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Effect of Lactococcin BZ and Enterocin KP on the Activity of Yoghurt Cultures
2015
Nilgün Öncül | Zeliha Yıldırım | Metin Yıldırım
In this study, the effects of lactococcin BZ from Lactococcus lactis ssp. lactis BZ and enterocin KP from Enterococcus faecalis KP (1600 AU/mL) on the activities of three different yoghurt cultures (Y1 and Y2: CHR Hansen, Denmark; Y3: Sacco, Italy) were investigated. Lactic acid bacteria counts and pH values of the samples were determined during the incubation period (at 42°C for 24 h). It was found that lactococcin BZ had bactericidal effect against only one yoghurt culture whereas enterocin KP was effective against two yoghurt cultures. When lactococcin BZ and enterosin KP were used in combination (1:1), they showed bactericidal effect against two yoghurt cultures.
Show more [+] Less [-]New Approaches to Anti-Stress Practices in Poultry
2015
Atilla Taşkın | Ahmet Şahin | Ömer Camcı | Güray Erener
Parameters of health, productivity, behaviour and physiology which are used in order to determine the stress shaped by the effects of various factors in poultries can only be detected when the effects of stress emerge; in other words, when the changes are shaped. Therefore; it is important to interfere before the emergence of these indications in order to develop animal welfare by preventing stress. Information programmes, as traditional methods, and vitamin applications as well as anti-stress effects of herbal extracts have recently been studied in order to reduce the effects of stress. Moreover; such applications as crossbreeding native race, which are highly tolerated against temperature stress, with the commercial ones, usage of blue LED light, capturing exercises, enriched environment, adding roosters into the flocks of hen and finally temperature exercises in chick period are also tried as anti-stress preventions. In this paper, new approaches to the reduction of stress or stress sensitivity in poultries have been studied.
Show more [+] Less [-]The Structure, Problems and Solutions of Fruit Sapling Producing Enterprises in Hatay Province
2015
Nuran Tapkı | Faruk Emeksiz | Erdal Dağıstan
In this study, examined the structure and problems of fruit sapling producing enterprises and offers solutions in The Hatay Province. The data were obtained from 92 enterprises by the method of full count and face to face with producers. Of the 51.15% population in creating family business primary school graduates, the proportion of university graduates remained at 8.62%. The rate of agricultural engineer employment in the businesses is 2.18%. While 64.05% of the enterprisers the father's profession, this profession began taking 3.37's% of nursery education. Average potential family labour is the 4.22 male labour forces in enterprises. The family labour utilization rate was calculated as 50.71%. Of the 88.48% in fruit sapling businesses, 5.32's% in other agricultural productions and 5.22's% in non-agricultural jobs of total used men workforce. The businesses have average total land size of 25.74 acres which it has established 12 acres of fruit sapling production land. While 74.58% of the total fruit sapling land is property, 25.42's% is for rent situation. The operating capital is calculated as the average of 229.308 TL. The most common species of fruit sapling production were citrus (46.20%) and olive trees (35.29%). The problems faced by most of the farms in the region were high input prices, excessive bureaucratic procedures preventing memberships into the union, an inadequate amount of support provided by the state, production-threatening diseases of plants and difficulties in finding qualified staff in the region. The results show that enterprises need to increase their production capacity, to unite under one organization to facilitate the resolution of problems.
Show more [+] Less [-]An Investigation into the Environmental Sensitivity and Awareness Level-A Case Study of Sarayönü District, Konya
2015
Muhammed Kamil Öden | Sezen Küçükçongar | Zehra Gök
The purpose of this study is to determine the environmental sensitivity and awareness level of the inhabitants in Konya, Sarayönü districts. In today’s world, the environment is rapidly being polluted and pollution rate is being increased by human beings. In this regards, the viewpoints of Sarayönü people on the environment and environmental elements are revealed. For this purpose, a research include variables such as gender, age, job and education level was carried out by using a questionnaire made up of 16 questions. The questionnaire was applied to 314 males and 286 females, totaling 600 participants. The research serves to raise an awareness of environment and environmental sensitivity. The findings showed that the people in Sarayönü have a high level of environmental sensitivity. Females tended to reflect a higher level of sensivitiy to the environment than males. The participants opted for air pollution as being the most important environmental element among the air, water, soil etc. pollution.
Show more [+] Less [-]Analysis of the Factors Affecting the Consumers’ Attitude and Behaviors towards the Poultry Meat Consumption
2015
Yavuz Topcu | Ahmet Semih Uzundumlu | Derya Baran
The study was designed to determine the consumers’ attitude and behaviors towards poultry meat consumption and to analyze the factors affecting on their meat consumption. The data obtained from 385 households consuming the poultry meat and residing in Erzurum province. As the data set based on Principal Component Analysis to determine the main factors affecting the consumption according to the poultry meat attributes and K-means Cluster Analysis to constitute the homogenous segments related to their consumption frequencies were used. According to the results of the study; the heavy users (C1) consuming the poultry meat consumption constituted the desirous and sensitive consumer segments based on both product image and price-sensitive contributing to the regional and rural development under the augmented product mix registered with the origin of the region. On the other hand, while the medium users (C2) focused on the concept forming their diets under the core benefit and the disease risk of the poultry meat by considering the sensorial and main quality attributes, light users (C3) also tried to maximize their total utility through products with generic brand. Therefore, it could introduce the augmented product mix under the product strategies with local brand with the origin of region for C1, the private brand strategies meting ISO 9001 and HACCP standards for C2, and the generic branded product with the origin of region in accordance with the product image for C3. In this way, it could be contributed to the rural regional developments, and thus could be increased the welfare levels of the people living in the rural areas by providing both the producer and consumer satisfactions.
Show more [+] Less [-]A Comparative Study of Some Estimation Methods in Simple Linear Regression Model for Different Sample Sizes in Presence of Outliers
2015
Soner Çankaya | Samet Hasan Abacı
The aim of this study was to compare some estimation methods (LS, M, S, LTS and MM) for estimating the parameters of simple linear regression model in the presence of outlier and different sample size (10, 20, 30, 50 and 100). To compare methods, the effect of chest girth on body weights of Karayaka lambs at weaning period was examined. Chest girth of lambs was used as independent variable and body weight at weaning period was used as dependent variable in the study. Also, it was taken consideration that there were 10-20% outliers of data set for different sample sizes. Mean square error (MSE) and coefficient of determination (R2) values were used as criteria to evaluate the estimator performance. Research findings showed that LTS estimator is the best models with minimum MSE and maximum R2 values for different size of sample in the presence of outliers. Thereby, LTS method can be proposed, to predict best-fitted model for relationship between chest girth and body weights of Karayaka lambs at weaning period, to the researches who are studying on small ruminants as an alternative way to estimate the regression parameters in the presence of outliers for different sample size.
Show more [+] Less [-]Mycoflora and Aflatoxin levels of Left-over Harvest in some Farms, South West of Nigeria
2015
Flora Oluwafemi | Aminat Omodolapo Badmos | Adelodun Lawrence Kolapo
More than ninety percent of the ruminant livestock in Nigeria lies in the hands of herders who keep them under extensive and semi-intensive management systems, whereby the animals rely only on natural pasture and crop residues for survival. In this work, the mycoflora and aflatoxin levels of ten farms were determined by sampling crop residues on farms grazed by cattle. Samples of the remains of farm harvest were surface-disinfected and cultured using standard microbiological techniques while aflatoxins in the left over harvest were determined using High Performance Liquid Chromatography (HPLC) with fluorescence detection. Fungal counts in leftover harvest ranged from 1.2 x 106 to 3.8 x106cfu/g. Aspergillus flavus, A. terreus, A.parasiticus, Rhizopus sp and a yeast, Candida sp were most prevalent on all the investigated crop residues. Aflatoxin B1 (AFB1) on the crop residues ranged between 3.0 and 13.30 μg/Kg, while the levels of AFG1 were between 2.30 and 4.50 μg/Kg. Results of the present study is indicative that the accumulation of these doses of AFB1 can lead to transfer of AFB1 into cattle and subsequently into milk. So there is an urgent need to control the feeding pattern of cattle in order to protect the health of the consuming public.
Show more [+] Less [-]Isolation of Alpha-amylase Producing Thermophilic Bacillus Strains and Partial Characterization of the Enzymes
2015
Celal Türker | Bahri Devrim Özcan
In the present study, we isolated three thermophilic Bacillus strains from the soil samples collected from the coast sediments of the Burnaz Stream located in Erzin. The isolates were entitled as Bacillus sp. CT1, CT2, and CT3, respectively. The maximum α-amylase production was revealed at 60°C for CT1 strain, and at 80°C for CT2 and CT3 strains, respectively. The optimum enzyme activity was observed at 90°C for CT1 α-amylase, whereas at 60°C for CT2 and CT3 α-amylases. On the other hand, optimum pH value for CT2 α-amylase was 7.0, whereas 8.0 for CT1 and CT3 α-amylases. The specific activities of CT1, CT2, and CT3 amylases were 317.6, 113.3 and 362.7 U/mg at 55°C, respectively. The estimated molecular weight of CT1 and CT3 α-amylase was 65 kDa, and for CT2 α-amylase was 38 kDa by zymogram analysis.
Show more [+] Less [-]L-Tryptophan, Melatonin, Serotonin Profiles in the Foods and their Effects on Health
2015
Seda Kurtulmuş | Tuğba Kök Taş
Nowadays, depending on the progress of science and technology, our eating habits have changed. The shape and quality of nutrition is important for human health. Especially, some food components have various effect on central nervous system such as depression, anxiety, sleep, appetite. Food constituents are transported into the central nervous system via the neutral amino acids such as phenylalanine, leucine, isoleucine, tyrosine and valine. Amino acids have an important role in human nutrition. It cannot be synthesized in the body and one of the essential amino acids that must be taken outside, trytophan, is indispensable in human nutrition because of it has the many functions. In recent years, scientific community concentrated on the various functions of L-Trytophan (L-Trp) as pioneer in the secretion of the hormones serotonin and melatoninin in the human body. The hormones serotonin and melatonin is responsible for activities such as psychology, sleep, body temperature, blood pressure balance, antioxidant effect, cancer inhibitor, sexuality, autism and circadian rhythms in human body that they are available in various foods such as milk, kefir, yogurt, orange, strawberry, grape, olive oil, walnut, prune, nut, pomegranate, coffee, kiwi and banana. In this study, L-Trp, serotonin and melatonin biosynthesis and metabolism, food profiles and in terms of their physiological and biological effects on human health has been compiled.
Show more [+] Less [-]The Effects of Different Treatments on Phytochemical and Volatiles Compositions of ‘Hicaznar’ pomegranate Fruit During Cold Storage
2015
Ayşe Tülin Öz | Ebru Kafkas | Mozhganx Zarifikhosroshahi | Tülin Şahin
‘Hicaznar’ pomegranate fruits were stored under both modified atmosphere packaging (MAP) and normal atmosphere without packaging at +7oC temperature and % 85-90 RH for 18 weeks. Weight loss, % CO2/O2 gas changes, arils color changes [L (lightness) and C (chroma)] values, total soluble solids (TSS) content, pH, titratable acidity (TA), total phenolic content (mg/100mL), total flavonoid content (mg/100mL), antioxidant activity (%), malic acid (%), changes of sugar (glucose, fructose, saccarose and sorbitol) content and volatile aroma compounds of ‘Hicaznar’ pomegranate fruits were determined during cold storage. Both average weight loss of pomegranate fruits and aril L (lighness) colour value changes were increased while aril C (Chroma) colour changes was decrease slightly at the end of storage. Total phenolic content in control arils samples were determined 109.5 mg/100 mL while it was 127.8 mg/100 mL in MAP aril samples; also total flavonoid content was decreased in 26.8 (control) and 27.1 (MAP) respectively at the end of storage compared to begining. The decrease of TSS was statistically significantly different between treatments. Moreover in this study volatile profile of ‘Hicaznar’ pomegranate fruit was desribed and 27 volatile compounds identified using automatic headspace solid-phase microextraction gas chromatography -mass spectrometry (HS-SPME GC/MS) tecniques. ‘Hicaznar’ pomegranate fruits have alcohols, aldehide, alkan, acids, esters, terpene and another volatile. Both effects of storage type and duration were evaluated. The results showed that terpenes increased for both MAP and control fruit samples while alcohols, aldehide and acids were decreased for both of storage type at the end of storage.
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