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Characterization of Turkish Virgin Olive Oils Produced from Early Harvest Olives

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Journal of the American Oil Chemists' Society

Abstract

Olives were collected from various districts of Turkey (North and South Aegean sub-region, Bursa-Akhisar, South East Anatolia region) harvested over seven (2001–2007) seasons. The aim of this study was to characterize the chemical profiles of the oils derived from single variety Turkish olives including Ayvalik, Memecik, Gemlik, Erkence, Nizip Yaglik and Uslu. The olive oils were extracted by super press and three phase centrifugation from early harvest olives. Chosen quality indices included free fatty acid content (FFA), peroxide value (PV) and spectrophotometric characteristics in the ultraviolet (UV) region. According to the FFA results, 46% (11 out of 24 samples) were classified as extra virgin olive oils; whereas using the results of PV and UV, over 83% (over 19 of the 24 samples) had the extra virgin olive oil classification. Other measured parameters included oil stability (oxidative stability, chlorophyll pigment, pheophytin-α), cis–trans fatty acid composition and color index. Oxidative stability among oils differed whereas the cis–trans fatty acid values were within the national and international averages. Through the application of two multivariate statistical methods, Principal component and hierarchical analyses, early harvest virgin olive oil samples were classified according to the geographical locations categorized in terms of fatty acid profiles. Such statistical clustering gave rise to defined groups. These data provide evidence of the variation in virgin olive oil quality, especially early harvest and cis–trans isomers of fatty acid profiles from the diverse agronomic conditions in the olive growing regions of Turkey.

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References

  1. Boskou D (1996) Olive oil chemistry and technology. AOCS Press, Champaign, Illinois

    Google Scholar 

  2. Kiritsakis AK (1998) Olive oil: from the tree to the table. Food & Nutrition Press, Trumbull

    Google Scholar 

  3. Anonymous (1990) The Official Gazette of Republic of Turkey, Number 20507, 3 May 1990. Ankara

  4. Canözer Ö (1991) The catalogue of standard olive cultivars. Ministry of Agriculture and Rural Affairs. The General Directorate of Agricultural Production and Development. Professional publications no.: 334, Ankara, p 104

  5. http://www.oliveoilsource.com/definitions.html. Accessed 04 April 2008

  6. Çiftçioğlu G (1997) The researches on the determination of qualitative and quantitative levels of the trans fatty acids in virgin olive oils. 10.2700.050 Unpublished M.Sc. thesis, Ege University Graduate School of Natural and Applied Sciences. Bornova-İzmir, p 50

  7. Anonymous (2001) The specification of Turkish commercial virgin olive oils for 2000/2001 crop year (unpublished data). İzmir Mercantile Exchange. Department of R&D Systems, İzmir

  8. Diraman H and Hişil Y (2004) The researches on the determination of trans fatty acids in olive oils produced from different systems in Aegean region. Project no TAGEM/GY/00/14/041, issue no. 123. Olive Research Institute, Bornova-İzmir, p 96

  9. Diraman H (2006) An investigation on total chlorophyll and pheophytin α contents of Turkish commercial virgin olive oils produced by means of different systems during three harvest years. In: AOCS world conference and exhibition on oil seed and vegetable oil utilization, processing, by-products, biodiesel, specialty and functional oils, and new applications and technologies, In Abstract Book p 17, 14–16 August 2006. Hilton İstanbul Convention and Exhibition Centre, İstanbul, Turkey. http://www.aocs.org/archives/istanbul/istanbul_abstracts.pdf. Accessed 04 Jan 2008

  10. Zengin M (2006) The regional characterisation of virgin olive oil (in Turkish). National olive and olive oil symposium and exhibition, September 15–17, Izmir, Turkey. In: M. Gül, S. Umdu (eds) Symposium book, pp 317–325

  11. Gürdeniz G, Ocakoğlu D, Kadiroğlu P, Korel F, Tokatlı F, Özen B (2006) Properties of commercial extra virgin olive oils produces in the Aegean region of Turkey. In: National olive and olive oil symposium and exhibition, September 15–17, Izmir, Turkey. In: M.Gül, S.Umdu (eds) Symposium book, pp 577–586

  12. Diraman H (2007) The studies on oxidative stability and free acidity levels of commercial virgin olive oils produced by various extraction systems in different region of Turkey. Gida 32:63–74

    Google Scholar 

  13. Diraman H, Saygi H, Hişil Y (2008) A Chemometric classification on virgin olive oils of Izmir province according to the fatty acid composition. Gida 33:109–115

    Google Scholar 

  14. Ersoy N, Çavuşoğlu A, Arsel AH, Ersoy B (2001) Comparative trial of Mediterranean olive cultivars. Olive Research Institute project no. TAGEM/IY/96/06/05/005

  15. Saygın Gümüşkesen A, Yemişçioğlu F (2007) The regional characterization of olive varieties and olive oils in Turkey (Final report). http://www.egeliihracatcilar.com/Images/Menu1Page//TurkiyedekiZeytinCesitlerininVeZeytinyaglarininBolgeselKarakterizasyonu_00001680.zip. Accessed 03 Jan 2008

  16. Diraman H (2007) Comparison with the oils of other domestic olive varieties of oxidative stability of virgin olive oils produced from Gemlik olive variety. Electron J Food Technol 2(3):53–59. http://ejftteknolojikarastirmalar.com/download.php?File=020307_8_diraman_tr.pdf. Accessed 04 Jan 2008

  17. Dıraman H, Ozdemir D, Hişil Y (2007) Classification of important domestic and foreigner olive varieties in national genetic bank of Turkey according to the fatty acid composition and squalene levels with chemometric methods. Acad Food 28:21–27

    Google Scholar 

  18. Škevin D, Rade D, Strucelj D, Mokrovcak Z, Nederal S, Bencic D (2003) The influence of variety and harvest time on the bitterness and phenolic compounds of olive oil. Eur J Lipid Sci Technol 105:536–541

    Article  Google Scholar 

  19. EEC Regulation no 796 of 6 May 2002 on change. E.C. regulation no. 2568/91. Official Journal of the European Communities, L 128/8 15/05/02 2002, Brussels, Belgium

  20. Psomiadou E, Tsimidou M (2001) Pigments in Greek olive oils: occurrence and levels. J Sci Food Agric 81:640–647

    Article  CAS  Google Scholar 

  21. Gutiérrez Gonzalez-Quijano R, Gutiérrez Rosales F (1986) A rapid method for defining and classifying olive oil color. Grasas y Aceites 37:282–284

    Google Scholar 

  22. Meastri DM, Labuckas DO, Meriles JM, Lamarque AL, Zygadlo JA, Guzman CA (1998) Seed composition of soybean cultivars evaluated in different environmental conditions. J Sci Food Agric 77:494–498

    Article  Google Scholar 

  23. SPSS (2001) Base 12.0 applications guide. SPSS, Chicago

  24. Angerosa F, Mostallino R, Basti C, Vito R, Serraiocco A (2000) Virgin olive oil differentiation in relation to extraction methodologies. J Sci Food Agric 80:2190–2195

    Article  CAS  Google Scholar 

  25. MathWorks (2007) Matlab 7.5.0 (R2007b), The MathWorks, Boston

  26. International Olive Oil Council, Trade standard applying to olive oils and olive–pomace oils. COI/T.15.NC No 3/Rev. 1, 2003. http://www.internationaloliveoil.org. Accessed Jan 2008

  27. Anonymous (2007) Turkish food codex communique on olive oil and pomace oil. The Official Gazette of Republic of Turkey, Number 26602, 03 Aug 2007, Ankara

  28. Gutierrez F, Jimenez B, Ruiz A, Albi MA (1999) Effect of olive ripeness on the oxidative stability of virgin olive oil extracted from the varieties Picual and Hojiblanca and on the different components involved. J Agric Food Chem 47:121–127

    Article  CAS  Google Scholar 

  29. Gimeno E, Castellote AI, Ramuela-Raventos RM, De La Torre MC, Lopez-Sabater MC (2002) The effects of harvest and extraction methods on the antioxidant content (phenolics, α-tocopherol, and β-carotene) in virgin olive oil. Food Chem 78:207–211

    Article  CAS  Google Scholar 

  30. Ceci LN, Carelli AA (2007) Characterization of monovarietial Argentinian olive oils. from new productive zones. J Am Oil Chem Soc 84:1125–1136

    Article  CAS  Google Scholar 

  31. Laroussi S, Grati Kamoun N, Salam MM, Ben Slama M, Arous N, Rekik H, Hamd M, Bousselmi A, Laaouni B (2006) Study of the behaviour of Arbequina olive variety in different regions of Tunisia. In: Proceedings of Olivebioteq 2006, second international seminar ‘‘Biotechnology and quality of olive tree products around the Mediterranean basin’’ 5–10 Nov 2006, Marsala-Mazara del Vallo, Italy, vol 2, pp 143–147

  32. Kamoun G (2007) Evolution of physico-chemical characteristics of some Tunisian olive oils during storage. In: Proceedings of Olivebioteq 2006, second international seminar ‘‘Biotechnology and quality of olive tree products around the Mediterranean basin’’, 5–10 Nov 2006, Marsala-Mazara del vallo, Italy, vol 2, pp 405–410

  33. Tawalbeh YH, Al-Ismail K, Al-Saed A (2006) Effect of variety and harvesting time on the oxidative stability of olive oil. In: Proceedings of Olivebioteq 2006, second international seminar ‘‘Biotechnology and quality of olive tree products around The Mediterranean Basin’’, 5–10 Nov 2006, Marsala-Mazara del vallo, Italy, vol 2, pp 383–387

  34. Acar H, Ersoy B (1996) Research on the determination of organoleptic characteristics of the oils extracted from some important olive cultivars in Aegean region (Turkey). Olivae 64:46–51

    Google Scholar 

  35. Ollivier D, Artaud J, Pinatel C, Durbec JP, Guèrère M (2003) Triacylglycerol and fatty acid compositions of French virgin olive oils. Characterisation by chemometrics. J Agric Food Chem 51:5723–5730

    Article  CAS  Google Scholar 

  36. Romero MP, Tovar MJ, Ramo T, Motilva MJ (2003) Effect of crop season on the composition of virgin olive oil with protected designation of origin ‘‘Les Garrigues’’. J Am Oil Chem Soc 80:423–430

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Department of Olive Oil Technology, Research Institute for Olive Culture, 35100, Bornova, Izmir, Turkey

    Harun Dıraman

  2. Department of Computer Engineering, Faculty of Engineering, Boğaziçi University, 34342, Bebek, İstanbul, Turkey

    Hamdi Dibeklioğlu

Authors
  1. Harun Dıraman
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  2. Hamdi Dibeklioğlu
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Correspondence to Harun Dıraman.

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Dıraman, H., Dibeklioğlu, H. Characterization of Turkish Virgin Olive Oils Produced from Early Harvest Olives. J Am Oil Chem Soc 86, 663–674 (2009). https://doi.org/10.1007/s11746-009-1392-5

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  • DOI: https://doi.org/10.1007/s11746-009-1392-5

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