Items where Author is "Stefova, Marina"

Bogeva, Elena and Ivanova, Violeta and Stafilov, Trajče and Stefova, Marina and Siegmund, Barbara and Lankmayr, Ernst (2018) Determination of aroma compounds in Vranec wines produced with different oenological practices. In: 25th Congress of SCTM, 19-22 Sept 2018, Ohrid, R. Macedonia.

Ivanova, Violeta and Stafilov, Trajče and Stefova, Marina and Lankmayr, Ernst and Kilár, Ferenc (2017) Phenolic, volatile and elemental composition of Macedonian wines. In: 17th International Symposium and Summer School on Bioanalysis, 2-8 July 2017, Ohrid, R. Macedonia.

Tasev, Krste and Ivanova, Violeta and Stefova, Marina (2017) Ultra-Performance Liquid Chromatography-Triple Quadruple Mass Spectrometry (UPLC-TQ/MS) for Evaluation of Biogenic Amines in Wine. Food Analytical Methods, 10 (12). pp. 4038-4048. ISSN 1936-9751

Ivanova, Violeta and Dimovska, Violeta and Stefova, Marina and Tasev, Krste and Balabanova, Biljana and Ilieva, Fidanka and Petreska Stanoeva, Jasmina (2016) Biogenic aminies and aroma in Vranec wines from Macedonia and Montenegro and effect of malolactic fermentation on their formation. [Project]

Tasev, Krste and Ivanova, Violeta and Stefova, Marina (2016) Optimization and validation of a derivatization method for analysis of biogenic amines in wines using RP-HPLC-DAD. Macedonian Journal of Chemistry and Chemical Engineering, 35 (1). pp. 19-28. ISSN 1857-5552

Tasev, Krste and Stefova, Marina and Ivanova, Violeta (2016) HPLC method validation and application for organic acid analysis in wine after solid-phase extraction. Macedonian Journal of Chemistry and Chemical Engineering, 35 (2). pp. 225-233. ISSN 1857 - 5552

Gulaboski, Rubin and Bogeski, Ivan and Kokoskarova, Pavlinka and Haeri, Haleh H. and Mitrev, Sasa and Stefova, Marina and Stanoeva, Jasmina Petreska and Markovski, Velo and Mirceski, Valentin and Hoth, Markus and Kappl, Reinhard (2016) New insights into the chemistry of Coenzyme Q-0: A voltammetric and spectroscopic study. Bioelectrochemistry, 111. pp. 100-108. ISSN 15675394

Ivanova, Violeta and Hermosín-Gutiérrez, Isidro and Boros, Borbala and Stefova, Marina and Stafilov, Trajče and Vojnoski, Borimir and Dörnyei, Ágnes and Kilár, Ferenc (2015) Phenolic compounds and antioxidant activity of Macedonian red wines. Journal of Food Composition and Analysis, 52. pp. 1-41. ISSN 0889-1575

Tasev, Krste and Ivanova, Violeta and Stefova, Marina (2014) Comparative determination of biogenic amines by HPLC-DAD and UPLC-TQ/MS techniques: advantages and disadvantages. In: 24 Congress of Chemists and Technologists of Macedonia, 11-14 Sep 2016, Ohrid, Macedonia.

Ivanova, Violeta and Bogeva, Elena and Stafilov, Trajče and Stefova, Marina and Siegmund, Barbara and Pabi, Nicole and Lankmayr, Ernst (2014) Study of the influence of maceration time and oenological practices on the aroma profile of Vranec wines. Food Chemistry, 165 (15). pp. 506-514. ISSN 0308-8146

Ivanova, Violeta and Dörnyei, Ágnes and Stefova, Marina and Stafilov, Trajče and Vojnoski, Borimir and Márk, László and Hermosín-Gutiérrez, Isidro and Kilár, Ferenc (2014) Application of a Novel Small-Scale Sample Cleanup Procedure Prior to MALDI-TOF-MS for Rapid Pigment Fingerprinting of Red Wines. Food Analytical Methods, 7 (4). pp. 820-827. ISSN 1936-9751

Tasev, Krste and Ivanova, Violeta and Stefova, Marina (2014) Determination of main organic acids in Macedonian wines by RP HPLC. In: 24th International Scientific-Expert Conference of Agriculture and Food Industry – Sarajevo, 25–28 Sept 2013, Sarajevo, Bosnia and Hercegovina.

Ivanova, Violeta and Wiltsche, Helmar and Stafilov, Trajče and Stefova, Marina and Motter, Herber and Lankmayr, Ernst (2013) Multi-element analysis of Macedonian wines by inductively coupled plasma–mass spectrometry (ICP–MS) and inductively coupled plasma–optical emission spectrometry (IP–OES) for regional classification. Macedonian Journal of Chemistry and Chemical Engineering, 32 (2). 265 -281. ISSN 1857-5552

Ivanova, Violeta and Wiltsche, Helmar and Stafilov, Trajče and Motter, Herber and Stefova, Marina and Lankmayr, Ernst (2013) Inductively coupled plasma - mass spectrometry (ICP-MS) and inductively coupled plasma – optical emission spectrometry (IP-OES) analysis of elements in Macedonian wines. In: 13th International Symposium and Summer School on BIoanalysis, 27June-7 July 2013, Debrecen, Hungary.

Gulaboski, Rubin and Bogeski, Ivan and Mirceski, Valentin and Saul, Stephanie and Pasieka, Bastian and Haeri, Haleh H. and Stefova, Marina and Petreska Stanoeva, Jasmina and Mitrev, Sasa and Hoth, Markus and Kappl, Reinhard (2013) Hydroxylated derivatives of dimethoxy-1,4-benzoquinone as redox switchable earth-alkaline metal ligands and radical scavengers. Scientific Reports (Nature), 3. pp. 1-8. ISSN 2045-2322

Ivanova, Violeta and Stefova, Marina and Vojnoski, Borimir and Stafilov, Trajče and Bíró, Ildiko and Bufa, Anita and Felinger, Attila and Kilár, Ferenc (2013) Volatile Composition of Macedonian and Hungarian Wines Assessed by GC/MS. Food and Bioprocess Technology, An International Journal, 6 (6). pp. 1609-1617. ISSN 1935-5130

Ivanova, Violeta and Vojnoski, Borimir and Stefova, Marina (2012) Effect of winemaking treatment and wine aging on phenolic content in Vranec wines. Journal of Food Science and Technology, 49 (2). pp. 161-172.

Ivanova, Violeta and Stefova, Marina and Vojnoski, Borimir and Beleski, Klime and Dimovska, Violeta (2012) Phenolic Content of Vranec Grapes During Ripening. In: 22nd Congress of Chemists and Technologists of Macedonia, 05-09, September, 2012, Ohrid, R. Macedonia.

Kostadinovic Velickovska, Sanja and Wilkens, Andrea and Stefova, Marina and Ivanova, Violeta and Vojnoski, Borimir and Mirhosseini, Hamed and Winterhalter, Peter (2012) Stilbene levels and antioxidant activity of Vranec and Merlot wines from Macedonia: effect of variety and enological practices. Food Chemistry, 135. pp. 3003-3009. ISSN 0308-8146

Ivanova, Violeta and Stefova, Marina and Stafilov, Trajče and Vojnoski, Borimir and Bíró, Ildiko and Bufa, Anita and Kilár, Ferenc (2012) Validation of a Liquid-liquid Extraction Method for Analysis of Wine Aroma Compounds with GC-MS. In: 12th International Symposium and Summer School on Bioanalysis, July, 4-14, 2012, Cluj-Napoca, Romania.

Ivanova, Violeta and Stefova, Marina and Stafilov, Trajče and Vojnoski, Borimir and Bíró, Ildiko and Bufa, Anita and Kilár, Ferenc (2012) Validation of a Method for Analysis of Aroma Compounds in Red Wine using Liquid–Liquid Extraction and GC–MS. Food Analytical Methods, 5. pp. 1427-1434.

Stefova, Marina and Ivanova, Violeta (2011) Analytical Methodology for Characterization of Grape and Wine Phenolic Bioactives. In: Fruit and Cereal Bioactives: Sources, Chemistry, and Applications. CRC Press, Taylor & Francis Group, pp. 409-427.

Bogeski, Ivan and Gulaboski, Rubin and Kappl, Reinhard and Mirceski, Valentin and Stefova, Marina and Petreska, Jasmina and Hoth, Markus (2011) Calcium Binding and Transport by Coenzyme Q. Journal of the American Chemical Society, 133 (24). pp. 9293-9303. ISSN 0002-7863

Ivanova, Violeta and Vojnoski, Borimir and Stefova, Marina (2011) Effect of the Winemaking Practices and Aging on Phenolic Content of Smederevka and Chardonnay Wines. Food and Bioprocess Technolog, 4. pp. 1512-1518.

Ivanova, Violeta and Stefova, Marina and Vojnoski, Borimir and Dörnyei, Ágnes and Márk, László and Dimovska, Violeta and Stafilov, Trajče and Kilár, Ferenc (2011) Identification of polyphenolic compounds in red and white grape varieties grown in R. Macedonia and changes of their content during ripening. Food Research International, 44. pp. 2851-2860.

Ivanova, Violeta and Stefova, Marina (2011) Phenolic Bioactives in Grapes and Grape-Based Products. In: Fruit and Cereal Bioactives: Sources, Chemistry, and Applications. CRC Press, Taylor & Francis Group, pp. 171-184.

Ivanova, Violeta and Boros, Borbala and Hermosín-Gutiérrez, Isidro and Stefova, Marina and Stafilov, Trajče and Vojnoski, Borimir and Dörnyei, Ágnes and Kilár, Ferenc (2011) Phenolic Composition, Colour and Antioxidant Activity of Vranec, Merlot and Cabernet Sauvignon Wines from R. Macedonia. In: International Symposium and Summer School on Bioanalysis, September, 18-28, 2011, Graz, Austria.

Ivanova, Violeta and Stefova, Marina and Stafilov, Trajče and Hermosín-Gutiérrez, Isidro (2011) Phenolic composition of red wines from Republic of Macedonia. In: IX Congress of Pure and Applied Chemistry of students from Republic of Macedonia, 06-09.10. 2011, Skopje, R. Macedonia.

Ivanova, Violeta and Boros, Borbala and Hermosín-Gutiérrez, Isidro and Stefova, Marina and Stafilov, Trajče and Vojnoski, Borimir and Dimovska, Violeta and Dörnyei, Ágnes and Kilár, Ferenc (2011) Phenolic composition, colour and antioxidant activity of Vranec, Merlot and Cabernet Sauvignon wines from R. Macedonia. In: 10th International Symposium and Summer School on Bioanalysis, September, 18-28, 2011, Graz, Austria.

Ivanova, Violeta and Dörnyei, Ágnes and Márk, László and Vojnoski, Borimir and Stafilov, Trajče and Stefova, Marina and Kilár, Ferenc (2011) Polyphenolic content of Vranec wines produced by different vinification conditions. Food Chemistry, 124. pp. 316-325.

Ivanova, Violeta and Dörnyei, Ágnes and Stefova, Marina and Stafilov, Trajče and Vojnoski, Borimir and Kilár, Ferenc and Márk, László (2011) Rapid MALDI-TOF-MS Detection of Anthocyanins in Wine and Grape Using Different Matrices. Food Analytical Methods, 4. pp. 108-115.

Ivanova, Violeta and Dörnyei, Ágnes and Márk, László and Kilár, Ferenc and Stafilov, Trajče and Vojnoski, Borimir and Stefova, Marina (2010) Application of MALDI-TOF-MS for detection of pigments in wine. In: 10th International Symposium and Summer School on Bioanalysis, 7-14, July, 2010, Zagreb, Croatia.

Ivanova, Violeta and Stefova, Marina and Chinnici, Fabio (2010) Determination of the polyphenol contents in Macedonian grapes and wines by standardized spectrophotometric methods. Journal of the Serbian Chemical Society, 75 (1). pp. 45-59.

Ivanova, Violeta and Meudec, Emmanuelle and Souquet, Jean-Marc and Vojnoski, Borimir and Cheynier, Veronique and Stefova, Marina (2010) HPLC analysis of hydroxycinnamic acid derivatives in Smederevka and Chardonnay wines. In: XXI Congress of Chemists and Technologists of Macedonia, 23-26, September, 2010, Ohrid, R. Macedonia.

Ivanova, Violeta and Souquet, Jean-Marc and Meudec, Emmanuelle and Vojnoski, Borimir and Stefova, Marina and Cheynier, Veronique (2010) Influence of maceration time, SO2 and yeast strain on the content of phenolic compounds in wines from Vranec and Merlot varieties. In: XXV the International Conference on Polyphenols, August, 24-27, 2010, Montpellier, France.

Ivanova, Violeta and Meudec, Emmanuelle and Souquet, Jean-Marc and Stefova, Marina and Cheynier, Veronique (2010) Influence of sample and mobile phase pH on HPLC-DAD-MS analysis of anthocyanins and other phenolic compounds in wine. In: XXVth International Conference on Polyphenols, August, 24-27, 2010, Montpellier, France.

Ivanova, Violeta and Kilár, Ferenc and Bíró, Ildiko and Bufa, Anita and Kostadinovic Velickovska, Sanja and Felinger, Attila and Vojnoski, Borimir and Stafilov, Trajče and Mukaetov, Duško and Stefova, Marina (2009) Aroma profile of Macedonian and Hungarian wines assessed by GC-MS. In: 8th Balaton Symposium on Hight-Performance Separation Methods and 15th International Symposium on Separation Science , Septeber, 2-4, 2009, Balaton, Hungary.

Ivanova, Violeta and Stefova, Marina and Vojnoski, Borimir (2009) Assay of the phenolic profile of Merlot wines from Macedonia: Effect of maceration time, storage, SO2 and temperature of storage. Macedonian Journal of Chemistry and Chemical Engineering, 28 (2). pp. 141-149. ISSN 1857 – 5552

Ivanova, Violeta and Dörnyei, Ágnes and Kilár, Ferenc and Márk, László and Vojnoski, Borimir and Boros, Borbala and Beleski, Klime and Stafilov, Trajče and Stefova, Marina (2009) HPLC-MS and Spectrophotometric Assay of the Phenolic Content of Macedonian Red and White Grape Varieties. In: 8th Balaton Symposium on High-Performance Separation Methods and 15th International Symposium on Separation Sciences, 2-4 Sept 2009, Balaton, Hungary.

Ivanova, Violeta and Dörnyei, Ágnes and Kilár, Ferenc and Vojnoski, Borimir and Stafilov, Trajče and Stefova, Marina (2009) Phenolic content of Macedonian grapes followed at different physiological stages. In: CEEPUS International Symposium and Summer Schools on Bioanalysis, 6-12, September, 2009, Blagoevgrad, Bulgaria.

Ivanova, Violeta and Dörnyei, Ágnes and Márk, László and Kilár, Ferenc and Stefova, Marina and Stafilov, Trajče and Vojnoski, Borimir (2008) Analysis of wine and grape samples with MALDI-TOF-MS. In: 9th International Symposium on Instrumental Analysis, June 29 - July 2, 2008, Pecs, Hungary.

Ivanova, Violeta and Milanov, Goran and Sarafimovska, Ana and Beleski, Klime and Stefova, Marina and Stafilov, Trajče (2008) HPLC determination of ogranic acids in Macedonian wines. In: 20th Congress of Chemists and Technologysts of Macedonia, 17-20, September, 2008, Ohrid, R. Macedonia.

Ivanova, Violeta and Zendelovska, Dragica and Stefova, Marina and Stafilov, Trajče (2008) HPLC method for determination of verapamil in human plasma after solid-phase extraction. Journal of Biochemical and Biophysical Methods, 70. pp. 1297-1303.

Ivanova, Violeta and Dörnyei, Ágnes and Márk, László and Kilár, Ferenc and Boros, Borbala and Stefova, Marina and Stafilov, Trajče and Vojnoski, Borimir (2008) MALDI-TOF and HPLC-DAD-ESI/MS identification of phenolic compounds in Macedonian wines and grapes. In: CEEPUS International Symposium and Summer Schools on Bioanalysis, 1-10, June, 2008, Nitra, Slovakia.

Ivanova, Violeta and Zendelovska, Dragica and Stefova, Marina (2005) HPLC determination of hydrochlorothiazide in urine after solid-phase extraction. Macedonian pharmaceutical bulletin, 51 (1,2). pp. 23-28. ISSN 1409 - 8695

Stefova, Marina and Ivanova, Violeta and Muratovska, Ilijana (2005) Identification and Quantification of Bis-GMA and Teg-DMA Released from Dental Materials by HPLC. Journal of Liquid Chromatography & Related Technologies, 28. pp. 289-295.

Stefova, Marina and Ivanova, Violeta and Muratovska, Ilijana (2004) HPLC analysis of Bis – GMA and Teg–DMA released from dental materials. In: XVIII Congress of Chemists and Technologists of Macedonia, 23-25, September, 2004, Ohrid, R. Macedonia.