Refine search
Results 21-30 of 487
Effectiveness of Boron Formulations against Pseudomonas syringae pv. tomato in Tomato Seeds Full text
2021
Ayşegül Gür | Kubilay Kurtulus Bastas | Şaban Kordali | Ferah Yılmaz
Pseudomonas syringae pv. tomato, the bacterial agent for tomato speck disease, can cause serious epidemics with high leaf moisture, mild temperatures, and cultural practices allowing bacterial dissemination among host plants. Boron is an essential micro-nutrient for plant growth and health in agricultural production. In this study, the effectiveness of 14 different Boron compounds at 5 different doses (1, 5, 10, 20 and 40 mM) against P. s. pv. tomato at a concentration of 108 CFU ml-1 in vitro was evaluated and the most successful 4 different Boron compounds (Ammonium tetrafluoroborate, Sodium tetrafluoroborate, Zinc borate and Disodium octaborate tetrahydrate) were coated with 5 mM doses infected cv. H2274 tomato seeds to determine bacterial populations and seed emergence rates in the seeds. Among the 14 different Boron compounds used in the experiments, Disodium octaborate tetrahydrate was the most successful active ingredient 92% ratio in inhibiting P. s. pv. tomato populations in tomato seeds, while 39% success was achieved with sodium tetrafluoroborate applications. According to the results of the research, it is thought that some Boron compounds can be an economical, effective and environmentally friendly chemical in reducing P. s. pv. tomato in tomato seeds within the scope of good agricultural practices.
Show more [+] Less [-]Effect of Tillage Techniques on Depth, Furrow Slice and Water Retention in Maugo Smallholder Rice Scheme in Kenya Full text
2021
Pius Kipchumba Cheboi | Clement Kiprotich Kiptum | Japheth O. Onyando
This study was conducted with the aim of determining the influence of tillage techniques on depth, furrow slice and water retention in Maugo Smallholder Rice Scheme in Kenya. Treatments were arranged in randomized complete block design with four replicates. Four tillage treatments were used. The first one was conventional ox plough practiced by farmers where they first flood the field with water before ploughing. The other three treatments were ox plough, hand hoe and tractor ploughing all with no flooding before ploughing. Data collected included depth of ploughing and harrowing during land preparation. Furrow slices during ploughing and harrowing as well as water retention were recorded. Tractor ploughing had the highest mean depth of ploughing of 42.00 ± 0.81 cm followed by conventional ox ploughing with 17.75 ± 0.75 cm, ox ploughing15.75 ± 0.62 cm and hand hoe ploughing had the lowest mean depth 15.50 ± 0.28 cm. Tractor ploughing had the largest mean furrow size of 62.00 ± 0.91cm followed by conventional ox ploughing 32.25 ± 0.85 cm, ox ploughing 30.25 ± 0.85 cm while hand hoe ploughing had the smallest mean furrow slice of 16.5 ± 0.50 cm. Highest mean of retained water was recorded in week 4 in paddy rice fields prepared using conventional ox ploughing (10.5 cm), ox ploughing (10 cm), hand hoe ploughing (11.5 cm) and tractor ploughing (11.5 cm) while the lowest was recorded in week 15 for conventional plots. There were significant differences in mean depths during both ploughing and harrowing. Tractor ploughing mean depths were significantly different from the other treatments. The weekly mean water depths retained in the plots were more than 6 cm for the entire growing period of rice.
Show more [+] Less [-]Yonca Silajlarında Atık Reçel Karışımı İlavesinin Silaj Fermantasyonu ve İn Vitro Sindirilebilirlik Üzerine Etkileri Full text
2021
Sibel Soycan Önenç | Damla Yayla
Bu araştırma, atık reçel karışımı ilavesinin yonca silajlarının fermantasyonu ve in vitro sindirilebilirlik üzerine etkilerini belirlemek amacıyla planlanmıştır. Yonca, ekim ayında çiçeklenme başlangıcında hasat edilerek soldurulmuştur. Atık reçel karışımı önce bir süzgeç yardımıyla katı ve sıvı olarak iki kısıma ayrılmıştır. Kontrol grubuna, 20 ml saf su ilavesi yapılmıştır. Sıvı kısım; Reçel-I silajı (RI), 50 mg sıvı reçel+20 ml saf su /kg yonca; Reçel-II silajı (RII), 100 mg sıvı reçel+20 ml saf su /kg yonca olacak şekilde ilave edilmiştir. Katı kısım ise; Reçel Parçacık-I silajı (RPI), 30 mg reçel parçacıkları +30 ml saf su /kg yonca; Reçel Parçacık-II silajı (RPII), 60 mg reçel parçacıkları +60 ml saf su /kg yonca olacak şekilde hazırlanmıştır. Silajlar, kapalı bir depoda 60 gün süresince fermantasyona bırakılmıştır. Reçel ve reçel parçacıkları ilave edilmesi yonca silajının pH ve nötral deterjanda çözünmeyen lif (NDF) içeriklerini düşürmüştür. Araştırmada, en yüksek laktik asit (LA) içeriği RII grubunda kuru madde (KM) de 100,28 g/kg olarak belirlenirken en düşük ise kontrol grubunda 23.07 g/kg KM olarak belirlenmiştir. Yoncaya reçel ve reçel parçaçıkları ilavesi, kontrol grubuna göre enzimde çözünen organik madde (EÇOM) içeriğini önemli düzeyde arttırmıştır (P
Show more [+] Less [-]Review on Production of Single-Cell Protein from Food Wastes Full text
2021
Nura Abdullahi | Munir Abba Dandago | Alkasim Kabiru Yunusa
The roles of protein in bodybuilding and the regulation of biological processes are important in sustaining life. A large amount of protein is required by both humans and animals and this cannot be supplied by only conventional sources. This is because of the rapid increase in world population. The present sources of protein will not meet global protein demand in years to come. Scientists explore the production of single-cell protein (SCP), as an alternative source of protein, through the utilization of wastes and low-value materials. SCP can supply high-quality protein containing both essential and non-essential amino acids that can be utilized by humans and animals. Protein from microbial biomass is cheaper than animal proteins because the substrates used in the production are generally cheaper and more readily available. Moreover, the production process does not require arable land and the entire process can be completed within a short time. This article reviewed the process of SCP production. Different raw materials used in the production and variations in growth media preparation methods were discussed. Various sources of fermentation microorganisms and their potential substrate were reviewed. Growth media enrichment using different carbon, nitrogen, and mineral sources was also discussed.
Show more [+] Less [-]Aktif Bileşenler ile Zenginleştirilmiş Yenilebilir Film ve Kaplamaların Taze ve İşlem Görmüş Et ve Balık Ürünlerine Uygulanması Full text
2021
Ali Kozlu | Yeşim Elmacı
Son yıllarda gıda kaynakları dünya nüfusu ve ekolojik problemlerin artışına bağlı olarak büyük bir hızla tükenmektedir. Bu nedenle gıdaların üretilmesi kadar korunması ve dayanıklılığının geliştirilmesi de büyük önem taşımaktadır. Özellikle et ve balık ürünleri hassas gıdalar olduklarından uygun olmayan depolama koşulları altında çok çabuk bozulabilmektedir. Taze veya işlenmiş et ve balık ürünlerinde, depolama süresince biyokimyasal ve mikrobiyal bozulmaların bir sonucu olarak çeşitli kalite kayıpları meydana gelebilmektedir. Et ve balık ürünlerinde arzu edilen duyusal özelliklerin korunması, biyolojik, kimyasal ve mikrobiyolojik bozulmaların geciktirilmesi amacıyla kullanılan ambalajlama yöntemleri arasında ilgi çekici bir yaklaşım olarak yenilebilir film ve kaplama uygulamaları dikkat çekmektedir. Protein, lipit veya polisakkarit gibi doğal kaynaklardan elde edilen, çevre dostu ve biyolojik olarak parçalanabilir materyallerin kullanıldığı yenilebilir film ve kaplamalar düşük maliyetli ve kolay uygulanabilir olması nedeniyle ön plana çıkmaktadır. Ayrıca yenilebilir film ve kaplamalar antimikrobiyaller, antioksidanlar ve lezzet arttırıcı maddeler gibi aktif bileşenler için taşıyıcı olarak hareket edebilmektedir. Aktif bileşenleri içeren yenilebilir film ve kaplamalar, et ve balık ürünlerinin muhafaza edilmesi için uygundur. Söz konusu ambalajlama yöntemi nem kaybını engelleyerek, mikrobiyolojik bozulmaları geciktirerek ve patojen mikroorganizmaların üremesini kısıtlayarak, lipit, protein ve pigment oksidasyonunu yavaşlatarak ve ürünlerin duyusal özellikler açısından kabul edilebilirliğini uzatarak et ve balık ürünlerinin depolama süresini uzatmayı hedeflemektedir. Bu derlemede aktif bileşenler ile zenginleştirilmiş yenilebilir film ve kaplamaların et, balık ve türev ürünlerine uygulanması ve depolama süresince bu ürünlerde meydana gelebilecek mikrobiyal ve oksidatif bozulmalara ve duyusal kalite kayıplarına karşı gösterdiği koruyucu etki hakkında bilgi verilmiştir.
Show more [+] Less [-]Some Properties of Probiotic Yoghurt Produced for Babies by Adding Fruit Puree, Containing B. infantis, B. bifidum, B. longum, L. paracasei Full text
2021
Didem Sözeri Atik | Fatma Çoşkun
Probiotic yoghurt with fruit was produced to enrich the intestinal flora of infants and to prevent various ailments in infants when the flora is inadequate. Peach, apple and pear purees (10% and 20% each), cow milk, milk powder, starter culture (combination of Streptococcus thermophilus, Lactobacillus delbrueckii ssp. bulgaricus, Bifidobacterium infantis, Bifidobacterium bifidum, Bifidobacterium longum and Lactobacillus paracasei) were used in the production of probiotic yogurt for babies. Some properties of yoghurt samples were investigated during fermentation and on the 1st, 7th, 14th and 21st days of storage. After ten hours of fermentation, the lowest pH was observed in samples with apple puree. It has been determined that syneresis increases with increasing concentrations of fruit purees. The water holding capacity was less in yoghurts containing fruit puree compared to control yoghurt and in 20% fruit puree compared to yoghurts containing 10% fruit puree. The number of L. bulgaricus generally increased in all samples during storage. It was determined that the number of S. thermophilus in control sample was higher than other samples during storage. The number of L. paracasei and Bifidobacterium spp. decreased during storage. While the control sample remained probiotic until the 14th day of storage, other samples lost its probiotic properties before the 7th day of storage. Considering that the number of probiotic microorganisms in a probiotic product should be at least 106-107 CFU/g according to FAO, it has been decided that the most suitable fruits for probiotic yogurt with fruit puree are peach and apple, respectively. Considering the structural features, it is more appropriate to use 10% fruit puree, and considering the probiotic feature, it is more appropriate to use 20% fruit puree. Choosing the appropriate packaging and fixing suitable storage conditions will help probiotic microorganisms to preserve their vitality for a long time.
Show more [+] Less [-]Analysis of macro- and Microminerals Content in the Einkorn (Triticum monococcum L.) Samples Cultivated in Kastamonu, Turkey Full text
2021
Şeref Turhan | Aslı Kurnaz
Wheat is an important cereal product because of its nutritional value, economy, culture, and history. Einkorn (Triticum monococcum L.) assumed as the oldest wheat. Einkorn locally called “siyez” has recently become popular as a super grain with the thought of being very nutritious in Turkey. In this study, the contents of macrominerals (Na, Mg, Ca, and K) and microminerals (Cr, Cu, Fe, Mn and Zn) in twenty-one einkorn samples collected from different cultivation areas in Kastamonu were determined by using an inductively coupled plasma-optical emission spectrometry following microwave-assisted acid digestion. The results were compared with those analyzed in einkorn and other wheat types in the literature. Average concentrations of K, Ca, Mg, Na, Fe, Zn, Mn, Cr and Cu analyzed in einkorn samples were found as 3712, 1303, 656, 53, 167, 34, 29, 0,7 and 0,6 mg kg-1, respectively. The literature comparison revealed that the investigated einkorn samples were richer in terms of Ca and Fe contents compared to einkorn, emmer, spelt, buckwheat, and durum wheat samples grown in our country and different countries.
Show more [+] Less [-]Microscopic Features of Gonadally Inactive Testis of Khaki Campbell Duck (Anas platyrhynchos domesticus) in Bangladesh Full text
2021
Papia Khatun | Ziaul Haque | Shonkor Kumar Das
The microscopic features of the testis were studied in gonadally inactive Khaki Campbell duck (Anas platyrhynchos domesticus) in Bangladesh. The study was conducted in the Department of Anatomy & Histology, Bangladesh Agricultural University, Mymensingh. Five adult healthy birds of one-year-old were used for this study. The testes were collected immediately after ethical killing of the birds for histological observations. The collected tissue samples were then processed and stained with Hematoxylene & Eosin (H & E) stain for histological observations. The seminiferous tubules showed considerable involution with cessation of spermatogenesis. The basal lamina of the seminiferous tubules was irregular in outline and was invaginated into the germinal epithelium in the form of finger-like plicae or folds. Most of the lumen of the seminiferous tubules was empty and all generation of germ cells were not present in most of the seminifeous tubules. The interstitium showed a relative increase in volume and interstitial tissue consisted of loose connective tissue, interstitial cells (Leydig cells), few connective cells and blood vessels. This study first time described the microscopic features of testis of Khaki Campbell ducks in Bangladesh during inactive phases of the reproductive cycle.
Show more [+] Less [-]The Effect of Flock Age on Hatching Results and Chick Quality in Ross 308 Broiler Full text
2021
Murat Durmuş | Kadriye Kurşun | Mikail Baylan | Hasan Rüştü Kutlu
The present study was planned to determine the effect of flock age on hatching results and chick quality in Ross 308 broiler parents. For this purpose, the eggs of three different flock age (30, 47, and 59 weeks of age) were used. A total of 450 eggs (50 × 3 for each group), including 150 eggs from each age group, were placed in the incubator as a coincidence. The number of alive chicks after hatching was determined and these chicks were classified into three quality groups as low quality, high quality, and discarded chicks. Non-hatched eggs were broken in order to control the fertility and determine the embryonic deaths. At the end of the study, the effect of the flock age on fertility rate (%), hatchability (%) and chick quality was found to be significant. However, the effect of flock age on hatchablity of fertile eggs and early, mid, and late-period embryo deaths were found to be insignificant. It was found that eggs obtained from the young breeders were higher in terms of fertility rate and hatchability than eggs obtained from old breeders. The chicks obtained from young breeders' eggs were determined as 33.60% high quality, 48.10% low quality, and 18.30% discarded chicks. These rates were 32.70%, 43.40%, and 23.90% in chicks obtained from middle-aged breeders, respectively, 56.10%, 36.40%, and 7.50% in chicks obtained from the old breeders. As a result, it was determined that there was a decrease in the hatching results in parallel with the increase in breeding age, but the chick quality increased.
Show more [+] Less [-]Effect of Chemical Refining Steps on the Some Micro and Macro Element Content and Quality Parameters in Corn Oil Full text
2021
Ayşe Semra Aksoy | Murat Taşan
In this study, it was aimed to determine some element contents and some quality properties and to compare these parameters at each stage in the chemically refining process of crude corn oil. Color (lovibond tintometer), free fatty acidity, peroxide values and fatty acid compositions were determined in the samples of corn oil taken from consecutive stages of chemically refining. Also, the content of elements (Na, Mg, K, Ca, Fe, Pb, Cd, Ni, Mn, Zn, Co, Cr, P, Cu) was analyzed, by using inductively-coupled plasma-mass spectrometry (ICP-MS) and inductively-coupled plasma-optical emission spectrometry (ICP-OES) after microwave digestion. The color (Lovibond tintometer), free fatty acidity and peroxide values in the chemically refining process varied between 2.7-16, %0.09-2.12, 10.95-1.08 mEqO2/kg, respectively. Oleic, linoleic and linolenic acid contents changed between 30.486-30.580%, 54.339-54.703% and 0.972-0.993%, respectively, in the chemically refining stages. While no trans fatty acids detected in crude corn oil and after degumming-neutralization step, very low amount of trans oleic acid (0.040%) and total trans linoleic acid (0.132%) was detected in bleached corn oil. The total trans fatty acid content little more increased in the last stage of the chemically refining. However, total trans fatty acid content of refined corn oil was < 0.3%. It was clearly seen that Na, Mg, K, P, Ca, Mn, Fe, Pb, Ni, Cr, Cu element contents decreased significantly at the end of the chemically refining process. Although Cd, Co and Zn elements were determined in crude corn oil, these elements were not detected in the refined corn oil. The results obtained showed that the chemically refining process effected some of the quality properties of corn oil and especially the changes in the element contents.
Show more [+] Less [-]