TY  - JOUR
AU  - Jovanovic, Milos
AU  - Cujic-Nikolic, Nada
AU  - Drinic, Zorica
AU  - Jankovic, Teodora
AU  - Markovic, Smilja
AU  - Petrović, Predrag
AU  - Savikin, Katarina
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4799
AB  - Willow gentian as a source of bitter compounds is traditionally used for digestive disorders. Gentiana root extract was spray dried using five different carriers (maltodextrin, whey protein, pectin, starch, gelatine) at various concentrations. Powders were characterized in terms of physical properties and encapsulation efficiency of bioactive compounds. The moisture content of all powders was between 1.78 and 3.46 %, and bulk density from 0.23 to 0.32 g/mL. Powders produced with maltodextrin and whey protein provided the highest yield (around 75 and 70 %, respectively) and the lowest hygroscopicity (6 and 7%, respectively). Gelatin and pectin provided powders with the highest encapsulation efficiency of total phenolic as well as the individual compounds. The stability of encapsulated bioactive compounds was studied after 6 months, and the most stable in all samples were gentiopicrin and sweroside with their content decreased by 10 % only. This study has shown that spray drying of gentian root extract produces powders with good physical properties and encapsulation of bioactives.
T2  - Industrial Crops and Products
T1  - Spray drying of Gentiana asclepiadea L. root extract: Successful encapsulation into powders with preserved stability of bioactive compounds
VL  - 172
DO  - 10.1016/j.indcrop.2021.114044
ER  - 

@article{
author = "Jovanovic, Milos and Cujic-Nikolic, Nada and Drinic, Zorica and Jankovic, Teodora and Markovic, Smilja and Petrović, Predrag and Savikin, Katarina",
year = "2021",
abstract = "Willow gentian as a source of bitter compounds is traditionally used for digestive disorders. Gentiana root extract was spray dried using five different carriers (maltodextrin, whey protein, pectin, starch, gelatine) at various concentrations. Powders were characterized in terms of physical properties and encapsulation efficiency of bioactive compounds. The moisture content of all powders was between 1.78 and 3.46 %, and bulk density from 0.23 to 0.32 g/mL. Powders produced with maltodextrin and whey protein provided the highest yield (around 75 and 70 %, respectively) and the lowest hygroscopicity (6 and 7%, respectively). Gelatin and pectin provided powders with the highest encapsulation efficiency of total phenolic as well as the individual compounds. The stability of encapsulated bioactive compounds was studied after 6 months, and the most stable in all samples were gentiopicrin and sweroside with their content decreased by 10 % only. This study has shown that spray drying of gentian root extract produces powders with good physical properties and encapsulation of bioactives.",
journal = "Industrial Crops and Products",
title = "Spray drying of Gentiana asclepiadea L. root extract: Successful encapsulation into powders with preserved stability of bioactive compounds",
volume = "172",
doi = "10.1016/j.indcrop.2021.114044"
}

Jovanovic, M., Cujic-Nikolic, N., Drinic, Z., Jankovic, T., Markovic, S., Petrović, P.,& Savikin, K.. (2021). Spray drying of Gentiana asclepiadea L. root extract: Successful encapsulation into powders with preserved stability of bioactive compounds. in Industrial Crops and Products, 172.
https://doi.org/10.1016/j.indcrop.2021.114044

Jovanovic M, Cujic-Nikolic N, Drinic Z, Jankovic T, Markovic S, Petrović P, Savikin K. Spray drying of Gentiana asclepiadea L. root extract: Successful encapsulation into powders with preserved stability of bioactive compounds. in Industrial Crops and Products. 2021;172.
doi:10.1016/j.indcrop.2021.114044 .

Jovanovic, Milos, Cujic-Nikolic, Nada, Drinic, Zorica, Jankovic, Teodora, Markovic, Smilja, Petrović, Predrag, Savikin, Katarina, "Spray drying of Gentiana asclepiadea L. root extract: Successful encapsulation into powders with preserved stability of bioactive compounds" in Industrial Crops and Products, 172 (2021),
https://doi.org/10.1016/j.indcrop.2021.114044 . .

TY  - JOUR
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena P.
AU  - Vujančević, Jelena D.
AU  - Spreitzer, Matjaz
AU  - Kovač, Janez
AU  - Bartolić, Dragana
AU  - Marković, Smilja
AU  - Janković-Častvan, Ivona
AU  - Tadić, Nenad B.
AU  - Nikolić, Maria Vesna
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4845
AB  - Nanostructured Fe2TiO5 (pseudobrookite), a mixed metal oxide material holds significant promise for utilization in energy and environmental applications. However, its full application is still hindered due to the difficulty to synthesize monophasic Fe2TiO5 with high crystallinity and a large specific surface area. Herein, Fe2TiO5 nanofibers were synthesized via a versatile and low-cost electrospinning method, followed by a calcination process at different temperatures. We found a significant effect of the calcination process and its duration on the crystalline phase in the form of either pseudobrookite or pseudobrookite-hematite-rutile and the morphology of calcined nanofibers. The crystallite size increased whereas the specific surface area decreased with an increase in calcination temperature. At higher temperatures, the growth of Fe2TiO5 nanoparticles and simultaneous coalescence of small particles was noted. The highest specific surface area was obtained for the sample calcined at 500 degrees C for 6 h (S-BET = 64.4 m(2) g(-1)). This work opens new opportunities in the synthesis of Fe2TiO5 nanostructures using the electrospinning method and a subsequent optimized calcination process for energy-related applications.
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - Exploring the impact of calcination parameters on the crystal structure, morphology, and optical properties of electrospun Fe2TiO5 nanofibers
EP  - 32368
IS  - 51
SP  - 32358
VL  - 11
DO  - 10.1039/d1ra05748k
ER  - 

@article{
author = "Vasiljević, Zorka Ž. and Dojčinović, Milena P. and Vujančević, Jelena D. and Spreitzer, Matjaz and Kovač, Janez and Bartolić, Dragana and Marković, Smilja and Janković-Častvan, Ivona and Tadić, Nenad B. and Nikolić, Maria Vesna",
year = "2021",
abstract = "Nanostructured Fe2TiO5 (pseudobrookite), a mixed metal oxide material holds significant promise for utilization in energy and environmental applications. However, its full application is still hindered due to the difficulty to synthesize monophasic Fe2TiO5 with high crystallinity and a large specific surface area. Herein, Fe2TiO5 nanofibers were synthesized via a versatile and low-cost electrospinning method, followed by a calcination process at different temperatures. We found a significant effect of the calcination process and its duration on the crystalline phase in the form of either pseudobrookite or pseudobrookite-hematite-rutile and the morphology of calcined nanofibers. The crystallite size increased whereas the specific surface area decreased with an increase in calcination temperature. At higher temperatures, the growth of Fe2TiO5 nanoparticles and simultaneous coalescence of small particles was noted. The highest specific surface area was obtained for the sample calcined at 500 degrees C for 6 h (S-BET = 64.4 m(2) g(-1)). This work opens new opportunities in the synthesis of Fe2TiO5 nanostructures using the electrospinning method and a subsequent optimized calcination process for energy-related applications.",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "Exploring the impact of calcination parameters on the crystal structure, morphology, and optical properties of electrospun Fe2TiO5 nanofibers",
pages = "32368-32358",
number = "51",
volume = "11",
doi = "10.1039/d1ra05748k"
}

Vasiljević, Z. Ž., Dojčinović, M. P., Vujančević, J. D., Spreitzer, M., Kovač, J., Bartolić, D., Marković, S., Janković-Častvan, I., Tadić, N. B.,& Nikolić, M. V.. (2021). Exploring the impact of calcination parameters on the crystal structure, morphology, and optical properties of electrospun Fe2TiO5 nanofibers. in RSC Advances
Royal Society of Chemistry., 11(51), 32358-32368.
https://doi.org/10.1039/d1ra05748k

Vasiljević ZŽ, Dojčinović MP, Vujančević JD, Spreitzer M, Kovač J, Bartolić D, Marković S, Janković-Častvan I, Tadić NB, Nikolić MV. Exploring the impact of calcination parameters on the crystal structure, morphology, and optical properties of electrospun Fe2TiO5 nanofibers. in RSC Advances. 2021;11(51):32358-32368.
doi:10.1039/d1ra05748k .

Vasiljević, Zorka Ž., Dojčinović, Milena P., Vujančević, Jelena D., Spreitzer, Matjaz, Kovač, Janez, Bartolić, Dragana, Marković, Smilja, Janković-Častvan, Ivona, Tadić, Nenad B., Nikolić, Maria Vesna, "Exploring the impact of calcination parameters on the crystal structure, morphology, and optical properties of electrospun Fe2TiO5 nanofibers" in RSC Advances, 11, no. 51 (2021):32358-32368,
https://doi.org/10.1039/d1ra05748k . .

TY  - JOUR
AU  - Nikolić, Irena
AU  - Đurović, Dijana
AU  - Marković, Smilja
AU  - Veselinović, Liljana
AU  - Janković-Častvan, Ivona
AU  - Radmilović, Vuk
AU  - Radmilović, Velimir R.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4743
AB  - Steel production in electric arc furnaces yielding formation of two waste materials, toxic electric arc furnace dust (EAFD) and non-hazardous electric arc furnace slag (EAFS). EAFD presents a potential hazard to the environment as it is characterized by the presence of heavy metals. This study dealt with the synthesis and characterization of alkali activated slag cement (AAS) based on EAFS with addition of 1-7% of Zn-rich EAFD dopant. Effects of slag replacement with dust on the compressive strength, physico-chemical, mineralogical and morphological properties of AAS cement were evaluated. This replacement lead to the development of porosity of AAS matrix, and retardation of slag alkali activation which resulted in the weakening of the AAS structure and hence in compressive strength decrease as pure AAS cement compressive strength was 21.04 MPa while AAS doped with 7% of EAFD reached only 8.4 MPa. On the other hand, AAS doped with 5% of EAFD exhibited compressive strength of 13.82 MPa, making it is still suitable for construction purposes... Scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM/EDS), scanning transmission electron microscope (STEM) in high angle annular dark field (HAADF) mode, X-ray powder diffraction (XRPD) investigations and standard EN 12457-2 leaching test provided information on the ability of AAS based on EAFS to fix Zn in AAS matrix.. The concentration of Zn in leachate of AAS cement doped with 5% of EAFD was 9.20 mg/kg which is below the limit prescribed for the granular waste acceptable at non-hazardous landfills according the European Directive 2003/33/CE.
T2  - Journal of Materials Research and Technology-JMR&T
T1  - Alkali activated slag cement doped with Zn-rich electric arc furnace dust
EP  - 12794
IS  - 6
SP  - 12783
VL  - 9
DO  - 10.1016/j.jmrt.2020.09.024
ER  - 

@article{
author = "Nikolić, Irena and Đurović, Dijana and Marković, Smilja and Veselinović, Liljana and Janković-Častvan, Ivona and Radmilović, Vuk and Radmilović, Velimir R.",
year = "2020",
abstract = "Steel production in electric arc furnaces yielding formation of two waste materials, toxic electric arc furnace dust (EAFD) and non-hazardous electric arc furnace slag (EAFS). EAFD presents a potential hazard to the environment as it is characterized by the presence of heavy metals. This study dealt with the synthesis and characterization of alkali activated slag cement (AAS) based on EAFS with addition of 1-7% of Zn-rich EAFD dopant. Effects of slag replacement with dust on the compressive strength, physico-chemical, mineralogical and morphological properties of AAS cement were evaluated. This replacement lead to the development of porosity of AAS matrix, and retardation of slag alkali activation which resulted in the weakening of the AAS structure and hence in compressive strength decrease as pure AAS cement compressive strength was 21.04 MPa while AAS doped with 7% of EAFD reached only 8.4 MPa. On the other hand, AAS doped with 5% of EAFD exhibited compressive strength of 13.82 MPa, making it is still suitable for construction purposes... Scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM/EDS), scanning transmission electron microscope (STEM) in high angle annular dark field (HAADF) mode, X-ray powder diffraction (XRPD) investigations and standard EN 12457-2 leaching test provided information on the ability of AAS based on EAFS to fix Zn in AAS matrix.. The concentration of Zn in leachate of AAS cement doped with 5% of EAFD was 9.20 mg/kg which is below the limit prescribed for the granular waste acceptable at non-hazardous landfills according the European Directive 2003/33/CE.",
journal = "Journal of Materials Research and Technology-JMR&T",
title = "Alkali activated slag cement doped with Zn-rich electric arc furnace dust",
pages = "12794-12783",
number = "6",
volume = "9",
doi = "10.1016/j.jmrt.2020.09.024"
}

Nikolić, I., Đurović, D., Marković, S., Veselinović, L., Janković-Častvan, I., Radmilović, V.,& Radmilović, V. R.. (2020). Alkali activated slag cement doped with Zn-rich electric arc furnace dust. in Journal of Materials Research and Technology-JMR&T, 9(6), 12783-12794.
https://doi.org/10.1016/j.jmrt.2020.09.024

Nikolić I, Đurović D, Marković S, Veselinović L, Janković-Častvan I, Radmilović V, Radmilović VR. Alkali activated slag cement doped with Zn-rich electric arc furnace dust. in Journal of Materials Research and Technology-JMR&T. 2020;9(6):12783-12794.
doi:10.1016/j.jmrt.2020.09.024 .

Nikolić, Irena, Đurović, Dijana, Marković, Smilja, Veselinović, Liljana, Janković-Častvan, Ivona, Radmilović, Vuk, Radmilović, Velimir R., "Alkali activated slag cement doped with Zn-rich electric arc furnace dust" in Journal of Materials Research and Technology-JMR&T, 9, no. 6 (2020):12783-12794,
https://doi.org/10.1016/j.jmrt.2020.09.024 . .