About
Whole grain maize flour is produced by milling the entire corn kernel (Zea mays L.) — including the bran/pericarp, germ, and endosperm — into a flour, retaining all anatomical fractions in their naturally occurring proportions. It is used as a staple food ingredient in tortillas, porridges, breads, and snacks, valued for its dietary fibre, complex carbohydrates, vitamins, and minerals.
Safety summary
Whole grain maize flour is broadly safe for the general adult population and is associated with reduced risks of cardiovascular disease, type 2 diabetes, and certain cancers. The primary food safety concern is naturally occurring mycotoxin contamination (particularly aflatoxins, fumonisins, and deoxynivalenol), which is regulated by major authorities including EFSA, FDA, and Codex Alimentarius; properly sourced and stored flour within regulatory limits poses no significant health risk. No ADI is established as it is a whole food ingredient, not a food additive.
Regulatory landscape
| Jurisdiction | Status | Note |
|---|---|---|
| FDA (Food and Drug Administration) (United States) | Restricted | FDA monitors maize flour for mycotoxins (aflatoxins, fumonisins, deoxynivalenol, ochratoxin A, zearalenone) under its Mycotoxins Monitoring Program. Action levels for aflatoxin in corn are 20 µg/kg (human food). Compliance Policy Guide Sec. 555.400 governs adulteration with aflatoxin.source |
| EFSA (European Food Safety Authority) (European Union) | Approved | Whole grain maize flour is an approved food ingredient in the EU. EFSA sets maximum levels for mycotoxins in maize-based products under Commission Regulation (EC) No 1881/2006 and amendments: total aflatoxins ≤4 µg/kg, DON ≤750 µg/kg (processed maize), fumonisins (FB1+FB2) ≤1000 µg/kg for maize flour. Health claims for whole grain as a broad food category have not been approved due to insufficient characterization under Regulation (EC) No 1924/2006.source |
| FSSAI (Food Safety and Standards Authority of India) (India) | Approved | Maize (Zea mays Linn.) is regulated under FSSAI Food Safety and Standards (Cereals and Cereal Products) standards. Standards specify moisture, damaged grain limits, and contaminant/toxin compliance under FSS (Contaminants, Toxins and Residues) Regulations, 2011. Maize flour products may contain food additives permitted in Appendix A.source |
Who should approach with care
Research citations
- 1WHO. WHO Guideline: Fortification of Maize Flour and Corn Meal with Vitamins and Minerals. ncbi.nlm.nih.gov
- 2EFSA. Aflatoxins in food – EFSA topic page. efsa.europa.eu
- 3PubMed. Effects of Corn Flour Consumption on Human Health across the Lifespan: A Scoping Review, 2024. pmc.ncbi.nlm.nih.gov
- 4WHO. WHO Fact Sheet: Mycotoxins, 2023. who.int
- 5PubMed. Health Benefits of Dietary Whole Grains: An Umbrella Review of Meta-analyses, 2017. pubmed.ncbi.nlm.nih.gov
- 6FDA. Draft Guidance for Industry and FDA Staff: Whole Grain Label Statements, 2006. fda.gov
