What Is Walnut oil?

Walnut oil is a carrier oils obtained by steam distillation of the kernels of Juglans regia, primarily cultivated in China (Xinjiang). The resulting oil presents a mild, neutral, characteristic aromatic profile and carries the characteristic chemical fingerprint of its botanical source — principally characteristic essential oil constituents — full gc-ms profile available in coa.

Baisifu Biological Engineering Co., Ltd. supplies Walnut oil to flavor, fragrance, personal care, and wellness brands worldwide. Every batch is produced under a GMP-aligned quality management system and ships with a full Certificate of Analysis covering GC-MS identity, refractive index, specific gravity, and sensory evaluation.

Our Walnut oil is offered in wholesale quantities from 1 kg to 180 kg drums, with OEM and custom-blend services available for buyers seeking proprietary formulations or private-label packaging.

Botanical Origin & Chemical Profile

The commercial value of Walnut oil is anchored in its volatile chemical fingerprint. Steam distillation of the kernels of Juglans regia yields an oil whose principal constituents include characteristic essential oil constituents — full gc-ms profile available in coa. Full quantitative GC-MS breakdown is documented in every Certificate of Analysis, with tight tolerance windows for each marker constituent. For flavor and fragrance formulators, this chemistry matters in three ways: (1) the major constituent determines the oil’s sensory lead note and intensity; (2) the minor constituents round out the profile and distinguish a flat, synthetic-smelling lot from a layered, natural one; (3) the constituent ratios are stable across seasons only when the botanical source and harvest window are controlled — which is why single-origin, contract-grown supply commands a premium in regulated markets.

Technical Specifications

Specifications are typical ranges; exact values for each batch are documented in the COA. Custom specifications (extra-dry, color-sorted, terpene-stripped, organic-certified) available on request.

Extraction & Quality Control

Our Walnut oil is produced by low-temperature steam distillation of freshly harvested or gently dried kernels of Juglans regia. The process is controlled at three critical points: (a) raw-material pre-grading — only kernels meeting moisture, foreign-matter, and botanical-identity specs enter the still; (b) distillation parameter control — steam temperature, charge density, and distillation time are logged per batch to prevent thermal degradation of heat-sensitive terpenes and esters; (c) post-distillation finishing — the crude oil is settled, water-separated, and optionally winterized or filtered to remove waxes and particulates before filling. Every finished batch is sampled and tested by GC-MS, refractive index, specific gravity, optical rotation, and sensory panel before release. A retained sample from each lot is archived for 24 months for trace-back in the event of a customer-side quality query.

Applications & Use Cases

Stability, Solubility & Formulation Notes

Walnut oil is a moderately oxidation-sensitive botanical oil. The dominant characteristic essential oil constituents — full gc-ms profile available in coa fraction is generally stable under proper storage, but trace terpenes and aldehydes can polymerize or oxidize on extended exposure to air, light, or heat — producing off-notes and darkened color. For maximum shelf life, store in full, sealed, amber or aluminum containers under nitrogen blanket at 5-25°C, away from direct sunlight and oxygen. In formulation, Walnut oil is soluble in ethanol and fixed/carrier oils and practically insoluble in water; for water-soluble applications request our water-soluble grade (emulsified or microencapsulated) for beverage and clear-gel systems. Recommended working dosage in flavor systems is typically 0.001-0.1% depending on the food matrix and desired intensity; in fragrance systems, 0.5-5% for fine fragrance and higher for functional perfumery. Always bench-test in your specific matrix — botanical oils can interact with proteins, preservatives, and packaging materials in ways that single-constituent aroma chemicals do not.

Sourcing & Sustainability

Baisifu sources its kernels from contracted grower clusters in China (Xinjiang) under multi-year supply agreements. This contracted-origin model delivers three procurement advantages: (1) price stability — fixed agronomic costs buffer against seasonal spot-market volatility that plagues spot-purchased botanicals; (2) chemical consistency — single-region sourcing narrows the natural chemotype variation that exists across growing regions, giving formulators tighter batch-to-batch predictability; (3) full traceability — every drum can be traced back to the grower cluster, harvest window, and distillation batch, which is increasingly non-negotiable for buyers serving EU REACH, US FDA FSMA, and clean-label audit frameworks. For buyers requiring organic, FairWild, or specific regional certification, please specify at RFQ stage — lead times for certified lots run 4-8 weeks depending on season and certification scope.

Quality, Compliance & Traceability

Frequently Asked Questions