Bijeli sirevi u salamuri kao potencijalni izvor bioaktivnih peptida

In addition to the nutritional value, cheese and other fermented milk-based products are a good source of biologically active proteins and peptides. Bioactive peptides in cheese are mainly formed during cheese production, especially during ripening, which is one of the most important stages in cheese production. Since the ripening process differ significantly depending on the cheese type, it can be assumed that their bioactivity is also substantially different. White brined cheeses are specific for the region of South-Eastern Europe. They are characterized by relatively intensive proteolysis and as such may be of interest as products with favorable functional characteristics. Yet, their functionality is still insufficiently characterized. This paper presents an overview of the current knowledge on white brined cheese’s bioactive peptides.Sirevi kao i drugi fermentirani proizvodi na bazi mlijeka, osim izražene nutritivne vrijednosti, predstavljaju i dobar izvor biološki aktivnih proteina i peptida. Bioaktivni peptidi sira najvećim dijelom nastaju prilikom proizvodnje sira, a posebno tijekom zrenja, kao jedne od najznačajnijih faza u procesu proizvodnje. Kako se proces zrenja različitih tipova sira bitno razlikuje, može se pretpostaviti da se i njihova bioaktivnost bitno razlikuje. Bijeli sirevi u salamuri specifični su za podneblje Jugoistočne Europe, a odlikuju se dosta intenzivnim procesima proteolize te mogu biti zanimljivi kao proizvodi s povoljnim funkcionalnim karakteristikama. U tom smislu ovaj tip sira još uvijek nije dovoljno okarakteriziran. Ovaj rad predstavlja pregled dosadašnjih saznanja o bioaktivnim peptidima bijelih sireva u salamuri

Factors Associated with Intention of Serbian Public Health Workers to Leave the Job: A Cross-Sectional, Population-Based Study

Recruitment and retention of public health workers (PHWs) is crucial for the optimal functioning of the public health system at a time of budget cuts and the threat of a pandemic. Individual and job-related variables were examined by univariate and multivariate logistic regression to identify predictors of the intention to leave a job during the COVID-19 outbreak among Serbian PHWs in 25 institutes of public health (n = 1663 respondents, of which 73.1% were female). A total of 20.3% of PHWs intended to leave their current job within the next five years. Males and persons aged younger than 55 years who had additional practice were more likely to report an intention to leave their job than females, those older than 54 years and those without additional work. While uncertainty and fear of infection during the COVID-19 pandemic were almost perceived as job attractiveness, other job-related characteristics were identified as significant barriers to maintaining the sufficient capacity of qualified PHWs in the future. Authorities need to address these factors, including the following: the feeling of tension, stress or pressure, and unavailability of information during the COVID-19 pandemic, as well as dissatisfaction with respect, valuation, and the job in general

Protein profiles and total antioxidant capacity of water soluble and insoluble protein fractions of white cow cheese at different stage of ripening

This research is focused on proteolysis and total antioxidant capacity of proteins of white brined cheese prepared from overheated (90 degrees C, 10 minutes) cow milk. White brined cow cheese of overheated milk went through specific proteolytic changes during ripening that were result of high level of whey proteins incorporated into the gel matrix. Specificity was reflected through the relatively low level of soluble nitrogen fractions, the intensive and continual decrease of alpha(s)-caseins up to 15.42 % of initial content, slow degradation of beta-casein throughout the whole ripening period and high level of proteolytic products tightly bounded into gel matrix. Strong negative correlations (-0.97, -0.98 and -0.91; p lt 0.05) between ripening time and resudual alpha(s)-caseins, beta-casein and low molecular weight products were observed. Proteolysis also affected the total antioxidant capacity of both water soluble and water insoluble nitrogen fractions, but to different extents and with different trends. Total antioxidant capacity of water insoluble fraction increased slowly during the whole ripening period, wherease significant improvement of total antioxidant capacity of water soluble fraction started after 30 days of ripening. These findings could be useful for better understanding and control of the white brined cow cheese production

Mineralogical Characterization of the Grot Lead and Zinc Mine Tailings from Aspects of Their Further Use as Raw Material

The possibility of using waste tailings produced by flotation in the lead and zinc mine of Grot, Serbia as a potential source of secondary mineral raw materials was examined. The aim of the research was primarily to carry out a detailed characterization in order to determine the dominant minerals, and, for the first time, to trace the changes occurring in the unit cells of the minerals present in that deposit. There was also a need to determine the exact proportions of the present mineral phases for their further application and utilization as natural resources in environmental protection. Samples were taken from three different sections of tailings: the crest of dam (JKB), outlet pipe of the flotation facility (JOF) and hydrocyclone overflow (JHC). Granulometric separation was performed to facilitate the extraction of certain minerals from waste. The results showed that all samples mainly contained quartz, clinochlore, calcite, albite, pyrite and biotite, but their ratios in each sample varied significantly. After characterization, samples were separated into different fractions and their mineralogical compositions were determined. Depending on the fraction, the mineralogical compositions also changed. Mineralogy and geochemical analysis indicate that waste tailings can be used as a secondary mineral raw materials source applicable in various industries

Words related to some annual egumes in Slavic and other indo-European languages

The Indo-European languages form the largest and the most widely distributed linguistic family in the world today. There is an extensive vocabulary common to all Slavic languages, including numerous words related to legumes. A large number of annual legumes were domesticated in the regions inhabited by Indo-European tribes, such as faba bean, pea, lentil, vetches and vetchlings. The Primitive Slavic *bob'', was derived from the Primitive Indo-European root *bhabha, denoting something swelling. There are Slavic languages with two words for lentil, with one of them derived from the Primitive Indo-European root *s(w)okw-, meaning juice, and another from the Primitive Indo-European root *lent- and *lent-s-. The Primitive Slavic *gorch'' has its root in the Primitive Indo-European *ghArs-, being one of the words denoting a leguminous plant. The Primitive Slavonic word for grain *zt''rno, has its origin in the Primitive Indo-European *ger[a]n- and *gran meaning both grain and to mature.

Raw clays in the production of ceramic and refractory tiles

Raw clay samples from Serbia, mainly of kaolinitic, illitic and mixed nature, were tested for their possible application in the production of ceramics. Using various triaxial diagrams, the samples were sorted according to their chemical and bulk mineralogical makeup, and also particle size distribution to determine whether they could be employed in the production of ceramics and refractories. The areas in the ternary graphs determined in earlier studies concerning the expected color after firing and the applicability of the raw clays are checked and extended. The samples' water absorption and flexural strength were assessed using EN standard procedures after they had been hydraulically semi-dry pressed and fired at several peak temperatures between 1100 and 1300 °C. A novel triaxial diagram considering the position of the samples based on firing temperature, water absorption and modulus of rupture is proposed, and the areas of different kinds of ceramic tiles are defined. It is discovered that the different raw clays can be utilized to create refractory, as well as wall and floor tiles. This study supports the rational use of natural sources of raw materials

THE INFLUENCE OF BODY COMPOSITION AND AGE ON THE BLOOD PRESSURE OF FEMALES OF DIFFERENT AGES

Genetic factors play an important role, but most important of all is their interaction with metabolical syndromes, specifically obesity. So far it has been confirmed in certain studies that blood pressure value is connected to age and obesity.  The aim of his study was to determine whether or not there is a relation between body composition and age that affects systolic and diastolic blood pressure. Material and methods: The data from the current research have been collected within the scientific research project titled “Anthropological status and physical activity of the population in Vojvodina”, which was realized by the Faculty of Sports and Physical Education in Novi Sad, financed by the Provincial Secretariat for Science and Technological Development. Based on 102 female participants, aged 20 to 49, from the city of Novi Sad, an assessment of blood pressure and body composition parameterswas conductedusing a digital camera OMRON M4-1 and bioelectric impedance Maltron 920. The relations between the studied variables were examined using Pierson’s correlation analysis and a regression analysis. Results: Based on the gathered multiple correlation coefficients (R) and other parameters (F tests and statistical significance P), it can be concluded that there in fact is a certain correlation between the prediction system of variables, body composition and the criteria, blood pressure assessment variables. By analyzing the coefficients of regression, individual influences of the variables of the prediction system on the criteria variables were noted. Conclusion: The results of this study suggest that an obvious influence of body composition onsystolic and diastolic pressure exists. This study also suggests that the percentage of fat in the body is a better indicator of blood pressure than age.

Consumer willingness to pay for a pharmaceutical disposal program in Serbia: A double hurdle modeling approach

Proper collection and disposal of pharmaceutical waste from households can reduce the negative influence of medicines on the environment. The aim of this paper is to examine the current methods of disposal of unused medicines from households, as well as the willingness of Serbian residents to participate and bear the costs of an organized collection program. Moreover, this research aims to define factors contributing to an individual’s willingness to participate and pay for a medicine collection program. The survey included randomly selected patients older than 18 years visiting private pharmacies in the four largest Serbian cities. The questionnaire included information regarding the presence of unwanted medicines within the household, general medicine disposal practices, the likelihood to participate in a medicine take-back program, willingness to pay for a medicine disposal program (per prescription and per visit), impor-tance to the environment, and demographic variables from participants. Approximately 80% of surveyed respondents are very or somewhat likely to participate, however less than half of the respondents are will-ing to pay for the collection of their unused medicines. The factors that influenced willingness to partic-ipate are environmental awareness and income, while the factors affecting willingness to pay, are previously received advice about proper disposal, education level, number of unwanted medicines in the household and gender. The majority of Serbian people dispose unused medicines improperly, mostly into household garbage. Well-organized and easily accessible collection programs are essential in order to enable the general public to return unused medicines for proper disposal

Preparation of silver and copper nanoparticles in presence of ascorbic acid and investigation of their antibacterial activity

In this study, we present a synthesis of silver and copper nanoparticles (NPs) using ascorbic acid as stabilizing and sodium borohydride as reducing agents, respectively. Four colloidal dispersions were obtained, two of them additionally stabilized by gelatin. They were characterized by UV-Vis, AFM, DLS and zeta potential measurements. The size of both silver and copper NPs, determined by AFM measurements, was 10 nm before, and 15 nm after stabilization with gelatin. Antibacterial activity of synthesized NPs was tested using series of gram positive and gram negative bacteria. It was found that Ag and Cu NPs showed antibacterial activity in all case s

Examination and characterization of nanostructured Co0.9Ho0.1MoO4

The nanostructured powderwas synthesized by the glycine nitrate procedure (GNP) because it proved to be the most effective and simplest method suitable for controlling the composition and morphology of Co0.9Ho0.1MoO4. To prepare nanostructured Co0.9Ho0.1MoO4, metal nitrates, and glycine were mixed in appropriate stoichiometric ratios. For the preparation of the technologically important Co0.9Ho0.1MoO4, the combustion process has proven to be a promising method that achieves control of stoichiometry, homogeneity, and purity. The synthesized samples were examined by DTA, X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, Spectroscopy, Field emission scanning electron microscopy (FESEM), and nitrogen adsorption method. The acquired nanopowder showed a tendency for agglomeration, inhomogeneous microstructure, and plate-like crystals. The photocatalytic activity of the obtained Co0.9Ho0.1MoO4nanopowders was evaluated by the photocatalytic degradation of crystal violet in an aqueous solution. After photocatalytic testing and all the above-mentioned characterizations, it was shown that these nanostructured materials represent promising solutions in photocatalytic processes toward green chemistry and sustainable development.Advanced Ceramics and Application XI : New Frontiers in Multifunctional Material Science and Processing : Program and the Book of Abstracts ; September 18-20, 2023; Belgrad