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Type: Article

Spectroscopic characterisation of a rare monoterpene from Blumea Mollis

Beginning with earlier studies on the essential oil separated from different species of Blumea, this material has been the subject of many chemical and biological investigations. Chemical investigations of the oils of different Blumea species have afforded different terpenoids. Thus the oil of Blumea eriantha has a major constituent, d-carvotanacetone; oil of Blumea lacera contains the cineol, d-fenchone and citral; oil of Blumea malcolmii yielded d-carvotanacetone and 1-tetrahydrocarvone; and the oil of Blumea membranceae contains 1,4-(8)-p-methadiene; δ-cadinene; 2,3-dimethoxy-p-cymene; 1,2-dimethyl-3-isopropenyl cyclopent-1-en-4-one; 5-hydroxy-p-cymene-2-oxybornylene; 2-methyl-5-isopropyl cyclopent-1-one carbonylic acid methyl ester; and citronellyl acetate. But this monoterpene has not been reported yet.

Ru Supported Catalysts Testing in the Preparation of p-Isopropylcyclohexylmethanol

Optimizing the reaction conditions for this key aromatic material.

Molecule of the Month: 5-Isopropyl-2-methylphenol

Organoleptic profile and application areas.

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Excite Your Taste Buds While Wearing a FREE set of Apple Airpods

The Sigma-Aldrich® aroma chemicals team would like to offer two lucky winners a pair of Apple Airpods by showing their interest in our new products.

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1-(4-Isopropyl cyclohexyl) ethanol from Cumene in Two Steps

Due to its stability, this material finds use in a large number of products in the fragrance industry.

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Flavor Bites: Geranyl acetate

Containing a dominant rose note underlaid with fruity nuances, geranyl acetate is ideal for a range of floral, citrus, tropical fruit, berry and other flavor applications.

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Flavor Bites: Cinnamyl Acetate

While hardly effective as the main driver of a flavor, this ingredient can play an important secondary role in many flavors, adding depth and rounding out angular profiles.

Flavor Bites: alpha-Methylbenzyl acetate

This ingredient has multiple monikers and a similarly complex aroma character.

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Flavor Bites: Hexyl acetate

Combining the attractive characteristics of pear and banana, this ingredient works well together with several hexyl esters, including hexyl butyrate and hexanoate.

Flavor Bites: cis-3-Hexenyl acetate

The combination of green notes in many flavors can involve many additional green profile ingredients, but the balance between cis-3-hexenol and cis-3-hexenyl acetate is often central.

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Flavor Bites: Ethyl phenyl acetate

Though it shines in honey flavors, enhancing clove and bright floral notes, ethyl phenyl acetate’s soft profile in comparison to its fellow esters offers a wide range of applications, including hydrolyzed vegetable protein, green tea and more.

The Butyl Acetates

Butyl acetate: The use of lower aliphatic esters to create fruit flavors is most interesting and intriguing. Many of the flavors of our common fruits can be mimicked using a number of mixtures of completely different groups of these esters.

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Symrise's Caramel acetate

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Flavor Bites: Benzyl acetate

Though this ingredient is mostly associated with berry flavors, its characteristics can provide a striking berry nuance in a variety of non-fruit flavors.

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Flavor Bites: Para-mentha-8-thiol-3-one acetate

Though similar to para-mentha-8-thiol-3-one in odor profile, para-mentha-8-thiol-3-one acetate is more heat stable and is less prone to H2S loss on storage.

The whole area of tea flavors is the most obvious focal point for linalyl acetate.

Linalyl Acetate in Floral, Citrus and Berry Flavors

Discover John Wright's December 2022 column on linalyl acetate's versatility.

In cherry flavors, butyl acetate plays a secondary role, and levels range from 30 ppm to 100 ppm.

Butyl Acetate in Fruit & Non-Fruit Flavors

This ester is very effective when used in combination with iso-amyl acetate in a wide range of flavors.

The panel likes maltyl isobutyrate for sweet brown flavors such as French vanilla, brown or cooked sugar, maple, butterscotch, caramel, coffee, molasses, chocolate and malt.

Flavorist Panel Evaluates Neryl Propionate, 3-Mercaptohexyl Acetate and More Materials

See the latest roundup of organoleptic characteristics of flavor materials.

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