Gallnut Extract Powder

Gallnut Extract Powder is a tannin-rich botanical ingredient produced from the galls of Quercus infectoria Olivier, an oak species in the Fagaceae family. The gall is the commercial raw material rather than the leaf, bark, or acorn, giving the ingredient a distinctive profile dominated by hydrolysable tannins and related polyphenols.

Essencefield supplies Gallnut Extract Powder standardized to 30% total tannins. The ingredient is provided as a fine powder for botanical supplement, dry-blend, capsule, tablet, and sachet development, with the standardized tannin level providing a defined specification for formulation, supplier qualification, and repeat commercial sourcing.

SKU: BOT-BEX-0346 Categories: Botanical Extracts, Whole Plant & Specialty Extracts Tags: Antioxidant Support, Dietary Supplements, Gallnut, Polyphenols, Quercus infectoria

Ingredient Profile & Common Uses

Quercus infectoria galls are specialized plant tissues formed on the oak and naturally accumulate high levels of hydrolysable tannins. Gallnut Extract Powder is therefore commercially distinct from ordinary oak bark, leaf, or acorn extracts. Its identity is defined by the gall raw material, the Quercus infectoria botanical source, and its concentrated polyphenol profile.

Commercial gallnut ingredients can be supplied as ratio extracts or as standardized tannin extracts. Essencefield’s core specification is 30% total tannins, which defines the ingredient by measured tannin content rather than raw-material-to-extract ratio. This distinction is important because extract ratio and standardized assay describe different aspects of ingredient concentration and should not be compared as equivalent specifications.

The powder is used in formulations requiring a concentrated source of gall-derived polyphenols. Its pronounced astringency and affinity for proteins and metal ions are important formulation characteristics. These properties are especially relevant in mineral-containing, protein-rich, transparent, or flavor-sensitive systems where interactions may influence taste, clarity, color, or physical stability.

Application Areas

Capsules and Tablets

The concentrated powder format is suitable for capsule and tablet formulations where astringency can be contained within the dosage form. Flow, excipient compatibility, compression behavior, and blend uniformity should be evaluated during scale-up.

Botanical Powder Blends

Gallnut extract can be incorporated into botanical and polyphenol blends. Particle distribution, powder density, and staged premixing should be evaluated to support consistent blend uniformity and finished-product appearance.

Sachets and Stick Packs

The fine powder format supports sachet and stick-pack development. Formulators should evaluate dispersion, sedimentation, flavor impact, and astringency under the intended dilution ratio and final-use conditions.

Oral-Care and Topical Formulation Development

Gall-derived tannins can be evaluated in oral-care and topical systems where plant polyphenols and astringent characteristics are relevant. Compatibility with proteins, minerals, surfactants, polymers, and finished-product pH should be assessed during formulation development.

Application Areas

Capsules and Tablets

Botanical Powder Blends

Sachets and Stick Packs

Oral-Care and Topical Formulation Development

Hydrolysable Tannins & Gallotannin Profile

The characteristic chemistry of Quercus infectoria galls is dominated by hydrolysable tannins, particularly gallotannin-type compounds. These structures contain multiple galloyl groups associated with a central carbohydrate framework and contribute strongly to the concentrated polyphenol profile and astringent character of the gall material.

Gallic acid, ellagic acid, and related phenolic constituents occur within the broader extract profile and help differentiate gallnut extract chemically from generic oak-derived ingredients. Their presence does not mean that the finished extract should be treated as an isolated gallic-acid or tannic-acid ingredient.

For procurement, the important distinction is between a botanical extract standardized by total tannins and products defined by other specification systems. A 30% total-tannin extract represents a different commercial ingredient from a ratio extract, purified tannic acid, or isolated gallic acid, even when these materials originate from tannin-rich gall sources.

Technical & Quality Considerations

Quality evaluation should begin with authentication of the Quercus infectoria gall raw material and clear definition of the assay basis. Analytical comparison is meaningful only when the measured parameter and method are aligned. Titrimetric, spectrophotometric, and compound-specific chromatographic methods answer different analytical questions, so supplier qualification should focus on the method associated with the declared commercial specification.

Hydrolysable tannins contain multiple phenolic groups capable of interacting with proteins and metal ions. In finished formulations, these interactions can affect haze, precipitation, color, taste, and physical stability. Water dispersibility should therefore be evaluated separately from true molecular solubility, particularly in transparent liquids, protein systems, mineral blends, and concentrated premixes.

For dry-product scale-up, R&D teams should evaluate powder density, particle-size compatibility, staged premixing, flow, capsule filling, and tablet compression. For liquid or reconstituted products, test the complete formulation under intended processing conditions. Protein concentration, mineral content, pH, ionic strength, order of addition, mixing intensity, and storage conditions can materially influence dispersion and stability.

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.