Ultrasonikasyon Yöntemi ile Hazırlanmış Zencefil Mikrokapsüllerinin Karakterizasyonu



Inactivation mechanism of polyphenol oxidase during ultrasound treatment
Baltacıoğlu, Hande; Bayındırlı, Alev; Severcan, Feride; Department of Food Engineering (2014)
In this study, the activity and conformational changes of mushroom polyphenol oxidase (PPO) were investigated during the inactivation by heat-ultrasound treatment at different power, temperature and time combinations. The secondary structure change of the enzyme during inactivation was analyzed by using Fourier Transform Infrared (FTIR) spectroscopy and compared with the enzyme activity change. In thermosonication (TS) treatment, the residual enzyme activity decreased with increasing power, time and tempera...
Effects of ultrasound pretreatment and anaerobic digestion on the energy potential of sludge
Çelebi, Emrehan Berkay; Sanin, Faika Dilek; Aksoy, Ayşegül; Department of Environmental Engineering (2015)
The by-product of wastewater treatment, sludge, is generated in tons everyday all around the world. As environmental regulations in Turkey are becoming stricter during the European Union adaptation period, the previously wide-spread disposal method of landfilling the sludge will not be applicable. Instead, dried sludge is expected to be used in revenue generating methods like land application or combustion. Combustion can be thought of as more beneficial as it uses sludge as an energy source. However, it is...
Structural and optoelectronic properties of vanadium pentoxide thin films deposited by ultrasonic spray pyrolysis.
Koç, Şeyma; Ünalan, Hüsnü Emrah; Department of Metallurgical and Materials Engineering (2019)
Nanocrystalline vanadium pentoxide (V2O5) thin films were deposited onto fluorine doped tin oxide (FTO) coated glass substrates using ultrasonic spray pyrolysis and spin coating methods. The formation behavior of thin films, the effects of different production methods on the characteristics of the films and their microstructural / physical properties were investigated as a function of annealing temperature in the range of 450-550 °C and other controllable process parameters. Structural, morphological and op...
Fabrication of polyethersulfone hollow fibers for ultrafiltration
Kaltalı, Gülçin; Çulfaz Emecen, Pınar Zeynep; Kalıpçılar, Halil; Department of Chemical Engineering (2014)
Hollow fiber membranes take an important part in membrane separation processes. They are used in many areas like gas separation, pervaporation, ultrafiltration and microfiltration processes due to their advantages like high membrane area per volume and easy backwashability. Poly(ethersulfone) (PES) is one of the most commonly used polymers in preparing hollow fiber ultrafiltration membranes. Due to its hydrophobic character, use of hydrophilic additives is usually necessary to make membranes resistant to fo...
Development of piezoelectric ceramics for ultrasonic motor applications
Kalem, Volkan; Timuçin, Muharrem; Department of Metallurgical and Materials Engineering (2011)
This study has been carried out to develop and manufacture piezoelectric ceramic materials which are utilized for ultrasonic motor (USM) applications. For this purpose, the effect of compositional modifications on the dielectric and piezoelectric properties of lead zirconate titanate (PZT) based ceramics was investigated. PZT based powders were produced using the mixed oxide method. The base composition was selected as Pb(Zr0.54Ti0.46)O3. The samples in the proximity of morphotrophic phase boundary were dop...
Citation Formats
E. Yıldız and H. M. Öztop, “Ultrasonikasyon Yöntemi ile Hazırlanmış Zencefil Mikrokapsüllerinin Karakterizasyonu,” presented at the 9. Gıda Mühendisliği Kongresi, 2015, İzmir, Turkey, 2015, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/76486.