3. Bioconversions of agricultural precursors into flavor compounds

With a few exceptions, such as cloves and vanilla beans, most biosynthetically-produced odor compounds are only present in very low concentrations in the producing organism. It is therefore uneconomical to purify molecules of interest from these sources. What is observed in plants is also observed in micro-organisms. Nevertheless, it is often possible to find more or less direct precursors of the molecules of interest for bioconversion. In such cases, concentrations can exceed 10 g/L and production rates of the order of 1 g/(L · h). One of the difficulties with this approach is obtaining sources of precursors in sufficient quantities and at prices compatible with the value of the resulting product.

The problems involved in converting a substrate into aroma compounds can be summarized as follows:

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Bioconversions of agricultural precursors into flavor compounds

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Conclusions and outlook

Bibliography

(1) - ALEWIJN (M.), SMIT (B.A.), SLIWINSKI (E.L.), WOUTERS (J.T.M.) - The formation mechanism of lactones in Gouda cheese. - Int. Dairy J., 17, p. 59-66 (2007).
(2) - BARATTI (J.), BUONO (G.), DELEUZE (H.), LANGRAND (M.), SECCHI (M.), TRIANTAPHYLIDES (C.) -...

Events

In Europe

Fi Europe exhibition http://www.ingredientsnetwork.com

International Weur man Flavour Research Symposium http://www.weurman2008.ethz.ch

Pangborn Sensory Science Symposium

Standards and norms

Standards compendium

Ingrédients et additifs alimentaires - 3192611 - 11-1999

Regulations

Council Directive 88/388/EEC of June 22, 1988 on the approximation of the laws of the Member States relating to flavourings for use in foodstuffs and to source materials for their production (published in OJEC No. L 184 of July 15, 1988).

Regulation (EC) No 2065/2003 of the European Parliament and of the Council of 10 November 2003 on smoke flavourings used or intended for use in or on foods (OJ L...

Patents

FERON (G.), BLIN (C.), MAUVAIS (G.) and GELO-PUJIC (M.). – Process for the preparation of an aromatic compound precursor by biosynthesis. INRA patent, Patent FR 06 50237 (2006).

GROSS (B.), ASTHER (M.), CORRIEU (G.) and BRUNERIE (P.). – Production of vanillin by bioconversion of benzene precursors. European Patent, n° 0453368A1 (1991).

KERKENAAR (A.), SCHMEDDING (D.J.) and BERG...