Dr. Nadezhda  Traycheva Petkova

Dr. Nadezhda Traycheva Petkova

Chief Assistant Professor
University of Food Technology, Bulgaria


Highest Degree
Ph.D. in Organic Chemistry from University of Food Technology, Bulgaria

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Area of Interest:

Chemistry
100%
Organic Chemistry
62%
Microbiology
90%
Bacteriology
75%
Food Science
55%

Selected Publications

  1. Petkova, N., D. Vassilev, R. Grudeva, Y. Tumbarski, I. Vasileva, M. Koleva and P. Denev, 2018. “Green” synthesis of sucrose octaacetate and characterization of its physicochemical properties and antimicrobial activity. Chem. Biochem. Eng. Quart., 31: 395-402.
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  2. Tzaneva, D., M. Djivoderova, N. Petkova, P. Denev, D. Hadzhikinov and A. Stoyanova, 2017. Rheological properties of the cosmetic gel including carboxymethyl chitosan. J. Pharmaceut. Sci. Res., 9: 1383-1387.
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  3. Tzaneva, D., A. Simitchiev, N. Petkova, V. Nenov, A. Stoyanova and P. Denev, 2017. Synthesis of carboxymethyl chitosan and its rheological behaviour in pharmaceutical and cosmetic emulsions. J. Applied Pharmaceut. Sci., 7: 70-78.
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  4. Tumbarski, Y., V. Lincheva, N. Petkova, R. Nikolova, R. Vrancheva and I. Ivanov, 2017. Antimicrobial activity of extract from aerial parts of Potentilla (Potentilla reptans L.). Ind. Technol., 4: 37-43.
  5. Tsaneva, D., M. Nikolova, T. Prokopov, N. Petkova, A. Stoyanova and P. Denev, 2017. Evaluation of adsorption capacity of chitosan-cinnamaldehyde Schiff base. J. Pharmaceut. Sci. Res., 9: 1609-1614.
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  6. Popova, A.T., N.T. Petkova, D.S. Mihaylova and I.N. Alexieva, 2017. Carbohydrate content and in vitro antioxidant capacity of different extracts of fresh Bulgarian Portulaca oleracea L. AgroFOOD Ind. Hi Tech, 28: 52-55.
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  7. Petrova, I., N. Petkova, M. Ognyanov, A. Simitchiev, M. Todorova and P. Denev, 2017. Food emulsions with amidated pectin from celery (Apium graveolens var. rapaceum D.C.) tubers. Agric. Sci. Technol., 9: 246-250.
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  8. Petkova, N., Y. Tumbarski, I. Ivanov and P. Denev, 2017. Design of inulin acetates with potential antimicrobial activity. Bulgarian J. Vet. Med., 20: 13-17.
  9. Petkova, N., L. Ivanova, G. Filova, I. Ivanov and P. Denev, 2017. Antioxidants and carbohydrate content in infusions and microwave extracts from eight medicinal plants. J. Applied Pharmaceut. Sci., 7: 55-61.
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  10. Petkova, N., I. Petrova, I. Ivanov, R. Mihov, R. Hadjikinova, M. Ognyanov and V. Nikolova, 2017. Nutritional and antioxidant potential of carob (Ceratonia siliqua) flour and evaluation of functional properties of its polysaccharide fraction. J. Pharmaceut. Sci. Res., 9: 2189-2195.
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  11. Petkova, N., I. Ivanov, R. Vrancheva, P. Denev and A. Pavlov, 2017. Ultrasound and microwave-assisted extraction of elecampane (Inula helenium) roots. Nat. Prod. Commun., 12: 171-174.
  12. Petkova, N., I. Ivanov, D. Mihaylova and A. Krastanov, 2017. Phenolic acids content and antioxidant capacity of commercially available Melissa officinalis L. teas in Bulgaria. Bulgarian Chem. Commun., 49: 69-74.
  13. Petkova, N., I. Ivanov and P. Denev, 2017. Polyphenolic content and antioxidant activity of different green tea brands available in the Bulgarian market-comparative study. Ind. Technol., 4: 26-32.
  14. Lincheva, V.B., N.T. Petkova and I.G. Ivanov, 2017. Optimization of biologically active substances extraction process from Potentilla reptans L. aerial parts. J. Applied Pharmaceut. Sci., 7: 174-179.
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  15. Ivanov, I., N. Petkova and P. Denev, 2017. Physicochemical characterization of pectin from orange peels obtained after different extraction conditions. Ind. Technol., 4: 21-25.
  16. Hadjikinova R., N. Petkova, D. Hadjikinov, P. Denev, D. Hrusavov, 2017. Development and validation of HPLC-RID method for determination of sugars and polyols. J. Pharmaceut. Sci. Res., 9: 1263-1269.
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  17. Vlaseva, R., M. Ivanova, M. Hadjikinova, D. Hadjikinov and V. Dobreva et al., 2016. Comparative characterization of possibilities of using low-esterified and amidated pectin in fermented dairy products. J. Microbiol. Biotechnol. Food Sci., 6: 649-651.
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  18. Vassilev, D., N. Petkova, M. Koleva and P. Denev, 2016. Ultrasound-assisted synthesis of sucrose and fructooligosaccharides esters as bio-plasticizers. J. Renew. Mater., 4: 24-30.
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  19. Tumbarski, Y., N. Petkova and I. Ivanov, 2016. Polyphenolic content, antioxidant activity and antimicrobial properties of leaf extracts from dandelion (Taraxacum officinale). Ind. Technol., 3: 141-145.
  20. Taneva, I., N. Petkova, I. Dimov, I. Ivanov and P. Denev, 2016. Characterization of rose hip (Rosa canina L.) fruits extracts and evaluation of their in vitro antioxidant activity. J. Pharmacogn. Phytochem., 5: 35-38.
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  21. Petrova, I., N. Petkova and I. Ivanov, 2016. Five edible flowers-valuable source of antioxidants in human nutrition. Int. J. Pharmacogn. Phytochem. Res., 8: 604-610.
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  22. Petkova, N., I. Ivanov and P. Denev, 2016. Evaluation of extracts from nettle (Urtica dioica) roots and artichoke flower heads (Cynara scolymus L.) obtained by ultrasound and microwave irradiation. Ind. Technol., 3: 98-101.
  23. Petkova, N. and D. Mihaylova, 2016. Flower heads of Onopordum tauricum Willd. and Carduus acanthoides L-source of prebiotics and antioxidants. Emir. J. Food Agric., 28: 732-736.
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  24. Murdzheva, D., N. Petkova, M. Todorova, I. Vasileva, I. Ivanov and P. Denev, 2016. Microwave-assisted synthesis of methyl esters of alginic acids as potential drug carrier. Int. J. Pharmaceut. Clin. Res., 8: 1361-1368.
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  25. Murdzheva, D., I. Vasileva, N. Petkova, I. Ivanov, M. Todorova and P. Denev, 2016. Physicochemical properties of new alginic acids derivatives. Ind. Technol., 3: 59-66.
  26. Temkov, M., N. Petkova, P. Denev and A. Krastanov, 2015. Characterization of inulin from Helianthus tuberosus L. obtained by different extraction methods-comparative study. Scient. Works Univ. Food Technol., 62: 461-464.
  27. Petkova, N., R. Vrancheva, D. Mihaylova, I. Ivanov, A. Pavlov and P. Denev, 2015. Antioxidant activity and fructan content in root extracts from elecampane (Inula helenium L.). J. BioSci. Biotechnol., 4: 101-107.
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  28. Petkova, N., M. Ognyanov, M. Todorova and P. Denev, 2015. Ultrasound-assisted extraction and characterisation of inulin-type fructan from roots of elecampane (Inula helenium L.). Acta Scient. Nat., 1: 225-235.
  29. Petkova, N., I. Ivanov, S. Topchieva, P. Denev and A. Pavlov, 2015. Biologically active substances and in vitro antioxidant activity of different extracts from Dandelion (Taraxacum officinale) roots. Scient. Bull. Ser. F: Biotechnol, 19: 190-197.
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  30. Petkova, N., D. Mihaylova, P. Denev and A. Krastanov, 2015. Evaluation of biological active substances in flower heads of Carduus thoermeri Weinm. Rom. Biotechnol. Lett., 20: 10592-10599.
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  31. Manev, Z., N. Petkova, P. Denev, D. Ludneva and S. Zhelyazkov, 2015. Study the influence of dietary fiber on the rheology of alginate beads. Agric. Sci. Technol., 7: 137-140.
  32. Grozeva, N., D. Pavlov, N. Petkova, I. Ivanov and P. Denev et al., 2015. Characterisation of extracts from Stevia rebaudiana Bertoni leaves. Int. J. Pharmacogn. Phytochem. Res., 7: 1236-1243.
  33. Dimitrova, M., N.T. Petkova, P.P. Denev and I.N. Aleksieva, 2015. Carbohydrate composition and antioxidant activity of certain Morus species. Int. J. Pharmacogn. Phytochem. Res., 7: 621-627.
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  34. Vlaseva, R., M. Ivanova, P. Denev, M. Todorova and N. Petkova, 2014. Studying the possibilities to obtain functional lactic acid fermented dairy products enriched with dietary fibers. Acta Scient. Nat., 1: 117-122.
  35. Vlaseva, R., M. Ivanova, N. Petkova, M. Todorova and P. Denev, 2014. Analysis of fermented lactic acid dairy products enriched with inulin-type fructans. Scient. Bull. Ser. F: Biotechnol., 18: 145-149.
  36. Petrova, I., N. Petkova, K. Kyobashieva, P. Denev, A. Simitchiev, M. Todorova and N. Dencheva, 2014. Isolation of pectic polysaccharides from celery (Apium graveolens var. rapaceum D.C.) and their application in food emulsions. Turk. J. Agric. Nat. Sci., Special Issue-2: 1818-1824.
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  37. Petkova, N., R. Vrancheva, P. Denev, I. Ivanov and A. Pavlov, 2014. HPLC-RID method for determination of inulin and fructooligosacharides. Acta Scient. Nat., 1: 99-107.
  38. Denev, P., N. Petkova, I. Ivanov, B. Sirakov, R. Vrancheva and A. Pavlov, 2014. Determination of biologically active substances in taproot of common chicory (Cichorium intybus L.). Scient. Bull. Ser. F: Biotechnol., 18: 124-129.
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  39. Taneva, I., N. Petkova, K. Dobreva, I. Panchev and P. Denev, 2013. Isolation and characterization of pectic substances from Rosa canina L. Food Sci. Technol., 24: 38-40.