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1

Development of a biotechnological procedure for treatment of animal wastes to obtain inexpensive biofertilizer

Adriana Gousterova, Maya Nustorova, Plamen Christov, Peter Nedkov, Georgi Neshev, Evgenia Vasileva-Tonkova

Journal:

World Journal of Microbiology and Biotechnology

Year:

2008

Language:

english

File:

PDF, 316 KB

english, 2008

2

A cotton fabric modified with a hydrogel containing ZnO nanoparticles. Preparation and properties study

Staneva, Desislava, Atanasova, Daniela, Vasileva-Tonkova, Evgenia, Lukanova, Varbina, Grabchev, Ivo

Journal:

Applied Surface Science

Year:

2015

Language:

english

File:

PDF, 1.89 MB

english, 2015

3

Development of Speech Intonation In Infants During The First Two Years of Life

Tonkova-Yampol'skaya, R. V.

Journal:

Journal of Russian and East European Psychology

Year:

1969

Language:

english

File:

PDF, 600 KB

english, 1969

4

Effect of glucose and citrate on α-amylase production in Bacillus licheniformis

Dr. Alexandra Tonkova

Journal:

Journal of Basic Microbiology

Year:

1991

Language:

english

File:

PDF, 338 KB

english, 1991

5

Chemical, microbiological and plant analysis of soil fertilized with alkaline hydrolysate of sheep’s wool waste

Maya Nustorova, Diana Braikova, Adriana Gousterova, Evgenia Vasileva-Tonkova, Peter Nedkov

Journal:

World Journal of Microbiology and Biotechnology

Year:

2006

Language:

english

File:

PDF, 247 KB

english, 2006

6

Antimicrobial activity and resistance to heavy metals and antibiotics of heterotrophic bacteria isolated from sediment and soil samples collected from two Antarctic islands

Tomova, Iva, Stoilova-Disheva, Margarita, Lazarkevich, Irina, Vasileva-Tonkova, Evgenia

Journal:

Frontiers in Life Science

Year:

2015

Language:

english

File:

PDF, 479 KB

english, 2015

7

Synthesis and characterization of new water soluble 9,10-anthraquinonе and evaluation of its antimicrobial activity

Yordanova, Stanislava, Vasileva-Tonkova, Evgenia, Staneva, Desislava, Stoyanov, Stanimir, Grabchev, Ivo

Journal:

Journal of Molecular Structure

Year:

2018

Language:

english

File:

PDF, 1.68 MB

english, 2018

8

Potential for Biodegradation of Hydrocarbons by Microorganisms Isolated from Antarctic Soils

Vasileva-Tonkova, Evgenia, Gesheva, Victoria

Journal:

Zeitschrift für Naturforschung C

Year:

2004

Language:

english

File:

PDF, 143 KB

english, 2004

9

Characterization and cultural conditions of a novel cyclodextrin glucanotransferase-producing Bacillus stearothermophilus strain

Miglena E. Stefanova, Alexandra I. Tonkova, Vanja I. Miteva, Elena P. Dobreva

Journal:

Journal of Basic Microbiology

Year:

1999

Language:

english

File:

PDF, 585 KB

english, 1999

10

Functional half-life of the alpha-amylase mRNA of Bacillus licheniformis

Alexandra Tonkova, Jarmila Pazlarová, Elka Emanuilova, Nelly Stoeva

Journal:

Journal of Basic Microbiology

Year:

1989

Language:

english

File:

PDF, 355 KB

english, 1989

11

Isolation and some properties of extracellular ribonuclease from Trichoderma harzianum

Evgenija S. Vasileva-Tonkova

Journal:

Enzyme and Microbial Technology

Year:

1993

Language:

english

File:

PDF, 313 KB

english, 1993

12

Purification, physicochemical properties, and specificity of a ribonuclease produced by Trichoderma harzianum

Evgenia S. Vasileva-Tonkova, Svetlana I. Bezborodova

Journal:

Enzyme and Microbial Technology

Year:

1996

Language:

english

File:

PDF, 705 KB

english, 1996

13

Ecologically safe method for improved feather wastes biodegradation

Evgenia Vasileva-Tonkova, Adriana Gousterova, Georgi Neshev

Journal:

International Biodeterioration & Biodegradation

Year:

2009

Language:

english

File:

PDF, 338 KB

english, 2009

14

Development of an ecologically safe method for improved feather wastes biodegradation using Thermophilic actinomycetes

E. Vasileva-Tonkova, A. Gousterova, M. Nustorova, G. Neshev

Journal:

New Biotechnology

Year:

2009

Language:

english

File:

PDF, 84 KB

english, 2009

15

Characterization of the enzyme complexes produced by two newly isolated thermophylic actinomycete strains during growth on collagen-rich materials

I. Goshev, A. Gousterova, E. Vasileva-Tonkova, P. Nedkov

Journal:

Process Biochemistry

Year:

2005

Language:

english

File:

PDF, 145 KB

english, 2005

16

Glycolipids produced by Antarctic Nocardioides sp. during growth on n-paraffin

E. Vasileva-Tonkova, V. Gesheva

Journal:

Process Biochemistry

Year:

2005

Language:

english

File:

PDF, 146 KB

english, 2005

17

Continuous cyclodextrin glucanotransferase production by free and immobilized cells of Bacillus circulans ATCC 21783 in bioreactors

Anna Vassileva, Venko Beschkov, Viara Ivanova, Alexandra Tonkova

Journal:

Process Biochemistry

Year:

2005

Language:

english

File:

PDF, 284 KB

english, 2005

18

Cyclodextrin glucanotransferase synthesis by semicontinuous cultivation of magnetic biocatalysts from cells of Bacillus circulans ATCC 21783

Mirka Safarikova, Nikolina Atanasova, Viara Ivanova, Frantisek Weyda, Alexandra Tonkova

Journal:

Process Biochemistry

Year:

2007

Language:

english

File:

PDF, 391 KB

english, 2007

19

A novel cyclodextrin glucanotransferase from alkaliphilic Bacillus pseudalcaliphilus 20RF: Purification and properties

Nikolina Atanasova, Tsvetina Kitayska, Ivanka Bojadjieva, Dragomir Yankov, Alexandra Tonkova

Journal:

Process Biochemistry

Year:

2011

Language:

english

File:

PDF, 285 KB

english, 2011

20

Thermostable exo-inulinase production by semicontinuous cultivation of membrane-immobilized Bacillus sp. 11 cells

K. Uzunova, A. Vassileva, V. Ivanova, D. Spasova, A. Tonkova

Journal:

Process Biochemistry

Year:

2002

Language:

english

File:

PDF, 475 KB

english, 2002

21

Cyclodextrin glucanotransferase production by free and agar gel immobilized cells of Bacillus circulans ATCC 21783

Anna Vassileva, Nigar Burhan, Venko Beschkov, Dimitrina Spasova, Spasimira Radoevska, Viara Ivanova, Alexandra Tonkova

Journal:

Process Biochemistry

Year:

2003

Language:

english

File:

PDF, 408 KB

english, 2003

22

Bacterial cyclodextrin glucanotransferase

Alexandra Tonkova

Journal:

Enzyme and Microbial Technology

Year:

1998

Language:

english

File:

PDF, 209 KB

english, 1998

23

Biosurfactant–rhamnolipid effects on yeast cells

E. Vasileva-Tonkova, D. Galabova, E. Karpenko, A. Shulga

Journal:

Letters in Applied Microbiology

Year:

2001

Language:

english

File:

PDF, 112 KB

english, 2001

24

Comparison of the phosphate-repressible and-constitutive acid phosphatases ofYarrowia lipolytica

D.N. Galabova, E.S. Vasileva-Tonkova, M.A. Balasheva

Journal:

World Journal of Microbiology and Biotechnology

Year:

1994

Language:

english

File:

PDF, 213 KB

english, 1994

25

Production and preliminary characterization of RNA-depolymerase fromTrichoderma harzianum

E. S. Vasileva-Tonkova

Journal:

World Journal of Microbiology and Biotechnology

Year:

1993

Language:

english

File:

PDF, 229 KB

english, 1993

26

Agar gel immobilization ofBacillus breviscells for production of thermostable α-amylase

M. E. Stefanova, A. I. Tonkova, E. P. Dobreva, D. I. Spasova

Journal:

Folia Microbiologica

Year:

1998

Language:

english

File:

PDF, 931 KB

english, 1998

27

Characterisation of cyclodextrin glucanotransferase fromBacillus circulansATCC 21783 in terms of cyclodextrin production

Anna Vassileva, Nikolina Atanasova, Viara Ivanova, Pascal Dhulster, Alexandra Tonkova

Journal:

Annals of Microbiology

Year:

2007

Language:

english

File:

PDF, 289 KB

english, 2007

28

Biosurfactant Production by Antarctic Facultative AnaerobePantoeasp. During Growth on Hydrocarbons

Evgenia Vasileva-Tonkova, Victoria Gesheva

Journal:

Current Microbiology

Year:

2007

Language:

english

File:

PDF, 130 KB

english, 2007

29

New Protein Hydrolysates from Collagen Wastes Used as Peptone for Bacterial Growth

E. Vasileva-Tonkova, M. Nustorova, A. Gushterova

Journal:

Current Microbiology

Year:

2007

Language:

english

File:

PDF, 87 KB

english, 2007

30

Biosurfactant Production by HalotolerantRhodococcusfasciansfrom Casey Station, Wilkes Land, Antarctica

Victoria Gesheva, Erko Stackebrandt, Evgenia Vasileva-Tonkova

Journal:

Current Microbiology

Year:

2010

Language:

english

File:

PDF, 243 KB

english, 2010

31

The Effect of Rhamnolipid Biosurfactant Produced byPseudomonas fluorescenson Model Bacterial Strains and Isolates from Industrial Wastewater

Evgenia Vasileva-Tonkova, Anna Sotirova, Danka Galabova

Journal:

Current Microbiology

Year:

2011

Language:

english

File:

PDF, 478 KB

english, 2011

32

Keratinase Production by Newly Isolated Antarctic Actinomycete Strains

Adriana Gushterova, Evgenia Vasileva-Tonkova, Elitza Dimova, Peter Nedkov, Thomas Haertlé

Journal:

World Journal of Microbiology and Biotechnology

Year:

2005

Language:

english

File:

PDF, 202 KB

english, 2005

33

Isolation of Novel AlkaliphilicBacillusStrains for Cyclodextrin Glucanotransferase Production

Nikolina Atanasova, Penka Petrova, Viara Ivanova, Dragomir Yankov, Anna Vassileva, Alexandra Tonkova

Journal:

Applied Biochemistry and Biotechnology

Year:

2008

Language:

english

File:

PDF, 151 KB

english, 2008

34

Purification and Properties of a New Thermostable Cyclodextrin Glucanotransferase fromBacillus pseudalcaliphilus8SB

Tsvetina Kitayska, Penka Petrova, Viara Ivanova, Alexandra Ivanova Tonkova

Journal:

Applied Biochemistry and Biotechnology

Year:

2011

Language:

english

File:

PDF, 285 KB

english, 2011

35

Cyclodextrin glucanotransferase production by cell biocatalysts of alkaliphilic bacilli

Nikolina Atanasova, Tsvetina Kitayska, Dragomir Yankov, Miroslava Safarikova, Alexandra Tonkova

Journal:

Biochemical Engineering Journal

Year:

2009

Language:

english

File:

PDF, 1.31 MB

english, 2009

36

Effect of gamma-irradiation on guanyl specific ribonuclease from Trichoderma harzianum

E. Vasileva-Tonkova, T. Chomoneva

Journal:

Process Biochemistry

Year:

2004

Language:

english

File:

PDF, 123 KB

english, 2004

37

Morphological and allozyme diversity in the Hieracium nigrescens group (Compositae) in the Sudety Mountains and the Western Carpathians

JINDŘICH CHRTEK JR, MARTINA TONKOVÁ, PATRIK MRÁZ, KAROL MARHOLD, IVANA PLAČKOVÁ, ANNA KRAHULCOVÁ, JAN KIRSCHNER

Journal:

Botanical Journal of the Linnean Society

Year:

2007

Language:

english

File:

PDF, 320 KB

english, 2007

38

Degradation of keratin and collagen containing wastes by newly isolated thermoactinomycetes or by alkaline hydrolysis

A. Gousterova, D. Braikova, I. Goshev, P. Christov, K. Tishinov, E. Vasileva-Tonkova, T. Haertlé, P. Nedkov

Journal:

Letters in Applied Microbiology

Year:

2005

Language:

english

File:

PDF, 96 KB

english, 2005

39

Influence of growth temperature on the acid phosphatase activity in the yeast Yarrowia lipolytica

E. Vasileva-Tonkova, D.M. Balasheva, D. Galabova

Journal:

FEMS Microbiology Letters

Year:

1996

Language:

english

File:

PDF, 394 KB

english, 1996

40

A specific alkaline phosphatase from Saccharomyces cerevisiae with protein phosphatase activity

Boriyana Tuleva, Evgenia Vasileva-Tonkova, Danka Galabova

Journal:

FEMS Microbiology Letters

Year:

1998

Language:

english

File:

PDF, 235 KB

english, 1998

41

Immobilization ofBacillus licheniformiscells, producers of thermostable α-amylase, on polymer membranes

E Dobreva, A Tonkova, V Ivanova, M Stefanova, L Kabaivanova, D Spasova

Journal:

Journal of Industrial Microbiology & Biotechnology

Year:

1998

Language:

english

File:

PDF, 106 KB

english, 1998

42

Hammerstein integral equations with discontinuous operators

V. G. Ogandzhanyan, R. K. Ragimkhanov, V. S. Tonkova

Journal:

Siberian Mathematical Journal

Year:

1970

Language:

english

File:

PDF, 378 KB

english, 1970

43

Screening of a growing cell immobilization procedure for the biosynthesis of thermostable α-amylases

V. Ivanova, M. Stefanova, A. Tonkova, E. Dobreva, D. Spassova

Journal:

Applied Biochemistry and Biotechnology

Year:

1995

Language:

english

File:

PDF, 1.47 MB

english, 1995

44

Production of enzymes and antimicrobial compounds by halophilic AntarcticNocardioidessp. grown on different carbon sources

Victoria Gesheva, Evgenia Vasileva-Tonkova

Journal:

World Journal of Microbiology and Biotechnology

Year:

2012

Language:

english

File:

PDF, 214 KB

english, 2012

45

Influence of the immobilization conditions on the efficiency of α-amylase production by Bacillus licheniformis

E. Dobreva, V. Ivanova, A. Tonkova, E. Radulova

Journal:

Process Biochemistry

Year:

1996

Language:

english

File:

PDF, 441 KB

english, 1996

46

Characterization of bacterial isolates from industrial wastewater according to probable modes of hexadecane uptake

Evgenia Vasileva-Tonkova, Danka Galabova, Emilia Stoimenova, Zdravko Lalchev

Journal:

Microbiological Research

Year:

2008

Language:

english

File:

PDF, 154 KB

english, 2008

47

Effects of rhamnolipid-biosurfactant on cell surface of Pseudomonas aeruginosa

A. Sotirova, D. Spasova, E. Vasileva-Tonkova, D. Galabova

Journal:

Microbiological Research

Year:

2009

Language:

english

File:

PDF, 260 KB

english, 2009

48

Thermostable 1-amylase production by Bacillus licheniformis cells immobilized on polyacrylates with cyclic carbonate groups in the side chain

E. Dobreva, V. Ivanova, M. Stefanova, A. Tonkova, L. Kabaivanova, D. Spassova

Journal:

Microbiological Research

Year:

1998

Language:

english

File:

PDF, 2.21 MB

english, 1998

49

Influence of growth temperature on the acid phosphatase activity in the yeast Yarrowia lipolytica

E. Vasileva-Tonkova, D.M. Balasheva, D. Galabova

Journal:

FEMS Microbiology Letters

Year:

1996

Language:

english

File:

PDF, 416 KB

english, 1996

50

Rapid myelin water content mapping on clinical MR systems

Vyara Tonkova, Volker Arhelger, Jochen Schenk, Heiko Neeb

Journal:

Zeitschrift für Medizinische Physik

Year:

2012

File:

PDF, 819 KB

2012

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