Emmanuel E. Essien

University of Ghana

Also at Federal Neuro-Psychiatric Hospital, Calabarfrom their recent papers

Publishing since 1983, latest 2026

Food Science
Plant Science
Clinical Psychology
Molecular Biology
Social Psychology
Pharmacology

Publications: 1161983–2026
Citations: 1,128to those papers
h-index: 19i10-index 34
Field-weighted impact: 1.051.00 is the world average
World top 10%: 10%12 of 115 scored papers
Open access: 62%72 papers free to read

13 other works — preprints, datasets and the like — are listed but not counted.

By year

Papers, and the citations to them

Publications, left axisCitations to that year’s papers, right axis2026 still in progress

Career

On their papers

Publications

116 in all

Analysis of the Essential Oil ofDialium guineenseWilld
2007Journal of Essential Oil ResearchJournalFirst author6 citations10.1080/10412905.2007.9699327
Evaluation of antiplasmodial activity of ethanolic seed extract of Picralima nitida
2006Journal of EthnopharmacologyJournal36 citations

Download CV:PDFWord

Citations received each year

Peerford

To all their work, old papers included. Google Scholar also counts citations from theses, books and web pages, so its line runs higher.

What they work on

From the classification of each paper

Subfields

Food Science3228%
Plant Science2824%
Clinical Psychology1412%
Molecular Biology1311%
Social Psychology119%
Pharmacology109%
Biochemistry98%
Endocrinology, Diabetes and Metabolism98%
Epidemiology98%
General Health Professions98%

Health Sciences
Life Sciences
Social Sciences

Topics most written on

Essential Oils and Antimicrobial Activity24
Phytochemistry and Biological Activities13
Ethnobotanical and Medicinal Plants Studies10
Traditional and Medicinal Uses of Annonaceae9
Natural Antidiabetic Agents Studies8
Phytochemicals and Antioxidant Activities7
African Botany and Ecology Studies6
Mental Health Treatment and Access5
Ophthalmology and Visual Impairment Studies5
Polymer Nanocomposites and Properties5
Antibiotics Pharmacokinetics and Efficacy4
Drug-Induced Ocular Toxicity4

Who they write with

Their most frequent co-authors, and the papers those co-authors share

Where their co-authors are

48% of their papers have a co-author abroad

papers co-written12345611Home

Most frequent partner countries

Nigeria99
United States15
Italy11
United Kingdom11
Pakistan6
Canada5
Japan4
India4

Papers with at least one author in that country.

Institutions written with most

University of UyoNG46 papers
Federal Neuro-Psychiatric Hospital, CalabarNG26 papers
University of CalabarNG25 papers
Federal Neuro Psychiatric HospitalNG22 papers
University of IbadanNG13 papers
University of PisaIT11 papers
University of Alabama in HuntsvilleUS9 papers
University of LagosNG8 papers
First On-Call InitiativeNG8 papers
University of Port HarcourtNG7 papers

Where they publish

PubMed6
Pharmaceutical and Biosciences Journal5
Chemistry of Natural Compounds4
Journal of Ethnopharmacology4
Medicines4
World Journal of Applied Science & Technology4

Development goals addressed

From each paper’s title and abstract

2Zero hunger21
3Good health and well-being17
15Life on land7
6Clean water and sanitation6
1No poverty5
5Gender equality3
13Climate action2
10

Most cited

Larvicidal Activity of Turmerone-Rich Essential Oils ofCurcuma longa. Leaf and Rhizome from Nigeria onAnopheles gambiae.
Pharmaceutical Biology3
200866 citationsWorld top 10%Open access · Bronze
Characterization and Antimicrobial Activity of Volatile Constituents from Fresh Fruits of Alchornea cordifolia and Canthium subcordatum
Medicines
201564 citationsWorld top 10%Open access · Gold

Every institution they have given on a paper.

Volatile Constituents of Ficus Exasperata Leaves

2006Natural Product CommunicationsJournalOpen accessSenior author18 citations10.1177/1934578x0600100912

Leaf Essential Oil Constituents ofLycopersicon Esculentum(Mill.)

2006Journal of Essential Oil Bearing PlantsJournalFirst author0 citations10.1080/0972060x.2006.10643497

Metabolic N-oxidation of metronidazole

1987Journal of Pharmacy and PharmacologyJournalFirst author0 citations10.1111/j.2042-7158.1987.tb05130.x

Effects of chloroquine and didesethylchloroquine on rabbit myocardium and mitochondria

1986Journal of Pharmacy and PharmacologyJournalFirst authorCorresponding27 citations10.1111/j.2042-7158.1986.tb04635.x

Pharmacokinetics of chloroquine: Saliva and plasma levels relationship

1986European Journal of Drug Metabolism and PharmacokineticsJournal14 citations10.1007/bf03189112

Complete heart block in chronic chloroquine poisoning

1983International Journal of CardiologyJournal37 citations10.1016/0167-5273(83)90136-5

European Journal of Medicinal Plants

Journal of Essential Oil Bearing Plants3

How it can be read

62% free to read

Diamond 25 · 22%Free to read and to publish
Gold 23 · 20%In an open-access journal
Hybrid 14 · 12%Open in a subscription journal
Bronze 5 · 4%Free to read, no open licence
Green 5 · 4%A copy in a repository
Closed 44 · 38%Behind a paywall

Who funds it

14 of 116 papers name a funder

University of Ghana6
Deutsche Forschungsgemeinschaft1
Directorate for Biological Sciences1
FHI 3601
Medical Research Foundation1
National Institute of Standards and Technology1
Tertiary Education Trust Fund1
Third World Academy of Sciences1

Reduced inequalities

12Responsible consumption and production1

16Peace, justice and strong institutions1

201762 citationsOpen access · Gold

Chemical composition, antimicrobial, and cytotoxicity studies onS. erianthumandS. macranthumessential oils

Pharmaceutical Biology

201160 citationsWorld top 10%Open access · Bronze

Asymptomatic malaria parasitaemia in pregnant women at booking in a primary health care facility in a periurban community in Lagos, Nigeria.

PubMed3

200150 citations