Onur Taşkın

Onur Taşkın
Uludag University · Department of Biosystems Engineering

PhD
@UC Davis- BAE

About

41
Publications
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268
Citations
Introduction

Publications

Publications (41)
Article
Full-text available
In this study, the influence of the intermittent and continuous infrared drying methods on color, microstructure analysis on images obtained using scanning electron microscopy (SEM), thermal analysis, shrinkage and rehydration ratios of sweet potato samples was investigated. In addition, the drying curves were determined and the experimental drying...
Article
In this study, carrot samples that have different slice thicknesses (2 and 4 mm) were dried by applying ultrasound pre-treatment at different time periods (0, 20 and 40 min) and the changes in colour, rehydration, pH and °Brix values were examined. Besides, microstructures of dried samples under different conditions were observed through scanning...
Article
Full-text available
This study investigated the rehydration, water activity, pH, Brix, color, bulk density, tapped density, flowability, cohesiveness, wettability, solubility values, and microstructures of freeze-dried European cranberrybush powders. Additionally, experimental freeze-drying data were coupled to nine thin-layer models, and the logarithmic model was cho...
Article
Full-text available
Drying has been used to preserve food for ages. Various techniques have been applied to obtain a final product that is reduced in terms of both volume and weight. This research was performed to specify the influences of convective drying (50 and 75 °C), microwave drying (90 and 160 W) and combination of microwave and convective drying (for 90 W bot...
Conference Paper
Full-text available
In this research, the impact of microwave-convective processes on black chokeberry was investigated on drying time, thermal behavior, rehydration, shrinkage, energy consideration and microstructure. Based on the data, the minimum drying time was 100 min, obtained with 160 W-75 °C process which is reduced 80.39% compared to the maximum drying time o...
Article
In this presented study, the convective air drying method at three drying temperatures (50, 60 and 70 °C) was applied to investigate in terms of energy and exergy analysis, drying kinetics, modeling, microstructure and thermal properties of banana slices. Results of data analysis displayed that the energy and the exergy efficiencies were reduced, w...
Article
Full-text available
Drying characteristics, color, pH, °Brix, energy, thermal image and micrograph parameters of the whole, half cut and puree black chokeberry samples were analyzed. Experiments were carried out with a freeze dryer at a temperature of −50 °C. The results indicated that drying time was being highest with whole samples, whereas the lowest with puree sam...
Article
Full-text available
This work aims at investigating rehydration, pH, brix, titrable acidity and color in infrared and microwave drying of European Cranberrybush. Drying experiments were carried out at infrared temperature of 60, 70 and 80 °C and microwave power of 120 and 350 W. The results showed that both the infrared temperature and microwave power influenced the d...
Conference Paper
Full-text available
In recent years, solar power plants for energy production in Turkey have been established on agricultural areas. These investments were located especially in the Kayseri and surrounding provinces. However, traditional products such as wheat, barley and alfalfa were grown before solar energy investments in the region. Besides, the province of Kayser...
Article
In the present research, effect of methods that use the microwave (90, 160 and 350 W), infrared (60, 70 and 80 C), and freeze drying for turmeric samples on the drying kinetics, effective moisture diffusivity and color were analyzed. Also ten distinct thin layer models of drying were used to predict their kinetics. Depending on the evaluation of t...
Article
Full-text available
In the present research, effect of methods that use the microwave (90, 160 and 350 W), infrared (60, 70 and 80 °C), and freeze drying for turmeric samples on the drying kinetics, effective moisture diffusivity and color were analyzed. Also ten distinct thin layer models of drying were used to predict their kinetics. Depending on the evaluation of t...
Conference Paper
Full-text available
Frost is the formation of water droplets in the atmosphere into ice crystals directly on plants and soil. Frost damage is caused by environmental factors such as low air temperature and radiation and is a physiological disorder that causes significant yield-quality losses in crop production. Although frost occurrence vary according to the season (w...
Article
Full-text available
This research deals with lime samples and aims to investigate the impacts of microwave and combined microwave-convective drying applications. According to the statistical outcomes, models of Midilli et al. and Page were discovered to give more suitable predictions than the other models. Increasing level of both temperature and microwave power, indu...
Article
Full-text available
Günümüzde artarak devam eden elektrik enerjisi talebini çoğunlukla fosil yakıtları kullanarak karşılamaktayız. Ancak, bu yöntemin kullanılması ile iletim hatlarının uzunluğundan kaynaklanan kayıplar yaşanmakta, CO 2 ve diğer sera gazı emisyonlarının salınımı gerçekleşmekte ve iletim hatlarının işletme ve bakım maliyetinin yüksekliği gibi zorluklarl...
Article
Full-text available
Abstract: This study investigates the impact of physical damage on the total amount of power generated by the solar panel in various directions and angles. Moreover, thermal camera was used for identification of heating in the examined PV panel. Climatic data were measured simultaneously to determine the performance of the panel as well. The produc...
Article
Full-text available
The effect of microwave‐vacuum drying on drying characteristics, protein, mineral content, and color of the apple was investigated in this study. Eight different drying treatments were applied with using levels of microwave power (200 and 300 W), vacuum conditions (200 and 400 mmHg), and pulse ratios (PR = 1 [Continuous] and PR = 2 [30 s ton/30 s t...
Article
Full-text available
One of the biggest problems of today's enterprises is the high-value electricity costs. In order to solve this problem, solutions should be developed based on solar energy projects. Moreover, by selling after the self-consumption to the grid can be obtained more profit. This study includes the investigation of the rooftop of broiler plant with sola...
Article
Full-text available
In the present study, the effects of intermittent microwave-vacuum drying on the “Deveci” pear in terms of the drying kinetics, mineral content, protein content, rehydration ratio, color, energy, specific energy and microstructure were investigated. According to the drying treatments, increased microwave power (100 and 200 W) and vacuum (200 and 40...
Article
Full-text available
In this study, the protein and mineral contents of fruit, stalks and leaves of European Cranberrybush were investigated which are organically grown in nature. The macro element contents of European Cranberrybush fruits, stalks and leaves were determined as 0.52-0.51-1.94% Nitrogen (N), 0.09-0.04-0.42% Phosphorus (P), 0.93-0.10-1.17%, Potassium (K),...
Article
Full-text available
Birçok meyve ve sebze posası içerdiği besin değerlerinden dolayı hayvan beslemesinde önemli bir yem katkı maddesi olarak kullanılmaktadır. Yem olarak meyvelerden elma, portakal, nar ve şeftali posaları, sebze olarak ise turp ve havuç posaları daha fazla tercih edilmektedir. Bu çalışmada şeftali posası 60, 65 ve 70 °C kurutma havası sıcaklıklarında...
Conference Paper
Full-text available
Nowadays, the electricity demand is meeting mostly by using fossil fuels. However, there are difficulties of this method such as the loss of prolongation losses of transmission lines, the emission of CO2 and other greenhouse gas emissions, and the high operating and maintenance costs of transmission lines. With this study, 8 different scenarios wer...
Article
Full-text available
In this research, the effects of convective drying (60, 70, 80 and 90 °C) techniques on the drying kinetics, color, antioxidant capacity and total phenolic content of European cranberrybush were investigated in detail. To choose the best thin-layer drying models for the drying treatments, 10 mathematical models were compared for the experimental da...
Article
Full-text available
In this study, date samples drying with different infrared drying temperature on drying time, drying rate and the applicability of some different drying models were investigated. Fresh date samples were dried into 5 mm thick slices via a laborator scale infrared dryer. Experimental results showed that average drying times of samples, which they wer...
Article
Full-text available
In this study, the effects of convective (60, 70, 80 and 90°C), microwave (120 and 350 W) and freeze-drying methods on the drying kinetics, color, total phenolic (TP) content and antioxidant capacity of pineapples were examined. The statistic tests proved that the Midilli et al., Two Term, Wang and Singh and Page models were superior to the other m...
Article
Full-text available
This research inspected the effects of freeze, microwave (120 and 350 W) and hot air (60, 70 and 80 °C) drying techniques on the color, drying characteristics, antioxidant capacity and total phenolic content of mango slices. Midilli et al., Two-term and Page models which exemplify drying characteristics are superior than alternative models. All of...
Article
Full-text available
This study was carried out to investigate the influences of different temperatures (50, 60, 70 and 80 °C) on the drying kinetics of kumquat slices. Additionally, quality attributes such as colour, total phenolic (TP) content and antioxidant capacity (ATC) of dried specimens at various temperatures in comparison with the fresh sample was determined....
Article
Full-text available
This study analysed the convective (60, 70 and 80° C), microwave (120 and 350 W) and freeze drying methods in terms of their effects on the drying characteristics, colour, total phenolic content (TPC) and antioxidant capacity of kiwi slices. Nine different mathematical models were applied to experimental data to achieve the most accurate calculatio...
Conference Paper
Full-text available
Pineapple, being highly nutritive, is a tropical and subtropical fruit that has very short shelf-life. Drying can be used to extend the shelf life of many products. In this study, the effects of infrared drying method at 60, 70, 80 and 90C on the drying kinetics, colour, total phenolic content and antioxidant capacity of pineapple samples were ana...
Conference Paper
Full-text available
Global warming is problem of all the countries and required international cooperation to avoid the influences. A new technological application used worldwide has led to the use of fossil fuels and creating more various harms to environment as a result of exhaust emissions from combustion. One of these new applications in the agricultural sector is...
Article
Full-text available
It was intended to reveal the time dependent power generation under different loads for two different solar panels under the conditions of Bursa province in between August 19 and 25, 2014. The testing sets include solar panels, inverter, multimeter, accumulator, regulator, pyranometer, pyrheliometer, temperature sensor, and datalogger. The efficien...
Article
Full-text available
A photovoltaic energy-assisted industrial dryer has been analyzed. The dryer has been tested in various weather and working conditions with 3 kg of green peas from 75.6% initial moisture content to 20% final moisture content (w.b.). The effect of various drying air temperatures at three levels (40, 50, and 60°C) and two distinct air velocities (3 m...
Article
Full-text available
Istanbul is located in the northwest part of Turkey and has the greatest population of any city in the country. Istanbul and its surroundings were researched for wind potential. Energy production from wind was evaluated technically and economically in this study. Çorlu, Kumköy and Sile sites were examined. Other sites in the same region (Göztepe, K...
Article
The ability to supply energy in rural areas and in agricultural plants with renewable energy technologies, especially wind energy, is advantageous in terms of a sustainable environment and the increasing cost of energy. Today, wind turbines are used actively in many areas, some of which are for commercial purposes. Small-scale wind turbines that pr...
Conference Paper
Full-text available
Irrigation is considered a common need for agricultural production in all around the world. Instead of the high priced fossil fuels, wind-powered agricultural irrigation is an alternative usage of renewable energy in Turkey. However, it is necessary to be researched technically and economically before the implementation. In this paper; crop types,...
Conference Paper
Irrigation is considered a common need for agricultural production in all around the world. Instead of the high priced fossil fuels, wind-powered agricultural irrigation is an alternative usage of renewable energy in Turkey. However, it is necessary to be researched technically and economically before the implementation. In this paper; crop types,...

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