Department of Phytochemistry
Our studies are focused on biologically active secondary metabolites from plants and plant tissue cultures, with special interest in compounds biosynthesized by the plants of Cichorieae and Inuleae tribes (Asteraceae family). Recently, we have been investigating formerly unexamined Lactuca species of African and Asian origin, in a search of antioxidative and anti-inflammatory compounds.
Scope of research:
- plant secondary metabolites - isolation and structure identification/elucidation,
- qualitative and quantitative analysis of bioactive compounds in a plant material,
- regulation of plant metabolism in vitro and in vivo,
- bioactivity assays,
- tissue cultures of medicinal plants.
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Janusz Malarz, Agnieszka Galanty, Anna Stojakowska
Plants (Basel, Switzerland), 2815 10.3390/plants11212815
PMID:36365268 -
Hairy Root Cultures as a Source of Polyphenolic Antioxidants: Flavonoids, Stilbenoids and Hydrolyzable Tannins.
Janusz Malarz, Klaudia Michalska, Yulia V Yudina, Anna Stojakowska
Plants (Basel, Switzerland), 1950 10.3390/plants11151950
PMID:35956428 -
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Ciara-Ruth Kenny, Anna Stojakowska, Ambrose Furey, Brigid Lucey
Molecules (Basel, Switzerland), 1406 10.3390/molecules27041406
PMID:35209195 -
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Klaudia Michalska, Agnieszka Galanty, Thanh Nguyen Le, Janusz Malarz, Nguyen Quoc Vuong, Van Cuong Pham, Anna Stojakowska
Molecules (Basel, Switzerland), 7013 10.3390/molecules26227013
PMID:34834104 -
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Danuta Jantas, Janusz Malarz, Thanh Nguyen Le, Anna Stojakowska
International journal of molecular sciences, 10363 10.3390/ijms221910363
PMID:34638702 -
The contribution of phenolics to the anti-inflammatory potential of the extract from Bolivian coriander (Porophyllum ruderale subsp. ruderale).
Karolina A Pawłowska, Tomasz Baracz, Weronika Skowrońska, Jakub P Piwowarski, Magdalena Majdan, Janusz Malarz, Anna Stojakowska, Christian Zidorn, Sebastian Granica
Food chemistry, S0308-8146(21)02122-1 10.1016/j.foodchem.2021.131116
PMID:34583181 -
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Natalia Kłeczek, Janusz Malarz, Barbara Gierlikowska, Łukasz Skalniak, Agnieszka Galanty, Anna K Kiss, Anna Stojakowska
Molecules (Basel, Switzerland), 4644 10.3390/molecules26154644
PMID:34361797 -
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Klaudia Michalska, Janusz Malarz, Anna Stojakowska
Natural product research, 10.1080/14786419.2021.1920583
PMID:33969755 -
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Anna Wajs-Bonikowska, Janusz Malarz, Łukasz Szoka, Paweł Kwiatkowski, Anna Stojakowska
Molecules (Basel, Switzerland), 1883 10.3390/molecules26071883
PMID:33810440 -
Stem Lettuce and Its Metabolites: Does the Variety Make Any Difference?
Janusz Malarz, Klaudia Michalska, Anna Stojakowska
Foods (Basel, Switzerland), E59 10.3390/foods10010059
PMID:33383824 -
Neuroprotective Effects of Methyl Caffeate against Hydrogen Peroxide-Induced Cell Damage: Involvement of Caspase 3 and Cathepsin D Inhibition.
Danuta Jantas, Jakub Chwastek, Janusz Malarz, Anna Stojakowska, Władysław Lasoń
Biomolecules, E1530 10.3390/biom10111530
PMID:33182454 -
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Natalia Kłeczek, Janusz Malarz, Barbara Gierlikowska, Anna K Kiss, Anna Stojakowska
Molecules (Basel, Switzerland), E4913 10.3390/molecules25214913
PMID:33114240 -
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Klaudia Michalska, Jolanta Marciniuk, Anna Stojakowska
Natural product research, 10.1080/14786419.2020.1712389
PMID:31928353 -
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Anna Wajs-Bonikowska, Janusz Malarz, Anna Stojakowska
Molecules (Basel, Switzerland), E4418 10.3390/molecules24234418
PMID:31816933 -
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Natalia Kłeczek, Barbara Michalak, Janusz Malarz, Anna Karolina Kiss, Anna Stojakowska
Molecules (Basel, Switzerland), E1614 10.3390/molecules24081614
PMID:31022860
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Secondary Metabolism in Tissue and Organ Cultures of Plants from the Tribe Cichorieae
Stojakowska A., Malarz J. (2021) Secondary Metabolism in Tissue and Organ Cultures of Plants from the Tribe Cichorieae. In: Ramawat K.G., Ekiert H.M., Goyal S. (eds) Plant Cell and Tissue Differentiation and Secondary Metabolites. Reference Series in Phytochemistry. Springer, Cham. https://doi.org/10.1007/978-3-030-30185-9_23
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Natural products from Tolpis barbata (L.) Gaertn. (Asteraceae,Cichorieae)
Michalska K., Malarz J., Paul W., Stojakowska A. Biochem. Syst. Ecol., 2019, 86, 103922
- Associations between root-inhabiting fungi and 40 species of medicinal plants with potential applications in the pharmaceutical and biotechnological industries Piszczek P., Kuszewska K., Błaszkowski J., Sochacka-Obruśnik A., Stojakowska A., Zubek S. Appl. Soil Ecol., 2019, 137, 69-77
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Further sesquiterpenoids and phenolics from two species of Taraxacum F.H.Wigg. and cytotoxic activity of taraxinic acid and its derivatives
Michalska K., Galanty A., Michalski O., Stojakowska A. Phytochem. Lett., 2019, 30, 296-301
- Thymol derivatives from the roots of Xerolekia speciosissima an endemic species of the pre-Alpine area Kłeczek N., Malarz J., Kosecka-Strojek M., Musielak B., Stojakowska A. 2019, 30, 235-237. DOI: 10.1016/j.phytol.2019.01.010
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Sesquiterpene lactones and phenolics from roots of Leontodon hispidus subsp. hispidus
Michalska K., Pieron K., Stojakowska A. 2018. Nat. Prod. Commun., 13, 393-394.
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Phenolics and terpenoids from a wild edible plant Lactuca orientalis (Boiss.) Boiss.: A preliminary study
Stojakowska A., Michalska K., Kłeczek N., Malarz J., Beharav A. 2018. J. Food Comp. Anal., 69, 20-24.
- Bioactive phenolics from in vitro cultures of Lactuca aculeata Boiss. et Kotschy Stojakowska A., Malarz J. 2017. Phytochem. Lett., 19, 7-11
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Sesquiterpenoids from roots of Lactuca sativa var. angustana cv. "Gruener Stern"
Michalska K., Michalski O., Stojakowska A. 2017, 20, 425-428. DOI 10.1016/j.phytol.2016.10.023
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Hydroxycinnamates from elecampane (Inula helenium L.) callus culture
Stojakowska A., Malarz J., Kiss A.K. 2016. Acta Physiol. Plant., 38, 41, DOI 10.1007/s11738-016-2069-y
- Acylated hydroxycinnamic acid glucosides from flowers of Telekia speciosa Stojakowska A., Malarz J., Żylewski M., Kisiel W. 2015. Phytochemistry Lett., 12, 257-261
- Chemical constituents of Lactuca dregeana Michalska K., Kisiel W., Stojakowska A. 2015. Biochem. Syst. Ecol., 59, 302-304.
- Quantitative analysis of sesquiterpene lactones and thymol derivatives in extracts from Telekia speciosa Stojakowska A., Malarz J., Kisiel W. 2015. Phytochemistry Lett., 11, 378-383.
- Variation of sesquiterpene lactone contents in Lactuca georgica natural populations from Armenia Beharav A., Stojakowska A., Ben-David R., Malarz J., Michalska K., Kisiel W. 2015. Genet. Resour. Crop Evol., 62, 431-441.
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Chemical constituents from Lactuca inermis, a wild African species.
Michalska K., Kisiel W.
Biochem. Syst. Ecol., 2014, 55, 104-106.
interests
techniques
- 1H and 13C nuclear magnetic resonance (one- and two-dimensional techniques – HSQC, HMBC, COSY, NOESY)
- centrifugally accelerated TLC
- conventional column chromatography
- direct organogenesis
- hairy root cultures
- HPLC UV
- indirect organogenesis
- mass sectroscopy
- plant tissue cultures
- spectroscopy UV-VIS
- thin-layer chromatography
- undifferentiated (callus and cell suspension) cultures