Scientific Glossary

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Lyophilization sublimes water directly from ice to vapor under low pressure and temperature. The result is a porous, dry "cake" or powder that retains the compound's structure and bioactivity. Most research peptides are lyophilized for stability — they can be stored as powder at refrigerator or freezer temperatures for extended periods (months to years). Reconstitution is required before use by adding an appropriate aqueous vehicle (bacteriostatic water, sterile water). Lyophilized peptides are sensitive to moisture, heat, and UV light.