TY  - JOUR
AU  - Jabeur, Inès
AU  - Pereira, Eliana
AU  - Caleja, Cristina
AU  - Calhelha, Ricardo C.
AU  - Soković, Marina
AU  - Catarino, Luís
AU  - Barros, Lillian
AU  - Ferreira, Isabel C. F. R.
PY  - 2019
UR  - http://xlink.rsc.org/?DOI=C9FO00287A
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/3340
AB  - Different external factors influence the chemical characteristics of natural products, varying according to the geographic origin. The present study determined the nutritional and chemical composition of Hibiscus sabdariffa L. dried calyces (Guinea-Bissauan origin), as well as the phenolic composition, antioxidant, anti-inflammatory, cytotoxicity and antimicrobial activity of its infusion and hydroethanolic extracts. Among the chemical components, glucose and quinic acid showed the major concentration for sugars and organic acids, respectively. Palmitic acid and α-tocopherol were the most abundant lipophilic compounds. The individual phenolic compounds were analysed through HPLC-DAD-ESI/MS. Thirteen compounds were identified in the hydroethanolic extract, while twelve were identified in the infusion, 3-O-caffeoylquinic acid being the major non-anthocyanin compound. Three anthocyanins were identified, delphinidin-3-O-sambubioside being the most abundant. Both extracts showed promising results in all the bioactive assays. This study exhibited the beneficial properties of H. sabdariffa and also emphasized the potential applications of this plant in different industrial sectors.
T2  - Food & Function
T1  - Exploring the chemical and bioactive properties of Hibiscus sabdariffa L. calyces from Guinea-Bissau (West Africa).
IS  - 4
VL  - 10
DO  - 10.1039/c9fo00287a
SP  - 2234
EP  - 2243
ER  - 

@article{
author = "Jabeur, Inès and Pereira, Eliana and Caleja, Cristina and Calhelha, Ricardo C. and Soković, Marina and Catarino, Luís and Barros, Lillian and Ferreira, Isabel C. F. R.",
year = "2019",
abstract = "Different external factors influence the chemical characteristics of natural products, varying according to the geographic origin. The present study determined the nutritional and chemical composition of Hibiscus sabdariffa L. dried calyces (Guinea-Bissauan origin), as well as the phenolic composition, antioxidant, anti-inflammatory, cytotoxicity and antimicrobial activity of its infusion and hydroethanolic extracts. Among the chemical components, glucose and quinic acid showed the major concentration for sugars and organic acids, respectively. Palmitic acid and α-tocopherol were the most abundant lipophilic compounds. The individual phenolic compounds were analysed through HPLC-DAD-ESI/MS. Thirteen compounds were identified in the hydroethanolic extract, while twelve were identified in the infusion, 3-O-caffeoylquinic acid being the major non-anthocyanin compound. Three anthocyanins were identified, delphinidin-3-O-sambubioside being the most abundant. Both extracts showed promising results in all the bioactive assays. This study exhibited the beneficial properties of H. sabdariffa and also emphasized the potential applications of this plant in different industrial sectors.",
journal = "Food & Function",
title = "Exploring the chemical and bioactive properties of Hibiscus sabdariffa L. calyces from Guinea-Bissau (West Africa).",
number = "4",
volume = "10",
doi = "10.1039/c9fo00287a",
pages = "2234-2243"
}

Jabeur, I., Pereira, E., Caleja, C., Calhelha, R. C., Soković, M., Catarino, L., Barros, L.,& Ferreira, I. C. F. R.. (2019). Exploring the chemical and bioactive properties of Hibiscus sabdariffa L. calyces from Guinea-Bissau (West Africa).. in Food & Function, 10(4), 2234-2243.
https://doi.org/10.1039/c9fo00287a

Jabeur I, Pereira E, Caleja C, Calhelha RC, Soković M, Catarino L, Barros L, Ferreira ICFR. Exploring the chemical and bioactive properties of Hibiscus sabdariffa L. calyces from Guinea-Bissau (West Africa).. in Food & Function. 2019;10(4):2234-2243.
doi:10.1039/c9fo00287a .

Jabeur, Inès, Pereira, Eliana, Caleja, Cristina, Calhelha, Ricardo C., Soković, Marina, Catarino, Luís, Barros, Lillian, Ferreira, Isabel C. F. R., "Exploring the chemical and bioactive properties of Hibiscus sabdariffa L. calyces from Guinea-Bissau (West Africa)." in Food & Function, 10, no. 4 (2019):2234-2243,
https://doi.org/10.1039/c9fo00287a . .

TY  - JOUR
AU  - Petropoulos, Spyridon A.
AU  - Fernandes, Ângela
AU  - Tzortzakis, Nikolaos
AU  - Soković, Marina
AU  - Ćirić, Ana
AU  - Barros, Lillian
AU  - Ferreira, Isabel C.F.R.
PY  - 2019
UR  - https://www.sciencedirect.com/science/article/pii/S0963996918308615?via%3Dihub
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/3169
AB  - Nine wild edible species belonging to Astreaceae family, native to the Mediterranean basin were tested for their chemical composition (phenolic compounds, tocopherols, and organic acids) and antimicrobial activities over two growing periods, apart from Scolymus hispanicus and Hedypnois cretica which were tested for only one growing period. Flavonoids were the most abundant phenolic compounds in all the species, except for the case of Taraxacum species where significant amounts of chicoric acid were detected, while phenolic compounds content increased in the 2nd growing period by 4.6–397.4% for the tested species. α- and β-tocopherols were the main tocopherols, apart from Taraxacum sp. where significant amounts of γ-and δ-tocopherols (18.32 and 16.31 μg/100 g fresh weight) were detected, while total tocopherols content either increased (Reicardia picroides, Picris echioides, Urospermum picroides, and Taraxacum officinale) or decreased (Hymenonema graecum, Sonchus oleraceus, Taraxacum sp.) in the 2nd growing period. Oxalic acid was the most abundant organic acid, with the highest content (972 mg/100 g fresh weight) being observed in H. graecum (L.) DC. in the 1st growing period. Moreover, with the exception of H. graecum and S. olearaceus, total organic acids content increased in the 2nd growing period. Significant antimicrobial activities were observed against Bacillus cereus, Salmonella typhimurium and Penicillium ochrochloron for all the studied species. In conclusion, the studied species showed great potential for commercial cultivation, while plant extracts could find use in the food industry as alternative food preservatives.
T2  - Food Research International
T1  - Bioactive compounds content and antimicrobial activities of wild edible Asteraceae species of the Mediterranean flora under commercial cultivation conditions
VL  - 119
DO  - 10.1016/J.FOODRES.2018.10.069
SP  - 859
EP  - 868
ER  - 

@article{
author = "Petropoulos, Spyridon A. and Fernandes, Ângela and Tzortzakis, Nikolaos and Soković, Marina and Ćirić, Ana and Barros, Lillian and Ferreira, Isabel C.F.R.",
year = "2019",
abstract = "Nine wild edible species belonging to Astreaceae family, native to the Mediterranean basin were tested for their chemical composition (phenolic compounds, tocopherols, and organic acids) and antimicrobial activities over two growing periods, apart from Scolymus hispanicus and Hedypnois cretica which were tested for only one growing period. Flavonoids were the most abundant phenolic compounds in all the species, except for the case of Taraxacum species where significant amounts of chicoric acid were detected, while phenolic compounds content increased in the 2nd growing period by 4.6–397.4% for the tested species. α- and β-tocopherols were the main tocopherols, apart from Taraxacum sp. where significant amounts of γ-and δ-tocopherols (18.32 and 16.31 μg/100 g fresh weight) were detected, while total tocopherols content either increased (Reicardia picroides, Picris echioides, Urospermum picroides, and Taraxacum officinale) or decreased (Hymenonema graecum, Sonchus oleraceus, Taraxacum sp.) in the 2nd growing period. Oxalic acid was the most abundant organic acid, with the highest content (972 mg/100 g fresh weight) being observed in H. graecum (L.) DC. in the 1st growing period. Moreover, with the exception of H. graecum and S. olearaceus, total organic acids content increased in the 2nd growing period. Significant antimicrobial activities were observed against Bacillus cereus, Salmonella typhimurium and Penicillium ochrochloron for all the studied species. In conclusion, the studied species showed great potential for commercial cultivation, while plant extracts could find use in the food industry as alternative food preservatives.",
journal = "Food Research International",
title = "Bioactive compounds content and antimicrobial activities of wild edible Asteraceae species of the Mediterranean flora under commercial cultivation conditions",
volume = "119",
doi = "10.1016/J.FOODRES.2018.10.069",
pages = "859-868"
}

Petropoulos, S. A., Fernandes, Â., Tzortzakis, N., Soković, M., Ćirić, A., Barros, L.,& Ferreira, I. C.F.R.. (2019). Bioactive compounds content and antimicrobial activities of wild edible Asteraceae species of the Mediterranean flora under commercial cultivation conditions. in Food Research International, 119, 859-868.
https://doi.org/10.1016/J.FOODRES.2018.10.069

Petropoulos SA, Fernandes Â, Tzortzakis N, Soković M, Ćirić A, Barros L, Ferreira IC. Bioactive compounds content and antimicrobial activities of wild edible Asteraceae species of the Mediterranean flora under commercial cultivation conditions. in Food Research International. 2019;119:859-868.
doi:10.1016/J.FOODRES.2018.10.069 .

Petropoulos, Spyridon A., Fernandes, Ângela, Tzortzakis, Nikolaos, Soković, Marina, Ćirić, Ana, Barros, Lillian, Ferreira, Isabel C.F.R., "Bioactive compounds content and antimicrobial activities of wild edible Asteraceae species of the Mediterranean flora under commercial cultivation conditions" in Food Research International, 119 (2019):859-868,
https://doi.org/10.1016/J.FOODRES.2018.10.069 . .

TY  - JOUR
AU  - Roriz, Custódio Lobo
AU  - Barros, Lillian
AU  - Prieto, M. A.
AU  - Ćirić, Ana
AU  - Soković, Marina
AU  - Morales, Patricia
AU  - Ferreira, Isabel C. F. R.
PY  - 2018
UR  - http://xlink.rsc.org/?DOI=C8FO01829D
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/3221
AB  - Although less explored than beetroot (Beta vulgaris L.), the flowers of Gomphrena globosa L. are a very suitable source of betacyanins with strong pigmentation features, together with many other desirable bioactive properties. Thus, the aim of this study was to enhance the antimicrobial and antifungal activities of a pigmented extract obtained from G. globosa flowers by ultrasound assisted extraction (UAE). The procedure was supported with the application of the response surface methodology, a robust optimization technique that allows to study jointly the effects of several variables and responses. To enhance the antimicrobial (Bacillus cereus, Listeria monocytogenes, Escherichia coli and Salmonella typhimurium) and antifungal (Aspergillus flavus, Aspergillus niger, Penicillium ochrochloron and Penicillium verrucosum) activities, the responses were evaluated in terms of the concentrations needed to obtain minimum inhibitory (MIC), minimum bactericidal (MBC) and minimum fungicidal (MFC) concentrations. It was found that the optimal UAE conditions were 10.8 min, 410.5 W, 57.8% of ethanol, and 5 g L-1 of the solid-liquid ratio providing the following response values: (1) from the studied species of bacteria, the MIC ranged from ∼0.15 to 0.35 g L-1 and the MBC ranges were ∼0.30 to 0.65 g L-1; and (2) from the studied fungus species, the MIC ranged from ∼0.20 to 0.30 g L-1 and the MFC ranges were ∼0.40 to 0.65 g L-1. The antibacterial activity dose levels were lower than the antifungal ones. In conclusion, the results obtained in this study highlight extracts from G. globosa flowers as natural sources of betacyanins with application as food colorants with important antimicrobial and antifungal activities.
T2  - Food and Function
T1  - Enhancing the antimicrobial and antifungal activities of a coloring extract agent rich in betacyanins obtained from Gomphrena globosa L. flowers.
IS  - 12
VL  - 9
DO  - 10.1039/c8fo01829d
SP  - 6205
EP  - 6217
ER  - 

@article{
author = "Roriz, Custódio Lobo and Barros, Lillian and Prieto, M. A. and Ćirić, Ana and Soković, Marina and Morales, Patricia and Ferreira, Isabel C. F. R.",
year = "2018",
abstract = "Although less explored than beetroot (Beta vulgaris L.), the flowers of Gomphrena globosa L. are a very suitable source of betacyanins with strong pigmentation features, together with many other desirable bioactive properties. Thus, the aim of this study was to enhance the antimicrobial and antifungal activities of a pigmented extract obtained from G. globosa flowers by ultrasound assisted extraction (UAE). The procedure was supported with the application of the response surface methodology, a robust optimization technique that allows to study jointly the effects of several variables and responses. To enhance the antimicrobial (Bacillus cereus, Listeria monocytogenes, Escherichia coli and Salmonella typhimurium) and antifungal (Aspergillus flavus, Aspergillus niger, Penicillium ochrochloron and Penicillium verrucosum) activities, the responses were evaluated in terms of the concentrations needed to obtain minimum inhibitory (MIC), minimum bactericidal (MBC) and minimum fungicidal (MFC) concentrations. It was found that the optimal UAE conditions were 10.8 min, 410.5 W, 57.8% of ethanol, and 5 g L-1 of the solid-liquid ratio providing the following response values: (1) from the studied species of bacteria, the MIC ranged from ∼0.15 to 0.35 g L-1 and the MBC ranges were ∼0.30 to 0.65 g L-1; and (2) from the studied fungus species, the MIC ranged from ∼0.20 to 0.30 g L-1 and the MFC ranges were ∼0.40 to 0.65 g L-1. The antibacterial activity dose levels were lower than the antifungal ones. In conclusion, the results obtained in this study highlight extracts from G. globosa flowers as natural sources of betacyanins with application as food colorants with important antimicrobial and antifungal activities.",
journal = "Food and Function",
title = "Enhancing the antimicrobial and antifungal activities of a coloring extract agent rich in betacyanins obtained from Gomphrena globosa L. flowers.",
number = "12",
volume = "9",
doi = "10.1039/c8fo01829d",
pages = "6205-6217"
}

Roriz, C. L., Barros, L., Prieto, M. A., Ćirić, A., Soković, M., Morales, P.,& Ferreira, I. C. F. R.. (2018). Enhancing the antimicrobial and antifungal activities of a coloring extract agent rich in betacyanins obtained from Gomphrena globosa L. flowers.. in Food and Function, 9(12), 6205-6217.
https://doi.org/10.1039/c8fo01829d

Roriz CL, Barros L, Prieto MA, Ćirić A, Soković M, Morales P, Ferreira ICFR. Enhancing the antimicrobial and antifungal activities of a coloring extract agent rich in betacyanins obtained from Gomphrena globosa L. flowers.. in Food and Function. 2018;9(12):6205-6217.
doi:10.1039/c8fo01829d .

Roriz, Custódio Lobo, Barros, Lillian, Prieto, M. A., Ćirić, Ana, Soković, Marina, Morales, Patricia, Ferreira, Isabel C. F. R., "Enhancing the antimicrobial and antifungal activities of a coloring extract agent rich in betacyanins obtained from Gomphrena globosa L. flowers." in Food and Function, 9, no. 12 (2018):6205-6217,
https://doi.org/10.1039/c8fo01829d . .