TY  - JOUR
AU  - Kostić, Aleksandar
AU  - Milinčić, Danijel
AU  - Špirović Trifunović, Bojana
AU  - Nedić, Nebojša
AU  - Gašić, Uroš
AU  - Tešić, Živoslav
AU  - Stanojević, Sladjana
AU  - Pešić, Mirjana
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6466
AB  - The aim of this study was to compile a detailed phytochemical profile and assess the antioxidant properties of bee-collected pollen (PBP) obtained from corn poppy (Papaver rhoeas L.) plants. To achieve this, a lipid fraction was prepared for quantifying fatty acids using GC-FID. Extractable and alkaline-hydrolysable PBP fractions (obtained from a defatted sample) were used to determine the qualitative and quantitative profiles of phenolic compounds, phenylamides and alkaloids using UHPLC/Q-ToF-MS. Additionally, various spectrophotometric assays (TAC, FRP, CUPRAC, DPPH⦁) were conducted to evaluate the antioxidant properties. Phenolic compounds were more present in the extractable fraction than in the alkaline-hydrolysable fraction. Luteolin was the predominant compound in the extractable fraction, followed by tricetin and various derivatives of kaempferol. This study presents one of the first reports on the quantification of tricetin aglycone outside the Myrtaceae plant family. The alkaline-hydrolysable fraction exhibited a different phenolic profile, with a significantly lower amount of phenolics. Kaempferol/derivatives, specific compounds like ferulic and 5-carboxyvanillic acids, and (epi)catechin 3-O-gallate were the predominant compounds in this fraction. Regarding phenylamides, the extractable fraction demonstrated a diverse range of these bioactive compounds, with a notable abundance of different spermine derivatives. In contrast, the hydrolysable fraction contained six spermine derivatives and one spermidine derivative. The examined fractions also revealed the presence of seventeen different alkaloids, belonging to the benzylisoquinoline, berberine and isoquinoline classes. The fatty-acid profile confirmed the prevalence of unsaturated fatty acids. Furthermore, both fractions exhibited significant antioxidant activity, with the extractable fraction showing particularly high activity. Among the assays conducted, the CUPRAC assay highlighted the exceptional ability of PBP’s bioactive compounds to reduce cupric ions.
PB  - Basel: MDPI
T2  - Antioxidants
T1  - Monofloral Corn Poppy Bee-Collected Pollen—A Detailed Insight into Its Phytochemical Composition and Antioxidant Properties
IS  - 7
VL  - 12
DO  - 10.3390/antiox12071424
SP  - 1424
ER  - 

@article{
author = "Kostić, Aleksandar and Milinčić, Danijel and Špirović Trifunović, Bojana and Nedić, Nebojša and Gašić, Uroš and Tešić, Živoslav and Stanojević, Sladjana and Pešić, Mirjana",
year = "2023",
abstract = "The aim of this study was to compile a detailed phytochemical profile and assess the antioxidant properties of bee-collected pollen (PBP) obtained from corn poppy (Papaver rhoeas L.) plants. To achieve this, a lipid fraction was prepared for quantifying fatty acids using GC-FID. Extractable and alkaline-hydrolysable PBP fractions (obtained from a defatted sample) were used to determine the qualitative and quantitative profiles of phenolic compounds, phenylamides and alkaloids using UHPLC/Q-ToF-MS. Additionally, various spectrophotometric assays (TAC, FRP, CUPRAC, DPPH⦁) were conducted to evaluate the antioxidant properties. Phenolic compounds were more present in the extractable fraction than in the alkaline-hydrolysable fraction. Luteolin was the predominant compound in the extractable fraction, followed by tricetin and various derivatives of kaempferol. This study presents one of the first reports on the quantification of tricetin aglycone outside the Myrtaceae plant family. The alkaline-hydrolysable fraction exhibited a different phenolic profile, with a significantly lower amount of phenolics. Kaempferol/derivatives, specific compounds like ferulic and 5-carboxyvanillic acids, and (epi)catechin 3-O-gallate were the predominant compounds in this fraction. Regarding phenylamides, the extractable fraction demonstrated a diverse range of these bioactive compounds, with a notable abundance of different spermine derivatives. In contrast, the hydrolysable fraction contained six spermine derivatives and one spermidine derivative. The examined fractions also revealed the presence of seventeen different alkaloids, belonging to the benzylisoquinoline, berberine and isoquinoline classes. The fatty-acid profile confirmed the prevalence of unsaturated fatty acids. Furthermore, both fractions exhibited significant antioxidant activity, with the extractable fraction showing particularly high activity. Among the assays conducted, the CUPRAC assay highlighted the exceptional ability of PBP’s bioactive compounds to reduce cupric ions.",
publisher = "Basel: MDPI",
journal = "Antioxidants",
title = "Monofloral Corn Poppy Bee-Collected Pollen—A Detailed Insight into Its Phytochemical Composition and Antioxidant Properties",
number = "7",
volume = "12",
doi = "10.3390/antiox12071424",
pages = "1424"
}

Kostić, A., Milinčić, D., Špirović Trifunović, B., Nedić, N., Gašić, U., Tešić, Ž., Stanojević, S.,& Pešić, M.. (2023). Monofloral Corn Poppy Bee-Collected Pollen—A Detailed Insight into Its Phytochemical Composition and Antioxidant Properties. in Antioxidants
Basel: MDPI., 12(7), 1424.
https://doi.org/10.3390/antiox12071424

Kostić A, Milinčić D, Špirović Trifunović B, Nedić N, Gašić U, Tešić Ž, Stanojević S, Pešić M. Monofloral Corn Poppy Bee-Collected Pollen—A Detailed Insight into Its Phytochemical Composition and Antioxidant Properties. in Antioxidants. 2023;12(7):1424.
doi:10.3390/antiox12071424 .

Kostić, Aleksandar, Milinčić, Danijel, Špirović Trifunović, Bojana, Nedić, Nebojša, Gašić, Uroš, Tešić, Živoslav, Stanojević, Sladjana, Pešić, Mirjana, "Monofloral Corn Poppy Bee-Collected Pollen—A Detailed Insight into Its Phytochemical Composition and Antioxidant Properties" in Antioxidants, 12, no. 7 (2023):1424,
https://doi.org/10.3390/antiox12071424 . .

TY  - JOUR
AU  - Kostić, Aleksandar
AU  - Milinčić, Danijel
AU  - Nedić, Nebojša
AU  - Gašić, Uroš
AU  - Špirović Trifunović, Bojana
AU  - Vojt, Denis
AU  - Tešić, Živoslav
AU  - Pešić, Mirjana
PY  - 2021
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/4315
AB  - The current study intended to determine, for the first time, phenolic and fatty acid profile, antioxidant and certain nutritional properties of monofloral bee-collected artichoke (Cynara scolymus) pollen. Based on UHPLC-DAD MS-MS analysis the main phenolics in extractable fraction were different flavonol glycosides (in particular Isorhamnetin-3-O-glucoside, 49.2 mg/kg of dry weight) while ferulic acid was the predominant phenolic compound (39.4 mg/kg of dry weight) in the alkaline hydrolyzable fraction. Among fatty acids (FAs), results of GC-FID analysis revealed prevalence of unsaturated FAs with cis-5,8,11,14,17-eicosapentaenoic acid (EPA) and oleic acid as the main ones- 28.4% and 24.9%, respectively. Based on the FA composition, nutritional analysis proved that artichoke bee-collected pollen had balanced ω-6 and ω-3 FAs content. To determine the antioxidant properties of pollen, five different assays were applied. It was proved that bioactive compounds in artichoke pollen possessed significant ability to quench DPPH radical as well as ABTS radical cation. In addition, in vitro phosphomolybdenum assay confirmed that artichoke pollen is an excellent source of different antioxidants. Pollen extracts exhibited moderate ferric reducing power as well as low ferrous chelating ability. Some further antioxidant studies (preferably in vivo) should be performed to confirm the observed results.
PB  - Basel: MDPI
T2  - Antioxidants
T1  - Phytochemical Profile and Antioxidant Properties of Bee-Collected Artichoke (Cynara scolymus) Pollen
IS  - 7
VL  - 10
DO  - 10.3390/antiox10071091
SP  - 1091
ER  - 

@article{
author = "Kostić, Aleksandar and Milinčić, Danijel and Nedić, Nebojša and Gašić, Uroš and Špirović Trifunović, Bojana and Vojt, Denis and Tešić, Živoslav and Pešić, Mirjana",
year = "2021",
abstract = "The current study intended to determine, for the first time, phenolic and fatty acid profile, antioxidant and certain nutritional properties of monofloral bee-collected artichoke (Cynara scolymus) pollen. Based on UHPLC-DAD MS-MS analysis the main phenolics in extractable fraction were different flavonol glycosides (in particular Isorhamnetin-3-O-glucoside, 49.2 mg/kg of dry weight) while ferulic acid was the predominant phenolic compound (39.4 mg/kg of dry weight) in the alkaline hydrolyzable fraction. Among fatty acids (FAs), results of GC-FID analysis revealed prevalence of unsaturated FAs with cis-5,8,11,14,17-eicosapentaenoic acid (EPA) and oleic acid as the main ones- 28.4% and 24.9%, respectively. Based on the FA composition, nutritional analysis proved that artichoke bee-collected pollen had balanced ω-6 and ω-3 FAs content. To determine the antioxidant properties of pollen, five different assays were applied. It was proved that bioactive compounds in artichoke pollen possessed significant ability to quench DPPH radical as well as ABTS radical cation. In addition, in vitro phosphomolybdenum assay confirmed that artichoke pollen is an excellent source of different antioxidants. Pollen extracts exhibited moderate ferric reducing power as well as low ferrous chelating ability. Some further antioxidant studies (preferably in vivo) should be performed to confirm the observed results.",
publisher = "Basel: MDPI",
journal = "Antioxidants",
title = "Phytochemical Profile and Antioxidant Properties of Bee-Collected Artichoke (Cynara scolymus) Pollen",
number = "7",
volume = "10",
doi = "10.3390/antiox10071091",
pages = "1091"
}

Kostić, A., Milinčić, D., Nedić, N., Gašić, U., Špirović Trifunović, B., Vojt, D., Tešić, Ž.,& Pešić, M.. (2021). Phytochemical Profile and Antioxidant Properties of Bee-Collected Artichoke (Cynara scolymus) Pollen. in Antioxidants
Basel: MDPI., 10(7), 1091.
https://doi.org/10.3390/antiox10071091

Kostić A, Milinčić D, Nedić N, Gašić U, Špirović Trifunović B, Vojt D, Tešić Ž, Pešić M. Phytochemical Profile and Antioxidant Properties of Bee-Collected Artichoke (Cynara scolymus) Pollen. in Antioxidants. 2021;10(7):1091.
doi:10.3390/antiox10071091 .

Kostić, Aleksandar, Milinčić, Danijel, Nedić, Nebojša, Gašić, Uroš, Špirović Trifunović, Bojana, Vojt, Denis, Tešić, Živoslav, Pešić, Mirjana, "Phytochemical Profile and Antioxidant Properties of Bee-Collected Artichoke (Cynara scolymus) Pollen" in Antioxidants, 10, no. 7 (2021):1091,
https://doi.org/10.3390/antiox10071091 . .