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Ashitaba

Ashitaba suppliers and sourcing guide

Ashitaba is Angelica keiskei, a large perennial in the carrot family native to Japan's Izu Islands, grown for its leaves and stems. When the stems are cut they release a yellow sap rich in chalcones (xanthoangelol and 4-hydroxyderricin). The trade sells dried leaf and stem powder, and sap powders standardized to chalcones, often dried with cyclodextrin.

See suppliersWhat to ask for on the COA
Also known as
Angelica keiskei · ashitaba sap · ashitaba chalcone · tomorrow's leaf
Facts checked
November 2026

Forms and grades of ashitaba

Suppliers sell different products under the same name. Specify the one you need.

  • Leaf and stem powder

    Dried, milled aerial parts, used in green drink powders and teas, not standardized.

  • Sap powder standardized to chalcones

    Yellow sap collected from cut stems and dried, often with cyclodextrin, and sold on a declared chalcone percentage by HPLC.

  • Leaf extract

    Water or water-ethanol extract of leaves and stems dried to a powder.

  • Organic

    Powder from certified organic crops, with the certificate tied to the lot.

What to check on the COA

Compare each result with your own specification when the lot arrives.

Identity (HPLC)
Chalcone profile (xanthoangelol, 4-hydroxyderricin) to confirm Angelica keiskei.
Chalcone assay (HPLC)
Total chalcones by a named HPLC method for standardized sap powders.
Furanocoumarins
Furanocoumarin content by HPLC, which buyers and regulators look at for Angelica species.
Heavy metals
Lead, arsenic, cadmium and mercury by ICP-MS, checked against the buyer's limits and any Prop 65 exposure targets.
Microbiology
Total plate count, yeast and mold, E. coli or coliforms, and Salmonella.
Physical tests
Loss on drying, mesh or particle size, bulk density and, for extracts, the extract ratio, carrier and residual solvent. For sap powders, the cyclodextrin or other carrier percentage.

Storage, lots and expiry

Storage and shelf life

Keep powders sealed in foil bags or lined drums in a cool, dry, dark place; chalcones are light and heat sensitive, and green leaf powder fades with air and light. Reseal opened containers promptly. Shelf life or a retest date comes from the supplier's specification.

Lots and expiry dates

Chalcone content varies with harvest, stem versus leaf share and drying, so check each lot's assay and carrier percentage against your specification. Record the supplier lot and rotate stock first-expiry-first-out.

Regulatory status

Facts from regulators and standards bodies, each linked to its source.

  • GRN 1012, for powdered sap from Angelica keiskei (ashitaba) containing 8% chalcones notified by Japan Bio Science Laboratory-USA, closed on Apr 7, 2022 with FDA ceasing to evaluate the notice at the notifier's request.

    Source: hfpappexternal.fda.gov (opens in a new tab)

  • In a 2024 opinion on Japan Bio Science Laboratory-USA's novel food application, EFSA's NDA Panel concluded that ashitaba sap, collected from harvested Angelica keiskei stems, is safe for adults (the target population) at intake levels up to 137 mg per day.

    Source: pmc.ncbi.nlm.nih.gov (opens in a new tab)

This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.

Ashitaba suppliers

Manufacturers and distributors whose own websites say they sell it.

We are checking ashitaba suppliers now

Every listing is checked against the supplier’s own website before it goes live, so this list fills in over the coming weeks. The specs and COA checklist above are ready today.

Sell ashitaba? Request a listing

Frequently asked questions

What forms of ashitaba can brands buy?

Common forms include leaf and stem powder, sap powder standardized to chalcones, leaf extract and organic. Ask each supplier for the specification sheet of the exact grade they quote.

What should the COA for ashitaba include?

Expect identity (HPLC), chalcone assay (HPLC), furanocoumarins, heavy metals, microbiology and physical tests, each with its method, specification and result for that lot.

How should ashitaba be stored?

Keep powders sealed in foil bags or lined drums in a cool, dry, dark place; chalcones are light and heat sensitive, and green leaf powder fades with air and light. Reseal opened containers promptly. Shelf life or a retest date comes from the supplier's specification.

What is the regulatory status of ashitaba?

GRN 1012, for powdered sap from Angelica keiskei (ashitaba) containing 8% chalcones notified by Japan Bio Science Laboratory-USA, closed on Apr 7, 2022 with FDA ceasing to evaluate the notice at the notifier's request. In a 2024 opinion on Japan Bio Science Laboratory-USA's novel food application, EFSA's NDA Panel concluded that ashitaba sap, collected from harvested Angelica keiskei stems, is safe for adults (the target population) at intake levels up to 137 mg per day.

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