The gold standard of nature for cellular longevity and system-level protection
RejuEGT® is a high-purity natural L-Ergothioneine product independently developed and registered as a trademark by Shanghai Aidu Biotechnology. L-Ergothioneine, as a naturally occurring sulfur-containing amino acid derivative, has garnered widespread attention in recent years across fields such as healthy aging, cognitive health, sports nutrition, functional foods, and high-end skincare, owing to its outstanding antioxidant and cytoprotective capabilities.
Aidu Biotech employs a novel proprietary fermentation technology to produce high-purity L-Ergothioneine. Leveraging advanced bio-fermentation processes, the company ensures high product stability, consistency, and sustainable large-scale production, thereby meeting the demand for high-quality raw materials in the global dietary supplement, functional food, and cosmetics markets.
Multi-pathway Synthesis Technology: AIDU Biotech has mastered chemical (non-GMO), enzymatic, and fermentation synthesis technologies, boasting a production capacity of tens of tons, and is capable of flexibly adapting to the regulatory requirements of different countries worldwide.
Ultimate Quality Assurance: The product obtained through Aidu Biotech's process is a white powdery crystal, stable and non-hygroscopic, with excellent water solubility, and both purity and content reaching up to 99.5%.
Rigorous Safety Validation: The product is classified as practically non-toxic. According to the 90-day oral toxicity test, the No Observed Adverse Effect Level (NOAEL) exceeds 150 mg/kg BW/d.
RejuEGT® is a functional antioxidant ingredient recognized for its targeted cellular protective properties.In selected in vitro antioxidant assays, RejuEGT® has demonstrated significantly stronger free radical scavenging activity compared with Coenzyme Q10, Glutathione, and Vitamin C.
In addition, it has been extensively studied in the fields of mitochondrial health, neuroprotection, and cellular oxidative defense.
Supports mitochondrial integrity and cellular energy metabolism under oxidative stress conditions.
Helps protect neuronal cells from oxidative stress, supporting cognitive performance and healthy aging.
Supports cellular defense against UV-induced oxidative stress and related inflammatory signaling.
*Based on typical batch data for 99.5% grade
| Item | Specification | Test Method |
|---|---|---|
| Purity | 99.5%Min | HPLC |
| Assay | 99.% ~101% | HPLC |
| Loss on drying | 0.5% Max | USP |
| Melting Point | 270~271℃ | Melting Point detector |
| Optical Rotation | [α]D≥ (+)122°(c=1, H2O) | Polarimeter (c=1, H2O) |
| Heavy metals | 10ppm Max | USP |
| Pb | 0.1ppm Max | ICP-MS |
| As | 0.1ppm Max | ICP-MS |
| Hg | 0.1ppm Max | ICP-MS |
| Cd | 0.1ppm Max | ICP-MS |
| Ethanol residue | 300ppm Max | GC |
| Mesh | 100% pass rate for 50 mesh | Sieve |
| Total Plate Count | 100cfu/g Max | USP |
| Mold and yeast | 100cfu/g Max | USP |
RejuEGT® (L-Ergothioneine), with its outstanding stability and bioactivity, can synergize with a variety of functional ingredients to deliver targeted solutions for the following areas:
Certification Systems: GMP, Self-GRAS, FDA GRAS etc.
Clean Label: Non-GMO, Stable Batch Supply, Traceable Production
Global Supply: Supporting long-term stable supply and customized needs for the international market
U.S. Trademark & Commercial Compliance:
Official Trademark Registration: Protected under U.S. Trademark Serial No. 98568732 by Shanghai Aidu Biotechnology Co., Ltd.
Proven Commercialization: Successfully introduced and actively commercialized in U.S. commerce since March 26, 2025, offering verified batch consistency and regulatory peace of mind for global brand formulators.
Disclaimer: These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. For B2B commercial use only.
RejuEGT® L-Ergothioneine is CAS 497-30-3, supplied as a white to off-white powder at 99.5% minimum purity.
We have mastered chemical (non-GMO), enzymatic and fermentation routes, with tens of tons of capacity, so the route can be matched to the regulatory requirements of your target market.
Yes. The product is classified as practically non-toxic with a 90-day oral toxicity NOAEL above 150 mg/kg BW/d, and is supported by GMP, Self-GRAS and FDA GRAS documentation plus a batch-specific COA.
We ship from local U.S. inventory in Los Angeles, CA as well as from China. Send your target volume and application to idusc@aidubio.com for MOQ, pricing and samples.
Tell us the ingredient and volume you need. Our team will respond with pricing, lead time and documentation.
