TY  - JOUR
AU  - Marković, Marija
AU  - Daković, Aleksandra
AU  - Rottinghaus, George E.
AU  - Kragović, Milan
AU  - Petković, Andela
AU  - Krajišnik, Danina
AU  - Milić, Jela
AU  - Mercurio, Mariano
AU  - de Gennaro, Bruno
PY  - 2017
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2929
AB  - In this study, organozeolites were prepared by treatment of the natural zeolites (clinoptilolite and phillipsite) with cetylpyridinium chloride (CP) equivalent to 50 and 100% of their external cation exchange capacities (ECEC). Organoclinoptilolites (ZCPs) and organophillipsites (PCPs) were characterized by FTIR spectroscopy, thermal analysis, determination of the point of zero charge and zeta potential. Adsorption of zearalenone (ZEN) by ZCPs and PCPs at pH 3 and 7 was investigated. Results showed that adsorption of ZEN increases with increasing amounts of CP at the zeolitic surfaces for both ZCPs and PCPs but the adsorption mechanism was different. Adsorption of ZEN by ZCPs followed a linear type of isotherm at pH 3 and 7 while ZEN adsorption by PCPs showed non linear (Langmuir and Freundlich) type of isotherm at both pH values. Different interactions between the ZEN molecule (or ion) and ZCPs and PCPs occurred: partition (linear isotherms) and adsorption in addition to partition (non linear isotherms), respectively. For the highest level of organic phase at the zeolitic surfaces, the maximum adsorbed amount of ZEN was 5.73 mg/g for organoclinoptilolite and 6.86 mg/g for organophillipsite at pH 3. Slightly higher adsorption: 6.98 mg/g for organoclinoptilolite and 7.54 mg/g for organophillipsite was achieved at pH 7. The results confirmed that CP ions at both zeolitic surfaces are responsible for ZEN adsorption and that organophillipsites are as effective in ZEN adsorption as organoclinoptilolites.
PB  - Elsevier Science BV, Amsterdam
T2  - Colloids and Surfaces B: Biointerfaces
T1  - Adsorption of the mycotoxin zearalenone by clinoptilolite and phillipsite zeolites treated with cetylpyridinium surfactant
VL  - 151
SP  - 324
EP  - 332
DO  - 10.1016/j.colsurfb.2016.12.033
ER  - 

@article{
author = "Marković, Marija and Daković, Aleksandra and Rottinghaus, George E. and Kragović, Milan and Petković, Andela and Krajišnik, Danina and Milić, Jela and Mercurio, Mariano and de Gennaro, Bruno",
year = "2017",
abstract = "In this study, organozeolites were prepared by treatment of the natural zeolites (clinoptilolite and phillipsite) with cetylpyridinium chloride (CP) equivalent to 50 and 100% of their external cation exchange capacities (ECEC). Organoclinoptilolites (ZCPs) and organophillipsites (PCPs) were characterized by FTIR spectroscopy, thermal analysis, determination of the point of zero charge and zeta potential. Adsorption of zearalenone (ZEN) by ZCPs and PCPs at pH 3 and 7 was investigated. Results showed that adsorption of ZEN increases with increasing amounts of CP at the zeolitic surfaces for both ZCPs and PCPs but the adsorption mechanism was different. Adsorption of ZEN by ZCPs followed a linear type of isotherm at pH 3 and 7 while ZEN adsorption by PCPs showed non linear (Langmuir and Freundlich) type of isotherm at both pH values. Different interactions between the ZEN molecule (or ion) and ZCPs and PCPs occurred: partition (linear isotherms) and adsorption in addition to partition (non linear isotherms), respectively. For the highest level of organic phase at the zeolitic surfaces, the maximum adsorbed amount of ZEN was 5.73 mg/g for organoclinoptilolite and 6.86 mg/g for organophillipsite at pH 3. Slightly higher adsorption: 6.98 mg/g for organoclinoptilolite and 7.54 mg/g for organophillipsite was achieved at pH 7. The results confirmed that CP ions at both zeolitic surfaces are responsible for ZEN adsorption and that organophillipsites are as effective in ZEN adsorption as organoclinoptilolites.",
publisher = "Elsevier Science BV, Amsterdam",
journal = "Colloids and Surfaces B: Biointerfaces",
title = "Adsorption of the mycotoxin zearalenone by clinoptilolite and phillipsite zeolites treated with cetylpyridinium surfactant",
volume = "151",
pages = "324-332",
doi = "10.1016/j.colsurfb.2016.12.033"
}

Marković, M., Daković, A., Rottinghaus, G. E., Kragović, M., Petković, A., Krajišnik, D., Milić, J., Mercurio, M.,& de Gennaro, B.. (2017). Adsorption of the mycotoxin zearalenone by clinoptilolite and phillipsite zeolites treated with cetylpyridinium surfactant. in Colloids and Surfaces B: Biointerfaces
Elsevier Science BV, Amsterdam., 151, 324-332.
https://doi.org/10.1016/j.colsurfb.2016.12.033

Marković M, Daković A, Rottinghaus GE, Kragović M, Petković A, Krajišnik D, Milić J, Mercurio M, de Gennaro B. Adsorption of the mycotoxin zearalenone by clinoptilolite and phillipsite zeolites treated with cetylpyridinium surfactant. in Colloids and Surfaces B: Biointerfaces. 2017;151:324-332.
doi:10.1016/j.colsurfb.2016.12.033 .

Marković, Marija, Daković, Aleksandra, Rottinghaus, George E., Kragović, Milan, Petković, Andela, Krajišnik, Danina, Milić, Jela, Mercurio, Mariano, de Gennaro, Bruno, "Adsorption of the mycotoxin zearalenone by clinoptilolite and phillipsite zeolites treated with cetylpyridinium surfactant" in Colloids and Surfaces B: Biointerfaces, 151 (2017):324-332,
https://doi.org/10.1016/j.colsurfb.2016.12.033 . .

TY  - JOUR
AU  - Marković, Marija
AU  - Daković, Aleksandra
AU  - Rottinghaus, George E.
AU  - Petković, Andela
AU  - Kragović, Milan
AU  - Krajišnik, Danina
AU  - Milić, Jela
PY  - 2017
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2827
AB  - Benzalkonium chloride - BC (the mixture of alkylbenzyldimethylammonium chlorides containing the alkyl groups having chain lengths of C8 to C18 and benzyl functional group) was used as a surfactant for production of organozeolites (BZs). The natural zeolite - clinoptilolite was modified with three different levels (2, 5 and 10 mmol/100 g) of BC. FTIR spectroscopy, thermal analysis, zeta potential measurements, determination of the point of zero charge and BET were used to determine the quantity of the surfactant at the zeolitic surface. The main aim was to investigate adsorption properties of BZs towards ochratoxin A (OCHRA) and zearalenone (ZEN) under in vitro conditions. Results showed that adsorption of OCHRA and ZEN by BZs increased with increasing amounts of BC at the zeolitic surface but the adsorption mechanism was different. Adsorption of OCHRA by BZs followed nonlinear isotherms at pH 3 and 7, and higher adsorption capacity was observed at pH 3. This indicates that adsorption was dependent on the form of OCHRA in solution and that the sites at the uncovered zeolitic surface together with the surfactants contributed to OCHRA adsorption. Adsorption of ZEN by BZs showed linear isotherms at pH 3 and 7 and similar amounts were adsorbed at both pH values. This suggests that adsorption is practically independent of the form of ZEN in solution and that organic cations at the zeolitic surface are the active sites relevant for ZEN adsorption.
PB  - Elsevier Science BV, Amsterdam
T2  - Colloids and Surfaces A: Physicochemical and Engineering Aspects
T1  - Ochratoxin A and zearalenone adsorption by the natural zeolite treated with benzalkonium chloride
VL  - 529
SP  - 7
EP  - 17
DO  - 10.1016/j.colsurfa.2017.05.054
ER  - 

@article{
author = "Marković, Marija and Daković, Aleksandra and Rottinghaus, George E. and Petković, Andela and Kragović, Milan and Krajišnik, Danina and Milić, Jela",
year = "2017",
abstract = "Benzalkonium chloride - BC (the mixture of alkylbenzyldimethylammonium chlorides containing the alkyl groups having chain lengths of C8 to C18 and benzyl functional group) was used as a surfactant for production of organozeolites (BZs). The natural zeolite - clinoptilolite was modified with three different levels (2, 5 and 10 mmol/100 g) of BC. FTIR spectroscopy, thermal analysis, zeta potential measurements, determination of the point of zero charge and BET were used to determine the quantity of the surfactant at the zeolitic surface. The main aim was to investigate adsorption properties of BZs towards ochratoxin A (OCHRA) and zearalenone (ZEN) under in vitro conditions. Results showed that adsorption of OCHRA and ZEN by BZs increased with increasing amounts of BC at the zeolitic surface but the adsorption mechanism was different. Adsorption of OCHRA by BZs followed nonlinear isotherms at pH 3 and 7, and higher adsorption capacity was observed at pH 3. This indicates that adsorption was dependent on the form of OCHRA in solution and that the sites at the uncovered zeolitic surface together with the surfactants contributed to OCHRA adsorption. Adsorption of ZEN by BZs showed linear isotherms at pH 3 and 7 and similar amounts were adsorbed at both pH values. This suggests that adsorption is practically independent of the form of ZEN in solution and that organic cations at the zeolitic surface are the active sites relevant for ZEN adsorption.",
publisher = "Elsevier Science BV, Amsterdam",
journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",
title = "Ochratoxin A and zearalenone adsorption by the natural zeolite treated with benzalkonium chloride",
volume = "529",
pages = "7-17",
doi = "10.1016/j.colsurfa.2017.05.054"
}

Marković, M., Daković, A., Rottinghaus, G. E., Petković, A., Kragović, M., Krajišnik, D.,& Milić, J.. (2017). Ochratoxin A and zearalenone adsorption by the natural zeolite treated with benzalkonium chloride. in Colloids and Surfaces A: Physicochemical and Engineering Aspects
Elsevier Science BV, Amsterdam., 529, 7-17.
https://doi.org/10.1016/j.colsurfa.2017.05.054

Marković M, Daković A, Rottinghaus GE, Petković A, Kragović M, Krajišnik D, Milić J. Ochratoxin A and zearalenone adsorption by the natural zeolite treated with benzalkonium chloride. in Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2017;529:7-17.
doi:10.1016/j.colsurfa.2017.05.054 .

Marković, Marija, Daković, Aleksandra, Rottinghaus, George E., Petković, Andela, Kragović, Milan, Krajišnik, Danina, Milić, Jela, "Ochratoxin A and zearalenone adsorption by the natural zeolite treated with benzalkonium chloride" in Colloids and Surfaces A: Physicochemical and Engineering Aspects, 529 (2017):7-17,
https://doi.org/10.1016/j.colsurfa.2017.05.054 . .