Essential Oils Expert Working Group

Aims and Intentions

The aims of the Expert Working Group are the elaboration and validation of analytical methods to determine the quality and authenticity of traded essential oils.  This is mainly by the use of gas chromatography and has included the publication of fingerprint chromatograms, obtained under standard conditions, and the quantitative determination of individual components of interest.

The Expert Working Group responds to requests from the essential oils trade and demands arising from new legislation.

Individual members participate in committee meetings and working groups of the main trade associations of the flavour and fragrance industry and represent the UK at meetings of international and European standards and regulatory bodies.  These include the ISO, CEN, BSI, IFEAT, IFRA, EFFA, EFEO, IOFI, RIFM and BEOA.

The Expert Working Group is, therefore, in a strong position to influence decisions made by these bodies, exchange information and avoid duplication of effort.  Members comment on draft standards and monographs making recommendations on the UK vote as appropriate.

Membership of the Expert Working Group

Membership of the Essential Oils Expert Working Group, as of 1 May 2019:

Michael MilchardChairman
Neil DaCostaInternational Flavors & Fragrances Inc (corresponding member)
Philippe MerleFirmenich, Geneva
Glen MoranCPL Aromas Ltd
Nick MossAromatic Ingredients
David MoylerConsultant
Neil OwenGivaudan Ltd
Nick RoachFragrance Oils (Int.) Ltd
Alan SherlockConsultant (ex-R C Treat Ltd)
Tracey SmithR C Treat Ltd

Barry Starr

James Webb

Consultant (ex-Fragrance Oils (Int.) Ltd)

F D Copeland & Sons Ltd

Roger Wood OBESecretary

Essential Oils Expert Working Group Reports

A: Current Series of Reports on the Application of Gas-Liquid Chromatography to the Analysis of Essential Oils

All published in the Analyst, unless otherwise stated

  • Part I.   Determination of Cedrol 1971, 96, 887
  • Part II.  Determination of 1,8-Cineole in Oils of Cardamom, Rosemary, Sage and spike Lavender 1973, 98, 616
  • Part III.  The Determination of Geraniol in Oils of Citronella 1973, 98, 823
  • Part IV.  Determination of Eugenol in Oil of Bay 1975, 100, 593
  • Part V.  Determination of 1,8-Cineole in Oils of Lavender and Lavandin 1977, 102, 607
  • Part VI.  Determination of Limonene and 1,8-Cineole in Oils of Peppermint 1978, 103, 375
  • Part VII.  Fingerprinting of Essential Oils by Temperature-programmed Gas-Liquid 
    Chromatography using a Carbowax 20M Stationary Phase 1980, 105, 262
  • Part VIII Fingerprinting of Essential Oils by Temperature-programmed Gas-Liquid 
    Chromatography using Methyl Silicone Stationary Phases 1981, 106, 448
  • Part IX  Determination of Eugenol in Oil of Cinnamon Bark 1981, 106, 456
  • Part X Fingerprinting of Specified Essential Oils by Standardised procedures 1984, 109, 1339
  • Part XI. Monographs for Seven Essential Oils 1984, 109, 1343
  • Part XII Determination of Patchouli Alcohol in Oil of Patchouli 1987, 112, 1315
  • Part XIII Determination of Octan-3-ol in Oils of Peppermint and Mint 1998, 113, 657
  • Part XIV Monographs for Five Essential Oils 1998, 113, 1225
  • Part XV Determination of “Rhodinol” in Oils of Geranaium 1990, 115, 459
  • Part XVI  Monographs for Five Essential Oils 1993, 118, 1089
  • Part XVII Fingerprinting of Essential Oils by Temperature-programmed Gas-Liquid Chromatography 
    using Capillary Columns with Non-polar Stationary Phases 1997, 122, 1167
  • Part XVIII  Determination of safrole in oils of cinnamon leaf, Litsea cubeba, and nutmeg  2002, 127, 428
  • Part XIX Fingerprints of 12 essentials oils Perfumer & Flavorist  2004, 29 (5), 28
  • Part XX GLC fingerprint chromatograms of five essential oils Perfumer & Flavorist   2010, 35 (5), 34
  • Part XXI GLC fingerprint chromatograms of six essential oils Perfumer & Flavorist   2010, 35(6), 34
  • Part XXII. Determination of the 16 Alleged Skin Sensitizers in essential oils Perfumer and Flavorist 2012, 37 (6), 48
  • Part XXIII. Fingerprint GLC of selected Essential Oils intended for REACH registration (to be submitted for publication)      


Application of High Performance Liquid Chromatography to the Analysis of Essential Oils

  • Part I Determination of Bergaptene 
     (4-Methoxyfurfuro[3.2-g]chromen-7-one) (8-Methoxysporalen) 
     in Oils of Bergamot 1987, 112, 195.           


B: Historic Reports

All published in the Analyst

Estimation of Cineole (1) Cajuput and Eucalyptus Oils

1927, 52,276               

Physical Constants (1)1927, 52, 530
Physical Constants (2)1929, 54, 335
Determination of Acetylisable Constituents in Essential Oils1928, 53, 214
Determination of Phenols in Essential Oils1928, 53, 215
Determination of Citral in Lemon Oil1930, 55, 109
Determination of Solubilities1930, 55, 386
Determination of Cincole in Essential Oils (2) Camphor Oil (3) Other Oils1931, 56, 738
Determination of Carvone and Menthone1932, 57, 378
Determination of Citronellal1932, 57, 773
Determination of Aldehydes Other than Citronellal1934, 59, 105
Determination of Ascaridole1936, 61, 179
Determination of Esters1937, 62, 541
Solubility Test for Ceylon Citronella Oil1945, 70, 442
Determination of Linalol in Essential Oils1957, 82, 325
Application of Gas-Liquid Chromatography to Essential Oil Analysis1959, 84, 690
Fiore Method for Determining Linalol1960, 85, 165
Drying Agents for Essential Oils1964, 89, 233
The Determination of Linalol in essential Oils1964, 89, 510
Spectral Characteristics of Eugenol1966, 91, 214