What Is Peptide Lyophilization?
Lyophilization, or freeze-drying, removes water from a frozen peptide solution by sublimation under vacuum. The resulting dry cake or powder is more chemically and physically stable during storage and transport than a peptide in solution, and is reconstituted with an appropriate solvent before laboratory use.
Published 2026-08-22 · Updated 2026-08-22 · Reviewed by the Lana editorial team
Why are peptides lyophilized?
Peptides in aqueous solution are susceptible to hydrolysis, oxidation, aggregation and microbial growth. Removing water substantially slows most of these degradation pathways.
What does the appearance tell you?
Cake appearance can vary with formulation and fill volume, and a visually small or partially collapsed cake is not by itself evidence of low content. Quantitative analysis is the appropriate way to establish how much peptide is present.