Media type: E-Article Title: Determination of growing location of marjoram (Origanum majorana L.) samples by comparison of essential oil profiles Contributor: Novak, Johannes; Pank, Friedrich; Langbehn, Jan; Blüthner, Wolf‐Dieter; Vender, Carla; Van Niekerk, Léon; Junghanns, Wolfram; Franz, Chlodwig Published: Wiley, 2004 Published in: Flavour and Fragrance Journal, 19 (2004) 3, Seite 263-267 Language: English DOI: 10.1002/ffj.1303 ISSN: 0882-5734; 1099-1026 Keywords: General Chemistry ; Food Science Origination: Footnote: Description: AbstractA canonical discriminant function analysis (CDA) was applied to essential oil compounds profiles to determine the growing location of marjoram samples. 12/21 essential oil compounds were integrated into two discriminant functions as the best predictors for geographical differences. Stepwise integration allowed the determination of the essential oil compounds mainly responsible for the geographical variation, viz. myrcene, terpinene‐4‐ol, γ‐terpinene and p‐cymene. The two discriminant functions themselves showed a strong association between the locations and the predictors. The two functions allowed a correct classification of 95% of samples (cross‐validated). The high positive classification rate demonstrates the CDA's ability as a quality assurance tool enabling authenticity control. Copyright © 2004 John Wiley & Sons, Ltd.