CAS Number: 61-90-5
Source & Form: Fermentation-derived essential branched-chain amino acid (BCAA); white crystalline powder
Applications: Sports nutrition, muscle building, recovery, medical nutrition, aging support
Advantages:
What is L-Leucine?
L-Leucine is one of the three branched-chain amino acids (BCAAs) and is considered the most potent in stimulating muscle protein synthesis. It activates the mTOR pathway, a key regulator of cell growth and anabolic processes, making it essential for muscle growth, recovery, and maintenance. L-Leucine also supports blood sugar regulation, wound healing, and the production of growth hormones.
Because the body cannot synthesize leucine, it must be obtained through diet or supplementation. Our L-Leucine is 100% pure, vegan, and produced via non-GMO microbial fermentation, ideal for both sports performance and clinical use.
Key Benefits:
✅ Maximizes muscle growth and retention (especially during calorie deficits)
✅ Activates mTOR for anabolic signaling
✅ Supports post-exercise recovery and reduces muscle breakdown
✅ Essential for elderly nutrition and sarcopenia management
✅ Non-GMO, allergen-free, and easy to blend into formulas
Applications:
FAQs:
Q: What makes L-Leucine different from other BCAAs?
A: It’s the key driver of muscle protein synthesis and is more anabolic than isoleucine or valine.
Q: Can it be taken alone?
A: Yes, but for full BCAA benefits, it’s often combined with isoleucine and valine.
Q: Is it safe for long-term use?
A: Yes, when used in appropriate dosages as part of a balanced amino acid regimen.
Q: Is it vegan-friendly?
A: Yes, our L-Leucine is produced via plant-based fermentation and contains no animal-derived ingredients.

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Anrui Biotechnology Co., Ltd. is a specialized exporter of high-quality food ingredients and additives. We focus on global trade and custom formulation services for functional ingredients, delivering consistent, compliant, and premium-quality supply solutions to our worldwide clients.
Headquartered in Guangzhou, China, Anrui collaborates with GMP-certified manufacturing partners equipped with advanced testing facilities, including HPLC, UV-VIS spectrophotometry, and microbiological analysis, ensuring every batch meets strict international quality and regulatory standards.
Our products are exported to over 60 countries, serving industries such as food, beverages, supplements, and cosmetics.
Fast-moving ingredients for food factories, ready for immediate dispatch.