A measured portion of a solution divided from a larger volume. Peptides may be aliquoted into single-use portions to avoid repeated freeze-thaw cycles.
"Aliquot" is filed under Preparation in the PeptideAtlas glossary, alongside 12 other terms in that group.
1 other glossary entry refer to this term in their own definition, which is usually the fastest way to see how it is used in practice.
A cycle of freezing and thawing a substance, which can damage peptide structure through ice crystal formation and aggregation. Multiple freeze-thaw cycles significantly degrade peptides; aliquoting prevents this.
Sterile water containing 0.9% benzyl alcohol as a preservative. Used to reconstitute lyophilized peptides. Unlike sterile water, it inhibits bacterial growth and allows multi-dose use.
Water that has been sterilized and contains no preservatives. Unlike bacteriostatic water, it does not inhibit bacterial growth and should be used for single-dose preparations only.
The process of adding a solvent (usually bacteriostatic water) to a lyophilized peptide to create a liquid solution for use.
Terms that reference this one: Freeze-Thaw Cycle.
More Preparation terms: Bacteriostatic Water, Sterile Water, Reconstitution, Lyophilization, Lyophilized, Vial, Diluent, Excipient, Peptide Blend, Cold Chain, Mannitol, Enteric Coating.