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Determination of Antimicrobial Effects of Probiotic Lactic Acid Bacteria and Garlic Extract Against Some Foodborn Pathogenic Bacteria Полный текст
2017
Selin Kalkan | Elçin Taş | Zerrin Erginkaya | Emel Ünal Turhan
In this study, it was investigated that the inhibition effect of some lactic acid bacteria (Lactobacillus acidophilus NCC68, Lactobacillus casei Shirota, Lactobacillus rhamnosus (Ezal, commercial starter cultures)) which possessed with probiotic characteristics, against Bacillus cereus, Salmonella Enteritidis, Escherichia coli, Escherichia coli 0157:H7 ATCC 35150 and Staphylococcus aureus ATCC 25923. Besides, the inhibitory effect of probiotic cultures which used with meat and meat product additives that garlic extract over the antagonistic effects of sensitive pathogens were investigated in vitro. Consequently, the whole of lactic acid bacteria and garlic extract which were used in this study, showed inhibition effects against all selected pathogenic bacteria. Staphylococcus aureus ATCC 25923 was determined as the most sensitive pathogenic bacteria while Bacillus cereus was the most resistant bacteria against lactic acid bacteria and garlic extract. There was a distinctive increase in inhibition effects were observed by used of a combination with lactic acid bacteria and garlic extract.
Показать больше [+] Меньше [-]Influences of Packaging on Consumers’ Choice of Agricultural Products in Enugu, Nigeria Полный текст
2017
Chukwuebuka Ebube Wilfred | Tobenna Valentine Onyeakusiobi
This study focused on packaging and its influence on consumers’ choice of agricultural products in Enugu metropolis, Nigeria. In addition, it also aimed to ascertain the relationship between packaging of agricultural products and their perceived quality. The study population is made up of agro-product consumers in Enugu metropolis, Nigeria. A total of 165 questionnaires were administered to respondents. Data obtained through questionnaires were tabulated and analyzed using simple percentages while the chi-square was used to test the research hypotheses. The major findings of this study were that packaging has a direct relationship both to consumers’ choice of agricultural products and their perception of the quality of such products. Accordingly, the researchers conclude and recommend that improved packaging design for agricultural products is essential in attracting consumers and positively influencing their choice of purchase.
Показать больше [+] Меньше [-]Origin Determination and Differentiation of Gelatin Species of Bovine, Porcine, and Piscine through Analytical Methods Полный текст
2017
Hatice Saadiye Eryılmaz | Beyza Şükran Işık | Evren Demircan | Zahide Memeli | Esra Çapanoğlu | Dilara Nilüfer Erdil
Gelatin origin determination has been a crucial issue with respect to religion and health concerns. It is necessary to analyze the origin of gelatin with reliable methods to ensure not only consumer choices but also safety and legal requirements such as labeling. There are many analytical methods developed for detection and/or quantification of gelatin from different sources including bovine, porcine and piscine. These analytical methods can be divided into physicochemical, chromatographic, immunochemical, spectroscopic and molecular methods. Moreover, computational methods have been used in some cases consecutively to ensure sensitivity of the analytical methods. Every method has different advantages and limitations due to their own principles, applied food matrix and process conditions of material. The present review intends to give insight into novel analytical methods and perspectives that have been developed to differentiate porcine, bovine and piscine gelatins and to establish their authenticity. Almost every method can be succeeded in origin determination; however, it is a matter of sensitivity in that some researches fail to ensure sufficient differentiation.
Показать больше [+] Меньше [-]İstanbul İli Adalar İlçesi’nde Hobi Bahçeleri ve Peyzaj Alanlarında Yetiştirilen Süs Bitkilerinde Tospovirüslerin Saptanması Полный текст
2017
Fatma Şafak | Muharrem Arap Kamberoğlu
Bu çalışma, İstanbul ili Adalar İlçesinde (Büyükada, Heybeliada, Kınalıada, Burgazada) hobi bahçeleri ve peyzaj alanlarında yetiştirilen süs bitkilerinde Tomato spotted wilt virus (TSWV), Iris yellow spot virus (IYSV) ve Impatients necrotic spot virus (INSV) varlığının saptanması amacıyla, 2015 ile 2016 yılları arasında yürütülmüştür. Bölgede yapılan survey çalışmalarında simptomolojik olarak şüpheli süs bitkileri ile simptom göstermeyen süs bitkilerinden doku örnekleri alınmıştır. Toplanan 150 adet süs bitkisi örneği öncelikle Double Antibody Sandwich (DAS) ELISA yöntemi ile testlenmiş ve örneklerin hiçbirinde TSWV ve INSV infeksiyonu saptanmamıştır. ELISA testlerinde IYSV ile bulaşık olduğu saptanan örnekler RT-PCR çalışmalarında kullanılmıştır. IYSV-465c; IYSV-239f primer çifti ile yapılan RT-PCR çalışmalarında Pittosporum tobira ve Hydrangea macrophylla için 240 bp büyüklüğe sahip band gözlenmiştir. Böylece, IYSV’nin Adalar ilçesinde varlığı moleküler olarak da ortaya konulmuştur.
Показать больше [+] Меньше [-]Estimation of Relationship Between In Situ and In Vitro Rumen Protein Degradability of Extruded Full Fat Soybean Полный текст
2017
Arzu Erol Tunç | Yusuf Cufadar | Sema Yaman
The objectives of this study were to estimate the protein degradability of extruded full fat soybean (ESB) by in situ (nylon bag) and in vitro enzymatic method and to develop an equation in order predict in situ degradability from in vitro values. In the study enzymatic technique; hydrolysis after 1 h (INV1) and after 24 h (INV24) by a purified protease extracted from Streptomyces griseus in a borate-phosphate buffer at pH 8 was used as in vitro method. Relationship between in situ effective protein degradability (INSE) and in vitro degradability after 1 and 24 hours incubations (INV1 and INV24) were determined. In situ protein degradability was measured at 0, 2, 4, 8, 16, 24, and 48 and at 72 h incubations in the rumen of 3 Holstein cows. In the study INSE, INV1 and INV24 were determined as 58.05, 20.24 and 41.46% respectively. Despite there were differences between in situ and in vitro protein degradability values, correlation coefficients between in situ and in vitro protein degradability of ESB were high and regression equations for estimation of in situ from in vitro were found significant. As conclusion in vitro enzymatic protein degradability (INV1 and INV24) can be used for estimation of in situ effective protein degradability of extruded full fat soybean.
Показать больше [+] Меньше [-]Agricultural Chemical Use in Tomato Farming in Kazova Region of Tokat Province Полный текст
2017
Bilge Gözener | Murat Sayılı | Aysun Çağlar
Pesticide uses in Kazova region of Tokat province were assessed in this study. Data were gathered through Simple Random Sampling method with questionnaires made with 72 agricultural enterprises. Resultant data were assessed through arithmetic means and percentiles. A factor analysis was also performed on producer opinions about pesticide use in tomato. Average enterprise size was 20.27 da and tomato is cultivated over 56.98% of these lands. Of the participant producers, 97.22% were not member of any associations or cooperatives. About 91.67% of the participant producers prefer chemical treatments. Producer usually use chemicals based on their previous experiences and recommendations of chemical-fertilizer dealers. Price is the dominant factor while selecting the chemicals to be sued. The dose prescribed by the dealer is generally used. Of the participant producers, 91.67% indicated that they didn’t know about the time to be passed between the last chemical treatment and the harvest; 44.44% don’t think that pesticides they use leaved residues over the products and 95.83% indicated that chemical treatments didn’t create environmental pollution. With the factor analysis, KMO value was calculated as 0.553 and 14 variables thought to be effective on producer opinions about agricultural chemical uses were gathered under 6 factors (toxicity, attention in treatments, human health, conscious production and consumption, environmental harm, hygiene).
Показать больше [+] Меньше [-]Effects of Harvest Times on the Fatty Acids Composition of Rose Hip (Rosa sp.) Seeds Полный текст
2017
Mehmet Güneş | Ümit Dölek | Mahfuz Elmastaş | Fatma Karagöz
This study was conducted to determine the change of fatty acids ratios of some rose hip species seeds in different harvest times. Seeds of five genotypes belonging to rose hip species (Rosa sp.) were used in the study. The fruits of species were harvested in six different ripening times and analyzed. Total oil analysis was performed for the fifth harvest only, which was determined as the optimal harvest time. As a result; total oil ratio of rose hip seeds varied as 5.22 and 6.62 g/100g respectively for accessions of Rosa dumalis (MR-12 and MR-15), 6.37 g/100g for R. canina (MR-26), 5.00 g/100g for R. dumalis ssp. boissieri (MR-46) and 5.29 g/100g for R. villosa (MR-84). Eleven fatty acids were determined in rose hip seeds. Among these fatty acids linoleic, oleic, linolenic, palmitic and stearic acids respectively had high ratio. Saturated fatty acids ratio (SFAs) was the highest in R. canina (MR-26) and the lowest in R. dumalis (MR-12); monounsaturated fatty acids ratio (MUFAs) was the highest in R. dumalis (MR-12) and the lowest in R. dumalis ssp. boissieri (MR-46); polyunsaturated fatty acids ratio (PUFAs) was the highest in R. dumalis ssp. boissieri (MR-46) and the lowest in R. dumalis (MR-12). Mono and polyunsaturated fatty acid contents obtained in this study was high; the change of fatty acid profile in the studied species in relation to harvest time was significant for some species and insignificant for others. A conclusion was reached that it is important to pay attention to qualitative and quantitative properties of seeds when conducting studies about rose hip improvement.
Показать больше [+] Меньше [-]Analysis of the Current State of Hazelnut Processing Plants in Ordu Полный текст
2017
Derya Öztürk | Sezer Yıldız | Elif Topsakal
Turkey has almost 70% of world hazelnut production and 80% of hazelnut export. Ordu has the privilege of being the city which has the greatest area with hazelnut by supplying the 33.7% of hazelnut production. The income source of 70% of the people in Ordu is hazelnut and for this city, hazelnut is not only an agricultural product, it is also a national asset. There are 40 hazelnut processing plants with an internal capacity of 350.000 tons annually. 32.5% of these plants are in Ordu. When the top 20 Black Sea Hazelnut and Products Exporters Union member firms with the highest hazelnut export in 2016 were analyzed, it was found that 7 of these firms are in Ordu. These 7 firms in Ordu cover the 11.84% of the total hazelnut export value, which is 1.981.334.911$ for 2016. The purpose of this study which will be discussed within this context is to analyze and show the current states of hazelnut processing plants in Ordu in terms of product processing, quality assurance and standards and marketing. The data obtained as a result of the study will be used to find out the tendencies of the plants in the coming years. Because of this, the study is important in terms of researching the obstacles in increasing the export shares of hazelnut, which is one of the most important export products of Turkey economy. For this purpose, a face-to-face questionnaire was conducted with the managers and authorities of 12 hazelnut processing plants in Ordu. It is expected that the information presented within the context of the study will develop the hazelnut processing industry and will lead the related people researching in this field.
Показать больше [+] Меньше [-]The Effect of Different Current and Wave Type Electricity Values Used in Unconscious Pre-Slaughtering of Broilers on Carcass Defects and Quality Characteristics of Breast Meat Полный текст
2017
İhsan Bülent Helva | Mustafa Akşit
This study was conducted to determine the effects of electrical stunning including different currents (AC/pDC) and waves types (square, triangle and chirp) applied to unconscious to broiler chickens before slaughtering on carcass defects and breast meat quality characteristics. In this study were used 39-d-old (Ross 308) broiler chickens, from the same flock raised commercially under similar environmental and mean weight 2350 g. Six treatment groups were set up with 10 birds (5♀:5♂) each. A total of 60 broiler chickens were stunned with electricity at water bath for 5 s using AC and pDC currents at 200 Hz frequency and 120 mA/bird. After slaughtering, the amount of blood loss, vein hemorrhages in the carcasses, spot stains and fractures in the wing bones were detected in the chicks. In addition, pH and color values and water loss of breast meat were also examined. Electric current application did not cause any significant carcass defect in chickens. It was determined that triangular and chirp wave types caused more blood loss than square wave in chickens. The lowest water loss in breast meat was realized in the chirp wave type while pH15 value in the breast meat of chicks applied AC was found higher. It was determined that triangular and square waves in water baths and chirp wave type in individual applications were resulted in having more positive effects on the properties investigated.
Показать больше [+] Меньше [-]Süt Kaynaklı Olmayan Probiyotik Gıdalar Полный текст
2017
Ali Soyuçok | Gülden Başyiğit Kılıç
Günümüzde piyasada bulunan probiyotikler, genellikle fermente süt ürünleri şeklindedir. Süt tüketimi, süt ürünlerinin kolesterol içeriği ve laktoz intoleransı sebebiyle sınırlanmaktadır. Ayrıca, bazı gelişmekte olan ülkelerde fermente ürünlerinin kullanımını kısıtlayan gelenekler ve ekonomik nedenler, alternatif gıdaların probiyotikler için taşıyıcı olarak kullanılması fikrini öne çıkarmaktadır. Bu sebeplerle et ürünleri, tahıllar, baklagiller, meyveler ve sebzeler, probiyotik mikroorganizmaların substratları olarak tüketicilerin ilgisini çekmektedir. Bu ürünlerin geliştirilmesi hem endüstriyel, hem de bilimsel açıdan önemli bir araştırma alanıdır. Bu çalışmada, süt kaynaklı olmayan probiyotik gıdalar hakkında bilgiler verilmiş ve bu alanda yapılan araştırmalar vurgulanmaya çalışılmıştır.
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