Journal Scope

The Tropical Journal of Natural Product Research is open access, peer-reviewed international journal aimed at making important contributions in the field of Natural Product Research, Pharmaceutical and Natural Sciences. The journal covers all aspects of Pharmaceutical research, chemistry and biochemistry of naturally occurring compounds, ethnomedicine, ethnopharmacology, pharmacognosy, biomedical research, biotechnology and related disciplines. The journal welcome submissions from a broad spectrum of scientific endeavour involving biological evaluation of natural substances of plant, microbial and animal origin against different disease targets, processes or therapeutic strategies that can lead to or assist in the prevention and management of chronic and infectious diseases, clinical therapeutics, Isolation and characterization of metabolites, structure elucidation, synthesis and experimental biosynthesis of natural Product as well as developments of methods in these areas. Research papers in the fields of chemistry-biology boundary, e.g. fermentation chemistry, plant tissue culture investigations etc. are also welcomed. Although the journal focuses mainly on original research articles, timely, concise and focused reviews on recent progress in active areas of natural Product is also encouraged.

Manuscript style and format

Articles should be original research work written in English in a concise and understandable manner. It is advised that authors who may want professional assistance with improving the English, or formatting in their manuscript should do so before submitting their manuscript. Manuscript should be in MS word, double-spaced on A4 (8.5" x 11") paper size with 1 inch margins. Article should be in the order:

  1. Title
  2. Abstract
  3. Keywords
  4. Introduction
  5. Materials and Methods
  6. Results and Discussion
  7. Conclusion
  8. Conflict of Interest
  9. Acknowledgement
  10. References

Title Page

The title should be concise and reflect the key elements of the research. The title should be followed by authors’ full name and affiliations. The corresponding author should be indicated with an asterisk and provide the full corresponding address (e-mail address and telephone number).


Abstract should start on a new page after the title page. Abstract should briefly state the purpose of the research, methodology, principal results, main findings, major conclusions and should not be more than 250 words. Abstracts should not be referenced and the use of abbreviations should be minimized and spelled out when first used.


Abstract should be followed by 4-6 keywords, provided by the authors and separated by a 'coma'.


A referenced introduction should set the work in context. The introduction should be kept to a minimum length and relevant to the research described. It should state the rationale, justifications and objectives of the research. Detailed descriptions of routine experimental procedures should be avoided.

Materials and Methods

Authors should provide sufficient experimental details to allow others to reproduce the findings presented, but where necessary, synthetic and bioassay protocols should refer to published procedures by literature citation of the original method and any later modifications used. Spectroscopic data for characterization of new compounds should be described in sufficient detail. Plants must be properly identified and authenticated by a taxonomist or experienced botanist and specimen must be deposited in recognized herbarium and voucher number must be stated. Where possible, supporting Information can be useful for presenting experimental details while limiting the size of the main document. This should be divided into subsections if several methods are described.

Ethical consideration on use of experimental animals and human subjects

Experiments involving the use of live animals must include a statement of approval by an ethical committee and certifying that such experiments were performed in accordance with all international guidelines and regulations. For experiments involving humans or tissue samples, a statement that informed consent was obtained from the subject or from the next of kin must be included.

Results and Discussion

The Results and Discussion may be combined into a single section or presented separately. They may also be broken into subsections with short, informative headings. Authors should present their data in a clear and interpretative manner. Presentation of data should not be duplicated. Discussion should interpret the results and relate them to existing knowledge in the field (with relevant literature). Supporting information can be used if this help to make the result clearer. All results presented in tabular form or graphical form should be comprehensively described in this section.

Presentation of NMR Data

Coupling constants for protons in a 1H NMR: Always give coupling constants for well resolved peaks. After each chemical shift, enter in parenthesis number of protons, multiplicity, coupling constants, and assignment in that order.

Chemical shift of 13C NMR: Carbon-13 NMR data should be reported to the nearest 0.1 ppm with the number of attached hydrogens designated as CH3, CH2, CH and C group.

Authors are also advised to present NMR data in tabular form. The title of the table should accurately and concisely reflect the contents of the table.


Authors should state their conclusions or the significance of their findings following the discussion of results. Conclusions should also be summarized in the abstract in order to place the authors’ research in proper perspective.

List of abbreviations

If abbreviations are used in the text, they should be defined in the text where first used.

Tables and Figures/Graphics

Tables and figures showing the results of the experiment should be placed at the end of the manuscript after the list of references. Tables and figures not displaying the results of the experiment should be placed within the body of the manuscript closed to the point where they are mentioned. All tables and figures should be referred to in the text of the manuscript.


Tables should have the following characteristics:

  • The table should be created using table format feature. Ensure each data entry is in its own table cell.
  • Tables should be without borders and shadings except for column headings and bottom border.
  • Tables should be consecutively numbered using Arabic numerals.
  • Tables should have a descriptive heading that, together with the individual column headings, makes the table self-explanatory.
  • Footnotes should be given letter designations and cited in the table by superscript letters.


Figures/graphics should give the reader a quick visual representation of the important results and/or the essence of the paper without providing specific details. All figures/graphics should be submitted using the following guidelines:

  • Embedded figure or graphic files in a Word document is preferred.
  • The following file format is also accepted; TIFF, PDF, EPS (vector artwork) or CDX (ChemDraw file).
  • Chemical structures should be drawn using ChemDraw and formatted per the American Chemical Society (ACS) document settings.
  • Graphics with similar information should be of similar size.
  • All figure parts should be labeled and grouped into a single graphic.
  • Figure/graphic should be clear, simple, relatively free of text and technical characters, and make use of color for visual impact.
  • Graphic files should be consecutively numbered using Arabic numerals and should have a descriptive title and named based on graphic function (i.e. Scheme 1, Figure 2, Chart 3).

Conflict-of-Interest Disclosure

A statement describing any financial conflicts of interest or lack thereof is published with each manuscript. During the submission process, the corresponding author must provide this statement on behalf of all authors of the manuscript.


Funding body and all those who assisted in the work but may not qualify as an author should be acknowledged.


References should follow the Vancouver citing and referencing style;

  • The in-text citation is indicated by a number (use Arabic numerals).
  • The number should be placed immediately after the text which refers to the source being cited.
  • Reference numbers should be in superscript and placed outside or after full stops and commas
  • The reference list should be typed single-spaced and listed in numerical order, and in the same order in which they were cited in text.

Reference to a Journal Article:

Engel N, Oppermann C, Falodun A, Kragl U. Proliferative effects of five traditional Nigerian medicinal plant extracts on human breast and bone cancer cell lines. J Ethnopharmacol. 2011; 137(2): 1003-1010.

Erharuyi O, Adhikari A, Falodun A, Jabeen A, Imad R, Ammad M, Choudhary MI, Goren N. Cytotoxic, anti-inflammatory, and leishmanicidal activities of Diterpenes isolated from the roots of Caesalpinia pulcherrima. Planta Med. 2017; 83(01/02): 104-110.

McPherson DD, Che C, Cordell GA, Soejarto DD, Pezzuto JM, Fong HHS. Diterpenoids from Caesalpinia pulcherrima. Phytochem 1985; 25(01): 167-170.

Reference to a web source:

Smith J. One of Volvo's core values. [Online]. 1999 [cited 2001 Dec 10]. Available from:

Reference to a book:

Strunk W Jr., White EB. The elements of style. (3rd ed.). New York: Macmillan; 1979. 124 p.

Reference to a chapter in an edited book:

Mettam GR, Adams LB. How to prepare an electronic version of your article. In: Jones BS, Smith RZ (Eds.). Introduction to the electronic age. New York: E-Publishing Inc; 1994. 281-304 p.

Manuscript Submission Process

All manuscript should be submitted electronically via the journal website Manuscript submission system or by email attachment to the editor-in-Chief [email protected]
The author who submitted the manuscript automatically becomes the corresponding author and must provide contact information (full name, email address, institutional affiliation and mailing address) for all the co-authors.

Cover Letter

All manuscripts must be accompanied by a cover letter that contains clear and precise information about the submission, highlighting the significance of the work. Each article/manuscript must be accompanied by a statement that it has not been submitted for publication elsewhere in English (download sample cover letter from

Editorial process and Peer Review

All submitted manuscripts are subject to initial appraisal by the Editor. If found suitable for further consideration and publication, manuscripts are subject to peer review by independent, competent, experts and anonymous referees. Receipt of the manuscript will be acknowledged by email. Every effort will be made to complete the review process within shortest possible time. Papers should be submitted electronically by visiting the journal website.

Publication cost/Open Access Fees

Accepted articles will be published online for free open access for all to view. Open access publishing provides the maximum dissemination of the article to the largest audience.

Publication Charges

All corresponding authors will be asked to pay their publication charges as open access fee (given below) per published article which allows indefinite free-to-view online publication. There are no charges for submitting a manuscript. Upon acceptance of a paper for publication, the authors will be required to pay publication charges of 50,000.00 Naira (for Nigerian authors), USD$ 270.00 (for others) before the accepted paper is published. For further information, please contact us at e-mail: [email protected]

Submission Preparation Checklist

As part of the submission process, authors are required to check off their submission's compliance with all the following items, and submissions may be returned to authors that do not adhere to these guidelines.

  1. The submission has not been previously published, nor is it before another journal for consideration (or an explanation has been provided in Comments to the Editor).
  2. The submission file is in OpenOffice, Microsoft Word, RTF, or WordPerfect document file format.
  3. Where available, URLs for the references have been provided.
  4. The text is double-spaced; uses a 12-point font; employs italics, rather than underlining (except with URL addresses); and all illustrations, figures, and tables are placed at the end.
  5. The text adheres to the stylistic and bibliographic requirements outlined in the Author Guidelines.

Accepted Manuscript/Galley proof

After peer review, reviewer’s and editor’s comment are sent to the corresponding author. Accepted manuscript is sent as galley proof to the corresponding author. Authors should review proofs in detail to ensure that the text and figures are correct. Authors are encouraged to return proofs within 2 to 3 days by email attachment to ensure timely publication.

Journal Publishing Agreement

A properly completed and signed Journal Publishing Agreement must be submitted for each manuscript.

Journal Publishing Agreement

A properly completed and signed Journal Publishing Agreement must be submitted for each manuscript (download a sample copy from the Journal website).

Privacy Statement

The names and email addresses entered in this journal site will be used exclusively for the stated purposes of this journal and will not be made available for any other purpose or to any other party.

Frequency of Publication

Four issues a year, with rapid review and publication.


Papers published are abstracted and indexed by scientific indexing services Open J-Gate, Google Scholar, EBSCO Host, EMBASE.


Submission of a manuscript implies that the work has not been published; that is not under consideration for publication elsewhere; that is publication has been approved by all co-authors, if any, as well as by the responsible authorities at the institute where the work has been carried out; that if and when the manuscript is accepted for publication the authors agree to automatic transfer to the copyright to the publisher and that the manuscript will not be published elsewhere in any language without the consents of the copyright holders.

All articles published in this journal are protected by copyright, which covers the exclusive rights to produce and distribute (e.g. as off-prints), as well as translation rights. No material published in this journal maybe reproduced photographically or stored on microfilm, in electronic data bases, videos disks etc without first obtaining written permission from the publisher. The use of general descriptive names, tradenames, trademarks etc. In this publication, even if not specifically identified, does not imply that these names are not protected by the relevant material contained herein.

While the advice in this journal is believed to be true and accurate at the date of its going to press, neither the authors, the publisher can accept any legal responsibility for any errors or omission that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein.

Editorial enquiries

Editor-in-Chief: Professor Abiodun Falodun
Tropical Journal of Natural Product Research
(Official Journal of Natural Products Research Group)
Department of Pharmaceutical Chemistry
Faculty of Pharmacy
University of Benin, 300001, Nigeria

E-mail: [email protected]; [email protected]

ISSN: 2616-0684 (Print)
ISSN: 2616-0692 (Online)
DOI: 10.26538/tjnpr
Index Copernicus Value (ICV) for 2017: 59.83
Scopus citescore 0.3 (2020)

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