Walnut Leaf Extract Powder

Walnut Leaf Extract Powder is a concentrated botanical ingredient produced from the leaves of Juglans regia L., the English or Persian walnut tree in the Juglandaceae family. The defined raw material is the leaf, distinguishing the ingredient from walnut kernel, shell, green hull, walnut oil, and black walnut (Juglans nigra) preparations.

Available grades include 4:1 and 10:1 ratio extracts, with 10:1 serving as the primary commercial specification. The ratio describes the concentration of starting botanical material relative to the finished extract rather than the assay of an individual phytochemical. Walnut leaf naturally provides a diverse profile of flavonoids, phenolic acids, tannins, and related secondary metabolites.

SKU: BOT-BEX-0618 Categories: Botanical Extracts, Leaf & Herb Extracts Tags: Dietary Supplements, Flavonoids, Juglans regia, Leaf, Walnut Leaf

Ingredient Profile & Common Uses

Walnut leaf extract is produced specifically from Juglans regia leaves, pharmacognostically identified as Juglandis folium. English walnut leaf and Persian walnut leaf are additional names for the same botanical source. Clear plant-part identification is commercially important because walnut-derived ingredients may also originate from the hull, shell, or kernel, each with a different chemical and formulation profile.

The 10:1 grade provides the principal concentrated format for botanical ingredient sourcing, while 4:1 offers a lower-ratio alternative. These specifications represent botanical concentration rather than standardization to juglone, flavonoids, or another individual compound, allowing formulators to select an extract according to concentration and inclusion requirements.

The ingredient is used in botanical supplements, multi-herb systems, concentrated powder blends, and selected personal-care formulations. Its natural polyphenolic composition can contribute visible botanical color, astringency, and a characteristic plant-derived sensory profile. These properties are relevant when balancing the extract with other concentrated botanicals in dry formulations.

Application Areas

Botanical Capsules & Tablets

Walnut leaf extract can be incorporated into single-botanical and multi-ingredient capsules or tablets where a concentrated Juglans regia leaf ingredient is required.

Multi-Botanical Formulations

The extract can be combined with other herbal ingredients in complex botanical systems. Concentration, sensory impact, and total botanical load are useful considerations during formulation.

Functional Powder Blends

Powdered extract can be incorporated into dry premixes and botanical powder systems, with attention to uniform distribution, finished-product color, and astringent sensory characteristics.

Personal-Care Formulations

Juglans regia leaf extract may also be evaluated in selected botanical personal-care and topical formulations where walnut leaf identity and polyphenolic composition are relevant.

Typical Specifications

Specification	Information
Product Name	Walnut Leaf Extract Powder
Botanical Name	Juglans regia L.
Botanical Family	Juglandaceae
Common Names	Walnut Leaf · English Walnut Leaf · Persian Walnut Leaf
Pharmacognostic Name	Juglandis folium
Plant Part	Leaf
Ingredient Type	Botanical Ratio Extract
Product Form	Powder
Available Ratio Grades	4:1 · 10:1
Primary Commercial Grade	10:1
Botanical Substance Reference CAS	84012-43-1
FDA UNII	85HKB87105
Characteristic Chemical Family	Polyphenols
Characteristic Constituents	Flavonoids · phenolic acids · tannins · naphthoquinone-related constituents
Representative Flavonoids	Quercetin glycosides · kaempferol derivatives

Key Constituents & Extract Profile

The chemical profile of Juglans regia leaves is characterized by several polyphenolic families rather than one universally defining active compound. Published analyses identify multiple quercetin glycosides, including rhamnoside, arabinoside, xyloside, and galactoside derivatives, together with kaempferol-related flavonoids, phenolic acids, and tannin compounds.

Juglone is strongly associated with the Juglans genus, but it should not be used as the sole chemical identity of dried walnut leaf extract. Its presence does not describe the complete phytochemical profile, and dried leaf material can contain substantially lower levels than fresh walnut tissues.

For ingredient evaluation, botanical identity and the broader flavonoid and phenolic fingerprint therefore provide a more useful description than treating the material as a purified juglone ingredient. This also differentiates walnut leaf extract from green hull extracts and other walnut-derived materials marketed under similar names.

Technical & Quality Considerations

Botanical authentication is particularly important for this ingredient. Quality evaluation should establish Juglans regia as the botanical source and leaf as the plant part while differentiating the material from Juglans nigra, green hull, shell, and kernel ingredients. Chromatographic fingerprinting can further support botanical consistency and identity assessment.

The extract’s tannin and polyphenol content can influence powder color, botanical taste, and astringency. These characteristics may become more noticeable as inclusion level increases or when the extract is combined with other strongly colored or tannin-rich botanicals. Physical compatibility and sensory interaction are therefore relevant during development.

For dry-product scale-up, formulators should assess blend homogeneity, powder distribution, capsule filling, compression behavior, and finished-product sensory characteristics. Premixing with a larger-volume component can improve uniformity at low inclusion levels, while bench-scale trials can help identify color or taste interactions before commercial production.

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.