Concrete flavours

Reverchon E, Della-Porta G, Gorgoglione D. Supercritical carbon dioxide extraction of volatile oil from rose concrete. Flavour Fragrance J 1997 12 37-41. 

An official definition of essential oils and related products is available in ISO 9235 1997 Aromatic natural raw materials - Vocabulary . In this standard not only essential oils but also related solvent extracts like oleoresins, concretes, absolutes and resinoids are defined. To stress the impact of ISO standards for the quality management in the flavour industry, an overview of all relevant standards concerning essential oils is given in Table 3.27 at the end of this chapter. ... 

The esterification of cyclic olefins with carboxylic acids, such as dicyclopentadiene or naturally occurring terpenes, yields compounds of industrial value. For instance, the esterification of dicyclopentadiene with saturated carboxylic acids, such as acetic acid, leads to a starting material for the flavour and fragrance industry, as well as the resulting alcohols in consecutive hydrolysis. By using unsaturated carboxylic acids as nucleophiles, the resulting esters are also useful compounds in the manufacture of binders for polymer concrete (Scheme 1). ... 

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