Microbiological monitoring of olive fermentation process of Gemlik type dry-salted black olives and investigation of the effect of pasteurization on the product’s shelf life

dc.contributor.buuauthorAlak, Sibel
dc.contributor.buuauthorUylaşer, Vildan
dc.contributor.departmentUludağ Üniversitesi/Ziraat Fakültesi/Gıda Mühendisliği Bölümü.tr_TR
dc.date.accessioned2021-05-20T09:07:21Z
dc.date.available2021-05-20T09:07:21Z
dc.date.issued2017-11-17
dc.description.abstractIn the present research, the microbiological changes that occurred during the fermentation process of traditionally produced Gemlik style dry-salted olives, locally known as “sele”, were monitored. Following the fermentation process, microbiological, chemical and organoleptic changes were investigated for the products which were stored at room temperature for a period of 6 months after various pasteurization processes (non-brined, oiled and non-oiled). At the initial stages of fermentation, microbial flora consisted of molds and lactic acid bacteria, and in the following stages no presence of lactic acid bacteria could be detected. None of Gemlik style dry-salted (sele) olive samples contained coliform bacteria. During the storage period, the highest total bacteria count (1,2x105 cfu/g) was detected in the control-oiled group and the lowest total count (10 cfu/g) was observed in the pasteurized non-oiled group. The samples within the control group exhibited mold growth, whereas the pasteurized samples rarely exhibited yeast/mold growth. Throughout the storage period, dry matter, pH, total acidity, protein, oil content and oleuropein (absorbance) values of samples were monitored, and no significant change was observed among the sample groups. In general, all samples were relished according to the organoleptic evaluation results conducted after fermentation and throughout the storage period. However, with their attractive appearance, oiled group Gemlik style dry-salted (sele) olives were preferred at higher rates compared to non-oiled samples with dull appearance. Additionally, the slightly rancid taste of oiled group samples towards the end of the storage period, received adverse opinions of some of the panelists. Saltiness values, on the other hand, were found to be at normal levels.en_US
dc.identifier.citationAlak, S. ve Uylaşer, V. (2017). "Microbiological monitoring of olive fermentation process of Gemlik type dry-salted black olives and investigation of the effect of pasteurization on the product’s shelf life". Journal of Biological and Environmental Sciences, 11(33), 149-164.tr_TR
dc.identifier.endpage164tr_TR
dc.identifier.issn1307-9530
dc.identifier.issn1308-2019
dc.identifier.issue33tr_TR
dc.identifier.startpage149tr_TR
dc.identifier.urihttp://jbes.uludag.edu.tr/PDFDOSYALAR/33/mak06.pdf
dc.identifier.urihttp://hdl.handle.net/11452/20099
dc.identifier.volume11tr_TR
dc.language.isoenen
dc.publisherUludağ Üniversitesitr_TR
dc.relation.journalJournal of Biological and Environmental Sciencestr_TR
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergitr_TR
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectOliveen_US
dc.subjectDry curingen_US
dc.subjectPasteurizationen_US
dc.subjectShelf lifeen_US
dc.titleMicrobiological monitoring of olive fermentation process of Gemlik type dry-salted black olives and investigation of the effect of pasteurization on the product’s shelf lifeen_US
dc.typeArticleen_US

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