Е. Добрева

501 total citations
25 papers, 417 citations indexed

About

Е. Добрева is a scholar working on Biotechnology, Molecular Biology and Nutrition and Dietetics. According to data from OpenAlex, Е. Добрева has authored 25 papers receiving a total of 417 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Biotechnology, 18 papers in Molecular Biology and 9 papers in Nutrition and Dietetics. Recurrent topics in Е. Добрева's work include Enzyme Production and Characterization (19 papers), Enzyme Catalysis and Immobilization (14 papers) and Microbial Metabolites in Food Biotechnology (8 papers). Е. Добрева is often cited by papers focused on Enzyme Production and Characterization (19 papers), Enzyme Catalysis and Immobilization (14 papers) and Microbial Metabolites in Food Biotechnology (8 papers). Е. Добрева collaborates with scholars based in Bulgaria, Czechia and Jordan. Е. Добрева's co-authors include В. Иванова, Viara Ivanova, Alexandra Tonkova, Jordan Hristov, D. Kolev, V. Beschkov, Dragomir Yankov, Lyudmila Kabaivanova, Maya Stefanova and D Spasova and has published in prestigious journals such as Applied Microbiology and Biotechnology, Process Biochemistry and Enzyme and Microbial Technology.

In The Last Decade

Е. Добрева

24 papers receiving 385 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Е. Добрева Bulgaria	13	222	177	119	94	81	25	417
I. Heertje Netherlands	14	28 0.1×	70 0.4×	126 1.1×	41 0.4×	37 0.5×	26	772
Minna Juvonen Finland	13	130 0.6×	125 0.7×	128 1.1×	213 2.3×	137 1.7×	21	550
W. Bögl Germany	8	50 0.2×	25 0.1×	23 0.2×	46 0.5×	60 0.7×	22	328
Maria Cristina D’Oca Italy	19	83 0.4×	39 0.2×	16 0.1×	41 0.4×	91 1.1×	45	702
F. Schierbaum Germany	15	47 0.2×	36 0.2×	416 3.5×	56 0.6×	131 1.6×	72	694
Alexey S. Peshkovsky United States	9	32 0.1×	39 0.2×	13 0.1×	102 1.1×	15 0.2×	14	379
M.L. Buszko United States	12	70 0.3×	363 2.1×	27 0.2×	267 2.8×	41 0.5×	18	539
Zhongquan Zhang China	11	17 0.1×	140 0.8×	8 0.1×	30 0.3×	48 0.6×	30	421
S Okada Japan	10	468 2.1×	222 1.3×	325 2.7×	170 1.8×	212 2.6×	16	659
Z.Y. Cui China	9	18 0.1×	49 0.3×	49 0.4×	46 0.5×	20 0.2×	35	246

Countries citing papers authored by Е. Добрева

Since Specialization

Citations

This map shows the geographic impact of Е. Добрева's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Е. Добрева with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Е. Добрева more than expected).

Fields of papers citing papers by Е. Добрева

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Е. Добрева. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Е. Добрева. The network helps show where Е. Добрева may publish in the future.

Co-authorship network of co-authors of Е. Добрева

This figure shows the co-authorship network connecting the top 25 collaborators of Е. Добрева. A scholar is included among the top collaborators of Е. Добрева based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Е. Добрева. Е. Добрева is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Dimitrov, Plamen, et al.. (2008). Nitrile degradation by free and immobilized cells of the thermophile Bacillus sp. UG-5B, isolated from polluted industrial waters. World Journal of Microbiology and Biotechnology. 24(11). 2383–2388. 8 indexed citations

Kabaivanova, Lyudmila, et al.. (2004). Immobilization of cells with nitrilase activity from a thermophilic bacterial strain. Journal of Industrial Microbiology & Biotechnology. 32(1). 7–11. 23 indexed citations

Добрева, Е., Alexandra Tonkova, В. Иванова, et al.. (1998). Immobilization of Bacillus licheniformis cells, producers of thermostable ?-amylase, on polymer membranes. Journal of Industrial Microbiology & Biotechnology. 20(3-4). 166–170. 13 indexed citations

Добрева, Е., et al.. (1998). Thermostable 1-amylase production by Bacillus licheniformis cells immobilized on polyacrylates with cyclic carbonate groups in the side chain. Microbiological Research. 153(2). 157–162. 6 indexed citations

Иванова, В., et al.. (1996). Performance of a magnetically stabilized bed reactor with immobilized yeast cells. Applied Biochemistry and Biotechnology. 59(2). 187–198. 49 indexed citations

Добрева, Е., et al.. (1996). Influence of the immobilization conditions on the efficiency of α-amylase production by Bacillus licheniformis. Process Biochemistry. 31(3). 229–234. 18 indexed citations

Иванова, В., et al.. (1995). Screening of a growing cell immobilization procedure for the biosynthesis of thermostable α-amylases. Applied Biochemistry and Biotechnology. 50(3). 305–316. 10 indexed citations

Kolev, D., et al.. (1995). A convenient method for experimental determination of yields and isomeric ratios in photonuclear reactions measured by the activation technique. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 356(2-3). 390–396. 48 indexed citations

Добрева, Е., et al.. (1994). Effect of temperature on some characteristics of the thermostable α-amylase from Bacillus licheniformis. World Journal of Microbiology and Biotechnology. 10(5). 547–550. 17 indexed citations

10.

Tonkova, Alexandra, В. Иванова, Е. Добрева, Maya Stefanova, & D Spasova. (1994). Thermostable α-amylase production by immobilized Bacillus licheniformis cells in agar gel and on acrylonitrile/acrylamide membranes. Applied Microbiology and Biotechnology. 41(5). 517–522. 17 indexed citations

11.

Ivanova, Viara, et al.. (1993). Purification and characterization of a thermostable alpha-amylase from Bacillus licheniformis. Journal of Biotechnology. 28(2-3). 277–289. 62 indexed citations

12.

Tonkova, Alexandra, et al.. (1993). Thermostable α-amylase from derepressed Bacillus licheniformis produced in high yields from glucose. Process Biochemistry. 28(8). 539–542. 15 indexed citations

13.

Добрева, Е., et al.. (1992). Phosphate Effects on Production and Thermostability of Bacillus Licheniformis 44Mb82—A α—Amylase. Biotechnology & Biotechnological Equipment. 6(2). 38–40. 1 indexed citations

14.

Добрева, Е. & В. Иванова. (1991). Silica carriers for immobilization of thermostable α‐amylase. Acta Biotechnologica. 11(3). 263–268. 4 indexed citations

15.

Al‐Qodah, Zakaria, et al.. (1991). Non-porous magnetic supports for cell immobilization. Journal of Fermentation and Bioengineering. 71(2). 114–117. 28 indexed citations

16.

Добрева, Е. & В. Иванова. (1989). Charakterisierung der Stärkehydrolysate nach Einwirkung einer thermostabilen α‐Amylase. Acta Biotechnologica. 9(6). 549–554. 6 indexed citations

17.

Добрева, Е.. (1987). Einfluß einiger Faktoren in Abhängigkeit von den Methoden bei der Immobilisierung eines bakteriellen Enzympräparats mit Milchkoagulationswirkung. Acta Biotechnologica. 7(1). 49–53.

18.

Yankov, Dragomir, et al.. (1986). Study of optimum conditions and kinetics of starch hydrolysis by means of thermostable α-amylase. Enzyme and Microbial Technology. 8(11). 665–667. 41 indexed citations

19.

Добрева, Е., et al.. (1985). Investigation of α‐amylase and proteinase of culture filtrate from bacillus licheniformis MB 80 strain. Acta Biotechnologica. 5(2). 187–190. 1 indexed citations

20.

Добрева, Е. & N. Nenoff. (1984). Yields of fission products with masses A=131 to 135 for the fast neutron induced fission of U-238. Journal of Radioanalytical and Nuclear Chemistry. 81(1). 29–36. 9 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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