Comparison of the Virgin Olive Oils Obtained From Different Points of Common Oil Production Systems (in English)

Year 2013, Volume: 38 Issue: 2, 79 - 85, 01.04.2013

Mustafa Öğütçü Buket Aydeniz Emin Yılmaz

Abstract

Virgin olive oil samples were obtained from different sites (exit of malaxer, decanter and centrifuge) of different oil production systems (2- and 3-phase centrifugation and classical press systems). Physical (turbidity, instrumental color and smoke point) and chemical properties (antioxidant capacity, total phenolics and free fatty acid) and sensory bitterness values of the samples were measured. Total phenolic contents and antioxidant capacities were found to be significantly different among the samples obtained from different production sites. In general, samples collected from the malaxer exits were more turbid, higher in total phenolics and antioxidant capacity values. There were statistically significant relations between bitterness and total phenolic content of the samples.

Keywords

Olive oil · Different production point · Bitterness · Natural adsorbent · Quality

Yaygın Üretim Sistemlerinin Farklı Noktalarından Alınan Natürel Zeytinyağlarının Karşılaştırılması (İngilizce)

Abstract

Natürel zeytinyağı örnekleri farklı üretim sistemlerinin (klasik pres sistemi, iki ve üç faz kontinü sistem) farklı noktalarından (malaksör, dekantör ve santrifüj) alınarak elde edilmiştir. Elde edilen örneklerin fiziksel (bulanıklık, renk ve dumanlanma noktası), kimyasal özellikleri (serbest yağ asitliği, toplam fenol içeriği ve toplam antioksidan kapasitesi) ile duyusal olarak acılık düzeyleri belirlenmiştir. Genel olarak, malaksör çıkışından alınan örneklerin daha bulanık, toplam fenol içeriğinin ve antioksidan kapasitelerinin daha fazla olduğu belirlenmiştir. Toplam fenol içeriği ile acılık arasında istatistiksel olarak doğrusal bir ilişkinin bulunduğu belirlenmiştir.

Keywords

Zeytinyağı, Farklı üretim sistemleri, Acılık, Doğal adsorber, Kalite.

References

• Boskou D. 1996. Olive Oil: Chemistry and Technology. AOCS Press, Champaign, IL, US.
• Salvador MD, Aranda F, Gomez-Alonso S, Fregapane G. 2003. Influence of Extraction System, Production Year and Area on Cornicabra Virgin Olive Oil: A Study of Five Crop Seasons. Food Chem80:359–366.
• Pehlivan B, Yılmaz E. 2010. Comparison of Oils Originating from Olive Fruit by Different Production Systems. J Am Oil Chem Soc 87:865- 875.
• Carlo MD, Sacchetti G, Mattia CD, Compagnone D, Mastrocola D, Liberatore L, Cichelli A. 2004. Contribution of the Phenolic Fraction to the Antioxidant Activity and Oxidative Stability of Olive Oil. J Agric Food Chem 52:4072–407.
• Ö¤ütcü M, Yılmaz E. 2009. Path Analysis for the Behavior of Traditional Olive Oil Consumer in Çanakkale. Food Sci Technol Res 15(1):9-2.
• AOCS, 1984. Official Methods and Recommended Practices. The American Oil Chemists’ Society. Champaign, IL.
• Spanos GA, Wrolstad RE. 1990. Influence of Processing and Storage on the Phenolic Composition of Thompson Seedless Grape Juice. J Agric Food Chem38: 1565-1571.
• Rice-Evans C, Re R, Pellegrini N, Proteggente A, Pannala A, Yang M. 1999. Antioxidant Activity Applying an Improved ABTS Radical Cation Decolorization Assay. Free Radic Biol Med 26:1231-1237.
• IOOC, 1992. Organoleptic Assessment of Olive Oil. International Olive Oil Council, COI/T20/ Doc no. 3/Rev. 2, Madrid (Spain) 28.5.1992.
• SPSS, 2009. PASW statistics 18. SPSS Inc., Chicago.
• Gordillo B, Ciaccheri L, Mignani AG, Gonzalez- Miret ML, Heredia FJ. 2011. Influence of Turbidity Grade on Color and Appearance of Virgin Olive Oil. J Am Oil Chem Soc DOI 10.1007/s11746-011- 1787-y.
• Kayahan M, Tekin A. 2006. Zeytinya¤ı Üretim Teknolojisi(Olive Oil Production Technology). GMO Pub, Ankara.
• TGK, 2007. Official Notification of the Control Criteria of Frying Fats/Oils. Turkish Food Codex no: 2007/41.
• Giovacchino DL, Sestili S, Vincenzo DD. 2002. Influence of Olive Processing on Virgin Olive Oil Quality. Eur J Lipid Sci Technol 104:587-602.
• Ögütçü M, Mendefl M, Yilmaz E. 2008. Sensorial and Physicochemical Characterization of Virgin Olive Oils Produced in Çanakkale. J Am Oil Chem Soc85:441-456.