The dielectric properties of six refined edible oils with different fatty-acid compositions were determined for oils incubated at 180 °C up to 40 h. The oil degradation was evaluated by the dielectric dispersion and dielectric loss in the frequency range from 40 Hz to 2 MHz at 25 °C, refractive index, density, saponification number, and specific absorption coefficient at 232 and 268 nm. The dependence of the dielectric properties on frequency has been evaluated with Corach, Cole–Cole, and the universal power law models, giving the novel strategies for the interpretation of the dielectric spectra of thermally treated oils. The derived parameters—the dielectric constant, the electrical conductivity, the relaxation time τ and the exponents α, p, and n—are discussed with respect to the increased oxidation evidenced by specific absorption coefficients and polar products, as measured by the dielectric constant of the thermally treated oils. The specific refraction, specific polarization, orientation polarization, and dipole moment were determined using Lorenz–Lorentz, Debye and Onsager relationship. All above parameters obtained increased during the thermal treatment, except specific refraction, the electrical conductivity and the relaxation time. The dielectric constant-macroscopic parameter was compared with microscopic parameter polarization and dipole moment; the linear dependence was found to be $R^2=0.971$ .

The COVID-19 pandemic caused a large and involuntary shift to work from home (WFH) or teleworking, and widespread adoption of web-based platforms. This study aims to uncover the attitude and perception of WFH and online education among students and employees of the University of Ljubljana. A web-based questionnaire survey was conducted in November 2020, and more than 1300 valid responses were received. The lack of daily commuting, improved eating habits, and more time available for a family were the main reported advantages of WFH. The main issues, highlighted by respondents, were higher stress levels, lower study/work efficiency, and poorer working environment at home. When comparing the online educational process with the traditional one, the absence of traditional laboratory work, inadequate social interactions, and limitations of online knowledge assessment were identified as drawbacks by both students and educators. A significant difference between students and educators was observed in their opinion on the efficiency of online lectures compared to traditional ones, with the former being significantly more favored by students than educators. Overall, the majority of the respondents from all groups wish for the pre-COVID-19 study/work mode to be established as soon as possible. This implies that the perceived drawbacks of online education outweigh its advantages.

Plant-based substitutes for dairy products represent a rapidly developing market worldwide as they become increasingly popular with consumers. This study aimed to determine the nutritional and sensory quality of ten plant-based cheese substitutes labelled ‘classic’/‘original’ purchased on the Slovenian market. The quality was checked using chemical and sensory analysis. When the results of chemical analysis were compared with the nutritional composition of a semi-hard type of cheese, the plant-based cheese substitutes differed greatly. On average, they contained 60 times less protein, 8 times less calcium and 50% more salt per 100 g of product. Considering median values, plant-based substitutes had 200 times less protein, 40 times less calcium, and 58% more salt compared to cheeses. The fatty acid composition was less favourable when compared to a regular semi-hard type of cheese: 50% more saturated fatty acids, almost five times less monounsaturated fatty acids, and only one third of the polyunsaturated fatty acids per 100 g of product, respectively, but no trans fatty acids. Despite some sensory deficiencies (absence of eyes; crumbly, granular, and tough texture; discordant, fatty, and salty taste; foreign odour and pale colour), the sensory quality in this product category was acceptable overall. More research should be conducted in this area to minimise the knowledge gaps in the nutritional composition and sensory quality of plant-based cheese substitutes.

Background: Plant-based milk and dairy alternatives (PBMDAs) are increasingly consumed in Europe, yet evidence from Central Europe remains limited. This study investigated PBMDA consumption habits and perceptions among adults in Slovenia. Methods: A cross-sectional online survey was conducted in June 2024 using a nationally stratified consumer panel (N = 1500). The questionnaire assessed socio-demographics, lifestyle, selected self-reported psychological indicators, dietary pattern, PBMDAs-related beliefs, and interpretation of nutrition and ingredient information. Descriptive statistics and chi-square tests were complemented by multinomial logistic regression and Bayesian analyses. Results: Most participants followed an omnivorous diet, while vegetarians and vegans constituted a minority. Compared with omnivores, vegetarians expressed more favorable perceptions of PBMDAs (health, sustainability, safety), whereas omnivores expressed greater trust in dairy’s nutritional adequacy and stronger concerns about processing and additives. PBMDA perceptions varied by socio-demographics: younger participants and women expressed positive views, and vegetarian/vegan diets were more common among women and higher-educated consumers. Vegetarians/vegans reported more anxiety and body dysmorphic concerns than omnivores. When nutrition information was anonymised, both groups tended to rate dairy as healthier, indicating persistent biases in product evaluation. Conclusions: PBMDA perceptions in Slovenia are strongly segmented by dietary pattern and socio-demographics, supporting the need for clearer nutrition communication.

Emergency situations can cause sudden food shortages, which emphasize the need for preventive measures to ensure food security. The aim of this study was to determine the Slovenian population’s awareness of the official national recommendation for a 30-day emergency food supply, assess the adequacy of households’ food supplies, and identify factors influencing their quantity. An online survey was conducted among 815 Slovenian residents aged 18 to 89. The results showed that 81.0% were not aware of the national recommendations. Of the recommended foods, sugar, salt, cooking oil, jam, and pickled beet were most frequently stored, while rusks, water, canned meat sauces, bars, and dried yeast were least frequently stored. Only 17.0% of respondents had a sufficient supply of food to sustain their household members for a month or more, and only 19.1% had a supply of beverages for three days or more. Factors influencing the quantity of food supply included self-sufficiency assessment, knowledge of national recommendations, type of residence, region, household size, and number of children. This case study can serve more broadly as a basis for designing strategies to raise public awareness of the importance of emergency food supplies in improving food security during times of crisis.