Peptide Reconstitution and Storage – UK Research Peptides
Proper reconstitution and storage of research peptides is essential to maintain purity, stability, and experimental reliability. All instructions provided here are intended for laboratory and in vitro research purposes only. These guidelines are not for human or animal administration.
Reconstituting Research Peptides
Research peptides are typically supplied as lyophilized (freeze-dried) powders, which must be carefully reconstituted before use. Follow these steps to ensure peptide stability and experimental reproducibility:
1. Choose the Appropriate Solvent
Common solvents for peptide reconstitution include:
Bacteriostatic or sterile water – suitable for most peptides.
Acetic acid (0.1%) or 10% ethanol – for hydrophobic peptides.
DMSO – only for peptides that are poorly soluble in water.
Always refer to the Certificate of Analysis (CoA) for solvent compatibility.
2. Determine the Desired Concentration
3. Gentle Mixing
Add solvent slowly along the vial wall to avoid foaming or peptide denaturation.
Mix by gentle swirling or tapping, not vortexing.
4. Aliquoting
Divide reconstituted peptide into small aliquots to avoid repeated freeze-thaw cycles.
Use sterile microcentrifuge tubes for each aliquot.
Storing Reconstituted Peptides
Proper storage is critical to maintain peptide integrity and experimental reproducibility:
Short-term storage: 2–8 °C for up to 1–2 weeks.
Long-term storage: –20 °C or –80 °C, ideally as aliquots.
Avoid repeated freeze-thaw cycles – thaw only the aliquot you plan to use.
Protect from light and moisture to prevent degradation
Tips for Laboratory Best Practice
Always work in a sterile environment when handling peptides.
Use filtered pipette tips to prevent contamination.
Label aliquots with peptide name, concentration, and reconstitution date.
Verify solubility and stability information on the CoA or datasheet before experiments