Kalogirou, Charalampia

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  • Kalogirou, Charalampia (3)
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Author's Bibliography

DEGRADATION OF POLYAMIDE/POLYURETHANE TEXTILE BLEND BY STREPTOMYCES SP. R1

Janković, Vukašin; Pantelić, Brana; Jeremić, Sanja; Radetić, Maja; Marković, Darka; Kalogirou, Charalampia; Ilić-Tomić, Tatjana

(Serbian Society for Microbiology, 2024)

TY  - CONF
AU  - Janković, Vukašin
AU  - Pantelić, Brana
AU  - Jeremić, Sanja
AU  - Radetić, Maja
AU  - Marković, Darka
AU  - Kalogirou, Charalampia
AU  - Ilić-Tomić, Tatjana
PY  - 2024
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/2371
AB  - The increasing production and utilization of
synthetic polymers in the textile industry over
the past five decades has raised concerns about
the environmental impact of the industry. The
recalcitrant nature of synthetic fibers hampers
the biodegradation of these textiles in the environment
and leads to the accumulation of textile
waste. Effective solutions for recycling and proper
disposal of textile waste are lacking, however,
the use of microorganisms and enzymes has
emerged as a promising approach. The genus
Streptomyces has been well studied as a producer
of different hydrolytic enzymes, several of which
have found use in industrial settings as well. As
an integral part of the soil microbiome, Streptomyces
species have been shown to interact with
different textile materials in soil and may play a
role in the degradation of these materials. This
study aimed to examine the interaction of Streptomyces
sp. R1, isolated from the rhizosphere of
Cotinus coggygria, with polyamide/polyurethane
textile, and identify potential enzymes involved in the biodegradation of synthetic textiles. The
degradation of the textile was tested in liquid
cultures (minimal salt medium) and model compost,
bio-augmented with Streptomyces sp. R1
for 4 months. After the incubation, morphological,
and changes in the functional groups of the
textiles were analysed using scanning electron
microscopy (SEM) and Fourier transform infrared
spectroscopy (FTIR). The surface of the textile
showed noticeable cracks and fissures after
4 months of burial in the bioaugmented model
compost, alongside changes in the functional
groups of the polyamide/polyurethane textile,
which indicates biodegradation of the synthetic
fibers. Searching the genome of Streptomyces sp.
R1, several enzymes involved in the degradation
of synthetic polymers were identified, including
an esterase homologous to highly efficient plastic
degrading depolymerases. Overall, the results
presented here indicate Streptomyces sp. R1 has
the potential for synthetic textile degradation
and bioremediation.
PB  - Serbian Society for Microbiology
C3  - XIII Congress of microbiologists of Serbia: From biotechnology to human and planetary health
T1  - DEGRADATION OF POLYAMIDE/POLYURETHANE TEXTILE BLEND BY STREPTOMYCES SP. R1
EP  - 96
SP  - 96
UR  - https://hdl.handle.net/21.15107/rcub_imagine_2371
ER  - 
@conference{
author = "Janković, Vukašin and Pantelić, Brana and Jeremić, Sanja and Radetić, Maja and Marković, Darka and Kalogirou, Charalampia and Ilić-Tomić, Tatjana",
year = "2024",
abstract = "The increasing production and utilization of
synthetic polymers in the textile industry over
the past five decades has raised concerns about
the environmental impact of the industry. The
recalcitrant nature of synthetic fibers hampers
the biodegradation of these textiles in the environment
and leads to the accumulation of textile
waste. Effective solutions for recycling and proper
disposal of textile waste are lacking, however,
the use of microorganisms and enzymes has
emerged as a promising approach. The genus
Streptomyces has been well studied as a producer
of different hydrolytic enzymes, several of which
have found use in industrial settings as well. As
an integral part of the soil microbiome, Streptomyces
species have been shown to interact with
different textile materials in soil and may play a
role in the degradation of these materials. This
study aimed to examine the interaction of Streptomyces
sp. R1, isolated from the rhizosphere of
Cotinus coggygria, with polyamide/polyurethane
textile, and identify potential enzymes involved in the biodegradation of synthetic textiles. The
degradation of the textile was tested in liquid
cultures (minimal salt medium) and model compost,
bio-augmented with Streptomyces sp. R1
for 4 months. After the incubation, morphological,
and changes in the functional groups of the
textiles were analysed using scanning electron
microscopy (SEM) and Fourier transform infrared
spectroscopy (FTIR). The surface of the textile
showed noticeable cracks and fissures after
4 months of burial in the bioaugmented model
compost, alongside changes in the functional
groups of the polyamide/polyurethane textile,
which indicates biodegradation of the synthetic
fibers. Searching the genome of Streptomyces sp.
R1, several enzymes involved in the degradation
of synthetic polymers were identified, including
an esterase homologous to highly efficient plastic
degrading depolymerases. Overall, the results
presented here indicate Streptomyces sp. R1 has
the potential for synthetic textile degradation
and bioremediation.",
publisher = "Serbian Society for Microbiology",
journal = "XIII Congress of microbiologists of Serbia: From biotechnology to human and planetary health",
title = "DEGRADATION OF POLYAMIDE/POLYURETHANE TEXTILE BLEND BY STREPTOMYCES SP. R1",
pages = "96-96",
url = "https://hdl.handle.net/21.15107/rcub_imagine_2371"
}
Janković, V., Pantelić, B., Jeremić, S., Radetić, M., Marković, D., Kalogirou, C.,& Ilić-Tomić, T.. (2024). DEGRADATION OF POLYAMIDE/POLYURETHANE TEXTILE BLEND BY STREPTOMYCES SP. R1. in XIII Congress of microbiologists of Serbia: From biotechnology to human and planetary health
Serbian Society for Microbiology., 96-96.
https://hdl.handle.net/21.15107/rcub_imagine_2371
Janković V, Pantelić B, Jeremić S, Radetić M, Marković D, Kalogirou C, Ilić-Tomić T. DEGRADATION OF POLYAMIDE/POLYURETHANE TEXTILE BLEND BY STREPTOMYCES SP. R1. in XIII Congress of microbiologists of Serbia: From biotechnology to human and planetary health. 2024;:96-96.
https://hdl.handle.net/21.15107/rcub_imagine_2371 .
Janković, Vukašin, Pantelić, Brana, Jeremić, Sanja, Radetić, Maja, Marković, Darka, Kalogirou, Charalampia, Ilić-Tomić, Tatjana, "DEGRADATION OF POLYAMIDE/POLYURETHANE TEXTILE BLEND BY STREPTOMYCES SP. R1" in XIII Congress of microbiologists of Serbia: From biotechnology to human and planetary health (2024):96-96,
https://hdl.handle.net/21.15107/rcub_imagine_2371 .

Enhanced enzymatic depolymerization of polylactic acid (PLA) through plasma pretreatment and subsequent conversion to biopolymer

Milovanović, Jelena; Nenadović, Marija; Pantelić, Brana; Ponjavić, Marijana; Sourkouni, Georgia; Kalogirou, Charalampia; Argirusis, Christos; Nikodinović-Runić, Jasmina

(European Society of Applied Biocatalysis, 2023)

TY  - CONF
AU  - Milovanović, Jelena
AU  - Nenadović, Marija
AU  - Pantelić, Brana
AU  - Ponjavić,  Marijana
AU  - Sourkouni, Georgia
AU  - Kalogirou, Charalampia
AU  - Argirusis, Christos
AU  - Nikodinović-Runić, Jasmina
PY  - 2023
UR  - https://esabweb.org/E_CONGRESS/Poster+Programme/Day/Online/All+day/Enhanced+enzymatic+depolymerization+of+polylactic+acid+%28PLA%29+through+plasma+pretreatment+and+subsequent+conversion+to+biopolymer.html
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/2232
AB  - Polylactic acid (PLA) serves as a bio-based alternative to fossil-based single-use plastics, biodegrading at high temperatures (58°C) and humidity during industrial composting. Despite enzymes' ability to catalyze reactions at near-ambient temperatures, polymer rigidity can impede efficient depolymerization. To address these challenges, we conducted a study of enzymatic PLA degradation at 42°C combined with green plasma pretreatment to help disrupt the crystalline regions within the polymer. Here we report the effect of length of plasma pretreatment on the rate of PLA degradation by enzyme mix containing commercial enzymes with reported PLA degrading activity. Results indicate that a 5-minute plasma pretreatment significantly enhances enzymatic degradation, with a 16% weight loss achieved in 4 weeks—a two-fold increase compared to untreated PLA. Furthermore, we report the valorization of PLA into bacterial nanocellulose after enzymatic hydrolysis of the samples.
PB  - European Society of Applied Biocatalysis
C3  - ESAB E-Congress
T1  - Enhanced enzymatic depolymerization of polylactic acid (PLA) through plasma pretreatment and subsequent conversion to biopolymer
UR  - https://hdl.handle.net/21.15107/rcub_imagine_2232
ER  - 
@conference{
author = "Milovanović, Jelena and Nenadović, Marija and Pantelić, Brana and Ponjavić,  Marijana and Sourkouni, Georgia and Kalogirou, Charalampia and Argirusis, Christos and Nikodinović-Runić, Jasmina",
year = "2023",
abstract = "Polylactic acid (PLA) serves as a bio-based alternative to fossil-based single-use plastics, biodegrading at high temperatures (58°C) and humidity during industrial composting. Despite enzymes' ability to catalyze reactions at near-ambient temperatures, polymer rigidity can impede efficient depolymerization. To address these challenges, we conducted a study of enzymatic PLA degradation at 42°C combined with green plasma pretreatment to help disrupt the crystalline regions within the polymer. Here we report the effect of length of plasma pretreatment on the rate of PLA degradation by enzyme mix containing commercial enzymes with reported PLA degrading activity. Results indicate that a 5-minute plasma pretreatment significantly enhances enzymatic degradation, with a 16% weight loss achieved in 4 weeks—a two-fold increase compared to untreated PLA. Furthermore, we report the valorization of PLA into bacterial nanocellulose after enzymatic hydrolysis of the samples.",
publisher = "European Society of Applied Biocatalysis",
journal = "ESAB E-Congress",
title = "Enhanced enzymatic depolymerization of polylactic acid (PLA) through plasma pretreatment and subsequent conversion to biopolymer",
url = "https://hdl.handle.net/21.15107/rcub_imagine_2232"
}
Milovanović, J., Nenadović, M., Pantelić, B., Ponjavić, M., Sourkouni, G., Kalogirou, C., Argirusis, C.,& Nikodinović-Runić, J.. (2023). Enhanced enzymatic depolymerization of polylactic acid (PLA) through plasma pretreatment and subsequent conversion to biopolymer. in ESAB E-Congress
European Society of Applied Biocatalysis..
https://hdl.handle.net/21.15107/rcub_imagine_2232
Milovanović J, Nenadović M, Pantelić B, Ponjavić M, Sourkouni G, Kalogirou C, Argirusis C, Nikodinović-Runić J. Enhanced enzymatic depolymerization of polylactic acid (PLA) through plasma pretreatment and subsequent conversion to biopolymer. in ESAB E-Congress. 2023;.
https://hdl.handle.net/21.15107/rcub_imagine_2232 .
Milovanović, Jelena, Nenadović, Marija, Pantelić, Brana, Ponjavić,  Marijana, Sourkouni, Georgia, Kalogirou, Charalampia, Argirusis, Christos, Nikodinović-Runić, Jasmina, "Enhanced enzymatic depolymerization of polylactic acid (PLA) through plasma pretreatment and subsequent conversion to biopolymer" in ESAB E-Congress (2023),
https://hdl.handle.net/21.15107/rcub_imagine_2232 .

Study of PLA pre-treatment, enzymatic and model-compost degradation, and valorization of degradation products to bacterial nanocellulose

Sourkouni, Georgia; Jeremić, Sanja; Kalogirou, Charalampia; Höfft, Oliver; Nenadović, Marija; Janković, Vukašin; Rajasekaran, Divya; Pandis, Pavlos; Padamati, Ramesh; Nikodinović-Runić, Jasmina; Argirusis, Christos

(2023)

TY  - JOUR
AU  - Sourkouni, Georgia
AU  - Jeremić, Sanja
AU  - Kalogirou, Charalampia
AU  - Höfft, Oliver
AU  - Nenadović, Marija
AU  - Janković, Vukašin
AU  - Rajasekaran, Divya
AU  - Pandis, Pavlos
AU  - Padamati, Ramesh
AU  - Nikodinović-Runić, Jasmina
AU  - Argirusis, Christos
PY  - 2023
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1804
AB  - It is well acknowledged that microplastics are a major environmental problem and that the use of plastics, both petro- and bio- based, should be reduced. Nevertheless, it is also a necessity to reduce the amount of the already spread plastics. These cannot be easily degraded in the nature and accumulate in the food supply chain with major danger for animals and human life. It has been shown in the literature that advanced oxidation processes (AOPs) modify the surface of polylactic acid (PLA) materials in a way that bacteria more efficiently dock on their surface and eventually degrade them. In the present work we investigated the influence of different AOPs (ultrasounds, ultraviolet irradiation, and their combination) on the biodegradability of PLA films treated for different times between 1 and 6 h. The pre-treated samples have been degraded using a home model compost as well as a cocktail of commercial enzymes at mesophilic temperatures (37 °C and 42 °C, respectively). Degradation degree has been measured and degradation products have been identified. Excellent degradation of PLA films has been achieved with enzyme cocktail containing commercial alkaline proteases and lipases of up to 90% weight loss. For the first time, we also report valorization of PLA into bacterial nanocellulose after enzymatic hydrolysis of the samples.
T2  - World Journal of Microbiology and Biotechnology
T2  - World Journal of Microbiology and BiotechnologyWorld J Microbiol Biotechnol
T1  - Study of PLA pre-treatment, enzymatic and model-compost degradation, and valorization of degradation products to bacterial nanocellulose
IS  - 6
SP  - 161
VL  - 39
DO  - 10.1007/s11274-023-03605-4
ER  - 
@article{
author = "Sourkouni, Georgia and Jeremić, Sanja and Kalogirou, Charalampia and Höfft, Oliver and Nenadović, Marija and Janković, Vukašin and Rajasekaran, Divya and Pandis, Pavlos and Padamati, Ramesh and Nikodinović-Runić, Jasmina and Argirusis, Christos",
year = "2023",
abstract = "It is well acknowledged that microplastics are a major environmental problem and that the use of plastics, both petro- and bio- based, should be reduced. Nevertheless, it is also a necessity to reduce the amount of the already spread plastics. These cannot be easily degraded in the nature and accumulate in the food supply chain with major danger for animals and human life. It has been shown in the literature that advanced oxidation processes (AOPs) modify the surface of polylactic acid (PLA) materials in a way that bacteria more efficiently dock on their surface and eventually degrade them. In the present work we investigated the influence of different AOPs (ultrasounds, ultraviolet irradiation, and their combination) on the biodegradability of PLA films treated for different times between 1 and 6 h. The pre-treated samples have been degraded using a home model compost as well as a cocktail of commercial enzymes at mesophilic temperatures (37 °C and 42 °C, respectively). Degradation degree has been measured and degradation products have been identified. Excellent degradation of PLA films has been achieved with enzyme cocktail containing commercial alkaline proteases and lipases of up to 90% weight loss. For the first time, we also report valorization of PLA into bacterial nanocellulose after enzymatic hydrolysis of the samples.",
journal = "World Journal of Microbiology and Biotechnology, World Journal of Microbiology and BiotechnologyWorld J Microbiol Biotechnol",
title = "Study of PLA pre-treatment, enzymatic and model-compost degradation, and valorization of degradation products to bacterial nanocellulose",
number = "6",
pages = "161",
volume = "39",
doi = "10.1007/s11274-023-03605-4"
}
Sourkouni, G., Jeremić, S., Kalogirou, C., Höfft, O., Nenadović, M., Janković, V., Rajasekaran, D., Pandis, P., Padamati, R., Nikodinović-Runić, J.,& Argirusis, C.. (2023). Study of PLA pre-treatment, enzymatic and model-compost degradation, and valorization of degradation products to bacterial nanocellulose. in World Journal of Microbiology and Biotechnology, 39(6), 161.
https://doi.org/10.1007/s11274-023-03605-4
Sourkouni G, Jeremić S, Kalogirou C, Höfft O, Nenadović M, Janković V, Rajasekaran D, Pandis P, Padamati R, Nikodinović-Runić J, Argirusis C. Study of PLA pre-treatment, enzymatic and model-compost degradation, and valorization of degradation products to bacterial nanocellulose. in World Journal of Microbiology and Biotechnology. 2023;39(6):161.
doi:10.1007/s11274-023-03605-4 .
Sourkouni, Georgia, Jeremić, Sanja, Kalogirou, Charalampia, Höfft, Oliver, Nenadović, Marija, Janković, Vukašin, Rajasekaran, Divya, Pandis, Pavlos, Padamati, Ramesh, Nikodinović-Runić, Jasmina, Argirusis, Christos, "Study of PLA pre-treatment, enzymatic and model-compost degradation, and valorization of degradation products to bacterial nanocellulose" in World Journal of Microbiology and Biotechnology, 39, no. 6 (2023):161,
https://doi.org/10.1007/s11274-023-03605-4 . .
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