Poposka - trenevska, Vasilka
Preferred name
Poposka - trenevska, Vasilka
Official Name
Poposka - trenevska, Vasilka
Main Affiliation
Email
vtrenevska@fvm.ukim.edu.mk
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Item type:Publication, RADIOACTIVITY LEVELS IN SOME MUSHROOM SPECIES COLLECTED FROM MACEDONIA AND CONSEQUENT DOSES(University of East Sarajevo, Faculty of Agriculture, 2022); ; Stojanovska-Dimzoska, BiljanaMushrooms are bioindicators in the environment that accumulate radionuclides, therefore they can pose a radiological threat. In the Republic of Macedonia, mushrooms are widely consumed as a part of the diet, for this reason their radiological control is required. In this research, the activity concentrations in different types of mushrooms (Boletus edulis, Marasmius oreades, Morchela conica, Lactarius deliciosus) were determined. The mushrooms were collected from six different locations in the Republic of Macedonia, and information on the radiation dose for the general population were obtained with this measurement. The analyses were performed by means of HPGe gamma spectrometry, i.e. an instrument - gamma spectrometer (Canbera Packard) with a high purity germanium detector. The obtained spectra from the measurement were analyzed by using the GENIE 2000 program. On the basis of the performed tests, the mean values for the activity concentrations in the mushrooms were as follows 41.9±1.2 Bq kg − 1 for 226Ra, 40.3±1.8 Bq kg − 1 for 232Th, 83.75±6.2 Bq kg − 1 for 40K, and 2.34±0.24 Bq kg − 1 for 137Сs. The mean value of the radiation risk index Heks is lower than the maximum allowed value which is <1 for Heks. The value of the radium equivalent activity Raeq is below the maximum recommended limit, i.e. 370 Bq kg-1. Significant variations were not observed in regard to the activity concentrations of 137Cs and 40K in the same mushroom species from different sampling points. High activity concentrations of 137Cs activity were not detected in any of the mushrooms. The researches in this study show that all mushroom samples pose no biological threat, i.e. it was found that the analyzed radionuclides do not pose a health risk and the levels are below the international standards. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, DETERMINATION OF MILK FAT ADULTERATION IN SOUR CREAM WITH VEGETABLE OILS BY GC-FID METHOD(JHED, 2021); ; ; Arapcheska, MilaFood adulteration appears in all areas of the food industry, most often to reduce production costs and to earn extra money. In the dairy industry, the adulteration of milk fat with vegetable oils is an act of intentionally reducing their qualities. Мilk fat in milk and dairy products can be partially or completely substituted with vegetable oils. The most often adulterants of vegetable oils are palm oil and coconut oil. The aim of this study is determination of vegetable oils in sour cream by GC-FID method. A total of fifty-five samples from the local market were analyzed in this study. Thirty-six samples were sour cream and nineteen samples were sour cream with peppers. Sample preparation was according to modified AOAC Official Method 996.06, 2005. The determination of fatty acids was carried out on a gas chromatograph with flame ionization detector (GCFID). Butter milk fat, palm oil and coconut oil were used as reference standards. GC-FID analysis of fatty acids composition of sour cream in combination with multivariate statistical data processing, which included reference standards of fatty acids composition of milk fat, palm oil and coconut oil, were used for determination of vegetable fat. The vegetable fats were detected in four samples (7.27%). In two samples were detected palm oil, in one sample was detected coconut oil, while in one sample was detected palm and coconut oil. Also, from the all positive samples of vegetable oils, in three samples the milk fat was partially substituted, while in one sample the milk fat was completely substituted. This study provides a basic data for milk fat adulteration in sour cream with vegetable oils. The frequent monitoring of milk and dairy products, for the detection of vegetable fats, can prevent adulteration and protect the consumers from fraud. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, NATURAL RADIOACTIVITY LEVELS IN SOME VEGETABLES COMMONLY USED IN THE CITY OF SKOPJE (MACEDONIA)(International Scientific Publications, 2021); ; ;