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Investigation of Antioxidant Potential and Phytotoxic Effects of Ganoderma lucidum Methanol Extract Texte intégral
2016
Fuat Bozok | Tülin Eker | Gökhan Sezer | Adnan Bozdoğan | Hasan Hüseyin Doğan | Saadet Büyükalaca
The aim of this study is to reveal allelopathic effects and antioxidant activities of methanolic extract of Ganoderma lucidum in Zorkun plateau (Osmaniye). It was determined that methanolic extract of G. lucidum has significantly phytotoxic effect by increasing the doses (1, 2, 4, 8 mg/mL) on Hordeum vulgare and Triticum aestivum. Total phenol and flavonoid amounts of G. lucidum were 114.55 mg/kg and 8.95 mg/kg, respectively. 2,2-diphenyl-1-picrylhydrazyl (DPPH), scavenging activity (60%, 91% and 92%), reducing power (0.83, 1.43 and 2.23 Abs), and nitric oxide (NO) scavenging activity (48%, 55% and 70%) of this mushroom at the different concentrations (1.25, 2.5 and 5 mg/mL) were determined, respectively. However, H2O2 scavenging activity of the different concentrations (0.0156-0.125 mg/mL) was found as 18%, 56%, 60% and 86%, respectively. Based on these findings, it can suggest that G. lucidum methanolic extract has significantly phytotoxic effect and antioxidant activity. The present study is the first report on the phytotoxic effects and antioxidant activities of G. lucidum which consumed and collected from Amanos Mountains.
Afficher plus [+] Moins [-]Effects of Different Organic Fertilizers on the Yield and Quality Traits of Seed Potato Cultivars (Solanum Tuberosum L.) Texte intégral
2016
Hasan Eleroğlu | Kürşat Korkmaz
This study was conducted to determine the effects of use organo-mineral fertilizers and poultry manure on yield and quality of seed tubers different potatoes varieties (Solanum tuberosum L.). The study was designed in three replicated completely randomized block factorial design with eight potato cultivars (Madaline, Provento, Marfona, Agata, Arizona, Mustang, Rumba and Saviola) and including three different fertilizer as Hexaferm organo-mineral (%20 organics, 8-21-0+Zn), compost (1 t da-1) and fermented poultry manure (1 t da-1). In order to determine the effect of fertilizer forms on the yield and quality characteristics of different varieties of potatoes were examined features like output time of the tuber, output rates, plant height, stem number per hill, tuber yield per hill, total tuber yield, cracks tuber yield, dry matter content, starch content and specific gravity. Used fertilizers have no significant effect on output time of the tuber, output rates, plant height, stem number per hill, total tuber yield, dry matter content, starch content and specific gravity of varieties. The difference observed in terms of output time of the tuber, output rates, plant height, stem number per hill between the varieties was insignificant. The difference between the average tuber yield per hill, total tuber yield, cracks tuber yield, dry matter content, starch content and specific gravity of varieties were significant. Similarly, the fertilizers had a significant effect on the average tuber yield per hill of varieties . The significant interactions were found on traits average tuber yield per hill and average specific gravity between Fertilizer x Varieties. As a result, considered economically the fermented and compost poultry manure can be used instead of organo-mineral fertilizers in the production of seed potatoes.
Afficher plus [+] Moins [-]Kinetic Modeling of Enzymatic Dechlorination of 2,4,6-Trichlorophenol with Laccase Enzyme obtained from white rot fungus Trametes versicolor Texte intégral
2016
Arzu Ünal | Nazif Kolankaya | Abdurrahman Tanyolaç
This study examined kinetic modeling of the detoxification induced by dechlorination of laccase enzyme obtained from Trametes versicolor which is a white rot fungi strain and 2,4,6-trichlorophenol which is a toxic chlorinated phenolic compound. In the evaluation of the kinetics of detoxification induced by dechlorination of 2,4,6-trichlorophenol used as substrate, the Systat 10 software package which is a statistics program was used while two-substrate solution environment was used to explain the kinetic behavior of the dechlorination. It was observed as a result of experiments and statistical analysis that Moser equation is the optimal kinetic model. Given the statistical data obtained and the graph, the dual-substrate model was found to be compatible with the experimental data. The bio-kinetic parameter values obtained for the model that identifies enzymatic dechlorination kinetics were calculated as Vmax =9.341 ppmO2/min, Ks =38.254 g/L, Ko =20.747 ppm, R = 1.895 and N = 1.233. In the literature, no studies were found on kinetic modeling for the degradation of 2,4,6-trichlorophenol, and through this study, we have been first to conduct a study on kinetic modeling of the degradation induced by enzymatic dechlorination of 2,4,6-trichlorophenol. The GC/MS analysis results showed that the chlorophenolic compound used throughout the enzymatic dechlorination performed with laccase enzyme was degraded 80% to 100%. Based on the GC/MS analysis results, the conclusion that the enzyme responsible for the dechlorination was laccase was also found to support the findings available in literature.
Afficher plus [+] Moins [-]Marketing Structure, Problems and Suggestions of Small Ruminant Production in Çamardı District of Niğde Province Texte intégral
2016
Arzu Seçer | Mustafa Boğa
In Turkey, there are 31.1 million head sheep in 2014. Central Anatolia Region has 8.3% of this total number. Nigde is the most important sheep producer province in this region. In this study it is aimed to determine marketing structure of products obtained from sheep production activities, define problems of it and present solutions for these problems. The main material of the research was consisted of primary data obtained from 39 Akkaraman sheep producers in Çamardı district in Nigde. In the sheep farms, milk production yield was 1374.4 kg per year. As 73.5% of this yield was presented to market, rest of it was used for self-consumption. Milk was generally sold to local traders. In the operations, livestock also was sold. When 89.7% of livestock sold to kasaps 10.3% of it was sold to local traders. It can be said that producers who are the members of cooperatives were very low and 51.3% of the producers stated that cooperatives can be useful for the solutions of marketing problems of sheep products. Main expectations of producers from cooperatives were providing them market alternative, providing easiness for processing of products and leading to increasing numbers and kinds of buyers in the market.
Afficher plus [+] Moins [-]Usage of Edible Mushrooms in Various Food Products Texte intégral
2016
Özge Süfer | Fuat Bozok | Hande Demir
Using of edible mushrooms which are generally consumed in houses in dried form is based on mainly instant soup and sauce formulations. Recently, the cultivations of Agaricus bisporus and Pleurotus ostreatus species have become widespread. Utilization of these cultivated mushrooms in recipes would bring added value to related food products. For this purpose, Agaricus bisporus and Pleurotus ostreatus species farmed in Osmaniye Korkut Ata University Mushroom House were dried and then pulverized. Firstly, a snack was prepared with Agaricus bisporus powder. Agaricus bisporus powder was substituted for wheat flour at the rates of 5 %, 10 %, 20 % and 30 % and thus the potential of food product which had relatively lower carbohydrate and fat level and higher fiber content was investigated. In the second part of the study, either 5 %, 10 % of Agaricus bisporus powder or 5 %, 10 % of Pleurotus ostreatus powder were added into traditional Turkish meatball (beef mince, salt) which was cooked in conventional oven, so meat flavor could be replaced by herbal flavor coming from mushroom. This property mat obey the purpose that, the created new product will be consumed fondly especially by children. Sensory and physical (colour and texture) analysis were performed in both snack and meatball samples and the results were evaluated statistically.
Afficher plus [+] Moins [-]Effect of Drying Methods and Pre Treatments on Nutritional Value and Sensory Quality of Fish (Oreochromis niloticus, Pylodictis olivaris and Cyprinus carpio) Species Commonly Used in Gambella Region Texte intégral
2016
Dagne Tarle | Mitiku Guya | Solomon Abera | getachew bekele fereja
This study was conducted to assess the effect of drying methods and pre-treatments on nutritional content and sensory quality of dried fish. The experiment was conducted in factorial arrangement of 2×3×2 with two drying methods (sun and oven drying), three fish species (tilapia, cat fish and carp) and two preservatives treatment (garlic and ginger juice) laid out in Completely Randomized Design (CRD). Fresh fillets were analysed for their nutritional value and sensory quality. The compositions of the fresh fillets were 6.50-7.59% for ash, 74.20-76.67% for protein, 8.06-9.09% for fat and 8.47-9.12% for total carbohydrates. Drying reduced the moisture contents from 74.74-75.81% to between 7.76-8.25%, making it safe for storage. The ash content changed from 7.11 to 7.34 and from 6.50% to 6.34% for cat fish and tilapia, respectively, with statistical significance whereas no change was observed in carp with 7.60% because of drying. Drying method had no difference in ash and protein contents while increase in fat from 7.75 to 9.44% and a decrease in carbohydrate from 9.37 to 8.13% were observed in sun dried samples than that of oven dried fillets. This study showed that nutritional values of dry fish did not statistically changed during storage period of 3 months.
Afficher plus [+] Moins [-]A Comparative Study Of Probioticated Kunun-Zaki By Probiotic Strains Of Pediococci spp. And Lactobacillus rhamnosus GG Texte intégral
2016
Bukola Christianah Adebayo-tayo | Soore Daniel Ademuwagun | Solomon Omoniyi Alao
Non-dairy probiotic functional foods are receiving considerable interest recently owing to the inability to cause allergy in certain segments of the population. Studies on probiotication were carried out to determine the suitability of kunun-zaki as food matrix for production of probiotic beverage using single and mixed culture of Pediococcus acidilactici KU7, Pediococcus pentosaceus CREC5 and Lactobacillus rhamnosus GG. Probioticated and un-probioticated kunun-zaki samples were designated PKZ and UPKZ, respectively. There was a significant difference in the viable count during storage. Viable counts of the LAB strains decreased with increasing storage time with P. acidilactici KU7 having the highest viability at the beginning and end of storage (3.43 ± 0.06 and 0.93± 0.12 x108 cfu/ml). There was a decrease in pH of the PKZ samples within the 1st and 3rd week with corresponding increase in lactic acid production (71.16 ± 0.01 – 441.39 ± 0.01). Marked increase in pH and a decline in lactic acid were observed at the 4th week of storage in all samples. Total soluble solids content of the beverage was observed to decrease with increasing storage time ranging from 8.25 ± 0.01-4.97± 0.01. There was no significant difference in pH and total soluble solids of UPKZ and colour of the PKZ and UPKZ samples during storage. All the PKZ samples were able to inhibit the growth of selected pathogens with marked variability amongst the samples. The UPKZ sample also showed slight inhibitory activity. The samples showed a decline in proximate and mineral composition at the end of storage. Sensory evaluation showed the PKZ samples were preferred over the UPKZ samples. This study shows that probioticated kunun-zaki can serve as a suitable non-dairy alternative to dairy probiotic formulations and would be of health benefits to potential consumers.
Afficher plus [+] Moins [-]Agricultural Extension Contact and Farmer’s Income in Bangladesh Texte intégral
2016
Abu Zafar Mahmudul Haq
The impacts of extension contact on income of farmers have been examined with a view to evaluate the agricultural extension services in Bangladesh. The scope of the study was ten villages of Gazipur of Bangladesh. The objective of the study is to identify the effect of extension contact on crop income, livestock income, fisheries income, miscellaneous income, total agricultural income, nonagricultural income and total income of farmers. The sample of the study consists of 1000 farmers. Data came from field survey and multistage random sampling technique was used for the collection of data. The results indicated that the impacts of extension contact coefficients on crop income, nonagricultural income are positive and significant. However, the impacts of extension contact coefficients are not significant in the cases of livestock, fisheries, miscellaneous and agricultural incomes. But it does not mean that agricultural extension has no reward in Bangladesh. The sample data indicates that the impact of extension contact on total income of farmers is positive and significant. The study concludes that agricultural extension is necessary to raise the income of farmers.
Afficher plus [+] Moins [-]Effect of Plant Growth Regulators on Fruit-set and Quality of Guava Texte intégral
2016
Shreef Mahmood | Md. Nazmul Hasan | S.M. Younus Ali | Rafija Alam Ripa | Md. Golap Hossain
Two plant growth regulators: β-NOA (50 and 80 ppm) and GA (200 and 250 ppm) were applied to emasculated flowers at anthesis to set parthenocarpic fruit, while in the control treatment fruit set was achieved by natural pollination. The application of β-NOA found ineffective in setting parthenocarpic guava. No significant differences were observed in the length and diameter of fruit between parthenocarpic and naturally pollinated seeded fruit at different days after anthesis. The mean fruit weight, TSS and ascorbic acid content of parthenocarpic fruit were similar to that of seeded fruit. Significant higher amount of total polyphenol was detected in the seeded fruit than the parthenocarpic fruit. Although 200 ppm GA showed comparatively better response to fruit growth, TSS and ascorbic acid content than 250 ppm GA but not in a statistical level.
Afficher plus [+] Moins [-]Influences of Rosemary Essential Oil on Some Blood Parameters and Small Instentine Microflora Laying Hens Texte intégral
2016
Tülay Çimrin | Murat Demirel
This experiment was designed to investigate the effects of antibiotic, vitamin E and rosemary essential oils in various doses on some blood parameters, beneficial and harmful microorganisms in instentine jejunum microflora of lying hens. The experiment was conducted according to random parcel experiment design. A total of 240 Bovans genotype and 32 weeks aged were equally divided into 6 groups (8 hens in each group with 5 replicates). While the control group was fed with basal diet the treatment groups were supplemented with 500 mg/kg antibiotics; 200 mg/kg vitamin E; 100, 200, and 300 mg/kg REO to basal diet for 90 consecutive days. The result showed that there were no effects of all additions to basal diets on examined blood parameters. Antibiotic and all rosemary essential oils doses to basal diet affected the instentine jejunum bacteria content by decreasing probable coliforms, faecal coliforms, Escherichia coli (E. coli) and Clostridium perfringens (Cl. perfringens) bacteria level significantly. While a 100 mg/kg rosemary essential oils dose was of the same influence with antibiotic (500 mg/kg) on all bacteria species, 200 and 300 mg/kg doses applications were more effective on E. coli compare to antibiotics. 300 mg/kg doses applications dose was more effective on probable faecal coliforms than antibiotics. As conclusion, the results shows the rosemary essential oils has the high antimicrobial effect on some pathogenic bacterias and could be used in laying hen for feed addition.
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