Anka Ćurić, Katarina Muzica, Ivana Runjak, Daniela Vasiljević, Martina Miloloža, Dajana Kučić Grgić
,
，
{"title":"Koja je cijena pušenja? – Opasnosti za okoliš","authors":"Anka Ćurić, Katarina Muzica, Ivana Runjak, Daniela Vasiljević, Martina Miloloža, Dajana Kučić Grgić","doi":"10.15255/kui.2022.041","DOIUrl":"https://doi.org/10.15255/kui.2022.041","url":null,"abstract":",","PeriodicalId":43849,"journal":{"name":"Kemija u Industriji-Journal of Chemists and Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48622253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Živko Skračić, I. Ljubenkov, N. Mimica, Ivana Generalić Mekinić
processing are pomace, seeds, stems, wine lees, and vine shoot and leaves, which are still a valuable source of different biologically active com - pounds that can be used in food, pharmaceutical and cosmetic industry, as well as in agriculture, energy, and feed production. Therefore, the main goal of this paper was to point out the benefits of winemaking by-products, and provide an overview of their composition and properties, as well as gain insight into recent research on their application in various industries. The rational manage - ment of vinification by-products has multiple benefits; production of functional foods and natural agents that generally contributes to the quality of nutrition and life, and at the same time reduces the impact on the environment. All of these give a strong impulse to the idea of sustainability and circular economy, what becomes an imperative in the complex conditions of global economic life.
{"title":"Valorizacija nusproizvoda proizvodnje vina","authors":"Živko Skračić, I. Ljubenkov, N. Mimica, Ivana Generalić Mekinić","doi":"10.15255/kui.2022.051","DOIUrl":"https://doi.org/10.15255/kui.2022.051","url":null,"abstract":"processing are pomace, seeds, stems, wine lees, and vine shoot and leaves, which are still a valuable source of different biologically active com - pounds that can be used in food, pharmaceutical and cosmetic industry, as well as in agriculture, energy, and feed production. Therefore, the main goal of this paper was to point out the benefits of winemaking by-products, and provide an overview of their composition and properties, as well as gain insight into recent research on their application in various industries. The rational manage - ment of vinification by-products has multiple benefits; production of functional foods and natural agents that generally contributes to the quality of nutrition and life, and at the same time reduces the impact on the environment. All of these give a strong impulse to the idea of sustainability and circular economy, what becomes an imperative in the complex conditions of global economic life.","PeriodicalId":43849,"journal":{"name":"Kemija u Industriji-Journal of Chemists and Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44619074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Riadh Moumen, M. Laidi, S. Hanini, Mohamed Hentabli, A. Ibrir
The predictability of the adsorption capacity of the multicomponent adsorption system was modelled using Support Vector Machine (SVM). Two SVM models were built and compared. In the first model, the SVM method was used with an already built-in optimisation algorithm. However, in the second model, the SVM method was used by means of a very recent and efficient optimisation algorithm: the Dragonfly Algorithm (DA). The models’ accuracy was evaluated by three well-established statistical metrics (root mean squared error RMSE, determina- tion coefficient R 2 , and correlation coefficient R ). The used data were collected from previous experimental papers published in literature containing all kinds of pollutants, such as heavy metal ions, dyes, and organic compounds, and different natural/ synthetic adsorbents. The dataset contained five important variables with 1023 points; the variables were divided into four in - puts (molecular weight, equilibrium concentrations of adsorbate, specific area of adsorbent, and temperature), and one output (adsorption capacity at equilibrium). The data were divided using the holdout function into two subsets (80 % for training set, and 20 % for test set). The programming stage was carried out using MATLAB software. The results showed that the optimised DA-SVM model with RBF-Gaussian kernel function had good ability for global search combined with high prediction accuracy, with R 2 = 0.997, R = 0.998, and RMSE = 2.539. The obtained model can be used to predict the efficiency of the adsorption system, and provides a tool for process optimisa - tion responding to changes in operating conditions. A new graphical user interface (GUI) was developed with MATLAB GUI to estimate accurately the desired responses by using the best DA-SVM model.
利用支持向量机(SVM)对多组分吸附体系的可预测性进行建模。建立了两种支持向量机模型并进行了比较。在第一个模型中，支持向量机方法与已经内置的优化算法一起使用。然而，在第二个模型中，支持向量机方法是通过一种非常最新和有效的优化算法来使用的:蜻蜓算法(DA)。模型的准确性通过三个完善的统计指标(均方根误差RMSE、决定系数r2和相关系数R)来评估。所使用的数据收集自以往发表在文献中的实验论文，其中含有各种污染物，如重金属离子、染料、有机化合物以及不同的天然/合成吸附剂。数据集包含5个重要变量，共1023个点;这些变量分为四个输入(分子量、吸附质平衡浓度、吸附剂比面积和温度)和一个输出(平衡吸附容量)。使用保留函数将数据分为两个子集(80%用于训练集，20%用于测试集)。编程阶段采用MATLAB软件进行。结果表明，优化后的rbf -高斯核函数DA-SVM模型具有较好的全局搜索能力和较高的预测精度，其r2 = 0.997, R = 0.998, RMSE = 2.539。所得模型可用于预测吸附系统的效率，并为根据操作条件的变化进行工艺优化提供了工具。利用MATLAB图形用户界面开发了一种新的图形用户界面(GUI)，利用最佳DA-SVM模型准确估计期望响应。
{"title":"Multicomponent Adsorption Capacity Forecasting Based on Support Vector Machine with Dragonfly Algorithm","authors":"Riadh Moumen, M. Laidi, S. Hanini, Mohamed Hentabli, A. Ibrir","doi":"10.15255/kui.2022.048","DOIUrl":"https://doi.org/10.15255/kui.2022.048","url":null,"abstract":"The predictability of the adsorption capacity of the multicomponent adsorption system was modelled using Support Vector Machine (SVM). Two SVM models were built and compared. In the first model, the SVM method was used with an already built-in optimisation algorithm. However, in the second model, the SVM method was used by means of a very recent and efficient optimisation algorithm: the Dragonfly Algorithm (DA). The models’ accuracy was evaluated by three well-established statistical metrics (root mean squared error RMSE, determina- tion coefficient R 2 , and correlation coefficient R ). The used data were collected from previous experimental papers published in literature containing all kinds of pollutants, such as heavy metal ions, dyes, and organic compounds, and different natural/ synthetic adsorbents. The dataset contained five important variables with 1023 points; the variables were divided into four in - puts (molecular weight, equilibrium concentrations of adsorbate, specific area of adsorbent, and temperature), and one output (adsorption capacity at equilibrium). The data were divided using the holdout function into two subsets (80 % for training set, and 20 % for test set). The programming stage was carried out using MATLAB software. The results showed that the optimised DA-SVM model with RBF-Gaussian kernel function had good ability for global search combined with high prediction accuracy, with R 2 = 0.997, R = 0.998, and RMSE = 2.539. The obtained model can be used to predict the efficiency of the adsorption system, and provides a tool for process optimisa - tion responding to changes in operating conditions. A new graphical user interface (GUI) was developed with MATLAB GUI to estimate accurately the desired responses by using the best DA-SVM model.","PeriodicalId":43849,"journal":{"name":"Kemija u Industriji-Journal of Chemists and Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44133471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abla Bousselma, Hichem Tahraoui, D. Abdessemed, A. Amrane, M. Kebir, N. Moula, Mouni Saadoudi, Asma Temagoult
The objective of this study was to evaluate the antioxidant (AA), antibacterial, and antifungal activity of fresh and pre-treated apricot extracts, dried by microwave at different powers (200, 400, and 800 W), extracted by the cold soaking method, and ultrasound-assisted extraction (UAE). Biological activity (bacterial and fungal) was estimated by agar disk diffusion test against four bacterial strains ( Escherichia coli , Pseudomonas aeruginosa , Staphylococcus aureus and Streptococcus sp.), and two fungal strains ( Candida spp. and Geotrichum capitatum ). Methanolic extracts of apricot fruits: fresh, dried processed
{"title":"Antioxidant and Biological Activities of Fresh and Dried Apricot Extracts Obtained by Cold Soaking and Ultrasonic Extraction","authors":"Abla Bousselma, Hichem Tahraoui, D. Abdessemed, A. Amrane, M. Kebir, N. Moula, Mouni Saadoudi, Asma Temagoult","doi":"10.15255/kui.2022.054","DOIUrl":"https://doi.org/10.15255/kui.2022.054","url":null,"abstract":"The objective of this study was to evaluate the antioxidant (AA), antibacterial, and antifungal activity of fresh and pre-treated apricot extracts, dried by microwave at different powers (200, 400, and 800 W), extracted by the cold soaking method, and ultrasound-assisted extraction (UAE). Biological activity (bacterial and fungal) was estimated by agar disk diffusion test against four bacterial strains ( Escherichia coli , Pseudomonas aeruginosa , Staphylococcus aureus and Streptococcus sp.), and two fungal strains ( Candida spp. and Geotrichum capitatum ). Methanolic extracts of apricot fruits: fresh, dried processed","PeriodicalId":43849,"journal":{"name":"Kemija u Industriji-Journal of Chemists and Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47916918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dajana Balaić, Gabriela Antonije Oreški, Gabrijela Radić, H. Kušić, Klara Perović, M. Kraljić Roković
Photoelectrochemical hydrogen production combines electrochemistry and photocatalysis, resulting in sustainable hydrogen production. The process can be improved by the addition of hole scavengers, which reduce the recombination of electrons and holes, increasing the utilisation of solar radiation. Because of its low oxidation potential, ascorbic acid (AA) is an environmentally friendly and readily available hole scavenger. The commonly studied photocatalyst TiO 2 makes little utilisation of solar radiation energy due to its high energy gap of 3.2 eV. The metal sulphide SnS 2 attracts attention due to its low energy band gap of 2.2 eV, which allows the use of the visible region of the spectrum. In this work, the electrochemical characterisation of SnS 2 and TiO 2 photoanodes in NaCl solution in the presence and absence of AA was performed. The effect of AA on the photore-sponse was investigated using the linear polarisation method and monitoring the open circuit potential. The results confirmed that SnS 2 and TiO 2 electrodes are photoactive, and that AA has good hole scavenging properties. Hydrogen production was performed at constant potentials of 0.6 and 1.35 V, respectively. TiO 2 exhibited higher photoactivity, thus producing more hydrogen at 0.6 V. On the other hand, at a potential of 1.35 V, most of the hydrogen produced was the result of an electro-chemical reaction rather than a photoelectrochemical reaction, thus, a larger amount of hydrogen was produced with the SnS 2 electrode. The highest amount of hydrogen produced in this work was at 1.35 V for the SnS 2 electrode in an argon atmosphere and it was 0.799 ml h −1 cm −2 .
光电化学制氢结合了电化学和光催化，实现了可持续的制氢。这一过程可以通过添加空穴清除剂来改善，这种清除剂可以减少电子和空穴的复合，增加太阳辐射的利用率。抗坏血酸（AA）由于其低氧化电位，是一种环境友好且易于获得的空穴清除剂。通常研究的光催化剂TiO2由于其3.2eV的高能隙而很少利用太阳辐射能。金属硫化物SnS2由于其2.2eV的低能带隙而引起关注，这允许使用光谱的可见区域。在本工作中，在AA存在和不存在的情况下，对SnS2和TiO2光阳极在NaCl溶液中的电化学特性进行了研究。采用线性极化法和开路电位监测法研究了AA对光响应的影响。结果表明，SnS2和TiO2电极具有光活性，AA具有良好的空穴清除性能。氢气生产分别在0.6和1.35V的恒定电势下进行。TiO2表现出更高的光活性，因此在0.6V下产生更多的氢。另一方面，在1.35V的电势下，产生的大部分氢是电化学反应而不是光电化学反应的结果，因此，用SnS2电极产生了更大量的氢。在这项工作中，SnS2电极在氩气气氛中产生的最高氢气量为1.35 V，为0.799 ml h−1 cm−2。
{"title":"Photoelectrocatalytic Hydrogen Production Supported by Ascorbic Acid","authors":"Dajana Balaić, Gabriela Antonije Oreški, Gabrijela Radić, H. Kušić, Klara Perović, M. Kraljić Roković","doi":"10.15255/kui.2022.050","DOIUrl":"https://doi.org/10.15255/kui.2022.050","url":null,"abstract":"Photoelectrochemical hydrogen production combines electrochemistry and photocatalysis, resulting in sustainable hydrogen production. The process can be improved by the addition of hole scavengers, which reduce the recombination of electrons and holes, increasing the utilisation of solar radiation. Because of its low oxidation potential, ascorbic acid (AA) is an environmentally friendly and readily available hole scavenger. The commonly studied photocatalyst TiO 2 makes little utilisation of solar radiation energy due to its high energy gap of 3.2 eV. The metal sulphide SnS 2 attracts attention due to its low energy band gap of 2.2 eV, which allows the use of the visible region of the spectrum. In this work, the electrochemical characterisation of SnS 2 and TiO 2 photoanodes in NaCl solution in the presence and absence of AA was performed. The effect of AA on the photore-sponse was investigated using the linear polarisation method and monitoring the open circuit potential. The results confirmed that SnS 2 and TiO 2 electrodes are photoactive, and that AA has good hole scavenging properties. Hydrogen production was performed at constant potentials of 0.6 and 1.35 V, respectively. TiO 2 exhibited higher photoactivity, thus producing more hydrogen at 0.6 V. On the other hand, at a potential of 1.35 V, most of the hydrogen produced was the result of an electro-chemical reaction rather than a photoelectrochemical reaction, thus, a larger amount of hydrogen was produced with the SnS 2 electrode. The highest amount of hydrogen produced in this work was at 1.35 V for the SnS 2 electrode in an argon atmosphere and it was 0.799 ml h −1 cm −2 .","PeriodicalId":43849,"journal":{"name":"Kemija u Industriji-Journal of Chemists and Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45307537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abla Bousselma, D. Abdessemed, Hichem Tahraoui, Fouad Zedame, A. Amrane
This study was carried out to verify the influence of drying parameters on phenolic and flavonoid compounds of apricots ( Prunus armeniaca L . ) treated with sucrose, NaCl, and sodium bisulphite solutions dried by microwave at different powers (200, 400, and 800 W). We used two extraction methods, namely, cold soaking and ultrasound-assisted extraction (UAE). Total phenolics and flavonoids in fresh and dried apricots and apricot dough were estimated using the Folin-Ciocalteu reagent and the aluminium trichloride method, respectively. Fresh apricot contained considerable amounts of polyphenols and flavonoids by the cold soaking and UAE (285.43 and 165.49 mg GAE/100 g DM and 48.57 and 12.11 mg QE/100 g DM, respectively). Analysis of the data showed that the decrease in polyphenol and flavonoid contents of the dried treated apricots compared to the fresh material was significant. The greatest losses of these nutrients were recorded when applying the ultrasonic extraction method.
本研究旨在验证干燥参数对杏(Prunus armeniaca L .)中酚类和黄酮类化合物的影响。分别用蔗糖、NaCl和亚硫酸氢钠溶液处理，在不同功率(200、400和800 W)下微波干燥。我们采用冷浸泡和超声辅助提取(UAE)两种提取方法。用Folin-Ciocalteu试剂和三氯化铝法分别测定了鲜杏、干杏和杏面团中的总酚类物质和总黄酮。经冷浸和UAE处理的鲜杏含有大量的多酚和黄酮类化合物(分别为285.43和165.49 mg GAE/100 g DM, 48.57和12.11 mg QE/100 g DM)。数据分析表明，处理后的杏干中多酚和类黄酮含量较鲜杏显著降低。超声波提取法对这些营养物质的损失最大。
{"title":"Polyphenols and Flavonoids Contents of Fresh and Dried Apricots Extracted by Cold Soaking and Ultrasound-assisted Extraction","authors":"Abla Bousselma, D. Abdessemed, Hichem Tahraoui, Fouad Zedame, A. Amrane","doi":"10.15255/kui.2022.045","DOIUrl":"https://doi.org/10.15255/kui.2022.045","url":null,"abstract":"This study was carried out to verify the influence of drying parameters on phenolic and flavonoid compounds of apricots ( Prunus armeniaca L . ) treated with sucrose, NaCl, and sodium bisulphite solutions dried by microwave at different powers (200, 400, and 800 W). We used two extraction methods, namely, cold soaking and ultrasound-assisted extraction (UAE). Total phenolics and flavonoids in fresh and dried apricots and apricot dough were estimated using the Folin-Ciocalteu reagent and the aluminium trichloride method, respectively. Fresh apricot contained considerable amounts of polyphenols and flavonoids by the cold soaking and UAE (285.43 and 165.49 mg GAE/100 g DM and 48.57 and 12.11 mg QE/100 g DM, respectively). Analysis of the data showed that the decrease in polyphenol and flavonoid contents of the dried treated apricots compared to the fresh material was significant. The greatest losses of these nutrients were recorded when applying the ultrasonic extraction method.","PeriodicalId":43849,"journal":{"name":"Kemija u Industriji-Journal of Chemists and Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44026278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ema Čemerika, Dora Milički, M. Miloloža, Dajana Kučić Grgić, Krunoslav Žižek, Vesna Ocelić Bulatović
The continuous growth of the coffee market generates enormous amounts of spent coffee grounds (SCG), which account for up to 95 % of waste after coffee consumption. SCG contain a wealth of different resources that just need to be converted into another usable form. On the other hand, to - day’s excessive production of plastic waste in almost all industries worldwide is causing significant environmental pollution, leading to increased use of biodegradable polymers and biocomposites. Precisely because of the enormous amounts of SCG and the slow biodegradability of polylac - tide (PLA), this study aimed to investigate the properties and biodegradability of biocomposites made from green PLA and SCG, which were prepared by mixing the PLA matrix with different proportions of SCG. The thermal properties of the biocomposite were investigated by differential scanning calorimetry and thermogravimetric analysis. The particle size distribution of the SCG was studied by laser diffraction method, as well as the water absorption. The biodegradation of the biocomposite was carried out by a composting process of 19 days. The results of the thermal properties test showed that the SCG as filler did not affect the phase transitions of the PLA matrix, but it did affect the reduction of the thermal stability of the PLA_SCG biocomposite. The results of the water absorption test showed that increasing the amount of SCG leads to an increase in water absorption in biocomposites, due to the hydrophilic nature of the filler. On the light micro - scopic images, the surface attack of microorganisms was visible in biocomposites with lower SCG content, while deeper penetration was observed in biocomposites with higher SCG filler content.
{"title":"Zeleni biokompoziti na bazi otpada taloga kave","authors":"Ema Čemerika, Dora Milički, M. Miloloža, Dajana Kučić Grgić, Krunoslav Žižek, Vesna Ocelić Bulatović","doi":"10.15255/kui.2022.079","DOIUrl":"https://doi.org/10.15255/kui.2022.079","url":null,"abstract":"The continuous growth of the coffee market generates enormous amounts of spent coffee grounds (SCG), which account for up to 95 % of waste after coffee consumption. SCG contain a wealth of different resources that just need to be converted into another usable form. On the other hand, to - day’s excessive production of plastic waste in almost all industries worldwide is causing significant environmental pollution, leading to increased use of biodegradable polymers and biocomposites. Precisely because of the enormous amounts of SCG and the slow biodegradability of polylac - tide (PLA), this study aimed to investigate the properties and biodegradability of biocomposites made from green PLA and SCG, which were prepared by mixing the PLA matrix with different proportions of SCG. The thermal properties of the biocomposite were investigated by differential scanning calorimetry and thermogravimetric analysis. The particle size distribution of the SCG was studied by laser diffraction method, as well as the water absorption. The biodegradation of the biocomposite was carried out by a composting process of 19 days. The results of the thermal properties test showed that the SCG as filler did not affect the phase transitions of the PLA matrix, but it did affect the reduction of the thermal stability of the PLA_SCG biocomposite. The results of the water absorption test showed that increasing the amount of SCG leads to an increase in water absorption in biocomposites, due to the hydrophilic nature of the filler. On the light micro - scopic images, the surface attack of microorganisms was visible in biocomposites with lower SCG content, while deeper penetration was observed in biocomposites with higher SCG filler content.","PeriodicalId":43849,"journal":{"name":"Kemija u Industriji-Journal of Chemists and Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46351530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ivan Blažević, Krešimir Kos, M. Kovačević, Tibor Marković, Lucia Sović, Martina Miloloža
Increased awareness of the negative effects of sun radiation exposure has resulted in the increased production and use of sunscreens. This in turn has resulted in the accumulation of UV filters, sunscreen active ingredients, in the aquatic environment. Studies have shown that UV filters, espe - cially those organic, such as oxybenzone, octinoxate, and 4-MBC, pose a danger to a wide range of organisms. Research findings discussed in this paper refer to the toxic effect of the stated chem - icals on marine and freshwater organisms, and they indicate that the presence of these chemicals in the aquatic environment has resulted in inhibition of growth and photosynthesis, reproductive and developmental disorders, organism bleaching, and even death of test organisms. Inorganic UV filters, which are mostly nanoparticle forms of TiO 2 and ZnO, show lower toxicity or have hardly any effect on test organisms in the conducted ecotoxicological tests. However, in studies in which they have shown low toxicity, this toxicity is not only caused by the presence of nanoparticles, but also by the formation of reactive oxygen species, which in some organisms has caused growth inhibition, bleaching, abnormal embryogenesis, and oxidative stress. Further research is necessary to understand better the toxic effects of these compounds, and to assess more accurately the risks they pose to the aquatic environment as well as the entire ecosystem.
{"title":"SPF – super problematična formula? Aktivni sastojci krema za sunčanje u vodenom okolišu","authors":"Ivan Blažević, Krešimir Kos, M. Kovačević, Tibor Marković, Lucia Sović, Martina Miloloža","doi":"10.15255/kui.2022.053","DOIUrl":"https://doi.org/10.15255/kui.2022.053","url":null,"abstract":"Increased awareness of the negative effects of sun radiation exposure has resulted in the increased production and use of sunscreens. This in turn has resulted in the accumulation of UV filters, sunscreen active ingredients, in the aquatic environment. Studies have shown that UV filters, espe - cially those organic, such as oxybenzone, octinoxate, and 4-MBC, pose a danger to a wide range of organisms. Research findings discussed in this paper refer to the toxic effect of the stated chem - icals on marine and freshwater organisms, and they indicate that the presence of these chemicals in the aquatic environment has resulted in inhibition of growth and photosynthesis, reproductive and developmental disorders, organism bleaching, and even death of test organisms. Inorganic UV filters, which are mostly nanoparticle forms of TiO 2 and ZnO, show lower toxicity or have hardly any effect on test organisms in the conducted ecotoxicological tests. However, in studies in which they have shown low toxicity, this toxicity is not only caused by the presence of nanoparticles, but also by the formation of reactive oxygen species, which in some organisms has caused growth inhibition, bleaching, abnormal embryogenesis, and oxidative stress. Further research is necessary to understand better the toxic effects of these compounds, and to assess more accurately the risks they pose to the aquatic environment as well as the entire ecosystem.","PeriodicalId":43849,"journal":{"name":"Kemija u Industriji-Journal of Chemists and Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43740985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Physical and Chemical Properties of Selected Sample of Castor Oil, Ricinus communis L.","authors":"Š. Mandal","doi":"10.15255/kui.2022.052","DOIUrl":"https://doi.org/10.15255/kui.2022.052","url":null,"abstract":",","PeriodicalId":43849,"journal":{"name":"Kemija u Industriji-Journal of Chemists and Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48038012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Danijela Bićanić, Antonela Čugalj, Marko Jajčević, Antonija Lazinica, Martina Miloloža, Dajana Kučić Grgić
{"title":"Ekotoksičnost nesteroidnih protuupalnih lijekova na vodene organizme","authors":"Danijela Bićanić, Antonela Čugalj, Marko Jajčević, Antonija Lazinica, Martina Miloloža, Dajana Kučić Grgić","doi":"10.15255/kui.2022.042","DOIUrl":"https://doi.org/10.15255/kui.2022.042","url":null,"abstract":"","PeriodicalId":43849,"journal":{"name":"Kemija u Industriji-Journal of Chemists and Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42052536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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