Effects of Olive Variety, Harvest Time, and Malaxation Temperature on Volatile Compounds and Sensorial Characteristics of Olive Oils

dc.contributor.advisor Korel, Figen
dc.contributor.author Yıldız, Gamze
dc.date.accessioned 2015-12-28T07:49:38Z
dc.date.available 2015-12-28T07:49:38Z
dc.date.issued 2015
dc.description Thesis (Master)--Izmir Institute of Technology, Food Engineering, Izmir, 2015 en_US
dc.description Full text release delayed at author's request until 2017.08.23 en_US
dc.description Includes bibliographical references (leaves: 76-83) en_US
dc.description Text in English; Abstract: Turkish and English en_US
dc.description xii, 85 leaves en_US
dc.description.abstract In this study, it was aimed to determine the differences between sensory properties of olive oils based on types of olives, malaxation temperature and harvest time. Olive oil samples were extracted from two different Turkish olive cultivars (Ayvalık and Memecik), provided by Tariş Olive and Olive Oil Agricultural Sales Cooperatives Union. Olives which were harvested at three different stages of ripening (early (first harvest time), mid (second harvest time) and late (third harvest time)) were extracted at three different malaxation temperatures (27°C, 37°C, 47°C). Samples were classified into eighteen groups by two olive varieties, by three harvest time and malaxation temperatures. Totally, 36 samples (18 treatments × 2 replicates) were obtained from two parallel extraction processes. The effects of cultivar, malaxation temperature and harvest time on volatile composition, sensory properties and color of olive oils were investigated. SIMCA 13.0.3 (Umetrics AB, Umeå, Sweden) and multilevel factorial experimental design were used for data analysis and result interpretation. As a conclusion, it was found that cultivar and harvest time of olives had a significant effect on sensorial characteristics of olive oils. However, no obvious effect of malaxation temperature was observed. en_US
dc.description.abstract Bu çalışmada, zeytin çeşidine, malaksasyon sıcaklığına ve hasat zamanına bağlı olarak zeytinyağların duyusal özellikleri arasındaki farklılıkları belirlemek amaçlanmıştır. Zeytinyağı örnekleri Tariş Zeytin ve Zeytinyağı Tarım Satış Kooperatifleri Birliği tarafından sağlanan iki farklı Türk zeytin çeşidinden (Ayvalık ve Memecik) elde edilmiştir. Üç farklı olgunluk dönemine (erken (birinci hasat zamanı), orta ( ikinci hasat zamanı) ve geç (üçüncü hasat zamanı)) göre hasat edilen zeytinler, üç farklı malaksasyon sıcaklığında (27°C, 37°C, 47°C) sıkılmıştır. Örnekler iki zeytin çeşidi ile üç hasat zamanı ve üç malaksasyon sıcaklığında onsekiz gruba ayrılmıştır. Toplamda 36 numune (18 uygulama × 2 paralel), iki paralel ekstraksiyon işleminden edilmiştir. Zeytin çeşidinin, malaksasyon sıcaklığının ve hasat zamanının zeytinyağların uçucu bileşenleri, duyusal özellikleri ve rengi üzerindeki etkisi araştırılmıştır. Veri analizi ve sonuçları yorumlamada SIMCA 13.0.3 (Umetrics AB, Umeå, Sweden) ve çok seviyeli faktöriyel tasarım kullanılmıştır. Sonuç olarak, zeytinin hasat zamanının ve çeşidinin, zeytinyağın duyusal özellikleri üzerinde önemli bir etkisi vardır. Bununla birlikte, malaksasyon sıcaklığının belirgin bir etkisi gözlemlenmemiştir. en_US
dc.identifier.citation Yıldız, G. (2015). Effects of olive variety, harvest time, and malaxation temperature on volatile compounds and sensorial characteristics of olive oils. Unpublished master's thesis, İzmir Institute of Technology, İzmir, Turkey en_US
dc.identifier.uri https://hdl.handle.net/11147/4438
dc.language.iso en en_US
dc.publisher Izmir Institute of Technology en_US
dc.rights info:eu-repo/semantics/openAccess en_US
dc.subject Olive variety en_US
dc.subject Harvest time en_US
dc.subject Malaxation temperature en_US
dc.subject Volatile compounds of olive oil en_US
dc.subject Sensorial characteristics of olive oil en_US
dc.title Effects of Olive Variety, Harvest Time, and Malaxation Temperature on Volatile Compounds and Sensorial Characteristics of Olive Oils en_US
dc.title.alternative Zeytin Çeşidinin, Hasat Zamanının ve Malaksasyon Sıcaklığının Zeytinyağların Uçucu Bileşiklerine ve Duyusal Özelliklerine Etkileri en_US
dc.type Master Thesis en_US
dspace.entity.type Publication
gdc.author.institutional Yıldız, Gamze
gdc.coar.access open access
gdc.coar.type text::thesis::master thesis
gdc.description.department Thesis (Master)--İzmir Institute of Technology, Food Engineering en_US
gdc.description.publicationcategory Tez en_US
gdc.description.scopusquality N/A
gdc.description.wosquality N/A
relation.isAuthorOfPublication.latestForDiscovery 6952e11a-9fd2-408f-9140-eba95dc4d277
relation.isOrgUnitOfPublication.latestForDiscovery 9af2b05f-28ac-4019-8abe-a4dfe192da5e

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