Laboratory for chromatographic analysis

Instrumentation





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- GC×GC–TOF/MS - Pegasus 4D gas chromatograph, which enables the separation of volatile components and the separated analytes are identified with a mass spectrometer and a time-of-flight type analyzer,
- GC/MS - gas chromatograph with mass detector (single quadrupole),
- GC/FID/ECD - gas chromatograph with two detectors: universal (flame-ionization) and specific (with electron capture),
- HPLC-DAD-MSn - liquid chromatograph with two detectors: UV-Vis with diode array and mass spectrometer with ion trap,
- HPLC-DAD - liquid chromatograph with a UV-Vis detector with a diode array equipped with a fraction collector (semi-preparative).

- GC×GC–TOF/MS - Pegasus 4D gas chromatograph, which enables the separation of volatile components and the separated analytes are identified with a mass spectrometer and a time-of-flight type analyzer,

- GC/MS - gas chromatograph with mass detector (single quadrupole),

- GC/FID/ECD - gas chromatograph with two detectors: universal (flame-ionization) and specific (with electron capture),

- HPLC-DAD-MSn - liquid chromatograph with two detectors: UV-Vis with diode array and mass spectrometer with ion trap,

- HPLC-DAD - liquid chromatograph with a UV-Vis detector with a diode array equipped with a fraction collector (semi-preparative).

more

Laboratory for chromatographic analysis

The laboratory for chromatographic analyzes was established in 2020 by the unification of:
- The laboratory for analysis of organic substances in complex matrices (project for equipping laboratories of the Government of the Republic of Macedonia)
- The laboratory for liquid chromatography (equipped within the project of the Seventh Framework Program of the European Commission REINFORCEMENT OF THE WBC RESEARCH CAPACITIES FOR FOOD QUALITY CHARACTERIZATION, implemented from 2008-2011, https://cordis.europa.eu/project/id/ 204756),
- The laboratory for the analysis of hexachlorocyclohexanes (equipped within the project implemented by UNOPS "Nordic Support for Progress of North Macedonia" financed by the Kingdom of Norway, implemented in 2020-21)

Interest:

Identification and quantification of organic substances in various samples:
- analysis of pesticides and other substances from the European priority list in the environment (water, soil, air),
- analysis of harmful substances in food products and packaging,
- analysis of harmful substances in food products as well as in consumer products,
- analysis of phenolic components in different samples of plant origin (fruits, apples, juices, wine, etc.),
- analysis of bioactive compounds in medicinal and aromatic plants,
- analysis of pharmaceutical preparations and raw materials for the characterization of active components and impurities,
- analysis of forensic samples (drugs and psychotropic substances, explosives, etc.).

 

The laboratory is accredited in accordance with the MKS EN ISO 17025: 2018 standard for testing organochlorine pesticides in air and organochlorine pesticides and polychlorinated biphenyls in soil. The accreditation certificate no. LT-089 can be seen here: link to sertificate (iarm.gov.mk).

List of selected publcations

  1. D. Krasniqi, A. Uka, E. Rexhbeqaj, G. Beretta, J. Petreska Stanoeva, B. Qazimi, A. Daci, Vasorelaxant effects of ethanolic extract from Cydonia oblonga Mill. Leaves on isolated rat thoracic aorta and potential mechanism of action, Natural Product Communications, 2024, 19(9), 1–5. https://doi.org/10.1177/1934578X241282441, IF(2023) = 1,5.
  2. O. Tusevski, M. Todorovska, J. Petreska Stanoeva, S. Gadzovska Simic, Phytochemical analysis, biological activities, and docking of phenolics from shoot cultures of Hypericum perforatum L. transformed by Agrobacterium rhizogenes, Molecules, 2024, 29, 3893, 1-24. https://doi.org/10.3390/molecules29163893 https://www.mdpi.com/journal/molecules IF (2023) = 4,2
  3. J. Petreska Stanoeva, C. Stojchevski, V. Bankova, M. Stefova, Phenolic fingerprint of Macedonian propolis, Macedonian Journal of Chemistry and Chemical Engineering, 2024, 1, 87–98. https://doi.org/10.20450/mjcce.2024.2862. IF (2023) = 1
  4. E. Rafailovska, O. Tusevski, S. Gadzovska-Simic, S. Panov, J. Petreska Stanoeva, S. Dinevska-Kjovkarovska, B. Miova Regulation of carbohydrate metabolism and insulin secretion in diabetic rats following treatment with Hypericum perforatum L. hairy root aqueous methanol extract, Macedonian Journal of Chemistry and Chemical Engineering, 2024, 1, 75–86. https://doi.org/10.20450/mjcce.2024.2849. IF (2023) = 1
  5. O. Tusevski, M. Todorovska, I. Todorovska, J. Petreska Stanoeva, S. Gadzovska Simic, Photoperiod modulates the production of biologically active compounds in Hypericum perforatum L. hairy roots: an in vitro and in silico approach, Plant Cell, Tissue and Organ Culture, 2024, 156, 96; https://doi.org/10.1007/s11240-024-02722-8. IF(2023)=2,3
  6. O. Tusevski, M. Todorovska, I. Todorovska, J. Petreska Stanoeva, S. Gadzovska Simic, Production of phenylpropanoids, naphthodianthrones and antioxidant status of Hypericum perforatum L. transgenic shoots, Horticulturae, 2024, 10(1), 59; https://doi.org/10.3390/horticulturae10010059. IF(2023)=3,1
  7. V Mula, J. Bogdanov, J. Petreska Stanoeva, L. Zeneli, Z. Zdravkovski, Monitoring volatile organic compounds in air using passive sampling: regional cross-border study between N. Macedonia and Kosovo, Aerosol and Air Quality Research, 2024, 24, 230170, 1-12. https://doi.org/10.4209/aaqr.230170. IF(2023)=2,5
  8. J. Petreska Stanoeva, V. Damjanovski, M. Cichna-Markl, M. Stefova, Anthocyanin fingerprinting as an authentication testing tооl for blueberry, aronia and pomegranate juices, European Food Research and Technology, 2024. 250, 751–762 https://doi.org/10.1007/s00217-023-04416-5. IF (2023) = 3,0
  9. M. Cvetanoska, M. Pocrnić, M. Stefova, N. Galić, J. Petreska Stanoeva, UHPLC-Q-TOF analysis of pyrrolizidine alkaloids in North-Macedonian honey, Food Additives & Contaminants: Part B, 2024, 17 (1), 5–15. https://doi.org/10.1080/19393210.2023.2266701. IF (2023) = 2,5
  10. H. Koraqi, B. Qazimi, W. Khalid, J. Petreska Stanoeva, A. Sehrish, F. Siddique, C. Çesko, K. A. Khan, M. A. Rahim, I. Hussain, E. Zongo, Optimized conditions for extraction, quantification and detection of bioactive compound from Nettle (Urtica dioica L.) using the deep eutectic solvents, ultra-sonication and liquid chromatography-mass spectrometry (LC-DAD-ESI-MS/MS), International Journal of Food Properties, 2023, 26 (1), 2171–2185. https://doi.org/10.1080/10942912.2023.2244194. IF (2022) = 2,9
  11. K. Danova, J. Petreska Stanoeva, I. Aneva, K. Alipieva, M. Stefova, Plant growth regulators and activated charcoal selectively affect phenylethanoid and flavone glycoside accumulation in Sideritis scardica Griseb. Tissue culture, Plants, 2023, 12, 254, 1–17, https://doi.org/10.3390/plants12132541. IF (2022) = 4,5
  12. Z. Lozanovski, J. Petreska Stanoeva, J. Bogdanov, Development of a spectrophotometric method for assessment of the relative reactivity of monocarbonyl analogs of curcumin with 2-(dimethylamino)ethanethiol, Macedonian Journal of Chemistry and Chemical Engineering, 2023, 1, 13–24. https://doi.org/10.20450/mjcce.2023.2638 IF (2023) = 1
  13. J. Petreska Stanoeva, M. Stefova, V. Matevski, Extraction, distribution and diversity of phenolic compounds in most widespread Boraginaceae species from Macedonia, Chemistry and Biodiversity, 2023, e202201149, 1–14,  https://doi.org/10.1002/cbdv.202201149. IF (2023) = 3,4
  14. B. Qazimi, J. Petreska Stanoeva, M. Cvetanoska, N. Geskovski, S. Dragusha, H. Koraqi, V. Qazimi, V. Ejupi, Phenolic compounds composition of Sambucus nigra wild growing plants from Kosovo, Turkish Journal of Pharmaceutical Sciences, 2023, 20 (6) 380–389. https://doi.org/10.4274/tjps.galenos.2023.60562. IF (2023) = 1,8
  15. O. Tusevski, M. Todorovska, J. Petreska Stanoeva, M. Stefova, S. Gadzovska Simic, In vitro and in silico insights on the biological activities, phenolic compounds composition of Hypericum perforatum L. hairy root cultures, Phyton – International Journal of Experimental Botany, 2023, 92 (3), 921–941. https://doi.org/10.32604/phyton.2023.024995 IF (2023) = 1,3
  16. I. Sofronievska, J. Petreska Stanoeva, J. Bogdanov, M. Stefova, Assay of volatile organic compounds in urban air using passive sampling and gas chromatography coupled to mass spectrometry, Macedonian Journal of Ecology and Environment, 2022, 24 (2), 103–113.
  17. J. Petreska Stanoeva, E. Stefova, M. Cvetanoska, J. Bogdanov, Establishing mass spectral fragmentation patterns for the characterization of 1,2 -unsaturated pyrrolizidine alkaloids and N-oxides in Boraginaceae species from Macedonia using LC-ESI-MS/MS, Macedonian Journal of Chemistry and Chemical Engineering, 2022, 41 (1), 99–110. https://doi.org/10.20450/mjcce.2022.2491, IF (2021) = 0,829
  18. E. Stefova, M. Cvetanoska, J. Bogdanov, V. Matevski, J. Petreska Stanoeva, Assessment of distribution and diversity of pyrrolizidine alkaloids in the most prevalent Boraginaceae species in Macedonia, Chemistry and Biodiversity, 2022, 19, e202200066, 1–14. https://doi.org/10.1002/cbdv.202200066. IF (2021) = 2,745
  19. M. Bogojovska, M. Stefova, J. Petreska Stanoeva, V. Bankova, M. Popova, Polyphenols and minor constituents in honey from North Macedonia and Bulgaria, Proceedings of the Bulgarian Academy of Sciences, 2022, 75 (2), 207–215. https://doi.org/10.7546/CRABS.2022.02.05, IF (2021) = 0,329
  20. J. Petreska Stanoeva, M. Stefova, J. Bogdanov, Systematic HPLC/DAD/MSn study on the extraction efficiency of polyphenols from black goji: Citric and ascorbic acid as alternative acid components in the extraction mixture, Journal of Berry Research, 2021, 11 (4), 611–630. https://doi.org/10.3233/JBR-210717, IF (2020) = 2,16
  21. D. Gerginova, S. Simova, M. Popova, M. Stefova, J. Petreska Stanoeva, V. Bankova, NMR Profiling of North Macedonian and Bulgarian Honeys for Detection of Botanical and Geographical Origin, Molecules, 2020, 25, 4687; https://doi.org/10.3390/molecules25204687. IF (2020) = 4,411.
  22. J. Petreska Stanoeva, E. Balshikevska, M. Stefova, O. Tusevski, S. G. Simic, Comparison of the effect of acids in solvent mixtures for extraction of phenolic compounds from Aronia melanocarpa, Natural Product Communications, 2020, 15(7), 1–10. https://doi.org/10.1177/1934578X20934675 IF (2020) = 0,96.
  23. D. Raičević, T. Popović, V. Ivanova-Petropulos, J. Petreska Stanoeva, V. Maraš, HPLC-DAD-ESI/MS monitoring of stilbenes content in Vranac red wines produced with traditional and modern fermentation methods, Macedonian Journal of Chemistry and Chemical Engineering, 2020, 39(1), 49–58. https://doi.org/10.20450/mjcce.2020.1970 IF (2020) = 0,70.
  24. J. Petreska Stanoeva, M. Stefova, B. Trusheva, M. Popova, D. Antonova, V. Bankova, Comparison between Bulgarian and Macedonian propolis: chemical composition and plant origin, Macedonian pharmaceutical bulletin, 2020, 66 (2) 11–14. DOI:10.33320/maced.pharm.bull.2020.66.02.002.
  25. B. Qazimi, J. Petreska Stanoeva, Gj. Stefkov, S. Dragusha, V. Ejupi, M. Stefova, S.Kulevanova, Determination of phenolic compounds in methanolic extracts of flowering stems and rosette leaves of Sideritis raeseri, Macedonian Pharmaceutical Bulletin, 2020, 66 15–16. DOI: 10.33320/maced.pharm.bull.2020.66.04.007.
  26. J. Petreska Stanoeva, N. Peneva, M. Stefova, V. Gjamovski, Identification and quantification of phenolic compounds in pomegranate juices from eight Macedonian cultivars, Macedonian Journal of Chemistry and Chemical Engineering, 2019, 38(2), 149–160.   https://doi.org/10.20450/mjcce.2019.1775, IF (2019) = 0,83
  27. O. Tusevski, J. Petreska Stanoeva, Marina Stefova, M. Spasenoski, S. Gadzovska Simic, State of antioxidant systems and phenolic compounds’ production in Hypericum perforatum L. hairy roots, Acta Physiologiae Plantarum, 2019, 41:132, 1-15. https://doi.org/10.1007/s11738-019-2919-5 IF (2019) = 1,93
  28. O. Tusevski, M. Krstikj, J. Petreska Stanoeva, M. Stefova, S. Gadzovska Simic, Phenolic compounds composition of Hypericum perforatum L. wild-growing plants from the Republic of Macedonia, Agriculturae Conspectus Scientificus, 2019, 1, 67–75. IF (2019) = 0,30
  29. M. Karapandzova, Gj. Stefkov, I. Cvetkovikj Karanfilova, T. Kadifkova Panovska, J. Petreska Stanoeva, M. Stefova, S. Kulevanova, Chemical characterization and antioxidant activity of mountain pine (Pinus mugo Turra, Pinaceae) from Republic of Macedonia, Records of Natural Products, 2019, 13, 50–63. https://doi.org/10.25135/rnp.73.18.02.233
  30. M. Stefova, A. Petkovska, S. Ugarkovic, J. Petreska Stanoeva, Strategy for optimized use of LC-MSn for determination of the polyphenolic profiles of apple peel, flesh and leaves, Arabian Journal of Chemistry, 2019, 12, 5180–5186. https://doi.org/10.1016/j.arabjc.2016.12.009
  31. O. Tusevski, M. Krstikj, J. Petreska Stanoeva, M. Stefova, S. Gadzovska Simic, Phenolic profile and biological activity of Hypericum perforatum L.: Can roots be considered as a new source of natural compounds?, South African Journal of Botany, 2018, 117, 301–310. https://doi.org/10.1016/j.sajb.2018.05.030
  32. J. Petreska Stanoeva, M. Stefova, K. Baceva Andonovska, A. Vankova, T. Stafilov, Phenolics and mineral content in bilberry and bog bilberry from Macedonia, International Journal of Food Properties, 2017, 20, S863–S883. https://doi.org/10.1080/10942912.2017.1315592
  33. O. Tusevski, B. Vinterhalter, D. Krstić Milošević, M. Soković,·A. Ćirić, D. Vinterhalter, S. Zdravković Korać, J. Petreska Stanoeva, M. Stefova, S. Gadzovska Simic, Production of phenolic compounds, antioxidant and antimicrobial activities in hairy root and shoot cultures of Hypericum perforatum L, Plant Cell Tiss Organ Cult, 2017, 128, 589–605. https://doi.org/10.1155/2013/602752
  34. A. Petkovska, V. Gjamovski, J. Petreska Stanoeva, M. Stefova, Characterization of the Polyphenolic Profiles of Peel, Flesh and Leaves of Malus domestica Cultivars Using UHPLC-DAD-HESI-MSn Natural Product Communications, 2017, 12, 35–42. https://doi.org/10.1177/1934578X1701200111
  35. J. Petreska Stanoeva, M. Stefova, K. Bačeva Andonovska, T. Stafilov, LC/DAD/MSn and ICP-AES Assay and Correlations between Phenolic Compounds and Toxic Metals in Endemic Thymus alsarensis from the Thallium Enriched Allchar Locality, Natural Product Communications, 2017, 12, 167–170. https://doi.org/10.1177/1934578X1701200206
  36. R. Gulaboski, I. Bogeski, P. Kokoskarova, H.H. Haeri, S. Mitrev, M. Stefova, J. Petreska Stanoeva, V. Markovski, V. Mirčeski, M. Hoth, R. Kappl, New insights into the chemistry of Coenzyme Q-0: A voltammetric and spectroscopic study, Bioelectrochemistry, 2016, 111, 100–108. https://doi.org/10.1016/j.bioelechem.2016.05.008
  37. O. Tusevski, J. Petreska Stanoeva, E. Markoska, N. Brndevska, M. Stefova, S. Gadzovska Simic, Callus cultures of Hypericum perforatum L. a novel and efficient source for xanthone production, Plant Cell Tissue and Organ Culture, 2016, 125, 309–319. https://doi.org/10.1155/2013/602752
  38. J. Petreska Stanoeva, M. Stefova, Gj. Stefkov, S. Kulevanova, K. Alipieva, V. Bankova, I. Aneva, Lj. N. Evstatieva, Chemotaxonomic contribution to the Sideritis species dilemma on the Balkans, Biochemical Systematics and Ecology, 2015, 61, 477–487. https://doi.org/10.1016/j.bse.2015.07.008
  39. M. Karapandzova, Gj. Stefkov, I. Cvetkovikj, J. Petreska Stanoeva, M. Stefova, S. Kulevanova, Flavonoids and other phenolic compounds in needles of Pinus peuce and other pine species from the Macedonian Flora, Natural Product Communications, 2015, 10, 987–990. https://doi.org/10.1177/1934578X1501000647
  40. O. Tusevski, J. Petreska Stanoeva, M. Stefova, S. Gadzovska Simic, Agrobacterium enhances xanthone production in Hypericum perforatum cell suspensions, Plant Growth Regulation, 2015, 76, 199–210. https://doi.org/10.1007/s10725-014-9989-6
  41. A. Ibraliu, A. Trendafilova, B. D. Anđelković, B. Qazimi, D. M. Gođevac, D. Shengjergji, E. Bebeci, Gj. Stefkov, G. Zdunic, Ina I. Aneva, I. Pasho, J. Petreska Stanoeva, K. I. Alipieva, K. Savikin, Lj. N. Evstatieva, N. Menkovic, M. Stefova, M Popova, M. B. Jadranin, M. N. Todorova, P. Denev, S. Kulevanova, V. S. Bankova, V. Gurazi, V. Papajani-Toska, Comparative Study of Balkan Sideritis Species from Albania, Bulgaria and Macedonia, European Journal of Medicinal Plants, 2015, 5, 328–340. https://doi.org/10.9734/EJMP/2015/14389
  42. Gj. Stefkov, S. Hristovski, J. Petreska Stanoeva, M. Stefova, Lj. Melovski,
    S. Kulevanova, Resource assessment and economic potential of bilberries (Vaccinium myrtillus and Vaccinium uliginosum) on Osogovo Mtn., R. Macedonia, Industrial Crops and Products, 2014, 61, 145–150. https://doi.org/10.1016/j.indcrop.2014.06.053
  43. O. Tusevski, J. Petreska Stanoeva, M. Stefova, D. Pavokovic, S. Gadzovska Simic, Identification and quantification of phenolic compounds in Hypericum perforatum L. transgenic shoots, Acta Physiologiae Plantarum, 2014, 36, 2555–2569. https://doi.org/10.1007/s11738-014-1627-4
  44. M. Murati, N. Oturan, Z. Zdravkovski, J. Petreska Stanoeva, S. Efremova Aaron, J.J. Aaron, M.A. Oturan, Application of the electro-Fenton process to mesotrione aqueous solutions: kinetics, degradation pathways, mineralization, and evolution of toxicity, Macedonian Journal of Chemistry and Chemical Engineering, 2014, 33, 121–137. https://doi.org/10.20450/mjcce.2014.407
  45. Gj. Stefkov, B. Miova, S. Dinevska-Kjovkarovska, J. Petreska Stanoeva, M. Stefova, G. Petrusevska, S. Kulevanova, Chemical characterization of Centaurium erythrea L. and its effects on carbohydrate and lipid metabolism in experimental diabetes, Journal of Ethnopharmacology, 2014, 152, 71–77. https://doi.org/10.1016/j.jep.2013.11.047
  46. I. Mitreski, J. Petreska Stanoeva, M. Stefova, Gj. Stefkov, S. Kulevanova, Polyphenols in Representative Teucrium Species in the Flora of R. Macedonia: LC/DAD/ESI-MSn Profile and Content, Natural Product Communications, 2014, 9, 175–180. https://doi.org/10.1177/1934578X1400900211
  47. O. Tusevski, J. Petreska Stanoeva, M. Stefova, S. Gadzovska Simic, Phenolic profile of dark-grown and photoperiod-exposed Hypericum perforatum L. hairy root cultures, The Scientific World Journal, 2013, http://www.hindawi.com/journals/tswj/aip/602752/.
  48. J. Petreska Stanoeva, M. Stefova, Assay of urinary excretion of polyphenols after ingestion of a cup of Mountain Tea (Sideritis scardica) measured by HPLC-DAD-ESI-MS/MS, Journal of Agricultural and Food Chemistry, 2013, 61, 10488–10497. https://doi.org/10.1021/jf403052w
  49. O. Tusevski, J. Petreska Stanoeva, M. Stefova, Dz. Kungulovski, N. Atanasova Pancevska, N. Sekulovski, S. Panov, S. Gadzovska Simic, Hairy roots of Hypericum perforatum L.: a promising system for xanthone production, Central European Journal of Biology, 2013, 8, 1010–1022. https://doi.org/10.2478/s11535-013-0224-7
  50. R. Gulaboski, I. Bogeski, V. Mirceski, S. Saul, B. Pasieka, H. H. Haeri, M. Stefova, J. Petreska Stanoeva, S. Mitrev, M. Hoth, R. Kappl, Hydroxylated derivatives of dimethoxy-1,4-benzoquinone as redox switchable earth-alkaline metal ligands and radical scavengers, Scientific Reports, 2013, 1865, 1–8. https://doi.org/10.1038/srep01865
  51. P. D. Mitev, P. A. Bopp, J. Petreska, K. Coutinho, H. Agren, Lj. Pejov, K. Hermansson, Different structures give similar vibrational spectra: The case of OH– in aqueous solution, The Journal of Chemical Physics, 2013, 138, 064503, 1–10. https://doi.org/10.1063/1.4775589
  52. I. Cvetkovikj, G. Stefkov, J. Acevska, J. Petreska Stanoeva, M. Karapandzova, M. Stefova, A. Dimitrovska, S. Kulevanova, Polyphenolic characterization and chromatographic methods for fast assessment of culinary Salvia species from South East Europe, Journal of Chromatography A, 2013, 1282, 38–45. https://doi.org/10.1016/j.chroma.2012.12.068
  53. Proceesings: O. Tusevski, J. Petreska Stanoeva, M. Stefova, Dz. Kungulovski, N. Atanasova Pancevska, S. Panov, S. Gadzovska-Simic, Xanthone production in Hypericum perforatum hairy root cultures transformed with Agrobacterium rhizogenes A4, Proceedings, Conference on Medicinal and Aromatic plants of South East European Countries, 7th CMAPSEEC, 2012, 381–388. https://doi.org/10.13140/2.1.1793.5363
  54. S. Gadzovska-Simic, O. Tusevski, S. Antevski, N. Atanasova-Pancevska, J. Petreska, M. Stefova, D. Kungulovski, M. Spasenoski, Secondary metabolite production in Hypericum perforatum L. cell suspensions upon elicitation with fungal mycelia from aspergillus flavus. Archives of Biological Sciences, Belgrade, 2012, 64, 113–121. https://doi.org/10.2298/ABS1201113G
  55. J. Petreska Stanoeva, M. Stefova, Evaluation of the ion trap MS performance for quantication of flavonoids and comparison to UV detection, Journal of Mass Spectrometry, 2012, 47, 1395–1406. https://doi.org/10.1002/jms.3053
  56. J. Petreska Stanoeva, D. Bagashovska, M. Stefova, Characterization of urinary bioactive phenolic metabolites excreted after consumption of a cup of mountain tea (Sideritis scardica) using liquid chromatography – tandem mass spectrometry. Macedonian Journal of Chemistry and Chemical Engineering 2012, 229–243. https://doi.org/10.20450/mjcce.2012.41
  57. J. Petreska, M. Stefova, F. Ferreres, D. A. Moreno, F. A. Tomás-Barberán, G. Stefkov, S. Kulevanova, A. Gil-Izquierdo, Dietary burden of phenolics per serving of “Mountain Tea” (Sideritis) from Macedonia and correlation to antioxidant activity. Natural Product Communications, 2011, 6, 1305–1314. . https://doi.org/10.1177/1934578X1100600924
  58. I. Bogeski, R. Gulaboski, R. Kappl, V. Mirceski, M. Stefova, J. Petreska, M. Hoth, Calcium Binding and Transport by Coenzyme Q. Journal of the American Chemical Society, 2011, 133, 9293–9303. https://doi.org/10.1021/ja110190t
  59. M. Kajdžanoska, J. Petreska, M. Stefova, Comparison of different extraction solvent mixtures for characterization of phenolic compounds in strawberries. Journal of Agricultural and Food Chemistry, 2011, 59 (10), 5272–5278.
    https://doi.org/10.1021/jf2007826
  60. J. Petreska, G. Stefkov, S. Kulevanova, K. Alapieva, V. Bankova, M. Stefova, Phenolic compounds of mountain tea from the Balkans: LC/DAD/ESI/MSn profile and content. Natural Product Communications, 2011 (6), 21–30. https://doi.org/10.1177/1934578X1100600
  61. J. Petreska, M. Stefova, F. Ferreres; D.A. Moreno; F.A. Tomás-Barberán; G. Stefkov, S. Kulevanova, A. Gil-Izquierdo, Potential bioactive phenolics of Macedonian Sideritis species used for medicinal “Mountain Tea”. Food Chemistry, 2011 (125), 13–20. https://doi.org/10.1016/j.foodchem.2010.08.019
  62. K. Alipieva, J. Petreska, A. G. Izquierdo, M. Stefova, Lj. Evstatieva, V. Bankova, Influence of the Extraction Method on the Yield of Flavonoids and Phenolics from Sideritis spp. (Pirin Mountain tea). Natural Product Communications, 2010 (5), 51–54. https://doi.org/10.1177/1934578X1000500113


Contact:
Prof. Marina Stefova, PhD
Phone: 324-9934
E-mail:  marinaiv@pmf.ukim.mk

 Prof. Jane Bogdanov, PhD
Phone. 324-9915
E-mail:  jane.bogdanov@pmf.ukim.mk

 Prof. Jasmina Petreska Stanoeva 
Phone. 324-9935
E-mail:  jasmina.petreska@pmf.ukim.mk

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