Quick answer
L-carnitine and coenzyme Q10 are mostly made by fermentation, sometimes with synthesis, so documents focus on strain and medium. Prepare strain name and number, full medium composition including nitrogen, peptone and antifoam origins, extraction solvents such as ethanol with residual notes, finished specs and a halal certificate. Shenzhen brands buying through traders must trace to the actual maker; aids across fermentation, extraction and refining are listed one by one.
Detailed explanation
Three document faces
- Strain: scientific name, number, source and safety basis
- Medium: carbon and nitrogen sources, peptones, oils, antifoam origins
- Refining: solvents, crystallization and filter aids with residue data
File list
- Process outline and flow diagram
- Medium-component origin statements
- Solvent specifications and residual test reports
- Manufacturer halal certificate covering the shipped grade
Trader purchasing caution
Certificates are usually held by the manufacturer, and grade and batch information can break when goods pass through traders. Require authorization and traceability documents; a trader-letterhead statement alone is not accepted.
Alternative routes
If fermentation evidence is hard, evaluate synthetic grades produced without animal-derived aids; let the supplier's measured and process documents guide the choice rather than assumptions from a trade name.
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