B2B procurement of freeze-dried raw materials should focus on five core indicators: nutrient retention, physical properties, microbiological safety, supply chain stability, and compliance certifications. Applicability should also be assessed based on specific application scenarios.
Nutrient and Ingredient Indicators：
* Vitamin Retention: The freeze-drying process should retain at least 90% of naturally occurring vitamins (such as vitamin C and beta-carotene). This can be verified through a third-party testing report.
* Moisture Content: Must be controlled below 5% to prevent clumping and mold during storage, which could affect shelf life.
* Contaminant Residue: Testing for heavy metals (such as lead and arsenic), pesticide residues, and total microbial counts ensures compliance with the importing country's food safety standards (such as EU EC 1881/2006).
* Minimum Order Quantity (MOQ): Negotiate MOQ based on production needs to avoid inventory backlogs or frequent batch changes that may cause quality fluctuations
