TY  - JOUR
AU  - Cabrera-Barjas, Gustavo
AU  - Quezada, Adriana
AU  - Bernardo, Yamilé
AU  - Moncada, Mauricio
AU  - Zúñiga, Elisa
AU  - Wilkens, Marcela
AU  - Giordano, Ady
AU  - Nešić, Aleksandra
AU  - Delgado, Nacarid
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8845
AB  - Murta (Ugni molinae Turcz) is an endemic Chilean specie mostly used in medical, cosmetic, and food industries. However, during the industrial processing of murta fruits, the biomass containing the seeds is discarded as an industrial byproduct that does not find significant uses yet. This work is a first approach to valorize murta biomass through the identification and quantification of principal chemical constituents and exploring their antibacterial properties. The proximal analysis revealed that murta seeds exhibited significant content of raw fiber (64%), crude fat (14%), crude protein (12%), and low levels of ashes (1.5%) and minerals (0.04–0.23%). Dietary fiber was mainly composed of lignin, cellulose, pectin, and hemicellulose. Polyunsaturated fatty acids (89.0%), monounsaturated fatty acids (7.7%), and saturated fatty acids (3.3%) were the main constituents of seed oils. The arginine, asparagine, glutamic acid, and glycine were the primary protein constituent amino acids. Tannin fractions, total polyphenolic content, and oxygen radical absorbance capacity as antioxidant activity were measured. The chromatographic and mass spectrometric analysis (HPLC–MS/MS) confirmed the presence of several phenolic compounds like phenolic acids, flavonols, flavones, proanthocyanidins, and high molecular weight polyphenols. The murta seed extract showed high antibacterial activity against both Gram positive (Staphylococcus aureus, Bacillus cereus, and Streptococcus pyogenes) and Gram negative (Escherichia coli, Salmonella typhi, and Pseudomonas aeruginosa) bacterial strains. Murta seeds could be considered as a new source of nutritional components and bioactive compounds for different nutraceutical and food applications. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.
T2  - Journal of Food Measurement and Characterization
T1  - Chemical composition and antibacterial activity of red murta (Ugni molinae Turcz.) seeds: an undervalued Chilean resource
VL  - 14
IS  - 4
SP  - 1810
EP  - 1821
DO  - 10.1007/s11694-020-00428-x
ER  - 

@article{
author = "Cabrera-Barjas, Gustavo and Quezada, Adriana and Bernardo, Yamilé and Moncada, Mauricio and Zúñiga, Elisa and Wilkens, Marcela and Giordano, Ady and Nešić, Aleksandra and Delgado, Nacarid",
year = "2020",
abstract = "Murta (Ugni molinae Turcz) is an endemic Chilean specie mostly used in medical, cosmetic, and food industries. However, during the industrial processing of murta fruits, the biomass containing the seeds is discarded as an industrial byproduct that does not find significant uses yet. This work is a first approach to valorize murta biomass through the identification and quantification of principal chemical constituents and exploring their antibacterial properties. The proximal analysis revealed that murta seeds exhibited significant content of raw fiber (64%), crude fat (14%), crude protein (12%), and low levels of ashes (1.5%) and minerals (0.04–0.23%). Dietary fiber was mainly composed of lignin, cellulose, pectin, and hemicellulose. Polyunsaturated fatty acids (89.0%), monounsaturated fatty acids (7.7%), and saturated fatty acids (3.3%) were the main constituents of seed oils. The arginine, asparagine, glutamic acid, and glycine were the primary protein constituent amino acids. Tannin fractions, total polyphenolic content, and oxygen radical absorbance capacity as antioxidant activity were measured. The chromatographic and mass spectrometric analysis (HPLC–MS/MS) confirmed the presence of several phenolic compounds like phenolic acids, flavonols, flavones, proanthocyanidins, and high molecular weight polyphenols. The murta seed extract showed high antibacterial activity against both Gram positive (Staphylococcus aureus, Bacillus cereus, and Streptococcus pyogenes) and Gram negative (Escherichia coli, Salmonella typhi, and Pseudomonas aeruginosa) bacterial strains. Murta seeds could be considered as a new source of nutritional components and bioactive compounds for different nutraceutical and food applications. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "Journal of Food Measurement and Characterization",
title = "Chemical composition and antibacterial activity of red murta (Ugni molinae Turcz.) seeds: an undervalued Chilean resource",
volume = "14",
number = "4",
pages = "1810-1821",
doi = "10.1007/s11694-020-00428-x"
}

Cabrera-Barjas, G., Quezada, A., Bernardo, Y., Moncada, M., Zúñiga, E., Wilkens, M., Giordano, A., Nešić, A.,& Delgado, N.. (2020). Chemical composition and antibacterial activity of red murta (Ugni molinae Turcz.) seeds: an undervalued Chilean resource. in Journal of Food Measurement and Characterization, 14(4), 1810-1821.
https://doi.org/10.1007/s11694-020-00428-x

Cabrera-Barjas G, Quezada A, Bernardo Y, Moncada M, Zúñiga E, Wilkens M, Giordano A, Nešić A, Delgado N. Chemical composition and antibacterial activity of red murta (Ugni molinae Turcz.) seeds: an undervalued Chilean resource. in Journal of Food Measurement and Characterization. 2020;14(4):1810-1821.
doi:10.1007/s11694-020-00428-x .

Cabrera-Barjas, Gustavo, Quezada, Adriana, Bernardo, Yamilé, Moncada, Mauricio, Zúñiga, Elisa, Wilkens, Marcela, Giordano, Ady, Nešić, Aleksandra, Delgado, Nacarid, "Chemical composition and antibacterial activity of red murta (Ugni molinae Turcz.) seeds: an undervalued Chilean resource" in Journal of Food Measurement and Characterization, 14, no. 4 (2020):1810-1821,
https://doi.org/10.1007/s11694-020-00428-x . .

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 . .