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BPC-157: This is a peptide celebrated for its proven tissue healing properties. Derived from a natural peptide in the human stomach, our formulation is designed for enhanced recovery in muscle, tendons, and ligaments____ ideal for athletes and those recuperating from injuries. Gut Health, with anti-inflammatory properties, BPC-157 becomes a potential ally against inflammatory conditions.
Peptide Storage
Best Practices For Storing Peptides
To preserve the integrity of laboratory results, proper storage of peptides is essential. Correct storage practices can maintain peptides for years and guard against contamination, oxidation, and degradation that may render your peptides, and therefore experiments, useless. While some peptides are more susceptible to degradation than others, knowing and implementing the best practices for peptide storage can greatly lengthen their stability and integrity regardless of composition.
Once peptides have been received, it is imperative that they are kept cold and away from light. If the peptides will be used immediately, or in the next several days, weeks or months, short-term refrigeration under 4C (39F) is generally acceptable. Lyophilized peptides are usually stable at room temperatures for several weeks or more, so if they will be utilized within weeks or months such storage is typically adequate.
However, for longer term storage (several months to years) it is more preferable to store peptides in a freezer at -80C (-112F). When storing peptides for months or even years, freezing is optimal in order to preserve the peptide’s stability.
Additionally, it is important to avoid repeated freeze-thaw cycles. This can increase the peptide’s susceptibility to degradation. Also, frost-free freezers should be avoided to store peptides, as temperatures can fluctuate widely during defrosting cycles.
Storing Peptides In Solution
The shelf life of peptide solutions is far less than that of lyophilized peptides, and peptides stored in solution are also vulnerable to bacterial degradation. Peptides containing Cys, Met, Trp, Asp, Gln, and N-terminal Glu in their sequences have especially short shelf lives when in solution.
Nevertheless, if peptides absolutely must be stored in solution, sterile buffers at pH 5-6 should be used, and the peptide solution should be separated into aliquots to avoid repeated freezing and thawing. Peptide solutions are generally stable for up to 30 days when refrigerated at 4C (39F), but those peptides with inherent instability should be kept frozen when not in use.
Peptide Storage Containers
Containers for peptide storage should be completely clean, clear, and structurally sound. They should also be chemically resistant and appropriately sized for the amount of peptide in them. Both glass and plastic vials are commonly used; plastic vials vary between those composed of polystyrene and those made of polypropylene. Polystyrene vials are generally clear but not chemically resistant; however, polypropylene vials are generally translucent but chemically resistant.
While high-quality glass vials offer all of the desirable characteristics for a peptide storage container, peptides are sometimes shipped in plastic vials in order to guard against breakage. Still, peptides can always be transferred from a plastic container to a glass container or vice versa, if necessary.
Peptide Storage Guidelines: General Tips
When storing peptides, remember to:
• Store peptide in a cold, dry, dark place
• Avoid repeated freezing and thawing of peptide
• Avoid overexposure to the air
• Avoid light exposure
• Avoid storing peptides in solution long term
• Aliquot peptide according to experimental requirements
Preventing Oxidation and Moisture Contamination
It is imperative to avoid contaminating peptides with both air and moisture. Moisture contamination is especially prone to occur when using a peptide immediately after withdrawing it from the freezer. To prevent uptake of moisture from the air on the cold surface of the peptide or on the inside of its container, allow the peptide to come to room temperature before opening.
It is also crucially important to minimize a peptide’s exposure to the air. A peptide’s container should therefore be kept closed as much as possible. After the required amount of peptide has been removed, resealing the container under an atmosphere of dry, inert gas (such as nitrogen or argon) will minimize the potential for the remaining peptide to become oxidized. Peptides with sequences C (cysteine), M (methionine), and W (tryptophan) are especially prone to air oxidation.
Because frequent thawing and refreezing as well as exposure to air can greatly reduce a peptide’s long-term stability, many researchers prefer to determine each experiment’s required amount of peptide and then aliquot this amount into separate vials as necessary. This is a highly useful preventative measure against peptide degradation.
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