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1

Separation and quantitation of stevioside and rebaudioside a in plant extracts by normal-phase high performance liquid chromatography and thin-layer chromatography: A comparison

Boryana Nikolova-Damyanova, Vasya Bankova, Simeon Popov

Journal:

Phytochemical Analysis

Year:

1994

Language:

english

File:

PDF, 464 KB

english, 1994

2

Immunomodulatory action of propolis: IV. Prophylactic activity against Gram-negative infections and adjuvant effect of the water-soluble derivative

Valentin Dimov, Nina Ivanovska, Vassya Bankova, Simeon Popov

Journal:

Year:

1992

Language:

english

File:

PDF, 617 KB

english, 1992

3

Effect of lead ions on lipids and antioxidant complex activity of Capsicum annuum L leaves, pericarp and seeds

Kamen L Stefanov, Katya A Seizova, Stojan D Pandev, Nedyalka V Yanishlieva, Emma M Marinova, Lina A Tyankova, Liliana L Kuleva, Simeon S Popov

Journal:

Journal of the Science of Food and Agriculture

Year:

1995

Language:

english

File:

PDF, 527 KB

english, 1995

4

Mass spectrometry of iridoids

Simeon S. Popov, Nedyalka V. Handjieva

Journal:

Mass Spectrometry Reviews

Year:

1983

Language:

english

File:

PDF, 1.64 MB

english, 1983

5

Measurement of surface dew by optical sensor

Peitcho Popov, Simeon Sainov, Margarita Baeva

Journal:

Sensors and Actuators A: Physical

Year:

1996

File:

PDF, 277 KB

1996

6

Comparative analysis of the volatiles from flowers and leaves of three Gentiana species

Elka Georgieva, Nedjalka Handjieva, Simeon Popov, Luba Evstatieva

Journal:

Biochemical Systematics and Ecology

Year:

2005

Language:

english

File:

PDF, 137 KB

english, 2005

7

4α-Methyl Sterols from the Sponges Haliclona cinerea and Haliclona flavescens

Ivaylo Elenkov, Boryana Dragova, Stoitze Andreev, Simeon Popov

Journal:

Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology

Year:

1997

Language:

english

File:

PDF, 169 KB

english, 1997

8

Lipophylic Compounds from Euphorbia peplis L. - a Halophytic Plant from the Bulgarian Black Sea Coast

Ivanova, Albena, Khozin-Goldberg, Inna, Kamenarska, Zornitsa, Nechev, Jordan, Cohen, Zvi, Popov, Simeon, Stefanov, Kamen

Journal:

Zeitschrift für Naturforschung C

Year:

2003

Language:

english

File:

PDF, 91 KB

english, 2003

9

Changes in Lipid Composition After In-Vitro Selection for Glyphosate Tolerance in Tobacco

Stefanov, Kamen L., Djilianov, Dimitar L., Vassileva, Zarka Y., Batchvarova, Rositsa B., Atanassov, Atanas I., Kuleva, Liliana V., Popov, Simeon S.

Journal:

Pesticide Science

Year:

1996

Language:

english

File:

PDF, 458 KB

english, 1996

10

Lipid composition of the sponge Verongia aerophoba from the Canary Islands

Jordan Nechev, William W. Christie, Rafael Robaina, Fernando de Diego, Simeon Popov, Kamen Stefanov

Journal:

European Journal of Lipid Science and Technology

Year:

2002

Language:

english

File:

PDF, 99 KB

english, 2002

11

Chemical ionization mass spectrometry with amines as reactant gases. VIII—amine chemical ionization mass spectrometry of some steroids

Tsenka S. Milkova, Nevena N. Mollova, Simeon S. Popov

Journal:

Biological Mass Spectrometry = Journal of Mass Spectrometry (Wiley)

Year:

1991

Language:

english

File:

PDF, 362 KB

english, 1991

12

Chemical ionization mass spectrometry of some monoterpene gentianine alkaloids and their derivatives

Vasil A. Popov, Nevena N. Mollova, Simona M. Veleva, Simeon S. Popov

Journal:

Biological Mass Spectrometry = Journal of Mass Spectrometry (Wiley)

Year:

1992

Language:

english

File:

PDF, 392 KB

english, 1992

13

Ammonia/desorption chemical ionization mass spectrometry of some cyclopentane iridoid glucosides

Plamen A. Demirev, Nedjalka Handjieva, Houcine Saadi, Simeon S. Popov, Olga S. Reshetova, Boris V. Rozynov

Journal:

Journal of Mass Spectrometry

Year:

1991

Language:

english

File:

PDF, 264 KB

english, 1991

14

Two iridoids from Viburnum lantana

Nedyalka Handjieva, Iskra Baranovska, Bozhana Mikhova, Simeon Popov

Journal:

Year:

1988

Language:

english

File:

PDF, 337 KB

english, 1988

15

Iridoids from Plantago media

Houcine Saadi, Nedjalka Handjieva, Simeon Popov, Ljubka Evstatievat

Journal:

Year:

1990

Language:

english

File:

PDF, 212 KB

english, 1990

16

Iridoid glucosides from Linaria vulgaris

Emilia I. Ilieva, Nedjalka V. Handjieva, Simeon S. Popov

Journal:

Year:

1992

Language:

english

File:

PDF, 220 KB

english, 1992

17

Petrol-induced changes in the lipid and sterol composition of three microalgae

Georgi D Petkov, Sevdalina T Furnadzieva, Simeon S Popov

Journal:

Year:

1992

Language:

english

File:

PDF, 196 KB

english, 1992

18

Lipid and sterol changes in leaves of Haberlea rhodopensi and Ramonda serbica at transition from biosis into anabiosis and vice versa caused by water stress

Yuliana Markovska, Georgi Kimenov, Kamen Stefanov, Simeon Popov

Journal:

Year:

1992

Language:

english

File:

PDF, 520 KB

english, 1992

19

5-O-Allosylantirrinoside from Linaria species

Emilia Ilieva, Nedjalka Handjieva, Stefan Spassov, Simeon Popov

Journal:

Year:

1993

Language:

english

File:

PDF, 234 KB

english, 1993

20

Lipid and sterol changes in Zea mays caused by lead ions

Kamen Stefanov, Ivanka Popova, Eveline Kamburova, Tanja Pancheva, Georgi Kimenov, Liliana Kuleva, Simeon Popov

Journal:

Year:

1993

Language:

english

File:

PDF, 479 KB

english, 1993

21

Terpenoids and sterols in Cladophora vagabunda

Ivaylo Elenkov, Tamara Georgieva, Petia Hadjieva, Stefka Dimitrova-Konaklieva, Simeon Popov

Journal:

Year:

1995

Language:

english

File:

PDF, 237 KB

english, 1995

22

Two iridoid glucosides, 5-O-Menthiafoloylkickxioside and kickxin, from Kickxia Dum. species

Nedjalka Handjieva, Liljana Tersieva, Simeon Popov, Ljuba Evstatieva

Journal:

Year:

1995

Language:

english

File:

PDF, 217 KB

english, 1995

23

Effect of salinity on lipid composition of Cladophora vagabunda

Ivaylo Elenkov, Kamen Stefanov, Stefka Dimitrova-Konaklieva, Simeon Popov

Journal:

Year:

1996

Language:

english

File:

PDF, 393 KB

english, 1996

24

Macedonine, a non-glycosidic iridoid from Galium macedonicum

Maya Mitova, Nedjalka Handjieva, Stefan Spassov, Simeon Popov

Journal:

Year:

1996

Language:

english

File:

PDF, 187 KB

english, 1996

25

Iridoid glucosides from Galium album and G. lovcense

Nedjalka Handjieva, Maya Mitova, Mincho Ancev, Simeon Popov

Journal:

Year:

1996

Language:

english

File:

PDF, 244 KB

english, 1996

26

Minor and trace sterols in marine invertebrates: VI. Occurrence and possible origins of sterols possessing unusually short hydrocarbon side chains

Robert M.K. Carlson, Simeon Popov, Ian Massey, Claude Delseth, Eser Ayanoglu, Tomas H. Varkony, Carl Djerassi

Journal:

Bioorganic Chemistry

Year:

1978

Language:

english

File:

PDF, 1.73 MB

english, 1978

27

Gas phase tautomerism of tautomeric azo naphthols and related Schiff bases studied by mass spectrometry

Daniela Nedeltcheva, Boryana Damyanova, Simeon Popov

Journal:

Journal of Molecular Structure

Year:

2005

Language:

english

File:

PDF, 172 KB

english, 2005

28

Intraspecific variability in the alkaloid metabolism of Galanthus elwesii

Strahil Berkov, Borjana Sidjimova, Luba Evstatieva, Simeon Popov

Journal:

Year:

2004

Language:

english

File:

PDF, 292 KB

english, 2004

29

Triterpene saponins and iridoid glucosides from Galium rivale

Salvatore de Rosa, Carmine Iodice, Maya Mitova, Nedjalka Handjieva, Simeon Popov, Mincho Anchev

Journal:

Year:

2000

Language:

english

File:

PDF, 135 KB

english, 2000

30

Majoroside, an iridoid glucoside from Plantago major

Nedyalka Handjieva, Stephan Spassov, Gergana Bodurova, Houcine Saadi, Simeon Popov, Ondognij Pureb, Jansan Zamjansan

Journal:

Year:

1991

Language:

english

File:

PDF, 201 KB

english, 1991

31

Lipid and sterol changes in Phaseolus vulgaris caused by lead ions

Kamen Stefanov, Ivanka Popova, Boryana Nikolova-Damyanova, Georgi Kimenov, Simeon Popov

Journal:

Year:

1992

Language:

english

File:

PDF, 424 KB

english, 1992

32

Sterols and volatiles in Cystoseira barbata and Cystoseira crinita from the black sea

Tsenka Milkova, Georgi Talev, Rumen Christov, Stefka Dimitrova-Konaklieva, Simeon Popov

Journal:

Year:

1997

Language:

english

File:

PDF, 234 KB

english, 1997

33

Iridoid glucosides from three veronica species

Rilka Taskova, Nedjalka Handjieva, Dimitar Peev, Simeon Popov

Journal:

Year:

1998

Language:

english

File:

PDF, 161 KB

english, 1998

34

Iridoid glucosides from Plantago cornuti, Plantago major and Veronica cymbalaria

Rilka Taskova, Nedjalka Handjieva, Ljubka Evstatieva, Simeon Popov

Journal:

Year:

1999

Language:

english

File:

PDF, 110 KB

english, 1999

35

Occurrence of 19-nor cholesterol and homologs in marine animals

Simeon Popov, Robert M.K. Carlson, Anne-Marie Wegmann, Carl Djerassi

Journal:

Tetrahedron Letters

Year:

1976

Language:

english

File:

PDF, 243 KB

english, 1976

36

GC-MS studies of the chemical composition of two inedible mushrooms of the genusAgaricus

Assya Petrova, Kalina Alipieva, Emanuela Kostadinova, Daniela Antonova, Maria Lacheva, Melania Gjosheva, Simeon Popov, Vassya Bankova

Journal:

Chemistry Central Journal

Year:

2007

Language:

english

File:

PDF, 218 KB

english, 2007

37

Separation of iridoids by vacuum liquid chromatography

Nedjalka Handjieva, Houcine Saadi, Simeon Popov, Iskra Baranovska

Journal:

Phytochemical Analysis

Year:

1991

Language:

english

File:

PDF, 398 KB

english, 1991

38

CGC-MS of alkaloids in Leucojum aestivum plants and their in vitro cultures

Strahil Berkov, Atanas Pavlov, Mladenka Ilieva, Monique Burrus, Simeon Popov, Marina Stanilova

Journal:

Phytochemical Analysis

Year:

2005

Language:

english

File:

PDF, 102 KB

english, 2005

39

Gas-phase tautomerism in 1-phenylazonaphthalene-4-ol: verification of the responses of individual tautomers

Daniela Nedeltcheva, Vanya Kurteva, Boriana Damyanova, Simeon Popov

Journal:

Rapid Communications in Mass Spectrometry

Year:

2009

Language:

english

File:

PDF, 121 KB

english, 2009

40

Development in a Primary Cell Culture of the Marine SpongeIrcinia muscarumand Analysis of the Polar Compounds

Salvatore De Rosa, Salvatore De Caro, Giuseppina Tommonaro, Krasimir Slantchev, Kamen Stefanov, Simeon Popov

Journal:

Marine Biotechnology

Year:

2001

Language:

english

File:

PDF, 243 KB

english, 2001

41

The fatty acid composition of aVibrio alginolyticusassociated with the algaCladophora coelothrix. Identification of the novel 9-methyl-10-hexadecenoic acid

Néstor M. Carballeira, Anthony Sostre, Kamen Stefanov, Simeon Popov, Athanas Kujumgiev, Stefka Dimitrova-Konaklieva, Carmen G. Tosteson, Thomas R. Tosteson

Journal:

Year:

1997

Language:

english

File:

PDF, 78 KB

english, 1997

42

Iridoid glycosides from Linaria species

Nedjalka V. Handjieva, Emilia I. Ilieva, Stefan L. Spassov, Simeon S. Popov, Helmut Duddeck

Journal:

Year:

1993

Language:

english

File:

PDF, 445 KB

english, 1993

43

Benzoxazinoids and iridoid glucosides from four Lamium species

Kalina I Alipieva, Rilka M Taskova, Ljubka N Evstatieva, Nedjalka V Handjieva, Simeon S Popov

Journal:

Year:

2003

Language:

english

File:

PDF, 160 KB

english, 2003

44

Secondary metabolites and lipids in Chara globularis Thuill

Vassya Bankova, Kamen Stefanov, St. Dimitrova-Konaklieva, Gergana Keremedchieva, Xavie Frette, Christina Nikolova, Atanas Kujumgiev, Simeon Popov

Journal:

Year:

2001

Language:

english

File:

PDF, 64 KB

english, 2001

45

Chemical composition of the spongeChondrosia reniformisfrom [2pt] the Canary Islands

Jordan Nechev, William W. Christie, Rafael Robaina, Fernando M. de Diego, Albena Ivanova, Simeon Popov, Kamen Stefanov

Journal:

Year:

2002

Language:

english

File:

PDF, 178 KB

english, 2002

46

Volatile metabolic profiles of cell suspension cultures of Lavandula vera, Nicotiana tabacum and Helianthus annuus, cultivated under different regimes

Milen Georgiev, Vasil Georgiev, Plamen Penchev, Daniela Antonova, Atanas Pavlov, Mladenka Ilieva, Simeon Popov

Journal:

Engineering in Life Sciences

Year:

2010

Language:

english

File:

PDF, 156 KB

english, 2010

47

Phospholipid studies of marine organisms: V1new α-methoxy acids fromHigginsia tethyoides

Eser Ayanoglu, Simeon Popov, J. M. Kornprobst, Amira Aboud-Bichara, Carl Djerassi

Journal:

Year:

1983

Language:

english

File:

PDF, 529 KB

english, 1983

48

Comparison of the fatty acids of the tunicateBotryllus schlosserifrom the Black Sea with two associated bacterial strains

Néstor M. Carballeira, Fathi Shalabi, Kamen Stefanov, Krassimir Dimitrov, Simeon Popov, Athanas Kujumgiev, Stoitze Andreev

Journal:

Year:

1995

Language:

english

File:

PDF, 324 KB

english, 1995

49

Lipid composition of the red and green forms of Actina equinia from the black sea

Kamen L. Stefanov, William W. Christie, Elizabeth Y. Brechany, Simeon S. Popov, Stoitze N. Andreev

Journal:

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry

Year:

1992

Language:

english

File:

PDF, 349 KB

english, 1992

50

Sterol composition and biosynthesis in the Black Sea sponge Dysidea fragilis

Ivaylo Elenkov, Tsenka Milkova, Stoitse Andreev, Simeon Popov

Journal:

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry

Year:

1994

Language:

english

File:

PDF, 397 KB

english, 1994