The aim of this study was to determine the prevalence of usage and the knowledge and attitudes towards dietary supplements among medical sciences and nonmedical sciences students from Croatia. The ...study was conducted based on a questionnaire about dietary supplement usage, knowledge and attitudes. The prevalence of dietary supplement use, among 910 university students was 30.5%. The most-used dietary supplements were vitamins (18.0% in medical sciences students and 9.8% in non-medical sciences students). For all students, the internet (66.1%) was the most common source of information, followed by healthcare professionals (33.2%). The most common reason for taking dietary supplements was to maintain good health (26.4%). Use of the internet rather than health professionals as a trusted information source should be revised among this young population. Supplement intake was significantly associated with body mass index (BMI) (
= 0.016) and physical activity (
= 0.050). Students with normal BMI (61.5%) and the most physically active students (37.7%) took significantly more dietary supplements. Results of this study could help medicine faculties to improve their curriculum and support the development of public health messages aimed at wise and safe use of dietary supplements.
Pesticides are chemicals used in agriculture to protect crops from pests. In addition to protection during cultivation, they are also used after harvesting to extend the shelf life of products. ...Postharvest control stands out, especially when it comes to products imported from distant countries, resulting in increased concentration of pesticides and risk to human health consuming such products. In this study, analyses of pesticide residues were performed on 200 samples of fruits and vegetables. Pesticide residues were identified and quantified in 30 out of 200 samples. Study results revealed imazalil to be the most frequently detected pesticide. Risk assessment was performed on the obtained results, and it was carried out separately for adults and for children under 6 years of age. Imazalil showed the highest ARfD percentage for adults (max% ARfD 251%), and these values were especially high on risk assessment for children, where they amounted up to max% ARfD 1087%. The study of imazalil impact was performed on 16 Swiss albino mice divided into two groups and 4 subgroups. Experimental group animals were treated with the corresponding NOAEL dose of imazalil (10 mg/kg) for 28 days. Body weight was measured before each pesticide application on a digital electronic Sartorius scale. Peripheral blood analysis was performed after 28-day animal exposure to pesticides. Animals were anesthetized, blood samples were obtained by cardiac puncture, and red blood cell (RBC) count, hemoglobin (Hb) concentration, and white blood cell (WBC) count were determined by standard hematological methods. The organs for determination of imazalil concentration were extracted immediately upon animal sacrifice and stored in a freezer at -80°C until analysis. Results show difference in gain weight, and an increase in WBC count was recorded in the experimental group as compared with a control group of animals. The highest imazalil levels were recorded in adipose tissue (45.2‰) which proves tendency to accumulate.
Nepravilna i nesukladna uporaba pesticida najčešći je uzrok prisutnosti njihovih ostataka većih od dopuštenih. Ako se u/na tretiranim kulturama nađu ostatci veći od dopuštenih, potrebno je poduzeti ...niz mjera. Procjena rizika složen je proces baziran na znanstveno utemeljenim činjenicama i novim spoznajama i informacijama. Kako bi se utvrdilo postoji li akutni rizik za zdravlje potrošača konzumacijom proizvoda s utvrđenim ostatcima pesticida iznad MRO-a, potrebna je utvrđena vrijednost koncentracije pesticida, modeli prehrane koji uključuju podatke o konzumaciji određene vrste hrane, prehrambene navike određene populacijske skupine i toksikološki parametri (akutna referentna doza ‒ ARfD). Kao jedan od glavnih alata u procesu zaštite potrošača i stavljanja na tržište zdravstveno ispravne hrane na području EU-a uspostavljen je RASFF (engl. Rapid Alert System for Food and Feed) sustav u skladu s člankom 50. Uredbe (EZ) br. 178/2002 (Službeni list Europske unije, 2002.), a mjere za provedbu RASFF sustava propisane su Provedbenom uredbom Komisije (EU) 2019/1715. (Službeni list Europske unije, 2019.)
Nitriti i nitrati se koriste u proizvodnji mesnih prerađevina i imaju važnu ulogu ne samo kao konzervansi već i u formiranju karakteristične
crvene boje i specifičnog okusa proizvoda od mesa te ...inhibiraju rast i razvoj patogene bakterije Clostridium botulinum. Nitrozamini
su kancerogeni i toksični spojevi koji mogu nastati u mesu i mesnim proizvodima kao produkt reakcije nitrita s proteinima
mesa nakon što se mesu ili mesnim proizvodima dodaju nitriti, odnosno nitrati kao konzervansi. Štetnost nitrozamina dokazana je u
mnogim objavljenim znanstvenim radovima tijekom zadnjih 30.-ak godina te je stoga potrebna stalna sustavna kontrola na prisutnost
N-nitrozamina, jer meso i mesni proizvodi kao glavni izvor proteina čine veliki udio u prehrani kako odrasle populacije tako i djece.
U Republici Hrvatskoj se takva kontrola ne provodi, a isto tako u dosadašnjoj legislativi nisu propisane najviše dopuštene količine
za te spojeve (NDK). Identifikacija i kvantifikacija natri-nitrita i natrij-nitrata rađena je kromatografskom tehnikom visokoučinkovite
tekućinske kromatografije (engl. High Performance Liquid Chromatography-HPLC) s DAD detektorom serija 1200 (Agilent), dok su Nnitrozamini
određeni praćenjem karakterističnih iona u vezanom sustavu plinske kromatografije i spektrometrije masa (GC-MS-SIM).
Dobiveni rezultati kretali su se u rasponu od 0.0001 mg/kg - 0.0099 mg/kg.
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