High-Purity Bioactive Ingredients & Botanicals
Lab-verified raw material supplies manufactured under ISO, Kosher, and EcoVadis-certified clean-science environments for functional nutrition and cosmeceuticals.
Olive Leaf Extract (Olea europaea L.): Industrial Bioactive Standardization
A rigorous biochemical blueprint examining Oleuropein, Hydroxytyrosol, and secoiridoid polyphenol profiling for high-velocity global supply chains.
In the contemporary landscape of high-performance natural therapeutics, standardized Olive Leaf Extract (OLE) stands as one of the most clinically substantiated, chemically stable botanical ingredients. Extracted systematically from the leaves of Olea europaea L., our industrial fractions harbor a concentrated profile of therapeutic secoiridoids, phenylethanoids, and flavonoids. Foremost among these are Oleuropein (CAS: 32619-42-4) and its primary active metabolite, Hydroxytyrosol (CAS: 10597-60-1), recognized worldwide for their potent antioxidant radical scavenging capacity, endothelial nitric oxide preservation, lipid peroxidation reduction, and systemic anti-inflammatory signaling cascades.
As premier Chinese manufacturers and global exporters operating from our 60,000 m² cGMP extraction hub in Xi'an, Xi'an Le-Nutra Ingredients Inc. leverages 14+ years of specialized bioprocess engineering to deliver standardized Olive Leaf Extract ingredients tailored to demanding international pharmacopeias (USP, EP, CP). By deploying low-temperature ethanolic countercurrent liquid-solid extraction coupled with macroporous adsorption resin fractionation and vacuum crystallization, our facilities produce consistent, crystalline, free-flowing powders ranging from standard 20% Oleuropein dietary grades up to pharmaceutical-grade 80% Oleuropein, as well as ultra-bioavailable water-soluble Hydroxytyrosol preparations.
| Analytical Assay Parameter | Commercial Grade (Nutra-20) | High-Potency Active (Pharma-40) | Advanced Dermaceutical (Active-80) | Validation Method |
|---|---|---|---|---|
| Oleuropein Content | ≥ 20.0% | ≥ 40.0% | ≥ 80.0% | HPLC-DAD (Reverse Phase) |
| Hydroxytyrosol Content | ≥ 1.5% - 3.0% | ≥ 5.0% - 10.0% | Standardized to Client Spec | HPLC (280 nm) |
| Physical Form & Color | Fine Olive-Brown Powder | Fine Brown-Yellow Powder | Off-White to Pale Yellow Powder | Visual & Colorimeter |
| Water Solubility (25°C) | 100% Rapid Dispersible | Completely Clear Solution | Transparent / Cosmeceutical | USP <786> Turbidimetry |
| Particle Size Distribution | 95% Through 80 Mesh | 98% Through 80 Mesh | 100% Through 100 Mesh | Analytical Sieve Sizing |
| Heavy Metals (Pb, As, Cd, Hg) | < 10.0 ppm Total | < 5.0 ppm Total | < 2.0 ppm Ultra-Pure | ICP-MS (USP <232>) |
| Residual Solvents | Ethanol < 1,000 ppm | Ethanol < 500 ppm | Zero Detectable Organic Volatiles | HS-GC-MS (USP <467>) |
| Microbiological Bioburden | Total Plate Count < 1,000 cfu/g | Total Plate Count < 500 cfu/g | Sterile Filtration Standard | USP <61> / <62> |
Technical Roadmap & Future Horizons: The Evolution of Botanical Extraction
Advancing from conventional solvent extraction to bio-catalytic enzyme synthesis, green continuous microfluidics, and targeted molecular nano-encapsulation.
Enzymatic Biocatalysis & Hydroxytyrosol Synthesis
Traditional thermal hydrolysis degrades heat-sensitive phenolic rings. Our R&D team implements recombinant β-glucosidase and esterase multi-enzyme bioreactors to cleave the glucoside and elenolic acid moieties from natural Oleuropein at ambient 37°C.
- Achieves >96% stoichiometric conversion to free Hydroxytyrosol
- Eliminates hazardous chemical acidic side-reactions
- Produces 100% natural-source certified Hydroxytyrosol active powder
Continuous Microfluidic Countercurrent Separation
Transitioning from stationary batch tanks to continuous-flow countercurrent microchannel extraction units. This engineering breakthrough decreases solvent contact duration while boosting mass transfer kinetics across dense olive leaf cellular tissues.
- 40% reduction in thermal exposure preserves labile polyphenols
- Automated inline UV-Vis spectrophotometric concentration monitoring
- Minimizes solvent consumption by 65% for lower carbon impact
Liposomal & Cyclodextrin Bioavailability Matrices
Unconjugated Oleuropein exhibits poor intestinal permeability and rapid first-pass glucuronidation. Our pilot encapsulation technology coats active polyphenols in phospholipid liposomes and γ-cyclodextrin molecular inclusion complexes.
- Elevates intestinal enterocyte uptake by up to 4.2-fold
- Neutralizes natural astringent bitterness in functional beverages
- Protects bioactive compounds against gastrointestinal gastric acid
Macro-Industry Solutions: Multi-Sector Commercial Application Formats
Engineered raw ingredient grades optimized for pharmaceutical tableting, RTD beverage solubility, lipophilic cosmetics, and livestock feed nutrition.
Cardiometabolic & Vascular Support Supplements
Olive leaf polyphenols are clinically proven to inhibit low-density lipoprotein (LDL) oxidation and down-regulate angiotensin-converting enzyme (ACE) activity. Our Oleuropein 20%–40% Granular Powder is specially engineered for high-speed direct compression tableting and two-piece hard gelatin or HPMC capsule encapsulation, ensuring minimal friction, high bulk density (0.50–0.65 g/ml), and complete disintegration within 15 minutes.
Primary Synergies: Co-formulation with Le-Nutra Nattokinase, CoQ10, Artichoke Extract Cynarin, and Apigenin for comprehensive endothelial health matrices.
Dermato-Cosmetics & Anti-Photoaging Actives
Exogenous oxidative stress and UV-A radiation generate reactive oxygen species (ROS) that degrade dermal collagen fibers. Our purified Oleuropein 80% and Hydroxytyrosol 20% Cosmetic Actives exert melanogenesis-inhibiting properties superior to arbutin and kojic acid, while stimulating endogenous glutathione peroxidase in human keratinocytes.
Primary Synergies: Seamless compatibility with Le-Nutra GHK-Cu (Copper Tripeptide-1), Ectoine, Tranexamic Acid, and Hydrolyzed Oat Protein in anti-wrinkle serums and skin barrier creams.
Functional Foods & Instant RTD Beverages
A persistent impediment to olive extract utilization in liquid consumer products has been residual polyphenolic bitterness and precipitation. Le-Nutra’s proprietary De-bittered Water-Soluble Olive Leaf Fraction yields crystal-clear aqueous solutions at neutral pH (6.5–7.2) without clouding, sedimentation, or haze formation during 18-month ambient shelf life.
Primary Applications: Functional wellness shots, electrolyte hydration sticks, clean-label antioxidant teas, and longevity kombucha fermentations.
Clean-Label Animal Health & Veterinary Defense
With international restrictions mounting against prophylactic antibiotic growth promoters (AGPs), livestock and companion pet nutritionists require potent botanical antimicrobials. Olive leaf secoiridoids possess broad-spectrum bacteriostatic efficacy against enteric pathogens like Escherichia coli and Salmonella enterica without disturbing beneficial bifidobacteria.
Primary Applications: Premium extruded canine kibble top-coats, equine performance anti-stress powders, and poultry gut-integrity feed premixes.
China Factory 4.0: Supply Chain Resilience, Scalability & Efficiency Advantages
Inside Xi'an Le-Nutra’s 60,000 m² automated production infrastructure: delivering structural supply reliability and high batch uniformity to global brand owners.
Modern botanical sourcing requires moving beyond artisanal, fragmented batch farming toward unified, vertically coordinated manufacturing architectures. At Xi'an Le-Nutra Ingredients Inc., our manufacturing campus integrates Industry 4.0 automation, digital DCS (Distributed Control Systems), and automated SCADA batch logging across every phase of synthesis. Operating six multi-functional industrial production lines equipped with distinct extraction vessel designs (including continuous ultrasonic-assisted tanks, dynamic countercurrent percolation arrays, and industrial falling-film evaporators), we maintain an aggregate annual output exceeding 3,000 metric tons of standardized herbal powders and bioactive vegetal hydrolysates.
This automated capacity yields profound procurement advantages for Western and Asia-Pacific multinationals facing raw material volatility. Our localized supply chain capitalizes on China's massive agricultural infrastructure, combined with dedicated Olea europaea cultivation cooperatives located in favorable micro-climates across southern Shaanxi and Sichuan basins. These groves supply mature leaves harvestable during peak bioactive accumulation periods, ensuring uniform starting raw materials with natural Oleuropein baselines above 8% dry weight before extraction processing begins.
Automated Solvent Closed-Loops
Our distillation towers achieve 95%+ solvent recovery efficiency in vacuum closed loops. This prevents volatile VOC environmental emissions, dramatically compresses raw processing costs, and ensures residual ethanol remains consistently well below strict pharmacopeial limits (<500 ppm).
Full Process Traceability (LIMS)
Every lot is barcoded and digitally mapped across our Laboratory Information Management System (LIMS). From raw dry leaf moisture analysis upon receiving to HPLC chromatographic fingerprint archiving, data integrity is guaranteed for automated audit readiness.
Decoupled Geopolitical Buffer
By pairing massive warehousing storage with deep inventory reserves of raw leaves and standardized spray-dried bulk powders, Le-Nutra insulates contract formulation partners from seasonal price shocks, container shortages, and unpredictable botanical harvest shortfalls.
Global Regulatory Compliance, Pharmacopeial Monographs & Quality Assurance
De-risking foreign ingredient procurement with comprehensive batch dossiers, international audit qualifications, and stringent multi-residue screening.
For procurement directors, regulatory managers, and Quality Assurance (QA) auditors at tier-one nutrition and personal care conglomerates, raw material safety and documented authenticity are non-negotiable. Xi'an Le-Nutra’s quality ecosystem is anchored on total transparency, ensuring seamless compliance with the United States Pharmacopeia (USP), European Pharmacopoeia (Ph. Eur.), and Chinese Pharmacopoeia (ChP) monographs.
Under our quality release mandate, every production lot of Olive Leaf Extract is accompanied by an authoritative, ISO 17025 laboratory-validated Certificate of Analysis (COA), along with full Safety Data Sheets (SDS), technical product sheets, allergen disclosures, non-GMO statements, and non-irradiation guarantees. We actively support overseas customer audits and supply third-party test data validated through international laboratories such as Eurofins, SGS, and Pony Testing.
US FDA & GRAS Status
Formulated to comply with US Dietary Supplement Health and Education Act (DSHEA) parameters and Generally Recognized as Safe (GRAS) toxicological benchmarks for food integration.
EFSA Article 13.1 Health Claims
Our standardized Hydroxytyrosol fractions facilitate European brands qualifying for EFSA health claims concerning the protection of blood lipids from oxidative stress (5 mg daily claim).
Pesticides & PAH Screen
Every shipment is screened via LC-MS/MS for >500 pesticide residues to meet EU Regulation (EC) No 396/2005, plus Polycyclic Aromatic Hydrocarbons (Benzo[a]pyrene < 10 ppb).
EcoVadis & Kosher / Halal
Certified Kosher, Halal, ISO 9001, ISO 22000, and audited under EcoVadis Corporate Social Responsibility criteria for sustainable and ethical international manufacturing.
Global Enterprise Sourcing Demands & Strategic Procurement Frameworks
Addressing the critical criteria of enterprise volume buyers: multi-site risk mitigation, customized particle engineering, and supply contract certainty.
Custom Specification Engineering
Different production technologies require individualized physical traits. Le-Nutra provides tailor-made adjustments for particle mesh sizing (from 60-mesh direct-compression granules to 200-mesh ultra-micronized powders), bulk density matching, and custom moisture thresholds (<3.0%) for hygroscopic capsule fillings.
Export Logistics & DDP Solutions
With ongoing exports to 40+ countries across North America, the EU, Latin America, and Southeast Asia, our logistics team navigates complicated customs clearances, tariff codes (HS 1302.19), phytosanitary inspection certificates, and sea-freight/air-express cold-chain protections to guarantee rapid point-to-point transit.
Tier-1 Global Partnership Pedigree
Le-Nutra has built lasting raw material supplier partnerships with multinational pioneers in fine chemicals, clinical nutrition, pharmaceutical synthesis, and global cosmetic brands—including established interactions involving industry giants like BASF, DSM, 3SBio, Abbott, and Estée Lauder.
Comprehensive Question & Answer Guide for Procurement & Formulation Teams
Addressing core technical questions regarding chromatographic verification, stability profiles, bioavailability, and minimum order commercial structures.
Complementary Peptides, Vegetal Proteins & Botanical Extracts
Explore Le-Nutra’s diverse manufactured portfolio across botanical peptides, clean food coloring, hormonal balancing molecules, and hydrolyzed proteins.
Accelerate Your Olive Leaf Formulation Project
Partner directly with Xi'an Le-Nutra Ingredients Inc. Request technical dossiers, regulatory qualification packets, sample testing batches, or request direct wholesale contract pricing from our pharmaceutical-grade manufacturing facility.