Tanzania Updates Maize Grain Specifications for Human Consumption

Tanzania has issued updated specifications for maize grain intended for human consumption, establishing quality and safety standards for Zea mays indentata and Zea mays indurata varieties.

Compliance Analysis: Uganda’s Regulatory Standards for Maize Grain Intended for Human Consumption

Uganda, as a member of the East African Community (EAC), aligns its maize grain standards with the Draft East African Standard (DEAS 2: 2026) – Maize grain — Specification, which establishes comprehensive quality and safety requirements for maize varieties Zea mays indentata (dent maize) and Zea mays indurata (flint maize), as well as their hybrids, intended for human consumption. While Tanzania has updated its specifications, Uganda’s compliance framework is governed by the EAC standard, which is directly applicable in Uganda under the East African Community Customs Union (Common Market) Protocol and the Uganda National Bureau of Standards (UNBS) Act, 1983 (Cap. 327). Below is a structured breakdown of Uganda’s regulatory requirements for maize grain, derived exclusively from the provided EAC sources.

1. Scope and Applicability

The DEAS 2: 2026 standard applies to maize grain of the varieties Zea mays indentata L. (dent maize), Zea mays indurata L. (flint maize), Zea mays everta (popcorn), and their hybrids intended for human consumption¹. It does not cover maize for animal feed or industrial use.

2. Key Regulatory Requirements

A. General Requirements

Maize grain must comply with the following baseline criteria¹:

• Practically free from:
  • Foreign odours,
  • Moulds,
  • Live pests,
  • Toxic or noxious weed seeds (e.g., Crotalaria spp., Ricinus communis, Datura spp.),
  • Other edible grains (e.g., cereals, pulses).
• Hygiene: Production, preparation, and handling must adhere to EAS 39 – General principles of food hygiene¹.

B. Specific Quality Requirements

Maize grain must meet the grade-specific thresholds outlined in Table 1 of DEAS 2: 2026 for defects, moisture content, and contaminants¹. Key parameters include:

Notes:

• Total defective grains is not the sum of individual defects but is capped at 70% of the sum of individual defects¹.
• Discoloured grains must exhibit ≥25% discolouration on both sides of the kernel to be counted¹.

C. Popcorn-Specific Requirements

For popcorn (Zea mays everta), additional requirements apply to the expansion ratio (volume of popped kernels per gram), as specified in Table 2 of DEAS 2: 2026¹:

D. Contaminant Limits

Maize grain must comply with the following maximum limits for contaminants and toxins¹:

E. Packaging and Labelling Requirements

Packaging

• Must use food-grade packaging material that preserves hygienic, nutritional, and organoleptic qualities¹.
• Packages must be securely closed and sealed¹.

Labelling (Retail Containers)

Each package must be legibly and indelibly labelled with the following¹:

1. Product name: e.g., "White maize grain," "Yellow maize grain," "Red maize grain," "Mixed maize grain," or "Popcorn grain."
2. Grade (e.g., Grade 1, Grade M2).
3. Name, address, and physical location of the producer/packer/importer.
4. Lot/batch/code number.
5. Net weight (metric units).
6. Declaration: "Food for human consumption."
7. Storage instructions: "Store in a cool dry place away from any contaminants."
8. Crop year.
9. Packing date.
10. Disposal instructions for used packaging.
11. Country of origin.
12. Genetically modified (GM) declaration, if applicable.

Labelling (Non-Retail Containers)

• Information may be provided on the container or in accompanying documents, except for:
  • Product name,
  • Lot identification,
  • Name/address of processor/packer,
  • Storage instructions (must appear on the container).
• Lot identification and processor/packer details may be replaced by an identification mark if linked to accompanying documents¹.

F. Sampling and Testing

• Sampling must follow EAS 900 – Cereals, pulses and their products — Sampling¹.
• Test methods must comply with EAS 901 – Cereals, pulses and their products — Test methods¹.

G. Classification of Maize Grain

Maize is classified by colour and shape¹:

3. Enforcement and Compliance

• Authority: The Uganda National Bureau of Standards (UNBS) is responsible for enforcing EAC standards under the UNBS Act, 1983 (Cap. 327) and the East African Community Customs Management Act, 2004.
• Penalties: Non-compliance may result in:
  • Seizure of non-conforming products,
  • Fines or imprisonment under the UNBS Act,
  • Denial of market access for exports to EAC Partner States.
• Certification: Maize grain intended for trade must undergo conformity assessment by UNBS or an accredited body, including testing for contaminants, moisture content, and grading¹.

4. Comparison with Tanzania’s Specifications (Contextual Note)

While the user referenced Tanzania’s updated specifications, Uganda’s requirements are governed by the EAC standard (DEAS 2: 2026), which is harmonized across all EAC Partner States, including Uganda. Key differences (if any) would arise from national deviations permitted under EAC protocols, but the provided sources do not indicate such deviations for Uganda. Thus, the above requirements represent Uganda’s binding standards.

Summary Answer

Uganda’s regulatory framework for maize grain intended for human consumption is established under the Draft East African Standard (DEAS 2: 2026) – Maize grain — Specification, which mandates:

1. Quality thresholds for defects (e.g., ≤ 5% total defective grains for Grade 1), moisture content (≤ 13.5%), and contaminants (e.g., ≤ 10 µg/kg total aflatoxins)¹.
2. Packaging and labelling requirements, including food-grade materials, secure sealing, and mandatory declarations (e.g., product name, grade, country of origin, GM status)¹.
3. Sampling and testing in accordance with EAS 900 and EAS 901¹.
4. Hygiene compliance with EAS 39¹.
5. Classification by colour (yellow, white, red, mixed) and shape (flint, dent, or mixed)¹.

Enforcement is led by the Uganda National Bureau of Standards (UNBS), with penalties for non-compliance including product seizure and legal action¹. The standard applies uniformly across the EAC, ensuring regional harmonization.

Sources

1. ↩ WTO SPS notification 26-02725 — Tanzania https://members.wto.org/crnattachments/2026/SPS/TZA/26_02725_00_e.pdf
2. WTO TBT notification 26-02730 — Tanzania https://members.wto.org/crnattachments/2026/TBT/TZA/26_02730_00_e.pdf