World's Best Scientists 2026 revealed!
Ilkay Erdogan Orhan

Ilkay Erdogan Orhan

D-Index & Metrics

Chemistry

D-Index
68
Citations
21475
World Ranking
6415
National Ranking
19

Ilkay Erdogan Orhan publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Ilkay Erdogan Orhan sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 282 publications — 58th percentile

58% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Ilkay Erdogan Orhan D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Ilkay Erdogan Orhan sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 68 D-Index — 64th percentile

64% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Ilkay Erdogan Orhan is affiliated with Gazi University in Turkey and has a substantial body of research primarily focused on medicine. Their work covers various subfields, including pharmacology, molecular biology, computational theory and mathematics, plant science, and complementary and alternative medicine.

The scientist's research addresses several main topics, such as:

  • Cholinesterase and Neurodegenerative Diseases
  • Computational Drug Discovery Methods
  • Phytochemicals and Antioxidant Activities
  • Essential Oils and Antimicrobial Activity
  • Phytochemistry and Biological Activities
  • Medicinal Plants and Neuroprotection
  • Natural product bioactivities and synthesis

Ilkay Erdogan Orhan has published papers in a variety of academic venues. The most frequent publication venues include:

  • South African Journal of Botany
  • Pharmaceuticals
  • Phytochemistry Letters
  • Current Topics in Medicinal Chemistry
  • Current Pharmaceutical Design

Some recent papers authored or co-authored by Ilkay Erdogan Orhan include:

  • "Natural products in drug discovery: advances and opportunities" (2021), published in Nature Reviews Drug Discovery
  • "Development and Validation of a Nomogram for Assessing Survival in Patients With COVID-19 Pneumonia" (2020), published in Clinical Infectious Diseases
  • "Natural Products as Potential Leads Against Coronaviruses: Could They be Encouraging Structural Models Against SARS-CoV-2?" (2020), published in Natural Products and Bioprospecting
  • "Kombucha - An ancient fermented beverage with desired bioactivities: A narrowed review" (2022), published in Food Chemistry X
  • "The International Natural Product Sciences Taskforce (INPST) and the power of Twitter networking exemplified through #INPST hashtag analysis" (2022), published in Phytomedicine

The scientist frequently collaborates with several co-authors, including:

  • Fatma Sezer Şenol
  • Gökçen Eren
  • Ramin Ekhteiari Salmas
  • Nurten Abacı
  • Hasya Nazlı Gök

Best Publications

  • Natural products in drug discovery: advances and opportunities.

    Atanas G Atanasov;Sergey B Zotchev;Verena M Dirsch

  • Antibacterial and antifungal activities of thymol: A brief review of the literature

    Anna Marchese;Ilkay Erdogan Orhan;Maria Daglia;Ramona Barbieri

  • Luteolin, a flavonoid, as an anticancer agent: A review.

    Muhammad Imran;Abdur Rauf;Tareq Abu-Izneid;Muhammad Nadeem

  • Antimicrobial activity of eugenol and essential oils containing eugenol: A mechanistic viewpoint.

    Anna Marchese;Ramona Barbieri;Erika Coppo;Ilkay Erdogan Orhan

  • Cytotoxicity, antiviral and antimicrobial activities of alkaloids, flavonoids, and phenolic acids

    Berrin Ozçelik;Murat Kartal;Ilkay Orhan

  • Verbascoside — A review of its occurrence, (bio)synthesis and pharmacological significance

    Kalina Alipieva;Liudmila Korkina;Ilkay Erdogan Orhan;Milen I. Georgiev

  • A critical analysis of extraction techniques used for botanicals: Trends, priorities, industrial uses and optimization strategies

    Tarun Belwal;Shahira M. Ezzat;Luca Rastrelli;Indra D. Bhatt

  • Acetylcholinesterase and butyrylcholinesterase inhibitory activity of some Turkish medicinal plants.

    I Orhan;B Şener;M.I Choudhary;A Khalid

  • Cholinesterase inhibitory activities of some flavonoid derivatives and chosen xanthone and their molecular docking studies.

    Mahmud Tareq Hassan Khan;I. Orhan;F.S. Şenol;M. Kartal

  • Antioxidant and anticholinesterase evaluation of selected Turkish Salvia species

    Ilkay Orhan;Murat Kartal;Qamar Naz;Asma Ejaz

  • Inhibitory effect of Turkish Rosmarinus officinalis L. on acetylcholinesterase and butyrylcholinesterase enzymes

    İlkay Erdoğan Orhan;Sinem Aslan;Murat Kartal;Bilge Şener

  • Allicin and health: A comprehensive review

    Bahare Salehi;Paolo Zucca;Ilkay Erdogan Orhan;Elena Azzini

  • Inhibitory Activity of Marine Sponge-Derived Natural Products against Parasitic Protozoa

    Ilkay Orhan;Bilge Şener;Marcel Kaiser;Reto Brun

  • Screening of various phenolic acids and flavonoid derivatives for their anticholinesterase potential.

    Ilkay Orhan;Murat Kartal;Fatma Tosun;Bilge Şener

  • Activity of Essential Oils and Individual Components against Acetyland Butyrylcholinesterase

    Ilkay Orhan;Murat Kartal;Yüksel Kan;Bilge Sener

  • Neuroprotective effects of chrysin: From chemistry to medicine

    Seyed Fazel Nabavi;Nady Braidy;Solomon Habtemariam;Ilkay Erdogan Orhan

  • Antibacterial, antifungal, and antiviral activities of the lipophylic extracts of Pistacia vera

    Berrin Özçelik;Mustafa Aslan;Ilkay Orhan;Taner Karaoglu

  • The effects of baicalein and baicalin on mitochondrial function and dynamics: A review.

    Marcos Roberto de Oliveira;Seyed Fazel Nabavi;Solomon Habtemariam;Ilkay Erdogan Orhan

  • Survey of 55 Turkish Salvia taxa for their acetylcholinesterase inhibitory and antioxidant activities

    F. Sezer Senol;Ilkay Orhan;Ferhat Celep;Ahmet Kahraman

  • Fatty acid composition of seed oil of different Sorghum bicolor varieties

    Sajid Mehmood;Ilkay Orhan;Zaheer Ahsan;Sinem Aslan

  • Appraisal of anti-inflammatory potential of the clubmoss, Lycopodium clavatum L.

    Ilkay Orhan;Esra Küpeli;Bilge Şener;Erdem Yesilada

  • Appraisal of scopolamine-induced antiamnesic effect in mice and in vitro antiacetylcholinesterase and antioxidant activities of some traditionally used Lamiaceae plants.

    Ilkay Orhan;Mustafa Aslan

Frequent Co-Authors

Bilge Sener
Bilge Sener Gazi University
Seyed Mohammad Nabavi
Seyed Mohammad Nabavi Baqiyatallah University of Medical Sciences
Seyed Fazel Nabavi
Seyed Fazel Nabavi Baqiyatallah University of Medical Sciences
Maria Daglia
Maria Daglia University of Naples Federico II
Atanas G. Atanasov
Atanas G. Atanasov Medical University of Vienna
M. Iqbal Choudhary
M. Iqbal Choudhary University of Karachi
Kemal Hüsnü Can Başer
Kemal Hüsnü Can Başer Near East University
Maurizio Battino
Maurizio Battino Marche Polytechnic University
Monica Rosa Loizzo
Monica Rosa Loizzo University of Calabria
Betül Demirci
Betül Demirci Anadolu University

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