Ash Bark Extract Powder

The bark of Fraxinus rhynchophylla, the Chinese ash called qinpi in East Asian herbal practice, is the starting point of this ash bark extract. The bark is extracted in water, concentrated and dried to a light brown powder. Leaves, samaras and wood are not part of the material.

This ash bark extract is a 10:1 ratio extract and has no marker assay. The powder is ground to 80 mesh and disperses in water. No coumarin percentage is stated, so the product is defined by species, part and ratio.

SKU: BOT-BEX-0187 Category: Botanical Extracts Tags: Ash, Bark & Stem, Bars & Bakery, Gummies & Chews, Plant Extracts, Water Extracted

Fraxinus rhynchophylla Bark Source & Identity

The botanical entity is Fraxinus rhynchophylla Hance, a deciduous tree of the olive family, Oleaceae, native to northeast Asia. The part used is the bark. GBIF lists this name as a synonym of Fraxinus chinensis, so literature may use either. This ash bark extract uses the name on the master record.

Ash bark is often confused with unrelated barks. European ash, Fraxinus excelsior, is a different species, and the “prickly ash” barks of North America belong to Zanthoxylum, a different family altogether.

Hydroxycoumarins such as esculin, esculetin, fraxin and fraxetin are the characteristic constituent family.

Ash Bark Extract vs Pure Coumarins

Form	What It Is	Choose It When
10:1 Ash Bark Extract	Water extract of F. rhynchophylla bark with its whole coumarin and phenolic profile	A whole-bark profile in a dispersible powder is needed
Esculetin 98%	Pure coumarin aglycone, a single compound grade	The brief names esculetin as the ingredient
Esculin 98%	Pure coumarin glycoside, a single compound grade	The brief names esculin as the ingredient
Fraxetin 98%	Pure coumarin, a single compound grade	The brief names fraxetin as the ingredient

The 10:1 ratio measures bark going into the ash bark extract. It is not a coumarin assay. Choosing among the four rows is a choice of specification basis: a ratio extract of the bark, or a pure compound named in the bark’s constituent family.

Aqueous esculin shows a characteristic blue fluorescence under ultraviolet light, a property long used for the identification of qinpi. This extract is not described by that figure, but the fluorescence is a useful lab check on the starting material.

Typical Specifications

Specification Item	Product Information
Latin Name	Fraxinus rhynchophylla
Plant Part	Bark & Stem
Processing	Water Extraction
Common Name	Chinese Ash Bark, Qin Pi
Ingredient Type	Ratio Extract
Extract Ratio	10:1
Appearance	Light Brown powder
Solubility / Dispersibility	Water Dispersible
Quality Parameters
Moisture (LOD)	≤5.0%
Total Ash	≤5.0%
Particle Size	80 mesh
Heavy Metals	Lead ≤2 ppm · Arsenic ≤1 ppm · Cadmium ≤1 ppm · Mercury ≤0.1 ppm
Microbiology	TPC ≤1,000 cfu/g · Yeast & Mold ≤100 cfu/g · E. coli Negative · Salmonella Negative/25 g
Shelf Life	24 months in unopened original packaging, cool and dry storage

Application Areas

Capsules for Bark Extracts

Ash bark extract fills hard capsules after a flow check at 80 mesh. Bark extracts are normally denser than flower or leaf extracts, so capsule fill weight is rarely a limit. A glidant helps if the powder arches over the hopper outlet.

Tablets with Light Coating

A dry binder carries the blend through the press, with the lubricant added in the final minutes of mixing. The light brown core is easy to cover with a standard film coat. Measure hardness again after a week of storage, since polar bark extracts soften as they take on moisture.

Tea-Style Instant Sticks

The extract disperses in hot water to a brown cup with a slight haze. A roasted-grain or spice flavour suits the bark’s tannin-like astringency better than a bright fruit note. Taste at the planned dose before setting the stick fill weight.

Dry-Blended Drink Mixes

Ash bark extract blends well in drink mixes that use a fibre or sugar carrier. Sieve it with the carrier before mixing to keep the brown tone even from the first sachet to the last, and check dose uniformity at the start, middle and end of the filling run.

Bar and Gummy Premixes

Bars and gummies receive the extract through a dry premix with part of the sugar. The dry, slightly astringent taste of the bark suits ginger, cocoa or caramel flavours, and the light brown powder is easy to hide in a coloured gummy. Add the extract after the cooking step if heat exposure is a concern.

Formulation Notes

Ash bark extract is a light brown powder with a mild woody odour and a dry, slightly astringent taste. Esculin-type coumarins give aqueous solutions a faint blue-green shimmer under strong light, which can be mistaken for a fault. The dispersion is lightly hazy and its colour deepens a little on standing.

Add the ash bark extract into agitated water, or wet it with a small volume of liquid first, to avoid lumps that do not redisperse. Pass the powder and a portion of the carrier through a sieve together before they enter a dry blender. Close the liner after weighing and keep the opened drum dry, out of direct heat and away from washdown areas.

Ash bark extract carries phenolic and coumarin compounds that react with iron, so low-iron water is advisable for trials. Check colour and clarity in the actual base before the dose is fixed.

Packaging & Commercial Supply

Essencefield supports product evaluation, formulation trials, commercial orders, and ongoing ingredient supply. Packaging, storage, and shipping arrangements are determined by product characteristics, order quantity, stability requirements, and destination-market needs.

Supply Item	General Information
Sample	Available upon request for formulation, testing, and supplier evaluation
Order Quantities	100 g · 1 kg · 5 kg · 25 kg · 100 kg · 500 kg · Bulk
Sample Lead Time	Typically 5–7 days after sample confirmation
Production Lead Time	Typically 15–30 days after order and specification confirmation
Packaging	Suitable protective inner packaging with bags, cartons, drums, or other appropriate outer packaging
Storage	Store in tightly sealed, suitable protective packaging in a cool, dry environment. Protect from moisture, heat, and direct sunlight. Specific storage conditions follow the approved product specification.
Documentation	COA · Product Specification · TDS · SDS · Applicable declarations (as applicable)

Final order quantities, lead times, packaging, documentation, and shipping arrangements are confirmed according to the selected product and commercial requirements.