Oxidation
Oxidation is a chemical degradation pathway affecting susceptible amino acid residues in peptides. Methionine is oxidized to methionine sulfoxide, cysteine to cystine (via disulfide formation) or cysteic acid, and tryptophan to various oxidized products.
Oxidation can occur during synthesis, storage, or handling — exposure to atmospheric oxygen, light, metal ions, or peroxide contaminants accelerates the process. Oxidized peptides often appear as additional peaks on HPLC chromatograms, reducing apparent purity.
Protection strategies include: storing under inert gas (nitrogen or argon), minimizing light exposure, using antioxidant-containing buffers, and maintaining cold storage temperatures.
All Healthy Aminos products are for research use only.
Related Products
Related Terms
Disulfide Bridge
A covalent bond formed between the sulfur atoms of two cysteine residues, creating structural cross-links that stabilize peptide conformation.
Shelf Life
The duration a peptide product maintains acceptable quality when stored under specified conditions.
Lyophilization
Freeze-drying — a dehydration process that removes water from a frozen peptide solution under vacuum, producing a stable dry powder.
Chromatogram
A graphical output from HPLC analysis showing UV absorbance vs retention time, where peaks represent different molecular species in the sample.
Research Use Only
FOR RESEARCH USE ONLY. Products sold by Healthy Aminos are intended strictly for in-vitro research and laboratory use. Not for human or animal consumption. Not FDA approved. By purchasing from Healthy Aminos, the buyer acknowledges that these products are not intended to diagnose, treat, cure, or prevent any disease. All products are sold as reference standards and research chemicals only.