L-Threonine Storage Techniques

Proper storage of L-Threonine requires consideration of its chemical properties and stability to ensure its quality and activity remain unaffected. Below are some storage tips:

Ⅰ.Packaging Selection  

1. Keep in Original Sealed Packaging: If L-threonine is unopened, it should remain in its original packaging, which is typically designed to offer moisture resistance and oxidation protection. Packaging materials such as aluminum foil bags provide excellent barrier properties. Ensure that the zipper or seal is tightly closed.  

2. Transfer to an Appropriate Container: If the original packaging is opened or repackaging is necessary, transfer L-Threonine to an airtight glass or plastic container.  

  ·Glass containers are chemically stable and will not react with L-Threonine.  

  ·If using plastic containers, select high-quality, non-toxic, and airtight materials, such as high-density polyethylene (HDPE) containers.  

Ⅱ. Environmental Conditions  

1. Temperature:  

  ·L-Threonine should be stored in a cool environment, preferably at a temperature below 25°C.  

  ·High temperatures may lead to decomposition or deterioration, affecting its quality.  

  ·For long-term storage, it can be kept in a refrigerated environment (2-8°C); however, freezing should be avoided as it may alter its crystal structure or physical properties.  

2. Humidity:  

  ·L-Threonine is hygroscopic, meaning it absorbs moisture from the air.  

  ·The storage humidity should be kept below 60% to prevent clumping, mold growth, or degradation.  

  ·Silica gel desiccants can be placed inside the storage container to absorb any moisture that enters.  

3. Light Exposure:  

  ·Avoid direct sunlight and strong light exposure, as light may induce photochemical reactions, altering the structure and quality of L-Threonine.  

  ·Store in a dark place, such as inside a cabinet, or use dark-colored storage containers to minimize light exposure.  

Ⅲ.  Other Precautions  

1. Keep Away from Reactive Substances:  

  ·L-Threonine should not be stored near substances with strong odors, toxic properties, oxidizing or reducing agents, as these may cause contamination or chemical reactions.  

  ·Avoid storage near strong acids, strong bases, or strong oxidizers.  

2. Regular Inspections:  

  ·Even under optimal storage conditions, L-Threonine should be checked regularly for clumping, discoloration, or unusual odors.  

  ·If any abnormalities are detected, appropriate measures should be taken, and degraded L-Threonine should not be used.  

By following these storage guidelines, the quality and stability of L-Threonine can be effectively maintained over time.