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Type: Article

Section: Fragrance > Ingredients

A peep into p-menth-1-ene chemistry

When Semmler elucidated the structure of p-menth-1-ene by oxidative degradation in 1903, little was it thought that this simple hydrocarbon would serve as a substrate for the exciting researches which we have delineated. Today, scientists devoted to aroma chemistry are well aware of the sensory properties pertaining to odor and taste of the products mentioned in this paper. Available readily in optically active and inactive forms, p-menth-1-ene still challenges us with problems of far-flung consequences.

Acetals and Ketals of 3β, 4β-caranediol-New Odoriferous Compounds from (+)-3-carene

In summary, it is noteworthy that the odor characteristics of acetals and ketals of bicyclic terpenic diols have been absent in the literature. Our discovery of interesting odors of ketals of (+)-3β,4β-caranediol indicates further potential possibilities of synthesis of new odoriferous compounds in the series of bicyclic terpenic diols.

Resin Acid in Tree Moss Extract

Lichens are symbiotic organisms of fungi and algae. The biological significance of lichens and their metabolites has been reviewed by Huneck, who even stated that “good perfumes require lichen extracts.”

Aleuritic Acid in Perfumery and Pheromones

The brief account given above indicates the vast potential which aleuritic acid holds in the synthesis of numerous useful organic compounds possessing olfactory properties. With a steady and substantial availability of threo aleuritic acid, its utility is expected to increase enormously.

Fragrant Esters of 3-Cyclohexylbutanoic Acid

Thus, the acid is not too easily available, but remarkable fragrant properties of its esters raise the interest in its production. The first four stages of its synthesis have been described previously. Prin’s reaction of α-methylstyrene with formaldehyde yields 4-methyl-4-phenyl-1,3-dioxane.

iso-Valeric acid makes a subtle, but very useful, contribution to hazelnut flavors at 100 ppm.

iso-Valeric Acid in Dairy, Brown, Nut, Savory, Alcoholic Drink & Fruit Flavors

The profile of iso-valeric is very much stereotypical of the primary cheese odor, without any hint of the faint goaty character that starts to creep into the series of aliphatic acids from six carbon atoms upwards.

HESP—A New Essential Oil From the Acid Hydrolysate of Spent Sandal Heartwood

In the present study, the utilization of the spent (exhausted) sandalwood powder from steam distillation as a source of an acid hydrolysate oil is examined. It has been found that hydrolysis of the non-volatile portion of an acetone extract of the spent sandalwood powder with methanolic hydrochloric acid followed by steam distillation gave rise to a new essential oil (1.2% yield) which we have called HESP, the acronym for hydrolyzed exhausted sandalwood powder.

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Synthesizing Mayol from Cuminaldehyde

The authors discuss two distinct preparations of the widely used muguet ingredient from cuminaldehyde.

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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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Citrus Taste Solutions in Times of Declining Availability

The industry’s biggest hope might not come from botanical alternatives or more efficient extraction, but rather a synthesis of aroma chemicals and flavoring preparations in a natural way.

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Chemical Characterization of Vanilla pompona Scheide, Part IV

Vanilla pompona is resistant to climate change and diseases, and therefore is preferred for hybridization with V. planifolia. Its chemical characterization was carried out in a series of studies, described in this last of four parts.

Vanilla flavor is dominated by phenols and their transformation products mostly derived from enzymatic hydrolysis of the phenyl-β-D-glucosides. Cocoa bean flavor is dominated by Strecker aldehydes and pyrazines and other products generated during the roasting process of the beans.

Extracting the Essence: Comparing Vanilla and Cocoa Processes

Understanding the similarities and differences in biochemistry, chemistry and curing processes of vanilla and cocoa may offer insight into producing high-quality materials.

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Discovery of Nympheal: The Definitive Muguet Aldehyde

This is the story of Nympheal, which offers with its diffusive fresh, watery-floral, lily-of-the-valley odor a regulatory robust alternative to the existing muguet aldehydes.

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