Browsing by Author "Baysal, Taner"

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Airborne fungi in a Turkish olive processing plant
(VTT Technical Research Center of Finland, 2009) Baysal, Ayşe Handan; Baysal, Taner; 03.08. Department of Food Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
Studies employing gravity settling culture plates (GSC) were conducted in order to analyse the airborne fungi of an olive processing (ripe pitted, natural calamata pitted and whole olive) plant in Izmir, Turkey, in May 2008. Sampling procedure for airborne fungi was performed 8 times during the processing. Numbers and types of airborne fungi in the air of olive processing areas were investigated by exposing a Petri dish of malt extract and potato dextrose agar medium for 15 min and then counting the number of colonies which develop after incubation at 25°C for 7 d.. Moulds were identified according to Pitt and Hocking (1997) and Samson et al. (1996).
Evaluation and Production of Ready-To Meals
(Technical Research Center of Finland, 2009) Baysal, Taner; Tamme, Terje; Ehavald, Helen; Korel, Figen; Overes, Maarten; Hödrejärv, Ülle; Kala, Aet; Roasto, Mati; 03.08. Department of Food Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
Ready-to-eat (RTE) is defined as the status of the food being ready for immediate consumption at the point of sale or serve. It could be served as raw or cooked, hot or chilled, and can be consumed without further heat-treatment including reheating (Anon., 2001). RTE vegetables and salads, also called minimally-processed products, are raw products that must preserve as much as possible the nutritional, sensorial and microbial qualities of fresh products. A very wide range of vegetables are used, both cut and whole. Even during refrigerated storage, the fresh fruits and vegetables are characterized by active metabolism.
Low Temperature Plasma: a New Disinfection Method for Food and Food Contact Surfaces
(Technical Research Center of Finland, 2009) Baysal, Ayşe Handan; Baysal, Taner; 03.08. Department of Food Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
The need for ensuring microbial food safety and quality, without adversely affecting the nutritional, functional and sensory characteristics of foods, has led to an increase in low-temperature or non-thermal processing technologies for food preservation. These emerging technologies including high hydrostatic pressures, pulsed electric field and low-temperature plasmas inactivate microorganisms at ambient or moderately elevated temperatures and short treatment times.
Citation - WoS: 39
Citation - Scopus: 48
Production of Antimicrobial Films by Incorporation of Partially Purified Lysozyme Into Biodegradable Films of Crude Exopolysaccharides Obtained From Aureobasidium Pullulans Fermentation
(University of Zagreb, 2005-10) Kandemir, Nilay; Yemenicioğlu, Ahmet; Mecitoğlu, Çiğdem; Elmacı, Zehra Seda; Arslanoğlu, Alper; Göksungur, Mehmet Yekta; Baysal, Taner; 04.03. Department of Molecular Biology and Genetics; 03.08. Department of Food Engineering; 03. Faculty of Engineering; 04. Faculty of Science; 01. Izmir Institute of Technology
Antimicrobial films were produced by incorporating partially purified lysozyme into films of crude exopolysaccharides (59% pullulan) obtained from Aureobasidium pullulans fermentation. After film making, the films containing lysozyme at 100, 260, 520 and 780 μg/cm2 showed 23 to 70% of their expected enzyme activities. The highest recovery of enzyme activity (65-70%) after the film making was obtained in films prepared by incorporating lysozyme at 260 μg/cm2 (1409 U/cm2). The incorporation of disodium EDTA·2H2O and sucrose did not affect the initial lysozyme activity of the films significantly. With or without the presence of disodium EDTA·2H2O at 52 or 520 μg/cm2, lysozyme activity showed sufficient stability in the films during 21 days of cold storage. However, the presence of sucrose at 10 mg/cm2 in the films caused the destabilization of part of enzyme activity (almost 35%) at the end of storage. The combinational incorporation of lysozyme at 780 μg/cm 2 (4227 U/cm2) and disodium EDTA·2H2O at 520 μg/cm2 gave antimicrobial films effective on Escherichia coli. However, in the studied lysozyme concentration range the films did not show any antimicrobial activity against Lactobacillus plantarum. This study clearly showed that the partially purified lysozyme and crude exopolysaccharides from Aureobasidium pullulans may be used to obtain antimicrobial films to increase the safety of foods.