As a premier bio-fermentation raw material manufacturer, we provide commercial-scale cosmetics, nutricosmetics, and pharmaceutical brands with pure, highly stable L-Ergothioneine (EGT ≥ 98% / 99%), directly solving regulatory compliance barriers, batch-to-batch inconsistency, and formulation color-degradation challenges.

Factory Grade Code	Active Specification (HPLC Assayed)	Physical & Processing Characteristics	Optimal Formulating Suitability
EGT-PURE-99	L-Ergothioneine Crystalline Powder ≥ 99.0%	White crystalline powder, odor-free, 100% water soluble	High-end skincare anti-aging serums, premium oral nutricosmetic capsules, and sublingual tablets.
EGT-COS-10	L-Ergothioneine Liquid Solution 0.5% / 1.0% / 2.0%	Clear, colorless, transparent liquid, easy cold-processing	Direct addition into cosmetic lotions, essences, facial masks, and toner formulations without pre-dissolving.
EGT-MIX-05	L-Ergothioneine Premixed Powder 0.1% - 1.0%	Off-white dry premix powder (Maltodextrin/Mannitol carrier)	Functional food premixes, sachet drinks, solid beverage formulations, and dietary gummies.

Quality Parameter	Factory Specification Limits	Analytical Method & Compliance
ACTIVE PURITY & STEREOCHEMISTRY
L-Ergothioneine Assay (Pure Powder)	≥ 98.0% / ≥ 99.0% (Dry Basis)	HPLC Method. Confirms stereospecific L-isomer structure and eliminates inactive related impurities.
Loss on Drying / Moisture Content	≤ 1.0%	Karl Fischer / Vacuum Drying. Low moisture prevents powder caking and preserves crystalline integrity.
SAFETY & CONTAMINANT CONTROLS
Heavy Metals & Residual Solvents	Pb ≤ 0.5 ppm | As ≤ 0.5 ppm | Cd ≤ 0.1 ppm | Solvent Free	ICP-MS & GC-Headspace. Fully compliant with EU Cosmetics Regulation (EC 1223/2009) & US California Prop 65.
Microbiological Compliance	Total Plate Count ≤ 100 cfu/g | Yeast & Mold ≤ 10 cfu/g | Pathogens: Negative	USP/EP Microbial Enumeration Tests. Sterile packaging ideal for high-end skincare serums.

OEM Track 1: Anti-Aging Serums, Essences & Eye Creams

Recommended usage rate: 0.1% – 1.0% active concentration. Dissolves instantly in water to form a crystal-clear solution without altering formulation viscosity or color.

Direct Factory Advantage: We offer EGT-COS-10 (1% Liquid Solution) to simplify production lines and eliminate pre-dissolving steps for cosmetic factories.

OEM Track 2: Oral Anti-Aging Capsules & Sublingual Tablets

Recommended daily dosage: 5mg – 30mg per serving. Pure crystalline powder features excellent flowability for automated encapsulation without capping issues.

Direct Factory Advantage: Batch-to-batch density control guarantees consistent filling weight across high-speed encapsulation equipment.

OEM Track 3: Functional Longevity Drinks & Oral Collagen Liquids

Resists thermal degradation during high-temperature short-time (HTST) pasteurization or retort processing, making it optimal for functional liquid shots.

Direct Factory Advantage: Clean taste profile ensures zero bitter or metallic aftertaste in oral liquid formulations.

Case Study 1: Overcoming Regulatory Bottlenecks for a US Luxury Skincare Brand

Client Pain Point: A cosmetic manufacturer in California struggled to import synthetic EGT raw material due to strict FDA heavy metal and solvent residue audit rejections.

Manufacturer Solution: We supplied our bio-fermented EGT-PURE-99 along with a complete US FDA NDI safety dossier, heavy metal ICP-MS reports, and non-GMO certification.

✓ Commercial Outcome: Successfully passed US Customs, leading to an annual contract of 50 kg high-purity EGT for their flagship serum line.

Case Study 2: Reducing Cost & Micro-Dosing Errors for a European Supplement Brand

Client Pain Point: A dietary supplement brand in France faced significant active weight variation when blending pure 99% EGT powder in tiny 5mg capsule dosages.

Manufacturer Solution: We engineered a customized EGT-MIX-05 (0.5% active premix) dry powder with uniform granule size matching their carrier matrix.

✓ Commercial Outcome: Reduced dosage deviation to under 1.5% and cut client R&D mixing costs by 35%.

Standard Export Packaging (Pilot & Bulk Quantities)

High-purity EGT powder is packed in light-shielded, double vacuum-sealed aluminum foil bags (100g, 1kg, 5kg, or 25kg fiber drums). Liquid formulations are packed in food/cosmetic-grade 1kg, 5kg, or 25kg HDPE drums with nitrogen head-space flushing.

Warehouse Storage & Active Stability Guidelines

Store pure powder sealed in original containers at 2°C–8°C (refrigerated) or cool room temperature (≤ 20°C), protected from light and moisture. Shelf life is guaranteed for 24 months with zero purity drop under recommended conditions.

Streamlined Export Compliance & Documentation

Every batch is dispatched with complete technical documentation: Certificate of Analysis (COA), HPLC Chromatogram, Heavy Metal ICP-MS report, Solvent Residue GC report, MSDS, Safety Data Sheet, and Non-Animal Origin Declaration.

Q1: What are the main production methods for L-Ergothioneine, and why is bio-fermentation preferred?

EGT is produced via chemical synthesis, mushroom extraction, or bio-fermentation. Mushroom extraction suffers from low yields and high prices, while chemical synthesis leaves toxic solvent residues and non-natural D-isomers. Our precision bio-fermentation utilizes non-GMO fungal strains to yield 100% pure L-stereoisomer Ergothioneine, ensuring full biological activity, high safety, and worldwide regulatory compliance.

Q2: How does L-Ergothioneine perform in terms of thermal, light, and pH stability in cosmetic formulas?

Unlike conventional antioxidants like Vitamin C or Glutathione, L-Ergothioneine possesses a unique thione-thiol tautomeric structure. It remains highly stable across a wide pH range (3.0 to 9.0) and tolerates heating up to 80°C during formulation emulsification without degrading, oxidizing, or causing product browning.

Q3: How do you verify active EGT purity and distinguish it from structural isomers?

We utilize High-Performance Liquid Chromatography (HPLC) coupled with Mass Spectrometry (LC-MS) and Nuclear Magnetic Resonance (NMR) spectroscopy. This rigorous testing verifies the exact molecular weight (229.30 g/mol), quantifies active purity (≥ 99.0%), and confirms the stereospecific L-isomer configuration for every batch.

Q4: What is the recommended dosage of L-Ergothioneine in skincare and oral supplement formulations?

In cosmetic serums and creams, the effective recommended concentration ranges from 0.1% to 1.0% (or 0.005%–0.05% pure EGT equivalent). For oral dietary supplements, typical daily dosages range from 5 mg to 30 mg per serving depending on target health claims and regional regulatory limits.

Q5: What are your factory's MOQ, sample policy, and typical export delivery times?

Our standard MOQ for pure 99% EGT powder is 100g. For R&D formulation trial runs, we provide 1g to 10g high-purity pilot sample kits upon request. Standard stock items ship via express air freight (DHL/FedEx) within 2-4 business days with complete COA documentation.

Q6: Does your factory support custom liquid solutions or pre-blended premixes for B2B clients?

Yes, as a primary manufacturer, we provide custom OEM options including 0.5%–2.0% stabilized aqueous solutions for cosmetic factories, as well as customized dry powder premixes (e.g., EGT + Hyaluronic Acid + Collagen) to simplify your manufacturing process and lower R&D overhead.