Isoamyl acetate flavour

Esters also constitute a group of important flavour compounds. They are the main aroma components found in fruits (apples, pears,. ..). For example, bananas contain 12-18 ppm acetates. The price of the pure flavour compounds, when isolated from fruit, can range between 10,000 and 100,000 US /kg In the past, research has been carried out by our group about the microbial production of fruity esters by the yeast Hansenula mrakii and the fungus Geotrichum penicillatum [10]. A fermentation was developed whereby fusel oil was continuously converted into a mixture of 3-methylbutyl acetate (isoamyl acetate) and 2-methylbutyl acetate, the character impact compounds of banana flavour. 

Tutti Frutti is another fantasy flavour combination, non existant in nature. It is mainly used in chewing gums. The name suggests a mixture of all fruits. In fact it is mainly a balanced mixture of isoamyl acetate with orange oil, lemon oil and vanillin. 

Harrison and Hills [64] developed a mathematical model to describe flavour release from aqueous solutions containing aroma-binding macromolecules. Seuvre et al. [65] reported that the retention of flavouring substances (benzaldehyde, isoamyl acetate. 

Another approach has been limited to the correlation of the headspace volatiles with flavour characteristics [30, 58]. Of the substances distinguished on the gas chromatograms the levels of the isoamyl alcohols, ethyl acetate, isoamyl acetate, and isobutanol have been shown to be important in the discriminant analyses discussed above. p-Phenylethanol and ethyl caprylate are not sufficiently volatile to be included in headspace analyses [39]. In this method [30, 58] the peak areas on the chromatograms were expressed as the percentage of the total peak area (excluding ethanol and the internal standard xylene). A chronologically updated data base was used to calculate... 

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