Glossary
Lyophilization
A freeze-drying process that removes water from a peptide solution under low pressure, leaving a stable powder that can be stored at room temperature.
Also known as:
freeze-drying lyophilized
Lyophilization works by first freezing the peptide solution, then reducing surrounding pressure so the frozen water sublimates directly from ice to vapor — bypassing the liquid phase entirely. The result is a dry, porous cake or powder that retains the peptide’s molecular structure.
This process dramatically extends shelf life: lyophilized peptides are typically stable for months at room temperature or years when refrigerated, versus days or weeks for a peptide in solution. Before use, the powder must be reconstituted by adding bacteriostatic water.