Antioxidants Submission Guide: MDPI Process (2026)

Antioxidants is not a stronger version of a subscription redox journal, and it is not a weaker one. It is a different model. MDPI built it around speed and soundness-based review: the editorial question is whether the work is methodologically sound and within scope, not whether it ranks among the most mechanistically novel findings of the year. That model shapes everything about how you should prepare the package.

Two consequences matter most. First, the journal is scope-defined around the science and technology of antioxidants, so a paper has to read as redox biology, not as something else with an antioxidant assay bolted on. Second, the pre-check is fast and partly template-driven, so completeness is rewarded and incompleteness is punished early. A technically clean chemistry manuscript with no biological mechanism can be returned before a reviewer ever sees it, while a competent, complete, in-scope redox study moves quickly.

The fault line that catches the most authors is the DPPH problem. A large share of antioxidant manuscripts are really in-vitro radical-scavenging screens of a plant extract or a synthesized compound, reported as DPPH, ABTS, FRAP, or ORAC values with no link to a biological system. Antioxidants is not the journal for a standalone assay panel.

The editorial culture expects the antioxidant claim to connect to a mechanism, a cell model, an animal model, or a disease context. If your evidence stops at a radical-scavenging number, the scope fit is thin no matter how careful the chemistry is.

The core fit for most submissions is the original research article. It works best when the redox question is central, the methods are reproducible from the text, and the declarations and reporting package are complete on first upload.

Ask these questions before you submit:

• is antioxidant activity connected to a biological mechanism or model, or does the evidence stop at an in-vitro radical-scavenging assay?
• is the redox or oxidative-stress question the actual subject of the paper, or is it a downstream label on a food-chemistry or analytical-chemistry study?
• can a reader reproduce the methods from the manuscript and supplementary files alone?
• are the ethics, consent, and data statements complete and specific, or are they still stub text?

If the answers are uncertain, the pre-check problem is usually more important than the science problem.

The pre-check editor is answering a short list of questions fast.

On scope, the editor asks whether the manuscript belongs in a redox-biology and antioxidant-science journal. If the antioxidant relevance is thin, bolted on, or stops at an in-vitro assay, the paper is redirected or returned. On mechanism, the question is whether antioxidant activity is connected to a biological process rather than reported as an isolated chemical number. Antioxidants does not require the finding to be field-defining, but it does require the redox biology to be present and the work to be done correctly.

On soundness, the editor checks whether the methods are reproducible and the analysis appropriate, including whether the assay panel is adequate and whether positive and negative controls are reported. On integrity, the editor checks whether ethics approvals, consent, image-integrity expectations, and data availability are all in order. MDPI runs a technical pre-check by the editorial office and an editorial pre-check by an academic editor, plus integrity and plagiarism checks, and gaps here trigger fast returns.

On completeness, the editor looks for the declarations block. A manuscript missing Author Contributions, Funding, or Conflicts of Interest reads as not ready, even when the science is fine.

Manuscript structure: Antioxidants expects a defined section set: Abstract, Keywords, Introduction, Materials and Methods, Results, Discussion, Conclusions, plus the declarations block. Use a structured or single-paragraph abstract of around 200 to 250 words that makes both the redox question and the main mechanistic result visible. The abstract is the first thing the pre-check editor reads, so the antioxidant mechanism, not just an assay value, needs to be visible there.

Mechanism and assay readiness: Provide full experimental detail so results can be reproduced, and pair any radical-scavenging assay with a biological readout. A DPPH or ABTS panel should support a mechanistic or cellular claim, not stand as the entire result. Report the controls, the concentrations, and the standardization for every assay, and connect the in-vitro chemistry to a cell model, an animal model, or a disease-relevant pathway wherever the claim depends on biological relevance.

Reporting and methods compliance: Follow the design-appropriate guideline: ARRIVE for animal work, CONSORT for randomized trials, PRISMA for systematic reviews and meta-analyses with a registered protocol. A cellular or in-vivo redox study that does not report sample sizes, replication, and statistical analysis cleanly is the most common reviewer-stage friction point.

Declarations and ethics: Draft the Institutional Review Board statement, Informed Consent statement, animal-ethics statement, Author Contributions (by initials), Funding, Data Availability, and Conflicts of Interest sections before you upload. These are not post-acceptance paperwork at MDPI; they are pre-check gates.

Figures, supplementary, and abstract assets: A graphical abstract is optional but commonly used; if supplied, it should be a high-resolution PNG, JPEG, or TIFF. Supplementary materials should carry the assay-level detail, raw blots, and datasets that would slow the main narrative. ORCID is expected for the submitting author, and the system will ask for suggested reviewers in the relevant redox subfield.

In our pre-submission review work with Antioxidants submissions, three failure patterns generate the most consistent pre-check returns and reviewer friction, and they are testable against your own manuscript before you upload. These are the recurring desk-rejection triggers we see, and each is a red flag you can check before upload.

Across our redox-biology pre-submission reviews, the pattern that surprises authors most is that the Antioxidants pre-check is not a quality filter in the Nature sense; it is a scope-mechanism-and-completeness filter. The manuscripts that get returned fastest are rarely bad chemistry. They are competent in-vitro studies whose biological mechanism, scope angle, or declarations block is not ready for a fast screen.

Manuscripts coming through pre-submission review for Antioxidants split cleanly along three lines: assay-only antioxidant activity with no biological mechanism, scope drift into pure food chemistry or pure analytical chemistry, and an incomplete declarations block. Each is detailed below with the testable version you can run against your own draft.

Assay-only antioxidant activity with no biological mechanism

The single most common pattern we see is a manuscript whose entire result is an in-vitro radical-scavenging panel. The study reports DPPH, ABTS, FRAP, or ORAC values for a plant extract or a synthesized compound and concludes that the material "has antioxidant activity," with no cellular model, no in-vivo data, and no mechanism.

Antioxidants is scope-defined around the biology of antioxidants, so the pre-check editor reads an assay-only paper as out of scope for a redox-biology venue, regardless of how careful the chemistry is.

The testable version: read your own Results, and ask whether any conclusion would survive if you deleted every standalone assay number. If the antioxidant claim rests entirely on a radical-scavenging value with no biological readout, the mechanism is missing. Connect the chemistry to a cell model, an animal model, or a measured redox pathway before you submit.

Check whether your Antioxidants paper connects assay data to a biological mechanism →

Scope drift into pure food chemistry or pure analytical chemistry

The second pattern is a manuscript whose real subject is food composition, extraction optimization, or analytical method development, with an antioxidant assay attached so the work can target a redox journal. We repeatedly see extraction-yield studies, total-phenolic-content surveys, and HPLC method papers framed around an antioxidant claim that the data do not actually support as a redox-biology result.

Antioxidants has natural-products and applications scope, but the antioxidant science still has to be central. The testable version: read your title and abstract, and ask whether a redox-biology editor could name the oxidative-stress mechanism or biological question from the first paragraph alone. If the paper is really about analytical separation, extraction conditions, or food composition with antioxidant capacity as a side measurement, the better home is often a food-chemistry or analytical journal.

Check whether your Antioxidants scope reads as redox biology, not food or analytical chemistry →

Incomplete declarations, ethics, and data-availability statements

The third pattern is a declarations block that is missing, generic, or left as stub text. MDPI treats the Institutional Review Board statement, Informed Consent statement, animal-ethics statement, and Data Availability Statement as pre-check gates, not as paperwork to finalize after acceptance.

We repeatedly see animal redox studies with no ethics-approval number and no ARRIVE-aligned reporting, human oxidative-stress biomarker studies with no consent language, and a Data Availability Statement that reads only "data available on request" with no repository, accession, or concrete route. Because the pre-check is fast, a single missing statement can return the manuscript before review.

The testable version: for every experiment that touches patients, tissue, or animals, confirm there is a corresponding ethics statement with a real approval identifier, and confirm your Data Availability Statement names where the underlying data actually lives.

Check whether your Antioxidants ethics and data statements are upload-ready →

Each of these is something you can check against your own draft before you commit the submission. This guide tells you what Antioxidants editors look for; the review tells you whether YOUR paper passes the pre-check before you upload. We have reviewed manuscripts targeting redox-biology and antioxidant-science journals, including Antioxidants and its open-access and subscription peers. Paid Manusights reviews include a 60-day money-back guarantee, and we do not train models on submitted manuscripts.

Run an Antioxidants submission package check to see whether your mechanism framing, scope angle, declarations block, and reporting compliance will clear the MDPI pre-check.

Antioxidants reports a median first decision near 18 to 19 days and an end-to-end submission-to-publication time near six weeks. Treat these as planning ranges, not promises: mechanistic and clinical manuscripts often run longer because reviewer search takes time in specialized redox subfields.

• Day 0: Submission via SuSy. The portal accepts the package and routes it to the editorial office for a technical pre-check.

• Days 1 to 3: Technical and editorial pre-check. The editorial office screens completeness and format, then an academic editor screens scope fit, redox-mechanism relevance, ethics completeness, integrity, and basic soundness.

The fastest returns happen here, before any reviewer is invited.

• Days 3 to 7: Reviewer invitation. Manuscripts that pass pre-check enter single-blind reviewer search, typically targeting two or more reviewers in the relevant redox or antioxidant subfield.

• Days 7 to 19: Peer review and first decision. Reviewer reports return and the editor issues the first decision, with a median near 18 to 19 days from submission.

Major revision is the most common outcome for papers that clear pre-check.

• Days 19 to 35: Revision and acceptance. Revisions are usually requested on a short clock; resubmission and a second review cycle commonly land acceptance inside a few weeks for in-scope, complete packages.

• Weeks 5 to 6: Production and publication. End-to-end time runs near six weeks at median, so the slow part of the calendar is reviewer search and revision, not production.

This guide was researched and built from primary sources: the sources we checked include the Antioxidants Instructions for Authors, the journal's aims-and-scope and editorial-process pages, MDPI's research and publication ethics policy and editorial-process documentation, and Manusights pre-submission review patterns from redox-biology manuscripts deciding between Antioxidants and peer redox journals. We compared current MDPI author guidance with Manusights work reviews from authors weighing Antioxidants, Redox Biology, Free Radical Biology and Medicine, Antioxidants & Redox Signaling, and Molecules. Last reviewed by the Manusights editorial team on 2026-06-06.

Source limitations: MDPI can update the APC, article-format details, abstract caps, and editorial-process numbers after this review date, and MDPI journal page blocks automated fetching, so verify final administrative details against the official Antioxidants author pages before upload. Median timelines are reported by the journal and vary by subfield. Use this guide for the decision the official instructions cannot answer: whether your mechanism framing, scope angle, declarations block, and reporting compliance are ready for the MDPI pre-check.

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Before you upload, run your manuscript through an Antioxidants submission readiness check to catch the scope, mechanism, ethics, and reporting gaps the MDPI pre-check filters for. The check is free to run (/ai-review) and takes a single upload.