TY  - JOUR
AU  - Milovanović, Stoja
AU  - Grzegorczyk, Agnieszka
AU  - Świątek, Łukasz
AU  - Boguszewska, Anastazja
AU  - Kowalski, Rafał
AU  - Tyśkiewicz, Katarzyna
AU  - Konkol, Marcin
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6713
AB  - Dandelion is a sustainable biomass that has occasional use in the food and pharmaceutical industry. However, commercial use of its extracts is restricted by the lack of systematic information on safety, composition, and biological activity. To broaden dandelion use, the present study brings new knowledge on extracts from dandelion seeds that could find application as safe and functional food ingredients. The employed two-step supercritical fluid extraction process, followed by the conventional extraction, enabled the separation of extracts with increased content of phenolics, tocopherols, and essential fatty acids. Those compounds were found to be the major components of dandelion extracts, reaching high values up to 799 mg GE/g, 249 mg α-TE/g, and 75%, respectively. The extracts also contained significant amounts of flavonoids (up to 20.5 mg QE/g) and pigments (chlorophyll A up to 1.0 g/kg, chlorophyll B up to 0.3 g/kg, and carotenoids up to 0.1 g/kg). This study revealed new bioproducts that express strong antioxidant (reaching IC50 values up to 132.5 μg/mL) and antimicrobial activity (with minimum inhibitory concentrations up to 80.0 μg/mL). Among the tested 23 microbial strains, the extracts exhibited the strongest activity against food-borne pathogens Micrococcus luteus and Bacillus subtilis. Furthermore, the antitumor and antiviral activity of separated dandelion biological products was evaluated.
PB  - Institution of Chemical Engineers
T2  - Food and Bioproducts Processing
T1  - Phenolic, tocopherol, and essential fatty acid-rich extracts from dandelion seeds: Chemical composition and biological activity
EP  - 81
SP  - 70
VL  - 142
DO  - 10.1016/j.fbp.2023.09.005
ER  - 

@article{
author = "Milovanović, Stoja and Grzegorczyk, Agnieszka and Świątek, Łukasz and Boguszewska, Anastazja and Kowalski, Rafał and Tyśkiewicz, Katarzyna and Konkol, Marcin",
year = "2023",
abstract = "Dandelion is a sustainable biomass that has occasional use in the food and pharmaceutical industry. However, commercial use of its extracts is restricted by the lack of systematic information on safety, composition, and biological activity. To broaden dandelion use, the present study brings new knowledge on extracts from dandelion seeds that could find application as safe and functional food ingredients. The employed two-step supercritical fluid extraction process, followed by the conventional extraction, enabled the separation of extracts with increased content of phenolics, tocopherols, and essential fatty acids. Those compounds were found to be the major components of dandelion extracts, reaching high values up to 799 mg GE/g, 249 mg α-TE/g, and 75%, respectively. The extracts also contained significant amounts of flavonoids (up to 20.5 mg QE/g) and pigments (chlorophyll A up to 1.0 g/kg, chlorophyll B up to 0.3 g/kg, and carotenoids up to 0.1 g/kg). This study revealed new bioproducts that express strong antioxidant (reaching IC50 values up to 132.5 μg/mL) and antimicrobial activity (with minimum inhibitory concentrations up to 80.0 μg/mL). Among the tested 23 microbial strains, the extracts exhibited the strongest activity against food-borne pathogens Micrococcus luteus and Bacillus subtilis. Furthermore, the antitumor and antiviral activity of separated dandelion biological products was evaluated.",
publisher = "Institution of Chemical Engineers",
journal = "Food and Bioproducts Processing",
title = "Phenolic, tocopherol, and essential fatty acid-rich extracts from dandelion seeds: Chemical composition and biological activity",
pages = "81-70",
volume = "142",
doi = "10.1016/j.fbp.2023.09.005"
}

Milovanović, S., Grzegorczyk, A., Świątek, Ł., Boguszewska, A., Kowalski, R., Tyśkiewicz, K.,& Konkol, M.. (2023). Phenolic, tocopherol, and essential fatty acid-rich extracts from dandelion seeds: Chemical composition and biological activity. in Food and Bioproducts Processing
Institution of Chemical Engineers., 142, 70-81.
https://doi.org/10.1016/j.fbp.2023.09.005

Milovanović S, Grzegorczyk A, Świątek Ł, Boguszewska A, Kowalski R, Tyśkiewicz K, Konkol M. Phenolic, tocopherol, and essential fatty acid-rich extracts from dandelion seeds: Chemical composition and biological activity. in Food and Bioproducts Processing. 2023;142:70-81.
doi:10.1016/j.fbp.2023.09.005 .

Milovanović, Stoja, Grzegorczyk, Agnieszka, Świątek, Łukasz, Boguszewska, Anastazja, Kowalski, Rafał, Tyśkiewicz, Katarzyna, Konkol, Marcin, "Phenolic, tocopherol, and essential fatty acid-rich extracts from dandelion seeds: Chemical composition and biological activity" in Food and Bioproducts Processing, 142 (2023):70-81,
https://doi.org/10.1016/j.fbp.2023.09.005 . .

TY  - CONF
AU  - Milovanović, Stoja
AU  - Grzegorczyk, Agnieszka
AU  - Świątek, Łukasz
AU  - Tyśkiewicz, Katarzyna
AU  - Konkol, Marcin
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6894
AB  - The main aim of this study was to evaluate chamomile seeds as a new source of valuable bioactive compounds. For this purpose, a green extraction technique was employed with supercritical carbon dioxide (sc-CO2) as a solvent and ethanol as a co-solvent. The extracts from chamomile seeds with an average particle size of 0.20 mm were extracted at pressures of 30 and 45 MPa and temperatures of 40 and 60 °C. The composition of extracts was investigated by a gas chromatography-mass spectrometry analytical method as well as Folin−Ciocalteu assay (for total phenolic content) and total flavonoid content test. The antioxidant activity of obtained chamomile extracts was evaluated using DPPH radical. The antimicrobial effect of extracts was tested on yeasts, Gram-positive, and Gram-negative bacteria while the cytotoxic effect was evaluated on normal and cancer cells. The extraction process parameters were evaluated and results showed a significant effect of operating pressure, temperature, and the addition of co-solvent on the amount of separated chamomile extract and its composition. The extraction yield ranged from 2.1 to 5.4% and extracts contained high amounts of unsaturated fatty acids. The addition of ethanol as a co-solvent (40 w/w%) had a slight influence on total phenolic and flavonoid contents increasing their values from 29.1 to 31.5 mg GAE/g and from 2.1 to 4.2 mg QE/g, respectively. The obtained supercritical chamomile extracts showed antioxidant activity achieving values of IC50 around 10 mg/mL. The antimicrobial activity of extracts was most pronounced against Bacillus subtilis. Extracts did not show cytotoxic activity against normal cells. Overall, results indicated a significant potential of extracts from chamomile seeds, produced in an environmentally friendly manner, to be used as a functional food or phytopharmaceuticals.
PB  - Valladolid : The lnstitute of Bioeconomy of University of Valladolid
C3  - Book of abstracts / 2nd Greenering International Conference, 21–23th March 2023, Valladolid, Spain
T1  - The separation of biologically active extracts from chamomile seeds
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6894
ER  - 

@conference{
author = "Milovanović, Stoja and Grzegorczyk, Agnieszka and Świątek, Łukasz and Tyśkiewicz, Katarzyna and Konkol, Marcin",
year = "2023",
abstract = "The main aim of this study was to evaluate chamomile seeds as a new source of valuable bioactive compounds. For this purpose, a green extraction technique was employed with supercritical carbon dioxide (sc-CO2) as a solvent and ethanol as a co-solvent. The extracts from chamomile seeds with an average particle size of 0.20 mm were extracted at pressures of 30 and 45 MPa and temperatures of 40 and 60 °C. The composition of extracts was investigated by a gas chromatography-mass spectrometry analytical method as well as Folin−Ciocalteu assay (for total phenolic content) and total flavonoid content test. The antioxidant activity of obtained chamomile extracts was evaluated using DPPH radical. The antimicrobial effect of extracts was tested on yeasts, Gram-positive, and Gram-negative bacteria while the cytotoxic effect was evaluated on normal and cancer cells. The extraction process parameters were evaluated and results showed a significant effect of operating pressure, temperature, and the addition of co-solvent on the amount of separated chamomile extract and its composition. The extraction yield ranged from 2.1 to 5.4% and extracts contained high amounts of unsaturated fatty acids. The addition of ethanol as a co-solvent (40 w/w%) had a slight influence on total phenolic and flavonoid contents increasing their values from 29.1 to 31.5 mg GAE/g and from 2.1 to 4.2 mg QE/g, respectively. The obtained supercritical chamomile extracts showed antioxidant activity achieving values of IC50 around 10 mg/mL. The antimicrobial activity of extracts was most pronounced against Bacillus subtilis. Extracts did not show cytotoxic activity against normal cells. Overall, results indicated a significant potential of extracts from chamomile seeds, produced in an environmentally friendly manner, to be used as a functional food or phytopharmaceuticals.",
publisher = "Valladolid : The lnstitute of Bioeconomy of University of Valladolid",
journal = "Book of abstracts / 2nd Greenering International Conference, 21–23th March 2023, Valladolid, Spain",
title = "The separation of biologically active extracts from chamomile seeds",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6894"
}

Milovanović, S., Grzegorczyk, A., Świątek, Ł., Tyśkiewicz, K.,& Konkol, M.. (2023). The separation of biologically active extracts from chamomile seeds. in Book of abstracts / 2nd Greenering International Conference, 21–23th March 2023, Valladolid, Spain
Valladolid : The lnstitute of Bioeconomy of University of Valladolid..
https://hdl.handle.net/21.15107/rcub_technorep_6894

Milovanović S, Grzegorczyk A, Świątek Ł, Tyśkiewicz K, Konkol M. The separation of biologically active extracts from chamomile seeds. in Book of abstracts / 2nd Greenering International Conference, 21–23th March 2023, Valladolid, Spain. 2023;.
https://hdl.handle.net/21.15107/rcub_technorep_6894 .

Milovanović, Stoja, Grzegorczyk, Agnieszka, Świątek, Łukasz, Tyśkiewicz, Katarzyna, Konkol, Marcin, "The separation of biologically active extracts from chamomile seeds" in Book of abstracts / 2nd Greenering International Conference, 21–23th March 2023, Valladolid, Spain (2023),
https://hdl.handle.net/21.15107/rcub_technorep_6894 .