TY  - JOUR
AU  - Cabrera-Barjas, Gustavo
AU  - Albornoz, Karin
AU  - Belchi, Maria Dolores Lopez
AU  - Giordano, Ady
AU  - Bravo-Arrepol, Gaston
AU  - Moya-Elizondo, Ernesto
AU  - Martin, Juan San
AU  - Valdes, Oscar
AU  - Nešić, Aleksandra
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12870
AB  - In this work, chitosan films loaded with gallic acid and different content of chitin nanofibers were prepared and subjected to different characterization techniques. The results showed that the inclusion of gallic acid to chitosan films caused moderate decrease in water vapor permeability (by 29 %) and increased tensile strength of films (by 169 %) in comparison to the neat chitosan films. Furthermore, it was found that the addition of chitin nanofibers up to 30 % into chitosan/gallic acid films additionally improved tensile strength (by 474 %) and reduced plasticity of films (by 171 %), when compared to the chitosan/gallic acid films. Increased concentration of chitin nanofibers in films reduced the overall water vapor permeability of films by 51 %. In addition, gallic acid and chitin nanofibers had synergic effect on high chitosan film's antioxidant and antifungal activity toward Botrytis cinerea (both above 95 %). Finally, chitosan/gallic acid/chitin nanofibers films reduced decay incidence of strawberries, increased total soluble solid content, and promoted high production of some polyphenols during cold storage, in comparison to the control chitosan films and uncoated strawberry samples. Hence, these results suggest that chitosan/gallic acid/chitin nanofibers can present eco-sustainable approach for preservation of strawberries, giving them additional nutritional value.
T2  - International Journal of Biological Macromolecules
T1  - Influence of chitin nanofibers and gallic acid on physical-chemical and biological performances of chitosan-based films
VL  - 263, Part 1
SP  - 130159
DO  - 10.1016/j.ijbiomac.2024.130159
ER  - 

@article{
author = "Cabrera-Barjas, Gustavo and Albornoz, Karin and Belchi, Maria Dolores Lopez and Giordano, Ady and Bravo-Arrepol, Gaston and Moya-Elizondo, Ernesto and Martin, Juan San and Valdes, Oscar and Nešić, Aleksandra",
year = "2024",
abstract = "In this work, chitosan films loaded with gallic acid and different content of chitin nanofibers were prepared and subjected to different characterization techniques. The results showed that the inclusion of gallic acid to chitosan films caused moderate decrease in water vapor permeability (by 29 %) and increased tensile strength of films (by 169 %) in comparison to the neat chitosan films. Furthermore, it was found that the addition of chitin nanofibers up to 30 % into chitosan/gallic acid films additionally improved tensile strength (by 474 %) and reduced plasticity of films (by 171 %), when compared to the chitosan/gallic acid films. Increased concentration of chitin nanofibers in films reduced the overall water vapor permeability of films by 51 %. In addition, gallic acid and chitin nanofibers had synergic effect on high chitosan film's antioxidant and antifungal activity toward Botrytis cinerea (both above 95 %). Finally, chitosan/gallic acid/chitin nanofibers films reduced decay incidence of strawberries, increased total soluble solid content, and promoted high production of some polyphenols during cold storage, in comparison to the control chitosan films and uncoated strawberry samples. Hence, these results suggest that chitosan/gallic acid/chitin nanofibers can present eco-sustainable approach for preservation of strawberries, giving them additional nutritional value.",
journal = "International Journal of Biological Macromolecules",
title = "Influence of chitin nanofibers and gallic acid on physical-chemical and biological performances of chitosan-based films",
volume = "263, Part 1",
pages = "130159",
doi = "10.1016/j.ijbiomac.2024.130159"
}

Cabrera-Barjas, G., Albornoz, K., Belchi, M. D. L., Giordano, A., Bravo-Arrepol, G., Moya-Elizondo, E., Martin, J. S., Valdes, O.,& Nešić, A.. (2024). Influence of chitin nanofibers and gallic acid on physical-chemical and biological performances of chitosan-based films. in International Journal of Biological Macromolecules, 263, Part 1, 130159.
https://doi.org/10.1016/j.ijbiomac.2024.130159

Cabrera-Barjas G, Albornoz K, Belchi MDL, Giordano A, Bravo-Arrepol G, Moya-Elizondo E, Martin JS, Valdes O, Nešić A. Influence of chitin nanofibers and gallic acid on physical-chemical and biological performances of chitosan-based films. in International Journal of Biological Macromolecules. 2024;263, Part 1:130159.
doi:10.1016/j.ijbiomac.2024.130159 .

Cabrera-Barjas, Gustavo, Albornoz, Karin, Belchi, Maria Dolores Lopez, Giordano, Ady, Bravo-Arrepol, Gaston, Moya-Elizondo, Ernesto, Martin, Juan San, Valdes, Oscar, Nešić, Aleksandra, "Influence of chitin nanofibers and gallic acid on physical-chemical and biological performances of chitosan-based films" in International Journal of Biological Macromolecules, 263, Part 1 (2024):130159,
https://doi.org/10.1016/j.ijbiomac.2024.130159 . .

TY  - JOUR
AU  - Cabrera-Barjas, Gustavo
AU  - Jimenez, Romel
AU  - Romero, Romina
AU  - Valdes, Oscar
AU  - Nešić, Aleksandra
AU  - Hernández-García, Ruber
AU  - Neira, Andrónico
AU  - Alejandro-Martín, Serguei
AU  - de la Torre, Alexander F.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10773
AB  - In this work, chitin, as a biobased polymer, is used as a precursor to obtain a phosphorylated derivatives. The influence of the different degree of phosphorylation in chitin on pyrolysis pattern was investigated. In order to understand the pyrolysis mechanism and the potential application of phosphorylated chitins, the samples were pyrolyzed at different temperatures and analyzed by FTIR, SEM, and Py-GC/MS analysis. Moreover, the thermal degradation and the evolved gases during chitin degradation and its derivatives were measured. The results showed that phosphorylation of chitin decreased the thermal stability of biopolymer and significantly changed the pattern of pyrolysis compared to neat chitin. The production of long-chain hydrocarbons was detected during pyrolysis of phosphorylated chitin, whereas this was not the case with raw chitin. Those two effects were more pronounced as the degree of phosphorylation increased. Chitin with the degree of phosphorylation (DS 1.35) exhibited the highest selectivity (91 %) towards production of long-chain hydrocarbons (C12-C17) at 500 °C. Moreover, the obtained results allowed to propose, for the first time, the mechanism of pyrolysis of phosphorylated chitin.
T2  - International Journal of Biological Macromolecules
T1  - Value-added long-chain aliphatic compounds obtained through pyrolysis of phosphorylated chitin
VL  - 238
SP  - 124130
DO  - 10.1016/j.ijbiomac.2023.124130
ER  - 

@article{
author = "Cabrera-Barjas, Gustavo and Jimenez, Romel and Romero, Romina and Valdes, Oscar and Nešić, Aleksandra and Hernández-García, Ruber and Neira, Andrónico and Alejandro-Martín, Serguei and de la Torre, Alexander F.",
year = "2023",
abstract = "In this work, chitin, as a biobased polymer, is used as a precursor to obtain a phosphorylated derivatives. The influence of the different degree of phosphorylation in chitin on pyrolysis pattern was investigated. In order to understand the pyrolysis mechanism and the potential application of phosphorylated chitins, the samples were pyrolyzed at different temperatures and analyzed by FTIR, SEM, and Py-GC/MS analysis. Moreover, the thermal degradation and the evolved gases during chitin degradation and its derivatives were measured. The results showed that phosphorylation of chitin decreased the thermal stability of biopolymer and significantly changed the pattern of pyrolysis compared to neat chitin. The production of long-chain hydrocarbons was detected during pyrolysis of phosphorylated chitin, whereas this was not the case with raw chitin. Those two effects were more pronounced as the degree of phosphorylation increased. Chitin with the degree of phosphorylation (DS 1.35) exhibited the highest selectivity (91 %) towards production of long-chain hydrocarbons (C12-C17) at 500 °C. Moreover, the obtained results allowed to propose, for the first time, the mechanism of pyrolysis of phosphorylated chitin.",
journal = "International Journal of Biological Macromolecules",
title = "Value-added long-chain aliphatic compounds obtained through pyrolysis of phosphorylated chitin",
volume = "238",
pages = "124130",
doi = "10.1016/j.ijbiomac.2023.124130"
}

Cabrera-Barjas, G., Jimenez, R., Romero, R., Valdes, O., Nešić, A., Hernández-García, R., Neira, A., Alejandro-Martín, S.,& de la Torre, A. F.. (2023). Value-added long-chain aliphatic compounds obtained through pyrolysis of phosphorylated chitin. in International Journal of Biological Macromolecules, 238, 124130.
https://doi.org/10.1016/j.ijbiomac.2023.124130

Cabrera-Barjas G, Jimenez R, Romero R, Valdes O, Nešić A, Hernández-García R, Neira A, Alejandro-Martín S, de la Torre AF. Value-added long-chain aliphatic compounds obtained through pyrolysis of phosphorylated chitin. in International Journal of Biological Macromolecules. 2023;238:124130.
doi:10.1016/j.ijbiomac.2023.124130 .

Cabrera-Barjas, Gustavo, Jimenez, Romel, Romero, Romina, Valdes, Oscar, Nešić, Aleksandra, Hernández-García, Ruber, Neira, Andrónico, Alejandro-Martín, Serguei, de la Torre, Alexander F., "Value-added long-chain aliphatic compounds obtained through pyrolysis of phosphorylated chitin" in International Journal of Biological Macromolecules, 238 (2023):124130,
https://doi.org/10.1016/j.ijbiomac.2023.124130 . .

TY  - JOUR
AU  - Figueroa, Fabian A.
AU  - Abdala-Díaz, Roberto T.
AU  - Pérez, Claudia
AU  - Casas-Arrojo, Virginia
AU  - Nešić, Aleksandra
AU  - Tapia, Cecilia
AU  - Durán, Carla
AU  - Valdes, Oscar
AU  - Parra, Carolina
AU  - Bravo-Arrepol, Gastón
AU  - Soto, Luis
AU  - Becerra, José
AU  - Cabrera-Barjas, Gustavo
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10388
AB  - Codium bernabei is a green alga that grows on Chilean coasts. The composition of its structural polysaccharides is still unknown. Hence, the aim of this work is to isolate and characterize the hot water extracted polysaccharide fractions. For this purpose, the water extracts were further precipitated in alcohol (TPs) and acid media (APs), respectively. Both fractions were characterized using different physicochemical techniques such as GC-MS, GPC, FTIR, TGA, and SEM. It is confirmed that the extracted fractions are mainly made of sulfated galactan unit, with a degree of sulfation of 19.3% (TPs) and 17.4% (ATs) and a protein content of 3.5% in APs and 15.6% in TPs. Other neutral sugars such as xylose, glucose, galactose, fucose, mannose, and arabinose were found in a molar ratio (0.05:0.6:1.0:0.02:0.14:0.11) for TPs and (0.05:0.31:1.0:0.03:0.1:0.13) for ATs. The molecular weight of the polysaccharide samples was lower than 20 kDa. Both polysaccharides were thermally stable (Tonset > 190 °C) and showed antioxidant activity according to the ABTS•+ and DPPH tests, where TPs fractions had higher scavenging activity (35%) compared to the APs fractions. The PT and APTTS assays were used to measure the anticoagulant activity of the polysaccharide fractions. In general, the PT activity of the TPs and APs was not different from normal plasma values. The exception was the TPs treatment at 1000 µg mL−1 concentration. The APTTS test revealed that clotting time for both polysaccharides was prolonged regarding normal values at 1000 µg mL−1. Finally, the antitumor test in colorectal carcinoma (HTC-116) cell line, breast cancer (MCF-7) and human leukemia (HL-60) cell lines showed the cytotoxic effect of TPs and APs. Those results suggest the potential biotechnological application of sulfate galactan polysaccharides isolated from a Chilean marine resource.
T2  - Marine Drugs
T1  - Sulfated Polysaccharide Extracted from the Green Algae Codium bernabei: Physicochemical Characterization and Antioxidant, Anticoagulant and Antitumor Activity
VL  - 20
IS  - 7
SP  - 458
DO  - 10.3390/md20070458
ER  - 

@article{
author = "Figueroa, Fabian A. and Abdala-Díaz, Roberto T. and Pérez, Claudia and Casas-Arrojo, Virginia and Nešić, Aleksandra and Tapia, Cecilia and Durán, Carla and Valdes, Oscar and Parra, Carolina and Bravo-Arrepol, Gastón and Soto, Luis and Becerra, José and Cabrera-Barjas, Gustavo",
year = "2022",
abstract = "Codium bernabei is a green alga that grows on Chilean coasts. The composition of its structural polysaccharides is still unknown. Hence, the aim of this work is to isolate and characterize the hot water extracted polysaccharide fractions. For this purpose, the water extracts were further precipitated in alcohol (TPs) and acid media (APs), respectively. Both fractions were characterized using different physicochemical techniques such as GC-MS, GPC, FTIR, TGA, and SEM. It is confirmed that the extracted fractions are mainly made of sulfated galactan unit, with a degree of sulfation of 19.3% (TPs) and 17.4% (ATs) and a protein content of 3.5% in APs and 15.6% in TPs. Other neutral sugars such as xylose, glucose, galactose, fucose, mannose, and arabinose were found in a molar ratio (0.05:0.6:1.0:0.02:0.14:0.11) for TPs and (0.05:0.31:1.0:0.03:0.1:0.13) for ATs. The molecular weight of the polysaccharide samples was lower than 20 kDa. Both polysaccharides were thermally stable (Tonset > 190 °C) and showed antioxidant activity according to the ABTS•+ and DPPH tests, where TPs fractions had higher scavenging activity (35%) compared to the APs fractions. The PT and APTTS assays were used to measure the anticoagulant activity of the polysaccharide fractions. In general, the PT activity of the TPs and APs was not different from normal plasma values. The exception was the TPs treatment at 1000 µg mL−1 concentration. The APTTS test revealed that clotting time for both polysaccharides was prolonged regarding normal values at 1000 µg mL−1. Finally, the antitumor test in colorectal carcinoma (HTC-116) cell line, breast cancer (MCF-7) and human leukemia (HL-60) cell lines showed the cytotoxic effect of TPs and APs. Those results suggest the potential biotechnological application of sulfate galactan polysaccharides isolated from a Chilean marine resource.",
journal = "Marine Drugs",
title = "Sulfated Polysaccharide Extracted from the Green Algae Codium bernabei: Physicochemical Characterization and Antioxidant, Anticoagulant and Antitumor Activity",
volume = "20",
number = "7",
pages = "458",
doi = "10.3390/md20070458"
}

Figueroa, F. A., Abdala-Díaz, R. T., Pérez, C., Casas-Arrojo, V., Nešić, A., Tapia, C., Durán, C., Valdes, O., Parra, C., Bravo-Arrepol, G., Soto, L., Becerra, J.,& Cabrera-Barjas, G.. (2022). Sulfated Polysaccharide Extracted from the Green Algae Codium bernabei: Physicochemical Characterization and Antioxidant, Anticoagulant and Antitumor Activity. in Marine Drugs, 20(7), 458.
https://doi.org/10.3390/md20070458

Figueroa FA, Abdala-Díaz RT, Pérez C, Casas-Arrojo V, Nešić A, Tapia C, Durán C, Valdes O, Parra C, Bravo-Arrepol G, Soto L, Becerra J, Cabrera-Barjas G. Sulfated Polysaccharide Extracted from the Green Algae Codium bernabei: Physicochemical Characterization and Antioxidant, Anticoagulant and Antitumor Activity. in Marine Drugs. 2022;20(7):458.
doi:10.3390/md20070458 .

Figueroa, Fabian A., Abdala-Díaz, Roberto T., Pérez, Claudia, Casas-Arrojo, Virginia, Nešić, Aleksandra, Tapia, Cecilia, Durán, Carla, Valdes, Oscar, Parra, Carolina, Bravo-Arrepol, Gastón, Soto, Luis, Becerra, José, Cabrera-Barjas, Gustavo, "Sulfated Polysaccharide Extracted from the Green Algae Codium bernabei: Physicochemical Characterization and Antioxidant, Anticoagulant and Antitumor Activity" in Marine Drugs, 20, no. 7 (2022):458,
https://doi.org/10.3390/md20070458 . .

TY  - JOUR
AU  - Cabrera-Barjas, Gustavo
AU  - González, Cristian
AU  - Nešić, Aleksandra
AU  - Marrugo, Kelly P
AU  - Gómez, Oscar
AU  - Delattre, Cédric
AU  - Valdes, Oscar
AU  - Yin, Heng
AU  - Bravo, Gaston
AU  - Cea, Juan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9628
AB  - β-chitin was isolated from marine waste, giant Humboldt squid Dosidicus gigas, and further converted to nanofibers by use of a collider machine under acidic conditions (pH 3). The FTIR, TGA, and NMR analysis confirmed the efficient extraction of β-chitin. The SEM, TEM, and XRD characterization results verified that β-chitin crystalline structure were maintained after mechanical treatment. The mean particle size of β-chitin nanofibers was in the range between 10 and 15 nm, according to the TEM analysis. In addition, the β-chitin nanofibers were converted into films by the simple solvent-casting and drying process at 60 °C. The obtained films had high lightness, which was evidenced by the CIELAB color test. Moreover, the films showed the medium swelling degree (250–290%) in aqueous solutions of different pH and good mechanical resistance in the range between 4 and 17 MPa, depending on film thickness. The results obtained in this work show that marine waste can be efficiently converted to biomaterial by use of mild extractive conditions and simple mechanical treatment, offering great potential for the future development of sustainable multifunctional materials for various industrial applications such as food packaging, agriculture, and/or wound dressing.
T2  - Marine Drugs
T1  - Utilization of Marine Waste to Obtain β-Chitin Nanofibers and Films from Giant Humboldt Squid Dosidicus gigas
VL  - 19
IS  - 4
SP  - 184
DO  - 10.3390/md19040184
ER  - 

@article{
author = "Cabrera-Barjas, Gustavo and González, Cristian and Nešić, Aleksandra and Marrugo, Kelly P and Gómez, Oscar and Delattre, Cédric and Valdes, Oscar and Yin, Heng and Bravo, Gaston and Cea, Juan",
year = "2021",
abstract = "β-chitin was isolated from marine waste, giant Humboldt squid Dosidicus gigas, and further converted to nanofibers by use of a collider machine under acidic conditions (pH 3). The FTIR, TGA, and NMR analysis confirmed the efficient extraction of β-chitin. The SEM, TEM, and XRD characterization results verified that β-chitin crystalline structure were maintained after mechanical treatment. The mean particle size of β-chitin nanofibers was in the range between 10 and 15 nm, according to the TEM analysis. In addition, the β-chitin nanofibers were converted into films by the simple solvent-casting and drying process at 60 °C. The obtained films had high lightness, which was evidenced by the CIELAB color test. Moreover, the films showed the medium swelling degree (250–290%) in aqueous solutions of different pH and good mechanical resistance in the range between 4 and 17 MPa, depending on film thickness. The results obtained in this work show that marine waste can be efficiently converted to biomaterial by use of mild extractive conditions and simple mechanical treatment, offering great potential for the future development of sustainable multifunctional materials for various industrial applications such as food packaging, agriculture, and/or wound dressing.",
journal = "Marine Drugs",
title = "Utilization of Marine Waste to Obtain β-Chitin Nanofibers and Films from Giant Humboldt Squid Dosidicus gigas",
volume = "19",
number = "4",
pages = "184",
doi = "10.3390/md19040184"
}

Cabrera-Barjas, G., González, C., Nešić, A., Marrugo, K. P., Gómez, O., Delattre, C., Valdes, O., Yin, H., Bravo, G.,& Cea, J.. (2021). Utilization of Marine Waste to Obtain β-Chitin Nanofibers and Films from Giant Humboldt Squid Dosidicus gigas. in Marine Drugs, 19(4), 184.
https://doi.org/10.3390/md19040184

Cabrera-Barjas G, González C, Nešić A, Marrugo KP, Gómez O, Delattre C, Valdes O, Yin H, Bravo G, Cea J. Utilization of Marine Waste to Obtain β-Chitin Nanofibers and Films from Giant Humboldt Squid Dosidicus gigas. in Marine Drugs. 2021;19(4):184.
doi:10.3390/md19040184 .

Cabrera-Barjas, Gustavo, González, Cristian, Nešić, Aleksandra, Marrugo, Kelly P, Gómez, Oscar, Delattre, Cédric, Valdes, Oscar, Yin, Heng, Bravo, Gaston, Cea, Juan, "Utilization of Marine Waste to Obtain β-Chitin Nanofibers and Films from Giant Humboldt Squid Dosidicus gigas" in Marine Drugs, 19, no. 4 (2021):184,
https://doi.org/10.3390/md19040184 . .

TY  - JOUR
AU  - Cabrera-Barjas, Gustavo
AU  - Nešić, Aleksandra
AU  - Bravo-Arrepol, Gaston
AU  - Rodríguez-Llamazares, Saddys
AU  - Valdés, Oscar
AU  - Banerjee, Aparna
AU  - Castaño, Johanna
AU  - Delattre, Cédric
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10100
AB  - This study investigated the biocomposite pectin films enriched with murta (Ugni molinae T.) seed polyphenolic extract and reinforced by chitin nanofiber. The structural, morphological, mechanical, barrier, colorimetric, and antioxidant activity of films were evaluated. The obtained data clearly demonstrated that the addition of murta seed extract and the high load of chitin nanofibers (50%) provided more cohesive and dense morphology of films and improved the mechanical resistance and water vapor barrier in comparison to the control pectin film. The antioxidant activity ranged between 71% and 86%, depending on the film formulation and concentration of chitin nanofibers. The presented results highlight the potential use of chitin nanofibers and murta seed extract in the pectin matrix to be applied in functional food coatings and packaging, as a sustainable solution.
T2  - Molecules
T1  - Bioactive Pectin-Murta (Ugni molinae T.) Seed Extract Films Reinforced with Chitin Fibers
VL  - 26
IS  - 24
SP  - 7477
DO  - 10.3390/molecules26247477
ER  - 

@article{
author = "Cabrera-Barjas, Gustavo and Nešić, Aleksandra and Bravo-Arrepol, Gaston and Rodríguez-Llamazares, Saddys and Valdés, Oscar and Banerjee, Aparna and Castaño, Johanna and Delattre, Cédric",
year = "2021",
abstract = "This study investigated the biocomposite pectin films enriched with murta (Ugni molinae T.) seed polyphenolic extract and reinforced by chitin nanofiber. The structural, morphological, mechanical, barrier, colorimetric, and antioxidant activity of films were evaluated. The obtained data clearly demonstrated that the addition of murta seed extract and the high load of chitin nanofibers (50%) provided more cohesive and dense morphology of films and improved the mechanical resistance and water vapor barrier in comparison to the control pectin film. The antioxidant activity ranged between 71% and 86%, depending on the film formulation and concentration of chitin nanofibers. The presented results highlight the potential use of chitin nanofibers and murta seed extract in the pectin matrix to be applied in functional food coatings and packaging, as a sustainable solution.",
journal = "Molecules",
title = "Bioactive Pectin-Murta (Ugni molinae T.) Seed Extract Films Reinforced with Chitin Fibers",
volume = "26",
number = "24",
pages = "7477",
doi = "10.3390/molecules26247477"
}

Cabrera-Barjas, G., Nešić, A., Bravo-Arrepol, G., Rodríguez-Llamazares, S., Valdés, O., Banerjee, A., Castaño, J.,& Delattre, C.. (2021). Bioactive Pectin-Murta (Ugni molinae T.) Seed Extract Films Reinforced with Chitin Fibers. in Molecules, 26(24), 7477.
https://doi.org/10.3390/molecules26247477

Cabrera-Barjas G, Nešić A, Bravo-Arrepol G, Rodríguez-Llamazares S, Valdés O, Banerjee A, Castaño J, Delattre C. Bioactive Pectin-Murta (Ugni molinae T.) Seed Extract Films Reinforced with Chitin Fibers. in Molecules. 2021;26(24):7477.
doi:10.3390/molecules26247477 .

Cabrera-Barjas, Gustavo, Nešić, Aleksandra, Bravo-Arrepol, Gaston, Rodríguez-Llamazares, Saddys, Valdés, Oscar, Banerjee, Aparna, Castaño, Johanna, Delattre, Cédric, "Bioactive Pectin-Murta (Ugni molinae T.) Seed Extract Films Reinforced with Chitin Fibers" in Molecules, 26, no. 24 (2021):7477,
https://doi.org/10.3390/molecules26247477 . .

TY  - JOUR
AU  - Cabrera-Barjas, Gustavo
AU  - Radovanović, Neda
AU  - Arrepol, Gaston Bravo
AU  - de la Torre, Alexander F.
AU  - Valdes, Oscar
AU  - Nešić, Aleksandra
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10700
AB  - The efficient use of waste from food processing industry is one of the innovative approaches within sustainable development, because it can be transferred into added value products, which could improve economic, energetic and environmental sectors. In this context, the squid pen waste from seafood industry was used as raw material to obtain nanofibrous beta-chitin films. In order to extend functionality of obtained films, elderberry extract obtained from biomass was added at different concentrations. The tensile strength of chitin-elderberry extract films was improved by 52%, elongation at break by 153% and water vapor barrier by 65%. The obtained material showed distinct color change when subjected to acidic or basic solutions. It was proven by CIELab color analysis that all color changes could be easily perceived visually. In addition, the obtained nanofibrous film was successfully used to monitor the freshness of Hake fish. Namely, when the film was introduced in a package that contained fresh fish, its color was efficiently changed within the time during the storage at 4 degrees C. The obtained results demonstrated that food processing waste could be efficiently valorized, and could give sustainable food package design as a spoilage indicator of high protein food.
T2  - International Journal of Biological Macromolecules
T1  - Valorization of food waste to produce intelligent nanofibrous beta-chitin films
VL  - 186
SP  - 92
EP  - 99
DO  - 10.1016/j.ijbiomac.2021.07.045
ER  - 

@article{
author = "Cabrera-Barjas, Gustavo and Radovanović, Neda and Arrepol, Gaston Bravo and de la Torre, Alexander F. and Valdes, Oscar and Nešić, Aleksandra",
year = "2021",
abstract = "The efficient use of waste from food processing industry is one of the innovative approaches within sustainable development, because it can be transferred into added value products, which could improve economic, energetic and environmental sectors. In this context, the squid pen waste from seafood industry was used as raw material to obtain nanofibrous beta-chitin films. In order to extend functionality of obtained films, elderberry extract obtained from biomass was added at different concentrations. The tensile strength of chitin-elderberry extract films was improved by 52%, elongation at break by 153% and water vapor barrier by 65%. The obtained material showed distinct color change when subjected to acidic or basic solutions. It was proven by CIELab color analysis that all color changes could be easily perceived visually. In addition, the obtained nanofibrous film was successfully used to monitor the freshness of Hake fish. Namely, when the film was introduced in a package that contained fresh fish, its color was efficiently changed within the time during the storage at 4 degrees C. The obtained results demonstrated that food processing waste could be efficiently valorized, and could give sustainable food package design as a spoilage indicator of high protein food.",
journal = "International Journal of Biological Macromolecules",
title = "Valorization of food waste to produce intelligent nanofibrous beta-chitin films",
volume = "186",
pages = "92-99",
doi = "10.1016/j.ijbiomac.2021.07.045"
}

Cabrera-Barjas, G., Radovanović, N., Arrepol, G. B., de la Torre, A. F., Valdes, O.,& Nešić, A.. (2021). Valorization of food waste to produce intelligent nanofibrous beta-chitin films. in International Journal of Biological Macromolecules, 186, 92-99.
https://doi.org/10.1016/j.ijbiomac.2021.07.045

Cabrera-Barjas G, Radovanović N, Arrepol GB, de la Torre AF, Valdes O, Nešić A. Valorization of food waste to produce intelligent nanofibrous beta-chitin films. in International Journal of Biological Macromolecules. 2021;186:92-99.
doi:10.1016/j.ijbiomac.2021.07.045 .

Cabrera-Barjas, Gustavo, Radovanović, Neda, Arrepol, Gaston Bravo, de la Torre, Alexander F., Valdes, Oscar, Nešić, Aleksandra, "Valorization of food waste to produce intelligent nanofibrous beta-chitin films" in International Journal of Biological Macromolecules, 186 (2021):92-99,
https://doi.org/10.1016/j.ijbiomac.2021.07.045 . .

TY  - JOUR
AU  - Cabrera-Barjas, Gustavo
AU  - Gallardo, Francisco
AU  - Nešić, Aleksandra
AU  - Taboada, Edelio
AU  - Marican, Adolfo
AU  - Mirabal-Gallardo, Yaneris
AU  - Avila-Salas, Fabian
AU  - Delgado, Nacarid
AU  - de Armas-Ricard, Merly
AU  - Valdes, Oscar
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10701
AB  - In this work, Aspergillus niger and Fusarium culmorum cell wall by-products were chosen as microbial sources for chitin and chitosan production. Both polysaccharides were characterized by FTIR and 13C-CPMAS NMR, but GPC analysis was only performed for chitosan. SEM-EDX analysis was performed to fungal chitosan loaded with metal ions. Chitosan extracted from both fungus had low to medium molecular weight (Mw) and degree of deacetylations (DD) ranging from 65.7-83.3%. Fungal chitosan samples were intended to be used for bioremediation applications. For this purpose, two independent absorption experiments regarding pesticide Dimethoate (DM) and heavy metal ions (Al(III), As(III), Cd(II), Cu(II), Mg(II), Mn(II), Pb(II), Zn(II), Fe(II)) in a complex mixture were carried out. An experimental design considering the solution pH, contact time and chitosan physicochemical properties (DD) were performed. The highest percentage of dimethoate pesticide and selected metal ions absorption was obtained with highest DD chitosan, the contact time of 24 h, pH 6 for metals and pH 4 for pesticide, repectively. Molecular dynamics simulation studies allowed to analyze at the molecular level the chitosan-DM interaction. A higher number of h-bonds were identified as the main interactions that stabilize the affinity of the chitosan-DM complexes. Based on our results, we suggest the use of a multipurpose fungal chitosan system for water bioremediation.
T2  - Journal of Environmental Chemical Engineering
T1  - Utilization of industrial by-product fungal biomass from Aspergillus niger and Fusarium culmorum to obtain biosorbents for removal of pesticide and metal ions from aqueous solutions
VL  - 8
IS  - 5
SP  - 104355
DO  - 10.1016/j.jece.2020.104355
ER  - 

@article{
author = "Cabrera-Barjas, Gustavo and Gallardo, Francisco and Nešić, Aleksandra and Taboada, Edelio and Marican, Adolfo and Mirabal-Gallardo, Yaneris and Avila-Salas, Fabian and Delgado, Nacarid and de Armas-Ricard, Merly and Valdes, Oscar",
year = "2020",
abstract = "In this work, Aspergillus niger and Fusarium culmorum cell wall by-products were chosen as microbial sources for chitin and chitosan production. Both polysaccharides were characterized by FTIR and 13C-CPMAS NMR, but GPC analysis was only performed for chitosan. SEM-EDX analysis was performed to fungal chitosan loaded with metal ions. Chitosan extracted from both fungus had low to medium molecular weight (Mw) and degree of deacetylations (DD) ranging from 65.7-83.3%. Fungal chitosan samples were intended to be used for bioremediation applications. For this purpose, two independent absorption experiments regarding pesticide Dimethoate (DM) and heavy metal ions (Al(III), As(III), Cd(II), Cu(II), Mg(II), Mn(II), Pb(II), Zn(II), Fe(II)) in a complex mixture were carried out. An experimental design considering the solution pH, contact time and chitosan physicochemical properties (DD) were performed. The highest percentage of dimethoate pesticide and selected metal ions absorption was obtained with highest DD chitosan, the contact time of 24 h, pH 6 for metals and pH 4 for pesticide, repectively. Molecular dynamics simulation studies allowed to analyze at the molecular level the chitosan-DM interaction. A higher number of h-bonds were identified as the main interactions that stabilize the affinity of the chitosan-DM complexes. Based on our results, we suggest the use of a multipurpose fungal chitosan system for water bioremediation.",
journal = "Journal of Environmental Chemical Engineering",
title = "Utilization of industrial by-product fungal biomass from Aspergillus niger and Fusarium culmorum to obtain biosorbents for removal of pesticide and metal ions from aqueous solutions",
volume = "8",
number = "5",
pages = "104355",
doi = "10.1016/j.jece.2020.104355"
}

Cabrera-Barjas, G., Gallardo, F., Nešić, A., Taboada, E., Marican, A., Mirabal-Gallardo, Y., Avila-Salas, F., Delgado, N., de Armas-Ricard, M.,& Valdes, O.. (2020). Utilization of industrial by-product fungal biomass from Aspergillus niger and Fusarium culmorum to obtain biosorbents for removal of pesticide and metal ions from aqueous solutions. in Journal of Environmental Chemical Engineering, 8(5), 104355.
https://doi.org/10.1016/j.jece.2020.104355

Cabrera-Barjas G, Gallardo F, Nešić A, Taboada E, Marican A, Mirabal-Gallardo Y, Avila-Salas F, Delgado N, de Armas-Ricard M, Valdes O. Utilization of industrial by-product fungal biomass from Aspergillus niger and Fusarium culmorum to obtain biosorbents for removal of pesticide and metal ions from aqueous solutions. in Journal of Environmental Chemical Engineering. 2020;8(5):104355.
doi:10.1016/j.jece.2020.104355 .

Cabrera-Barjas, Gustavo, Gallardo, Francisco, Nešić, Aleksandra, Taboada, Edelio, Marican, Adolfo, Mirabal-Gallardo, Yaneris, Avila-Salas, Fabian, Delgado, Nacarid, de Armas-Ricard, Merly, Valdes, Oscar, "Utilization of industrial by-product fungal biomass from Aspergillus niger and Fusarium culmorum to obtain biosorbents for removal of pesticide and metal ions from aqueous solutions" in Journal of Environmental Chemical Engineering, 8, no. 5 (2020):104355,
https://doi.org/10.1016/j.jece.2020.104355 . .