Theses (MÉK)

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https://hdl.handle.net/2437/251429

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Megjelenítve 1 - 20 (Összesen 152)

Korlátozottan hozzáférhető
Factors influencing the colostrum quality of dairy cattle
Preampree, Kunpriya; Komlósi, István; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
The aim of this study is to investigate different factors affecting the quality of colostrum, including number of lactations, season of calving, time of birth, and sire of dam, in order to improve the health management of young calves. Mainly, 919 dams in their first to seventh lactations and 919 calves from Nyakas farms, Hajdúnánás, Hungary, were enrolled in this study. After that, colostrum obtained from the dam was measured in volume and quality. As well as the level of immunoglobulin G, serum obtained from calves provided with colostrum was assessed for IgG concentration within two to five days. In addition, the scale for measuring the quality of colostrum and the level of IgG was in %Brix which was performed by a Milwaukee Refractometer (MA871) and a MISCO Palm Abbe refractometer, respectively. After all the data were recorded, different parameters were calculated by Software R version 4.1.2 regarding the factors affecting the quality of colostrum.
Korlátozottan hozzáférhető
Development of traditional recipe for Ajvar by enrichment of turmeric and dietary fiber
Karovski, Glorija; Máthé, Endre; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
In this thesis I decided to come up with a new recipe for Ajvar that would be unique and different from the traditional one, and at the same time I would improve its nutritional value, which in some ways can help prevent many diseases. The ajvar I made is with turmeric and dietary fiber that will help with its consumption for diseases such as Alzheimer's disease.
Korlátozottan hozzáférhető
Development of an agricultural sensor hub for dynamic data assimilation for real-time variable rate irrigation decision-making models
Oguche, Felix Michael; Nagy, Attila; Fehér, Zsolt Zoltán; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
The shortage of freshwater resources around the globe gives rise to the need for their optimum usage, real-time soil moisture monitoring is essential in the irrigation decision support system. More water wastage can be reduced by watering based on plants’ needs and not just watering considering only the volumetric water content of the soil, which is not a true reflection of what plants need to yield maximumly in quality and quantity. This project was developed, calibration and comparison of the affordable real-time and self-powered systems for soil moisture monitoring with a commercial sensor were carried out at the soil physics laboratory of the Institute of Water and Environmental Management, Faculty of Agricultural, Food Science, and Environmental Management University of Debrecen, Hungary in February 2022. Double reciprocal mathematical model: Y = 1/(a + b/X) calibration curve was the most suitable to describe the laboratory experimental of Agrotronic instrument behaviour in soil, which gave the sensor a more sensibility as moisture increases. It effectively works between oven-dry and field capacity states of the soil particle. The accuracy of the Agrotropic instrument is ±0.10, ±0.09, and ±0.08 %VWC for soils samples 1, 2, and 3, respectively and it is associated with the half distance between upper and lower bounds. The efficiency increases as the moisture content increases in the soil. The intelligence of the proposed solution is based on an intelligent algorithm and soil parameters (field capacity point, the water stress (MAD) points, and soil matric potential). The system is fully functional, and the prediction results are very encouraging.
Korlátozottan hozzáférhető
Genetic parameters and genetic trends in the fitness trait of the Hungarian Simmental dual-purpose cattle breed
Sam, Bernard Abeiku; Komlósi, István; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
To determine the genetic parameters and genetic trends in the fitness of the Hungarian simmental dual-purpose breed. Various parameters where measured such as age at first successful insemination, number of insemination, cow lactation number.etc
Korlátozottan hozzáférhető
Analysis of physical-chemical properties of two types of dietary fiber enriched steamed bread and their application
Zhang, Miaomiao; Máthé, Endre; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
Corn flour added and psyllium husk enriched steamed bread. The healthy effect on humen beeings of corn stuff. The high fiber content food product is good for people. Soft food stuff for the elder groups.
Korlátozottan hozzáférhető
The developing of the new forumulation of rice pumpkin cookies involved with entomophagy (grasshoppers)
Sam, Sokneang; Máthé, Endre; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
The developing of new formulation of rice pumpkin cookies involved with edible insects (grasshopper)is to suggest a way of which we can use more of both pumpkin and rice productions in food production and consumption which can be a solution to solve the current agriculture waste in Cambodia as well to promote of food culture of eating insect in the country.
Korlátozottan hozzáférhető
Evaluation of total polyphenol and flavonoid content of malt flour extracts and analysis of their effects on the viability of drosophila s2 cells
Islam, Md. Aminul; Máthé, Endre; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
Increasing attempts to utilize malt flours in the food industry have been made in recent years because of their biological as well as antioxidants properties. In this study, a hot water extraction method was applied to obtain extracts that were further used to determine the Total Flavonoid Content (TFC) and Total Polyphenol Content (TPC). Since the antioxidants, and particularly flavonoids, have the capacity to regulate several cellular activities in a dose-dependent manner; we set to analyze the viability of Drosophila Schneider 2 (S2) cells by assessing seven different malt flour extracts and each of them at five different concentrations. We successfully fulfill the objective by observing that, the viability of cells can be retained by employing a lower concentration of MF extracts while the processes of apoptosis and necrosis are responsible for the variations in viability in different concentrations. Also concluded that the Malt Flours under investigation are good antioxidant raw materials that can be used to enrich newly developed foods.
Korlátozottan hozzáférhető
Analysis of maize nutritional status exposed to abiotic stresses based on uav monitoring system
Kgopa, Lucky Madimetja; Radócz, László; Bojtor, Csaba; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
The research was aimed at analyzing the nutritional status of Maize exposed to abiotic stresses using Unmanned Aerial Vehicle (UAV). The experiment was conducted at Látókép Crop Production Experiment Site of the University of Debrecen, Hungary. Treatments of nitrogen were applied in both irrigated and none-irrigated fields. Huge connection was noticed for the NGRDI, RGBVI and VARI records with the nitrogen content, which embraces them as suitable in distinguishing proof of the nourishing status of corn concerning nitrogen. The outcomes showed that cultivating maize with a water shortage without a huge lessening in yield was incomprehensible.
Korlátozottan hozzáférhető
Implementation of a halal assurance system (HAS) in meat industry
Smiai, Oumayma; Pusztahelyi, Tünde; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
As there is growing concern and demand not only for food quality and safety, but also for food compliance with religious constraints. Quality tools identify what consumers require as well as analyzing the market's future state. The purpose is to examine the implementation of a Halal assurance system (HAS) in meat industry in an EU-country by broadening of the “Hazard Analysis and Critical Control Point (HACCP) system”. Also, using “Failure Mode and Effect Analysis (FMEA)” for identifying recommendations for good practices for Halal meat slaughtering. This paper will give industry players in the Halal food business clearer recommendations for implementing HAS.
Korlátozottan hozzáférhető
Development of fiber fortified potato bread
Enkhbold, Myagmarjav; Máthé, Endre; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
The emphasis is on health promoted food products nowadays. So, the trend today is to produce specialty bread made with functional ingredients known as health promoted bread. In order to improve the health benefit of the bread, there have done fiber fortified potato bread experiments that were done. This study included 3 different recipes, ingredients, and 3 different analyses, which are volume determination, formal ratio, and baking loss to analyze the physical properties of the developed potato bread prototypes. From the results, 2nd bread making technology has shown the best indicators. Also, in this development of bread, organoleptic evaluation of the experiments clearly shows that the experimental variations of 2nd bread making technology were most compatible. The tasters provided with 3 different bread samples with good acceptance, especially the 2nd bread which was more aromatic and soft taste as well as better in texture.
Korlátozottan hozzáférhető
Apple juice quality modeling using Raman and Mid-infrared spectroscopy coupled with chemometrics
Budisetyowati, Novarian; Elek, János; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
The amount of apple juice consumption keeps increasing as it is the one of the most popular agri-food product in most countries. Current analysis method focused on physiochemical parameters that can be measured in fruit juice sample, such as taste, pulp concentration, acidity, brix level, texture, the level of additives. The primary objectives of this study are developing a model to predict apple juice quality and examining whether the model is suitable to predict the quality of apple juice of different quality level. Overall, MIR spectroscopy results into better PCA model compared to Raman spectroscopy. It can be seen that sample groupings of good and bad quality are achieved by PC1, PC2 and PC3. Prediction of test set using LDA model from training set results into 100% of accuracy for all data measured with Raman and MIR spectroscopy, indicating the suitability of the model to predict the quality of different samples measured at the same time and same instrument.
Korlátozottan hozzáférhető
An overview of food safety standards and institutions in Kenya
Kamina, Barbra Wausi; Máthé, Endre; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
Food safety in Kenya has great potential in being improved however it faces few hindrances such as lack of capital to boost small scale industries like in the suburban areas to ensure they can maintain high level of hygiene. In addition to this there is also the issue of lack of consumer awareness which means that the public do not have the knowledge of proper food hygiene and this is one of the major causes of food borne diseases. Based on the analysis we can see that one of the common threats to food safety is corruption. Corruption is a common thing in most African countries, and this leads to production of low quality products as the laws are not being implemented. In my opinion harsh fines or more strict laws should be implemented in order to curb this situation. The respective governments should also increase the wages of the various institutions to reduce the corruption rate.
Korlátozottan hozzáférhető
Assessment of climatic water balance and estimation of crop and irrigation water requirement of sorghum on the bases of short period climatic data (2015-2019) in hamelmalo
Gebregergish, Mehari Gebreyesus; Zsembeli, József; Kovács, Györgyi; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
Agricultural production is an important sector for peoples to live but it is highly affected by climate change and requires good understanging of each climatic parameters. Hamelmalo, the study region is vulnerable to climate change which is realized by total production loss but there is no concrete reference due to lack of data for long time. However, in 2015, a meteorological station was established and one of the objectives of this study was to evaluate the available climatic parameters by comparing the observed value with expected value from local climate estimator model with chi square test for the year (2015-2019). Based on the result, all climatic parameters under test except precipitation were almost in par with the values from the model (LCE), which means no significant difference and from this we can understand that the most variable climatic parameter in Hamelmalo is precipitation. Generally precipitation shows average increment but not linearly which is unreliable and based on the ten years of precipitation record, annual precipitation is 445 ±23.9 mm with 2015 has lowest and 2019 has highest precipitation records. The region has mild climate and May is the hottest month and high PET but August is the month with lowest sunshine hours and PET and highest precipitation. Mean monthly relative humidity for all the month is above 70% excepte for May and June. PET decreases linearly from 2015-2019 and both PET and precipitation affects the climatic water balance of Hamelmalo with the most influencial is precipitation. Since precipitation is variable, CWB is also variable with the highest varibility in the month of July. There is no variation in CWB in Hamelmalo during non rain season. Since rain start from June variation in CWB also starts from this month but the varation is not much especially from mid of the month due to less varation in precipitation. The same in August with high precipitation, and high cumulative CWB, the varation is not much and it is positive CWB with most reliable for plant growth. Temperature also contribution in CWB decrease as it affects PET especially in 2016 with the hottest year in the world. Nevertheless changes in the CWB, as a reaction to changes in P and ET, have not yet been tested carefully in many parts of the world, including Eritrea. This analysis shows that the annual cumulative CWB in Hamelmalo was negative due to 67% of the year is dry season without precipitation leads to negative CWB and based on the study 2015 has the highest potential evapotranspiration and lowest precipitation and this causes lowest climatic water balance in the that year opposite to this 2019 has lowest potential evapotranspiration and highest precipitation and leads to higher climatic water balance. However, the value of climatic water balance for each month does not depend on the total precipitation or evapotranspiration, but it depends on the precipitation and evapotranspiration of individual months. The aim of this study was also to estimate the crop and irrigation water requirements on sorghum cultivation in Hamelmalo, Eritrea and Climate data from 2015–2019 were obtained from the weather station at the Hamelmalo Agricultural College (HAC), Hamelmalo. The CROPWAT model 8.0 was then used to determine the rate of reference evapotranspiration (ETo), effective rain fall, evapotranspiration of sorghum (ETc) and irrigation water requirements (IWR) in Hamelmalo, Eritrea. The results showed that the annual ETo from 2015-2019 at the station was 1641.72 mm and the total effective rainfall was 389.7 mm out of 472.9 mm received during this period, representing 82.4% of the rain received. Based on the result, the total sorghum evapotranspiration rate (ETc) from 2015-2019 was measured as 391.3 mm/ growing season when sowing time was 1st of July and 390 mm/growing season when sowing time was 20th of June. The irrigation requirement was measured as 181.6 mm/ growing season when sowing time was 1st of July and 134.6 mm/ growing season when sowing time was 20th of June. additionally, high yield decline are expected in the mid and late developmental stages because the mid and late developmental stages require more water than other stages especially during mid-season stage water is highly important. Given the low and highly variable precipitation in Hamelmalo, Eritrea, much enough yields will only be realized if additional irrigation water is supplied. It is therefore highly recommended that changing planting dates to meet with the needed precipitation should put in to account. Sowing earlier in June is much better than in July and also allocating water to the most critical crop developmental stages which would help to maximise yield.
Korlátozottan hozzáférhető
Analysis of physio-chemical properties of Hungarian monofloral honey types
Khan, Ahzam Afnan; Czipa, Nikolett; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
This thesis is about Analysis of physio-chemical properties of Hungarian monofloral honey types. Determining pH, diastase activity, sugar & moisture content, proline content, electrical conductivity, total phenolic content. honey types are acacia honey, Sunflower honey, Forest honey, linden honey, rape honey collected from various counties of Hungary.
Korlátozottan hozzáférhető
Assessing the effect of mineralization of different types of poultry manure on the pH, NO3- and NH4+ levels of sandy soil at different soil moisture levels over time
Karanja, Mary Waithera; Nagy, Péter Tamás; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
This study focused on assessing nitrogen mineralization in sandy soil amended with different types of poultry manure. The pH, NO3- and NH4+ levels in the soil were assessed at different soil moisture conditions over a short laboratory aerobic- incubation period. The objectives of the study were: (1) To assess the pH levels of the manure-amended soil at different soil moisture conditions during the aerobic incubation period, (2) To assess the NO3- levels of the manure-amended soil at different soil moisture conditions during the aerobic incubation period, (3) To assess the NH4+ levels of the manure-amended soil at different soil moisture conditions during the aerobic incubation period.
Korlátozottan hozzáférhető
Milk quantity and milk quality analyses based on HACCP at Béke Mezőgazdasági Kft.
Jargalsaikhan, Amarjargal; Nikolett, Szőllősi; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
In the present, we discussed the milk quality and quantity based on HACCP at A Béke Mezőgazdasági Kft. The objective of the my research is to evaluate milk yield and quality parameter at Béke Mezőgazdasági Kft. Milk samples were collected and analyzed to determine milk quality components.The sample taken is analyzed in the laboratory of Állattenyesztési Teljesítményvizsgálo (Át)Kft. Milk fat, milk protein, lactose, somatic cell count and urea content are measured.
Korlátozottan hozzáférhető
Impacts of the use of gluten-free cereals and spices on the quality parameters of beer
Orhotohwo, Oghenetega Lois; Czipa, Nikolett; Alexa, Lóránd; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
The purpose of this study was to prepare different pale beers by using selected gluten-free ingredients that will be suitable for people suffering from celiac disease. The quality attributes of wort and beer produced entirely from malted oat grains alone, malted oat with corn flakes and also with rice flakes mixed with various quantities was examined. The physiochemical characteristics of the different gluten-free beer with the addition of ginger in comparison to barley-based beers, as well as the beer having ginger was determined among others. The cereal blends possessed some promising attributes as an adjunct for gluten free beer brewing. Even though the produced beer is suitable for people suffering from celiac disease, the barley-based beer showed some better nutritional traits compared to the gluten-free beer.
Korlátozottan hozzáférhető
Heat stress induced changes in some blood parameters in pigs
Leite Rodrigues, Marjorie; Szabó, Csaba; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
The study's main objective was to investigate the effects of chronic HS on pigs and how they could be mitigated by dietary treatments that included antioxidant nutrients such as vitamin C, vitamin E, zinc, and selenium. The animals were divided into four treatment groups (three pens per treatment) based on their live weight. Three dietary treatment groups will be placed in the high-temperature room: basal feed (HC), elevated 1 (HE1), and elevated 2 (HE2) (HE2) Two additional dietary treatments (E1 and E2) were developed by supplementing with increased levels of vitamin E, vitamin C, Zn, and Se (organic source). We can conclude from this study that antioxidants help pigs maintain their temperature better when compared to pigs in heat stress who do not receive a feed supplement. Furthermore, creatinine levels were surprisingly higher than expected, particularly in pigs given double the amount of antioxidants. However, it is important to note that more research and investigation are required to better understand the benefits of antioxidants in overcoming heat stress.
Korlátozottan hozzáférhető
Optimal age of breeding gilts and its impact on lifetime performance
Osotsi, Joab Malanda; Novotniné-Dankó, Gabriella; Balogh, Péter; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
Though the present study was an observational analysis of retrospective data records from commercial piglet producing herds, our results could be biased by growth rate of gilts, weight at first breeding and backfat thickness at first breeding which we did not measure. However the present study adds to scientific work by providing valuable findings regarding the significance of age at first breeding and its relation with lifetime performance helping swine producers and veterinarians to put in practice for productivity in the swine industry. Analyzing collected and stored farm data using appropriate statistical tools has proved to provide valuable solutions that could not have been established on a time restricted controlled experiment. Swine producers and veterinarians can now adequately rely on retrospective data analysis to spruce out solutions on the challenges that are facing the swine industry.
Korlátozottan hozzáférhető
Comparative study of physicochemical properties of Busha whey from Kosovo and Hungarian whey milk
Samadraxha, Adhuron; Czipa, Nikolett; DE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar
The aim of the research was to identify the mineral content, flavonoid and phenolic content of whey as well as pH level and acidity level of whey, this research also aims to compare these results with whey samples from Hungary. These analyses of Busha whey from Kosovo and whey samples from Hungary were performed by using different methods and equipment in order to achieve all of the analysis. For this to be possible was performed with various instruments such as: ICP-OES (Inductively Coupled Plasma Optical Emission Spectroscopy), Spectrophotometer and pH meter. ICP-OES is used to determine each element content in whey samples, while Spectrophotometer is used for the determination of total phenolic content (TPC) and flavonoid content. pH and acidity level were determined by pH meter and burette respectively.

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