Peptide Storage Guidelines
Detailed temperature, humidity, and handling guidelines for short-term and long-term storage of research peptides in the laboratory.
Scientific background / literature overview only. Discussion of published research does not describe the intended use of Novex Peptide products.
Introduction
Proper storage is critical for maintaining the chemical integrity and biological activity of research peptides. Incorrect storage conditions can lead to degradation, oxidation, aggregation, or loss of potency — all of which compromise experimental results.
Temperature Guidelines
Long-Term Storage (1+ years)
Store lyophilised peptides at -20°C or below. For peptides containing oxidation-sensitive residues (methionine, cysteine, tryptophan), -80°C is recommended.
Short-Term Storage (days to weeks)
Lyophilised peptides can be stored at 2-8°C for short periods without significant degradation, provided they are sealed and protected from moisture.
Reconstituted Peptides
Once reconstituted, peptides are far less stable. Use immediately or aliquot and store at -20°C. Avoid repeated freeze-thaw cycles, which accelerate degradation.
Moisture and Humidity
Lyophilised peptides are hygroscopic. Moisture uptake can cause hydrolysis and aggregation. Always store vials sealed with the original septum, and use desiccant in storage containers where possible.
Light Sensitivity
Some peptides are photosensitive, particularly those containing aromatic residues (tryptophan, tyrosine, phenylalanine). Store in amber vials or wrap containers in foil. Minimise exposure to direct laboratory lighting.
Oxidation Prevention
Peptides containing cysteine or methionine residues are prone to oxidation. For long-term storage, consider flushing the vial headspace with nitrogen or argon before sealing.
Handling Best Practices
Research Limitations
These storage guidelines are provided for laboratory research use only. They do not constitute storage guidance for any clinical or therapeutic application.
References
- 1.Bhatnagar BS, et al. Stability and Drying of Proteins. Pharm Res. 2007;24(4):715-727.
- 2.Carpenter JF, et al. Rational Design of Stable Lyophilized Protein Formulations. Biochemistry. 2002;41(15):4613-4620.
- 3.Roy S, et al. Light-Induced Degradation of Peptides. J Pharm Sci. 2009;98(9):3186-3199.
Research use only. This article is for educational purposes only and does not constitute advice for any application involving human use. No medical claims are made.