Moringa went from an obscure Indian vegetable to a top-ten superfood search term in a decade, and the supply chain did not keep up. A great deal of what was sold in the early years was leaf dried on the ground, brown, and carrying microbial loads that should never have reached a capsule. The brands that survived learned to specify three things: microbiology, heavy metals and colour.
This guide covers those three and everything around them — how the leaf should be grown and dried, what the regulators say in the US, UK, Ireland and EU, and what drives the price. It reflects how ODOD Group supplies its own moringa leaf powder.
Microbiology first
Moringa leaf is harvested green and wet, and dried. If it is dried on the ground in the sun — which is how most of the world's moringa is still dried — it picks up soil bacteria, moulds and, often enough, Salmonella. Total plate counts above 10⁶ cfu/g are routine in cheap powder. A supplement manufacturer working under cGMP (21 CFR 111 in the US) or the EU/UK food-supplement rules cannot use that.
The fix is process, not testing: a potable-water wash with a sanitiser rinse, drying on stainless racks in ventilated shade houses, and a validated steam treatment before milling. The result is a total plate count of 10⁴ cfu/g or lower with Salmonella and E. coli absent, confirmed on every lot. Ethylene oxide, the other route to low counts, is banned for food in the EU and UK; insist on steam.
Heavy metals
Moringa is a leaf crop and accumulates whatever is in the soil and irrigation water. The EU contaminant regulation (2023/915) allows up to 3.0 mg/kg lead and 3.0 mg/kg cadmium in dried leaf-based food supplements; the UK carries the same figures; in the US, California's Proposition 65 sets warning thresholds so low that a brand wants the cleanest lots available. Work to a specification well inside the law — under 1.0 mg/kg lead, 0.2 cadmium, 0.5 arsenic, 0.05 mercury — and require ICP-MS results on each lot. Plantation moringa on tested soils is how those numbers are met.
Colour: the visible proxy
Vivid green moringa has been dried gently and quickly in shade below 45 °C; it has kept its chlorophyll and with it much of its vitamin content and fresh flavour. Olive or brown powder has been sun-dried, over-heated or stored badly. Colour is the one quality parameter a customer can judge without a laboratory, which is why retail brands specify it with a reference sample and L*a*b* values.
Regulatory status by market
United States. Moringa leaf is a dietary ingredient with established use; finished supplements are made under 21 CFR 111 cGMP, and the manufacturer needs the supplier's specification, COA and identity testing. FSVP importer verification and Prior Notice apply to the import.
European Union and Ireland. Moringa oleifera leaves are listed in the EU Novel Food Catalogue as not novel on the basis of a history of consumption, so leaf powder can be used in foods and supplements without novel-food authorisation. Contaminant limits in Regulation 2023/915 and residue limits in Regulation 396/2005 apply; health claims need authorisation under Regulation 1924/2006 (none are authorised for moringa — describe the nutrient content instead). Moringa pods from India have appeared on the increased-controls list; check the current Annexes for the form you import.
United Kingdom. The same not-novel position and assimilated contaminant and residue law; check the UK high-risk list per shipment.
Specification checklist
- Botanical identity (Moringa oleifera Lam., leaf), variety and plantation origin.
- Moisture ≤ 7 %; protein 22–28 %; ash and acid-insoluble ash.
- Colour against a reference; L*a*b* on request.
- Microbiology: TPC, yeasts and moulds, E. coli, Salmonella — per lot.
- Heavy metals by ICP-MS — per lot.
- Pesticide multi-residue screen; ETO not detected.
- Mesh size; nitrogen-flushed packaging; shelf life at receipt.
Organic
Organic moringa is widely available from NPOP-certified plantations and accepted under USDA NOP and EU/UK equivalence; the EU certificate of inspection in TRACES is issued before shipment. Organic does not by itself guarantee low microbial counts — the drying process does — so specify both.
Packaging, storage and freight
10 kg nitrogen-flushed lined cartons or 20 kg foil-laminated bags; retail pouches through co-packers. Keep it below 25 °C and away from light; chlorophyll fades in the light. 18 months shelf life unopened. A 40-ft high-cube carries about 12 tonnes of powder.
What drives the price
- Plantation cultivation versus wild or roadside collection.
- Rack shade drying and steam treatment.
- Per-lot microbiology, ICP-MS and residue testing.
- Yield — about 5–6 kg of fresh leaf per kilo of powder.
- Organic certification and incoterm.
Before your first order
- Specify microbiology, heavy metals and colour with numbers, not adjectives.
- Ask for the last three lots' COAs.
- Confirm steam (not ETO) treatment and rack drying.
- Sample and check colour, flavour and dispersion.
- Agree packaging, shelf life at receipt and incoterm.
ODOD Group supplies supplement-grade moringa leaf powder from cultivated plantations and HACCP / ISO 22000-certified processors, tested per lot, to nutrition and supplement manufacturers in the US, UK, Ireland and the EU. Request a sample and the reports; we reply within one working day.
Frequently asked questions
Why is microbiology such an issue with moringa?
Because most moringa is dried on the ground in the sun, which loads the leaf with soil bacteria and moulds; counts of 10⁶ cfu/g and Salmonella findings are common in cheap powder. Ours is washed with a sanitiser rinse, dried on racks in shade and steam-treated, and every lot is tested — total plate count 10⁴ or lower, Salmonella and E. coli absent.
Is moringa allowed as a food in the EU and UK?
Yes. Moringa oleifera leaves are listed in the EU Novel Food Catalogue as not novel because of their history of consumption, and the UK takes the same position. Finished supplements must meet the contaminant limits and labelling rules for supplements; we supply the analytical reports those rules require.
What heavy-metal limits do you work to?
Stricter than the law requires. The EU limit for lead in dried leaf-based supplements is 3.0 mg/kg; our specification is under 1.0 mg/kg lead, 0.2 cadmium, 0.5 arsenic and 0.05 mercury, tested by ICP-MS on each lot, which also keeps US brands clear of Proposition 65 warnings at normal serving sizes.
Why is colour important?
Green colour tracks chlorophyll, and chlorophyll tracks gentle drying. Brown moringa has been sun-dried or over-heated, has lost vitamins and flavour, and does not sell on a retail shelf. We grade colour against a reference and print L*a*b* values on request.
Is it treated with ethylene oxide?
No — ETO is not permitted for food in the EU or UK and we do not use it for any market. Microbial reduction is by validated steam treatment; ETO and 2-chloroethanol are tested not detected at 0.02 mg/kg.
Is organic available?
Yes. NPOP-certified organic plantations supply lots accepted under USDA NOP and EU / UK organic equivalence. Specify at quotation.