Razvoj i primena proizvoda na bazi mineralnih sirovina u proizvodnji bezbedne hrane

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Razvoj i primena proizvoda na bazi mineralnih sirovina u proizvodnji bezbedne hrane (en)
Развој и примена производа на бази минералних сировина у производњи безбедне хране (sr)
Razvoj i primena proizvoda na bazi mineralnih sirovina u proizvodnji bezbedne hrane (sr_RS)
Authors

Publications

Supplementary data for the article: Popović, N.; Stanišić, M.; Ilić Đurđić, K.; Prodanović, O.; Polović, N.; Prodanović, R. Dopamine-Modified Pectin for a Streptomyces Cyaneus Laccase Induced Microbeads Formation, Immobilization, and Textile Dyes Decolorization. Environmental Technology & Innovation 2021, 22, 101399. https://doi.org/10.1016/j.eti.2021.101399.

Popović, Nikolina; Stanišić, Marija D.; Ilić Đurđić, Karla; Prodanović, Olivera; Polović, Natalija; Prodanović, Radivoje

(Elsevier, 2021)

TY  - DATA
AU  - Popović, Nikolina
AU  - Stanišić, Marija D.
AU  - Ilić Đurđić, Karla
AU  - Prodanović, Olivera
AU  - Polović, Natalija
AU  - Prodanović, Radivoje
PY  - 2021
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4493
PB  - Elsevier
T2  - Environmental Technology & Innovation
T2  - Environmental Technology & InnovationEnvironmental Technology & Innovation
T1  - Supplementary data for the article: Popović, N.; Stanišić, M.; Ilić Đurđić, K.; Prodanović, O.; Polović, N.; Prodanović, R. Dopamine-Modified Pectin for a Streptomyces Cyaneus Laccase Induced Microbeads Formation, Immobilization, and Textile Dyes Decolorization. Environmental Technology & Innovation 2021, 22, 101399. https://doi.org/10.1016/j.eti.2021.101399.
UR  - https://hdl.handle.net/21.15107/rcub_cherry_4494
ER  - 
@misc{
author = "Popović, Nikolina and Stanišić, Marija D. and Ilić Đurđić, Karla and Prodanović, Olivera and Polović, Natalija and Prodanović, Radivoje",
year = "2021",
publisher = "Elsevier",
journal = "Environmental Technology & Innovation, Environmental Technology & InnovationEnvironmental Technology & Innovation",
title = "Supplementary data for the article: Popović, N.; Stanišić, M.; Ilić Đurđić, K.; Prodanović, O.; Polović, N.; Prodanović, R. Dopamine-Modified Pectin for a Streptomyces Cyaneus Laccase Induced Microbeads Formation, Immobilization, and Textile Dyes Decolorization. Environmental Technology & Innovation 2021, 22, 101399. https://doi.org/10.1016/j.eti.2021.101399.",
url = "https://hdl.handle.net/21.15107/rcub_cherry_4494"
}
Popović, N., Stanišić, M. D., Ilić Đurđić, K., Prodanović, O., Polović, N.,& Prodanović, R.. (2021). Supplementary data for the article: Popović, N.; Stanišić, M.; Ilić Đurđić, K.; Prodanović, O.; Polović, N.; Prodanović, R. Dopamine-Modified Pectin for a Streptomyces Cyaneus Laccase Induced Microbeads Formation, Immobilization, and Textile Dyes Decolorization. Environmental Technology & Innovation 2021, 22, 101399. https://doi.org/10.1016/j.eti.2021.101399.. in Environmental Technology & Innovation
Elsevier..
https://hdl.handle.net/21.15107/rcub_cherry_4494
Popović N, Stanišić MD, Ilić Đurđić K, Prodanović O, Polović N, Prodanović R. Supplementary data for the article: Popović, N.; Stanišić, M.; Ilić Đurđić, K.; Prodanović, O.; Polović, N.; Prodanović, R. Dopamine-Modified Pectin for a Streptomyces Cyaneus Laccase Induced Microbeads Formation, Immobilization, and Textile Dyes Decolorization. Environmental Technology & Innovation 2021, 22, 101399. https://doi.org/10.1016/j.eti.2021.101399.. in Environmental Technology & Innovation. 2021;.
https://hdl.handle.net/21.15107/rcub_cherry_4494 .
Popović, Nikolina, Stanišić, Marija D., Ilić Đurđić, Karla, Prodanović, Olivera, Polović, Natalija, Prodanović, Radivoje, "Supplementary data for the article: Popović, N.; Stanišić, M.; Ilić Đurđić, K.; Prodanović, O.; Polović, N.; Prodanović, R. Dopamine-Modified Pectin for a Streptomyces Cyaneus Laccase Induced Microbeads Formation, Immobilization, and Textile Dyes Decolorization. Environmental Technology & Innovation 2021, 22, 101399. https://doi.org/10.1016/j.eti.2021.101399." in Environmental Technology & Innovation (2021),
https://hdl.handle.net/21.15107/rcub_cherry_4494 .

Dopamine-modified pectin for a Streptomyces cyaneus laccase induced microbeads formation, immobilization, and textile dyes decolorization

Popović, Nikolina; Stanišić, Marija D.; Ilić Đurđić, Karla; Prodanović, Olivera; Polović, Natalija; Prodanović, Radivoje

(Elsevier, 2021)

TY  - JOUR
AU  - Popović, Nikolina
AU  - Stanišić, Marija D.
AU  - Ilić Đurđić, Karla
AU  - Prodanović, Olivera
AU  - Polović, Natalija
AU  - Prodanović, Radivoje
PY  - 2021
UR  - https://www.sciencedirect.com/science/article/pii/S235218642100047X
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4493
AB  - Pectins are a group of heterologous polysaccharides capable of forming hydrogels and applicable in many industrial processes. A new type of modified pectin was synthesized by periodate oxidation and reductive amination with dopamine and sodium cyanoborohydride. The success of modification was confirmed by UV–Vis,FTIR, and 1H NMR spectroscopy. The obtained dopamine-pectin could form hydrogels by ionic crosslinking of carboxyl groups with calcium or by crosslinking phenol groups with laccase. For enzymatic crosslinking with laccase from Streptomyces cyaneus expressed in E. coli, isolation and purification of the enzyme was done. Using emulsion-based enzymatic crosslinking polymerization, dopamine-pectin microbeads with immobilized laccase were made. The immobilized laccase showed improved thermal and pH stability in comparison to the free enzyme. The immobilized biocatalyst effectively decolorized various dyes: Amido Black 10B, Reactive Black 5, and Evans Blue. After ten cycles of repeated use, the microbead immobilized laccase could still decolorize 60% and 36% of Amido Black 10B and Reactive Black 5, respectively.
PB  - Elsevier
T2  - Environmental Technology & Innovation
T2  - Environmental Technology & InnovationEnvironmental Technology & Innovation
T1  - Dopamine-modified pectin for a Streptomyces cyaneus laccase induced microbeads formation, immobilization, and textile dyes decolorization
VL  - 22
SP  - 101399
DO  - 10.1016/j.eti.2021.101399
ER  - 
@article{
author = "Popović, Nikolina and Stanišić, Marija D. and Ilić Đurđić, Karla and Prodanović, Olivera and Polović, Natalija and Prodanović, Radivoje",
year = "2021",
abstract = "Pectins are a group of heterologous polysaccharides capable of forming hydrogels and applicable in many industrial processes. A new type of modified pectin was synthesized by periodate oxidation and reductive amination with dopamine and sodium cyanoborohydride. The success of modification was confirmed by UV–Vis,FTIR, and 1H NMR spectroscopy. The obtained dopamine-pectin could form hydrogels by ionic crosslinking of carboxyl groups with calcium or by crosslinking phenol groups with laccase. For enzymatic crosslinking with laccase from Streptomyces cyaneus expressed in E. coli, isolation and purification of the enzyme was done. Using emulsion-based enzymatic crosslinking polymerization, dopamine-pectin microbeads with immobilized laccase were made. The immobilized laccase showed improved thermal and pH stability in comparison to the free enzyme. The immobilized biocatalyst effectively decolorized various dyes: Amido Black 10B, Reactive Black 5, and Evans Blue. After ten cycles of repeated use, the microbead immobilized laccase could still decolorize 60% and 36% of Amido Black 10B and Reactive Black 5, respectively.",
publisher = "Elsevier",
journal = "Environmental Technology & Innovation, Environmental Technology & InnovationEnvironmental Technology & Innovation",
title = "Dopamine-modified pectin for a Streptomyces cyaneus laccase induced microbeads formation, immobilization, and textile dyes decolorization",
volume = "22",
pages = "101399",
doi = "10.1016/j.eti.2021.101399"
}
Popović, N., Stanišić, M. D., Ilić Đurđić, K., Prodanović, O., Polović, N.,& Prodanović, R.. (2021). Dopamine-modified pectin for a Streptomyces cyaneus laccase induced microbeads formation, immobilization, and textile dyes decolorization. in Environmental Technology & Innovation
Elsevier., 22, 101399.
https://doi.org/10.1016/j.eti.2021.101399
Popović N, Stanišić MD, Ilić Đurđić K, Prodanović O, Polović N, Prodanović R. Dopamine-modified pectin for a Streptomyces cyaneus laccase induced microbeads formation, immobilization, and textile dyes decolorization. in Environmental Technology & Innovation. 2021;22:101399.
doi:10.1016/j.eti.2021.101399 .
Popović, Nikolina, Stanišić, Marija D., Ilić Đurđić, Karla, Prodanović, Olivera, Polović, Natalija, Prodanović, Radivoje, "Dopamine-modified pectin for a Streptomyces cyaneus laccase induced microbeads formation, immobilization, and textile dyes decolorization" in Environmental Technology & Innovation, 22 (2021):101399,
https://doi.org/10.1016/j.eti.2021.101399 . .
10
2
9
7

Pre-service chemistry teachers’ perception of the educational processes during the COVID-19 pandemic

Trivić, Dragica; Milanović, Vesna D.

(Slovenia : University of Ljubljana, Faculty of Education, 2021)

TY  - CONF
AU  - Trivić, Dragica
AU  - Milanović, Vesna D.
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4947
AB  - The COVID-19 pandemic and the suspension of face-to-face learning at the University of Belgrade -
Faculty of Chemistry (UBFC) influenced the education of all chemistry students. The realization of the
experimental part of the studies presented a major challenge within all study programmes (Huang, 2020;
Youssef et al., 2020), while the realization of school practice was an additional challenge within the
education of pre-service chemistry teachers. In order to examine the pre-service chemistry teachers’ views
on the quality of the educational processes during the pandemic, we developed a voluntary anonymous
online survey using Google Forms. Six pre-service chemistry teachers, students of the fifth year of the
integrated undergraduate and graduate academic studies at the UBFC, participated in the research. The
survey consisted of four parts with 42 questions altogether. In the first part, the students’ demographic
data were collected. In the second part, the respondents were given several sets of questions regarding
ICT. In the third part, using a five-point Likert scale, the respondents expressed and then explained their
views regarding the general impact of the pandemic on their learning, the effectiveness of online lectures
and theory exercises within different chemistry and chemistry didactics courses, and the effectiveness of
assessments. In addition to this, they estimated the effectiveness of the laboratory exercises, which were
conducted face-to-face during one part of the semester, and the school practice in the pandemic
circumstances. In the last part, the respondents assessed the advantages and disadvantages of online
teaching and its impact on the development of teacher competencies. They put forward some suggestions
on how to improve online teaching and their views on the combination of online and face-to-face teaching
in the future. Respondents had no experience with online teaching/learning before the pandemic, but now
they spend two to eight hours a day engaged in these activities. All students usually use the PDF and PPT
presentations which accompany lectures, five of them use the Faculty's e-platform, while YouTube
videos, e-books, educational applications and web sites and the recordings of online lectures are used less
frequently. The effectiveness of online instruction within chemistry courses was rated 4 (Agree) by most
students (five out of six). Similarly, students rated the effectiveness of the online instruction within
chemistry didactics courses as 4 (three out of six) and 5 (two out of six). The effectiveness of online
theory exercises was rated the same for both chemistry courses and chemistry didactics courses: grade 5
was given by three out of six students, grade 4 was given by two students and grade 3 by one student.
Three out of six students rated the effectiveness of school practice as 3, two students as 4, while one
student rated it 5. The students singled out the lack of contact with pupils at schools as a major obstacle.
However, the preparation for online teaching helped them gain some useful experience for their future
practice. None of the students fully enjoyed online teaching and most of them were more comfortable
during face-to-face instruction due to better social interaction.
PB  - Slovenia : University of Ljubljana, Faculty of Education
C3  - EUROVARIETY 2021, 9th European Variety in University Chemistry Education Conference, Book of abstracts
T1  - Pre-service chemistry teachers’ perception of the educational processes during the COVID-19 pandemic
SP  - 64
EP  - 64
UR  - https://hdl.handle.net/21.15107/rcub_cherry_4947
ER  - 
@conference{
author = "Trivić, Dragica and Milanović, Vesna D.",
year = "2021",
abstract = "The COVID-19 pandemic and the suspension of face-to-face learning at the University of Belgrade -
Faculty of Chemistry (UBFC) influenced the education of all chemistry students. The realization of the
experimental part of the studies presented a major challenge within all study programmes (Huang, 2020;
Youssef et al., 2020), while the realization of school practice was an additional challenge within the
education of pre-service chemistry teachers. In order to examine the pre-service chemistry teachers’ views
on the quality of the educational processes during the pandemic, we developed a voluntary anonymous
online survey using Google Forms. Six pre-service chemistry teachers, students of the fifth year of the
integrated undergraduate and graduate academic studies at the UBFC, participated in the research. The
survey consisted of four parts with 42 questions altogether. In the first part, the students’ demographic
data were collected. In the second part, the respondents were given several sets of questions regarding
ICT. In the third part, using a five-point Likert scale, the respondents expressed and then explained their
views regarding the general impact of the pandemic on their learning, the effectiveness of online lectures
and theory exercises within different chemistry and chemistry didactics courses, and the effectiveness of
assessments. In addition to this, they estimated the effectiveness of the laboratory exercises, which were
conducted face-to-face during one part of the semester, and the school practice in the pandemic
circumstances. In the last part, the respondents assessed the advantages and disadvantages of online
teaching and its impact on the development of teacher competencies. They put forward some suggestions
on how to improve online teaching and their views on the combination of online and face-to-face teaching
in the future. Respondents had no experience with online teaching/learning before the pandemic, but now
they spend two to eight hours a day engaged in these activities. All students usually use the PDF and PPT
presentations which accompany lectures, five of them use the Faculty's e-platform, while YouTube
videos, e-books, educational applications and web sites and the recordings of online lectures are used less
frequently. The effectiveness of online instruction within chemistry courses was rated 4 (Agree) by most
students (five out of six). Similarly, students rated the effectiveness of the online instruction within
chemistry didactics courses as 4 (three out of six) and 5 (two out of six). The effectiveness of online
theory exercises was rated the same for both chemistry courses and chemistry didactics courses: grade 5
was given by three out of six students, grade 4 was given by two students and grade 3 by one student.
Three out of six students rated the effectiveness of school practice as 3, two students as 4, while one
student rated it 5. The students singled out the lack of contact with pupils at schools as a major obstacle.
However, the preparation for online teaching helped them gain some useful experience for their future
practice. None of the students fully enjoyed online teaching and most of them were more comfortable
during face-to-face instruction due to better social interaction.",
publisher = "Slovenia : University of Ljubljana, Faculty of Education",
journal = "EUROVARIETY 2021, 9th European Variety in University Chemistry Education Conference, Book of abstracts",
title = "Pre-service chemistry teachers’ perception of the educational processes during the COVID-19 pandemic",
pages = "64-64",
url = "https://hdl.handle.net/21.15107/rcub_cherry_4947"
}
Trivić, D.,& Milanović, V. D.. (2021). Pre-service chemistry teachers’ perception of the educational processes during the COVID-19 pandemic. in EUROVARIETY 2021, 9th European Variety in University Chemistry Education Conference, Book of abstracts
Slovenia : University of Ljubljana, Faculty of Education., 64-64.
https://hdl.handle.net/21.15107/rcub_cherry_4947
Trivić D, Milanović VD. Pre-service chemistry teachers’ perception of the educational processes during the COVID-19 pandemic. in EUROVARIETY 2021, 9th European Variety in University Chemistry Education Conference, Book of abstracts. 2021;:64-64.
https://hdl.handle.net/21.15107/rcub_cherry_4947 .
Trivić, Dragica, Milanović, Vesna D., "Pre-service chemistry teachers’ perception of the educational processes during the COVID-19 pandemic" in EUROVARIETY 2021, 9th European Variety in University Chemistry Education Conference, Book of abstracts (2021):64-64,
https://hdl.handle.net/21.15107/rcub_cherry_4947 .