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Antimicrobial and Antioxidant Properties of Phosphates Used in Meat Products Texto completo
2017
Azim Şimşek | Birol Kılıç
Phosphates are widely used as food additives in meat products to increase the water-holding capacity, reduce the cooking loss and improve the textural properties. Furthermore, phosphates protect aroma and accelerate the formation of cured meat color as well as having antioxidant and antimicrobial effects. Many research about using phosphates in meat products showed that increasing chain length of phosphates improves antioxidant and antimicrobial effects. It has been stated that vacuum or modified atmosphere packaging, the use of phosphates with natural antioxidants and encapsulation of phosphates are useful approaches to enhance the antioxidant effects of phosphates. It has been reported that irradiation, vacuum or modified atmosphere packaging, storage at low temperature and the use of the salt provide strong synergistic effect on the antimicrobial properties of phosphates. In this review, researches about antioxidant and antimicrobial properties of phosphates and suggestions for the meat industry about industrial applications of phosphates are presented.
Mostrar más [+] Menos [-]A Post-Harvest Prediction Mass Loss Model for Tomato Fruit Using A Numerical Methodology Centered on Approximation Error Minimization Texto completo
2017
Francisco Javier Bucio | Cesar Isaza | Jose Amilcar Rizzo Sierra | Jonny Zavala de Paz | Ely Karina Anaya Rivera | Enrique Gonzalez Gutierrez
Due to its nutritional and economic value, the tomato is considered one of the main vegetables in terms of production and consumption in the world. For this reason, an important case study is the fruit maturation parametrized by its mass loss in this study. This process develops in the fruit mainly after harvest. Since that parameter affects the economic value of the crop, the scientific community has been progressively approaching the issue. However, there is no a state-of-the-art practical model allowing the prediction of the tomato fruit mass loss yet. This study proposes a prediction model for tomato mass loss in a continuous and definite time-frame using regression methods. The model is based on a combination of adjustment methods such as least squares polynomial regression leading to error estimation, and cross validation techniques. Experimental results from a 50 fruit of tomato sample studied over a 54 days period were compared to results from the model using a second-order polynomial approach found to provide optimal data fit with a resulting efficiency of ~97%. The model also allows the design of precise logistic strategies centered on post-harvest tomato mass loss prediction usable by producers, distributors, and consumers.
Mostrar más [+] Menos [-]Organic Plant Production in the Black Sea Region Texto completo
2017
Ahmet Öztürk | Besim Karabulut
Organic agriculture approach started with coming up the adverse effect’s of chemical and genetic inputs on human health and natural environment in time, it has been also continued by raising the importance nowadays. Organic agriculture production amount of Turkey was 331.361 tons in 191.785 ha areas, although it was reached up to 1.627.106 tons (391% increased) in 379.042 ha (98% increased) areas. Black sea region has nearly 18.000 ha area (4.7%) of organic agriculture areas of Turkey. The region has organic agriculture potential with regard to regional land structure and qualification of produced products. In 2010, organic agriculture production was 31.960 tons in 88.322 ha areas, although it was 119.425 tons (274% increased) in 18.061 ha (80% decreased) areas in 2016. In recent years, Rize (57%), Tokat (14.6%), Ordu (7.5%), Gümüşhane (4.9%) and Samsun (3.8%) are leading provinces in the region in terms of organic production quantities. Tea (67.927 tons: 57.7%), hazelnut (11.785 tons: 9.9%), apple (11.253 tons: 9.4%), pear (5.207 tons: 4.4%), maize (4.705 tons: 3.9%) and alfalfa (4.301 tons: 3.6%) are major organic products of Black Sea region. At present study, current situation of organic plant production and potential in the Black Sea region were presented.
Mostrar más [+] Menos [-]Analysis of Major Nutritional Components of Pleurotus pulmonarius During the Cultivation in Different Indoor Environmental Conditions on Sawdust Texto completo
2017
Tariqul Islam | Zarina Zakaria | Nasrul Hamidin | Mohd Azlan Bin Mohd Ishak
Pleurotus pulmonarius was cultivated in three different environmental conditions, in ambient indoor environment (System 1), in humidifying without ventilation (System 2) and in humidifying with ventilation (System 3) to analyse the major nutritional contents. Sawdust was the main substrate for all the cultivation systems. The lowest temperature and the highest optimal humidity were found in System 3. The temperature and humidity had shown statistically significant among the three cultivation Systems. The highest numbers of flushes was found both in System 2 and System 3 but System 1 was produced mushrooms till 3rd flush. About 29.5%, 28.3%, 28.5% protein; 59.0%, 55.8%, 54.3% carbohydrate and 3.8%, 3.5%, 3.3% lipid were found in System 1, System 2 and System 3 respectively. The protein, carbohydrate, and lipid contents were shown statistically insignificant among the cultivation systems. The highest value of protein, carbohydrate and lipid were found for the sample of 1st flush in all the cultivation systems but the values were started to decrease with the increased numbers of flushes significantly. So, this study shown that, although the environmental conditions of the three cultivation systems were varied significantly but the protein, carbohydrate and lipid contents were existed their normal values in all cases but the values were decreased by the increased numbers of flushes.
Mostrar más [+] Menos [-]Farklı Azotlu Gübre Form ve Dozlarının Narince (V. Vinifera) Üzüm Çeşidinde Salamuralık Taze Asma Yaprak Verimine Etkisi Texto completo
2017
Rüstem Cangi | Halil Erdem | İsmet Acar | Neval Altıncı | Duran Kılıç
Bu çalışmanın amacı, Narince üzüm çeşidine (Vitis Vinifera L) üç farklı form (amonyum nitrat, amonyum sülfat, üre) ve 4 farklı dozda (kontrol, 5, 10 ve 15 kg/da N) azot uygulamalarının taze asma yaprak verimine olan etkisi araştırılmıştır. 2012 vejetasyon periyodunda kordon şeklinde terbiye edilmiş asmalar bir veya iki göz üzerinden (24 göz/asma) dekara 5000 göz olacak şekilde şarj edilmiştir. Azotun dört farklı dozu bölünmüş parseller deneme desenine göre 4 tekerrürlü olarak asmalara uygulanmıştır. Salamuralık genç asma yaprakları beş dönemde hasat edilmiş ve taze yaprak verimi (kg/da) belirlenmiştir. Hasat edilen yaprak örneklerinde gübre formlarının yaprak verimi üzerine etkisi istatistiki olarak önemli bulunmuştur. Taze asma yaprak verimi 312,4 kg/da (Kontrol) ile 437,1 kg/da (Amonyum nitrat 10 kg N/da) arasında değişmiştir. Azot dozları arttıkça asma yaprağı verimi de artmıştır. Azot uygulaması taze yaprak verimini yaklaşık %30 artırmıştır. Deneme sonuçlarına göre, en yüksek asma yaprağı verimi 10 kg N/da uygulamasından alınmıştır. Amonyum nitrat uygulamaları ile diğer gübre formlarından daha yüksek yaprak verimi elde edildiği ortaya çıkmıştır.
Mostrar más [+] Menos [-]Residual Effect of Poultry Manure and Mineral N Application on Maize Production under Wheat-Maize Cropping System Texto completo
2017
Syed Azam Shah | Wisal Mohammad | Haroon Haroon | Adnan Anwar Khan
The study was designed to asses the residual effect of organic N (Poultry Manure) and mineral N on maize crop in field experiments carried out on silty clay loam soil at NIFA, Tarnab, Peshawar, Khyber Pakhtunkhwa (KP) Pakistan during 2014-15. Combined dose of N from both sources were 120 kg ha-1 applied to wheat crop alone and in different combination making six treatments. Maize variety (Azam) was sown in Randomized complete block (RCB) design with four replications. Agronomic data, grains ear-1, 1000 grain weight, biomass grain yield data, N-uptake in maize grain and straw were recorded. Results showed that maximum grain ear−1, 1000 grain weight, biomass and grain yield was obtained from treatment where 25% N applied from poultry manure + 75% from mineral N source applied to previous wheat crop. Agronomic efficiency and nitrogen use efficiency were also found maximum in treatment where 75% poultry manure + 25% mineral N was applied. It was concluded from the study that residual effect of organic manure with mineral N in different ratios enhances crop productivity and soil fertility.
Mostrar más [+] Menos [-]Possible Use of Diatomite and Pumice-Amended Mortar and Plaster in Agricultural Structures Texto completo
2017
Serkan Yazarel | Sedat Karaman
This study was conducted to investigate the potential use of diatomite (a natural pozzolana) and pumice in plasters and mortars to be used in agricultural buildings. Compacted and loose unit weights, specific weight, water absorption, organic matter content, abrasion resistance of aggregate (sand and pumice) and pozzolana were investigated and materials were found to comply with the relevant standards. Test results on fresh (unit weight and slum test) and hardened (unit weight, capillary water absorption, total water absorption, bending and compressive strength, vapor diffusion test) mortar samples revealed that pumice and diatomite could be used in agricultural structures. Diatomite and pumice should be heat-treated and grounded before to use in mortars. In plasters to be made with abundant pumice and diatomite sources, high water holding capacity of the materials should be taken into consideration and further researches should be carried out about their compliance with the other materials.
Mostrar más [+] Menos [-]Economic Structure and Problems of Trout Enterprises: A Case of Fethiye Texto completo
2017
Hicran Ekmekci | Mevlüt Gül
In this study, economic structure and problems of trout enterprise were analysed in Fethiye district. It was aimed to determine the input of enterprises engaged in aquaculture at the Fethiye district, calculation of the economic situation, investigation of the market situation and determine problems. In addition possible solutions were tried to be to problems. In the district, it was interviewed with 17 trout enterprises. Data were collected with interviewing face to face by questionnaires. These data was analysed by MS Excel and SPSS programmes. 52.9% of the enterprises were established in the foothill, 35.3% were in open field and 11.8% were established in between valleys. 58.8% of these enterprises were individual enterprises, %17.6 was simple partnership and 23.5% were commercial partnership. The most shares in the active capital were constituted working capital with a rate of 70.3% whereas the share of landlord’s capital was 29.7%. The share of own capital in passive capital was 93.9% and the usage of foreign capital was low (6.1%). The share of variable cost was 83.6% while fixed cost was 16.4% in the total production cost. The main problem of enterprises was the rise of feed costs. A feed cost was found to constitute 63.4% of total production costs. Producers should be given support in terms of technical knowledge and efforts to raise awareness of local people and consumers should be made.
Mostrar más [+] Menos [-]Optimization of Liquid Medium for High Phosphate Solubilization by Serratia Marcescens Strain AGKT4 Texto completo
2017
Mohd Yusoff Abd. Samad | Sulaiman Zulkefly | Monsuru Adekunle Salisu | Mohd Jaafar Ahmad Kamil
This study is on the optimization of the medium for solubilization of phosphate based on the Box-Behnken design and response surface methodology. Optimization of the liquid medium for phosphate solubilization using Serratia marcescens strain AGKT4 was carried out by varying the concentrations of 3 ingredients; the fructose, peptone and inoculum size of bacteria. A mathematical model derived from the response surface methodology was then validated statistically for the target test variables. The highest phosphate solubilization in the medium was achieved at the optimal concentrations of fructose and peptone at 6% (w/v) and 0.6% (w/v), respectively. The maximum phosphate solubilization at these concentrations was 239.12 µg/mL. Under the same conditions, the bacterial growth in the medium was 9 log10 CFU.
Mostrar más [+] Menos [-]Threat Coming with Milk: Aflatoxin Texto completo
2017
Efsun Deligöz | Nebahat Bilge
Even though dairy products play an important role in infant and human nutrition, they may also cause food borne diseases. Milk toxin AFM1 is one of the most important public health hazards. This toxin is produced by animals after consuming contaminated feed with AFB1 which is known for its carsinogenic effects and then excreted in milk. Same as AFB1, AFM1 is also carsinogenic, neurotoxic, nephrotoxic, hepatotoxic and immunsupressive for humans and cannot be destroyed by sterilization or pasteurization. For that reason, studies on cost effective and rapid methods for detection and detoxification of AFM1 in milk are quite popular among researchers. In this review, the worldwide prevalence of AFM1 in milk and milk products has been presented as well as the developments in techniques to detect and detoxify.
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