Wholesome in bulk™ Oregano Leaf Powder
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Bulk Oregano Leaf Powder for Supplement Manufacturing
Oregano leaf powder is a dried, milled herb made from the leaves of Origanum vulgare L. and related Origanum species in the mint family (Lamiaceae). Dried leaf is the main form of oregano in the spice trade. Its aroma comes from a small amount of volatile oil led by carvacrol. We supply it in bulk to supplement brands, contract manufacturers, and formulators.
A widely traded leaf herb with measurable aroma compounds
Oregano leaf is a staple of the global herb trade, so supply is steady and grades are familiar. Its volatile oil and carvacrol give your quality team numbers to check. The main buying decisions are species, origin, and identity testing.
Several species, one trade name
Most traded oregano is Origanum vulgare, including Greek oregano (subsp. hirtum). Turkish oregano (O. onites) is also common. Mexican oregano is Lippia graveolens, a plant from a different family. A good spec names the species in Latin.
Volatile oil led by carvacrol
Dried oregano leaf typically holds 2.5 to 5.0% volatile oil. Carvacrol is usually the main compound in that oil, and GC-MS shows the full profile.
Leaf and oil are two products
Oregano oil is a liquid made by steam distillation of the dried herb. Leaf powder is the whole dried herb, milled. They have different specs, formats, and shipping rules.
Fine, green powder
Ground oregano is usually milled to 80 to 100 mesh. The olive green powder suits capsule filling, tableting, and dry blending.
Mediterranean and Andean supply
In EU testing, most samples came from Turkey, Greece, and Peru, and Albania, Morocco, and Egypt also export it. Origin shapes aroma, so ask for it on every lot.
Strong aroma and flavor
Oregano is warm, pungent, and slightly bitter. Plan taste trials for powders, and expect the aroma to carry into other ingredients in a blend.
Where formulators use oregano leaf powder
This powder fits measured formats and flavor uses, including:
- Capsules
- Compressed tablets
- Single ingredient powders
- Multiple ingredient botanical blends
- Herb and seasoning blends
- Savory food products
- Stick packs and sachets
- Private label programs
Plan fill weights from the confirmed spec on each COA. If your formula calls for oregano oil, use the distilled oil instead, since leaf powder and oil are not interchangeable.
What to check before you buy oregano leaf powder
Two powders sold as oregano can differ in species, origin, and leaf content. Review these points together, and ask for lot documents before you approve a supplier.
Species on paper
Ask for the Latin species name on both the specification and the certificate of analysis (COA). Mexican oregano (Lippia graveolens) is a different plant and needs its own name on a label.
Leaf identity
Once milled, other dried leaves such as olive, myrtle, or marjoram can look like oregano. Ask which identity method the lab used: microscopy, HPTLC, or an LC-MS or GC-MS fingerprint against a reference sample.
Copper and zinc results
EU rules set a maximum residue level of 20 mg/kg copper for oregano. Ask for copper and zinc results with the heavy metals panel, because EU labs use the two together as a quick screen.
Volatile oil and carvacrol
Ask for volatile oil in mL per 100 g and a GC-MS profile of the oil. A low figure can point to old stock or a high share of stems.
Export limits
For EU sale, check pesticide residues against EU limits and ask for a pyrrolizidine alkaloid result. The EU limit is 1,000 µg/kg for dried oregano and 400 µg/kg for herbal food supplements.
Sterilization and micro
Dried herbs are often steam sterilized before sale. Ask which method was used and compare micro counts on the COA with your finished product limits.
Leaf or oil: If your label names oregano leaf, use the dried herb. If it names oregano oil, use the distilled oil, which is a separate product with its own specification.
Typical specification for oregano leaf powder
These values show what a complete oregano specification covers. Final figures come from the specification sheet and COA for your lot. NLT means not less than, and NMT means not more than.
| Parameter | Specification | Method |
|---|---|---|
| Botanical source | Origanum vulgare L., leaf | Microscopy and HPTLC |
| Appearance | Olive green to green brown powder | Visual |
| Volatile oil | NLT 2.5 mL per 100 g | Hydrodistillation |
| Carvacrol in volatile oil | Reported on the COA | GC-MS |
| Stems and foreign matter | Limit on the specification sheet, % | Visual and sieving |
| Moisture | NMT 10.0% | USP <731> |
| Total ash | Limit on the specification sheet, % | USP <561> |
| Particle size | NLT 95% through 80 mesh | USP <786> |
| Lead | NMT 2.0 ppm | ICP-MS |
| Arsenic | NMT 1.0 ppm | ICP-MS |
| Cadmium | NMT 1.0 ppm | ICP-MS |
| Mercury | NMT 0.1 ppm | ICP-MS |
| Copper | NMT 20 mg/kg, for EU sale | ICP-MS |
| Pyrrolizidine alkaloids | NMT 1,000 µg/kg, or 400 µg/kg for EU supplements | LC-MS/MS |
| Pesticide residues | Meets USP <561> and EU limits | GC-MS and LC-MS |
| Sterilization method | Steam sterilized, or as stated on the COA | Supplier declaration |
| Total aerobic count | NMT 10,000 cfu/g | USP <2021> |
| Yeast and mold | NMT 1,000 cfu/g | USP <2021> |
| E. coli and Salmonella | Negative in 10 g and 25 g | USP <2022> |
| Shelf life | 18 to 24 months, unopened | Stability data |
Storage and handling for bulk oregano powder
Ground oregano keeps its aroma best when it stays sealed, cool, and dark. One published spec calls for storage below 15 °C and under 65% relative humidity.
Keep it sealed
Close the inner liner after each use and press out the air. Ground herbs lose aroma to open air and pick up moisture, which can cause caking.
Store cool and dry
Keep bags off the floor in a cool, dry room. Aim for below 15 °C and under 65% relative humidity, or follow the range on your spec sheet.
Keep away from light
Leave the powder in its original opaque packaging. Light and heat fade the green color and the volatile oil over time.
Rotate stock
Record the lot number and retest date for each bag. Send older lots to production first, since aroma drops as powder ages.
Oregano leaf powder buyer FAQ
Quick answers to the questions procurement and quality teams ask most.
Which form of oregano is this?
This page covers dried oregano leaf, milled to a powder. Leaf is the main form of oregano in the spice trade and the one that fits a dry powder line. Oregano oil is a separate product with its own specification.
What is the difference between oregano leaf powder and oregano oil?
Leaf powder is the whole dried herb, while oregano oil is the volatile fraction removed by steam distillation. The leaf holds only about 2.5 to 5% oil, so the oil is far more concentrated in carvacrol. Oil is a liquid used in softgels and liquid formats, with its own safety data sheet and shipping rules.
Is Mexican oregano the same as oregano?
No. Mexican oregano is Lippia graveolens, a plant from the verbena family with a similar aroma. True oregano is Origanum, from the mint family. Name the plant you actually use on your label.
How do you confirm oregano identity in a powder?
Use microscopy plus a chemical fingerprint such as HPTLC, LC-MS, or GC-MS, compared with a reference sample. Many labs also check copper and zinc, because the ratio of the two helps flag leaves that do not belong. Ask your supplier which tests sit behind the COA.
Does oregano need pyrrolizidine alkaloid testing?
Yes, if you sell into the EU. Regulation (EU) 2020/2040 sets a limit of 1,000 µg/kg for dried oregano and 400 µg/kg for food supplements containing herbal ingredients. Ask for an LC-MS/MS result on each lot for export orders.
What documents can I get with an order?
A certificate of analysis (COA) and a specification sheet ship with every order. An allergen statement and a safety data sheet may also be available, depending on the lot in inventory. Contact us to request them.
Can I get a sample before a bulk order?
You can request one by choosing sample options on the quote form. We will confirm availability, size, and timing.
How should I store an opened bag?
Close the liner, press out the air, and keep the bag cool, dry, and dark. Use the powder within the shelf life shown on the COA, oldest lot first.
Request a quote for bulk oregano leaf powder
Tell us the species, mesh, quantity, and timing you need. We will reply with current pricing. Select testing documents and sample options on the quote form.
Order Oregano Leaf PowderBulk orders: Choose a pack size above, or use the quote form for larger volumes, testing documents, and sample options. We serve supplement brands, contract manufacturers, product developers, and formulators.
This bulk ingredient is sold for further manufacturing and formulation. The information on this page describes the ingredient and how commercial buyers evaluate it. It is not medical advice. Each finished product brand is responsible for its own labeling and product claims.
