and many no obvious smell of materials and items inside were actually added a aroma chemicals. Synthetic perfume industry has become a modern fine chemical industry is an important component.

Although the synthetic perfume came quickly swept through an entire spice industry, but it does not look like the original one as a real alternative to natural spices. Even at present the most advanced chemical technology to produce aroma chemicals are also out of impunity for traces of man-Fu Zao, its flavor difference between feeling and natural spices are still very obvious. Not only is the flavor on the differences in psychological perception, the difference between the two is more obvious: the natural spices often make people have a "pleasant", "moving" and a very subtle psychological experience, while the synthetic perfume had almost no such effect. This gap in the musk of the research process was very clearly demonstrated.

Natural musk deer musk deer is not only right, but also for people's mental and physical activities have a very sensitive influence has always been an extremely valuable spices. Early 20th century, the Swiss chemist discovered the musk component is mainly a fragrant musk ketone, and successfully conducted a synthetic. Many people believe that the magic of the effectiveness of musk from the musk ketone is generated. But when people try to lure musk deer musk ketone, when they did not succeed.
"Has its flavor without the gas, has its own shape without their god," is now the synthesis of perfume has always been an insurmountable barrier. Therefore, until today, brilliant synthesis of fragrant spice blend in the division would always do everything possible to join a number of natural spices, so bring up the flavor as much as possible to bring a bit dynamic and spirituality.

In fact, in terms of the value of natural spices, aromatic feeling anti-in the second, the real valuable is that it has the potential to affect human physical and mental systems. Through the appropriate compatibility, you can become a physical and mental nourishment and adjustment can be a tranquilizer, game, maintain good health. Therefore, from the "Shen Nong's Materia Medica" to "Compendium of Materia Medica", the vast majority of spices were close to traditional Chinese medicine, "fume" therapy is also widely adopted by physicians. In these respects, aroma chemicals. is even more difficult to catch up.

Synthetic and natural spices spices can not produce the same effect, a number of reasons.
On the one hand, natural flavor is a complex mixture, often involve a variety of compounds, the aroma of the ingredients is extremely complex, it was even likened it to a chaotic system to the current level of chemical and biological technology, it is difficult for its aroma ingredients to achieve complete and accurate analysis and grasp. Even for jasmine and rose fragrance, until now, every year there was a new element has been identified.

On the other hand, the effectiveness of natural spices, not only to the aroma of its own structure, but also the mechanisms and human sense of smell is closely related to related to the sense of smell and mental, and psychological systems and physical systems, a series of psychology and neuroscience areas. The psychology and neuroscience is the latest development in the category of natural sciences, but also far better to answer these questions.

However, it should be noted that although the natural spices derived from nature, but mankind can still use their wisdom to understand it, improve it, and use it. Looking forward to the future of science and technology to give people a real cheap incense "Jane," Now these machines do not have to let the incense stiff "material" disturbing view of the nose.

In recent years, more and more people have discovered the shortcomings of chemical products, realizing a number of chemical products for people with a convenient time to tend to would bring a lot of potential trouble, so the Western developed countries in the first half of the 20th century, has already begun a "return to nature" campaign, for "green" and "ecological", "natural" growing calls in recent years is even more favorably. It also should be present system of incense, use of incense development.