High-performance liquid chromatographic separation of cobalamins

Area of Science:

• Biochemistry
• Analytical Chemistry
• Nutritional Science

Background:

• Cobalamins, essential vitamin B12 forms, play critical roles in human physiology.
• Accurate separation and characterization of different cobalamin forms are crucial for clinical and research applications.
• Existing methods may lack the sensitivity or resolution required for comprehensive cobalamin analysis.

Purpose of the Study:

• To develop and optimize a high-performance liquid chromatography (HPLC) method for separating physiological cobalamins.
• To determine optimal elution conditions for key cobalamin forms.
• To assess the method's capability in distinguishing cobalamin analogues from native forms.

Main Methods:

• Utilized high-performance liquid chromatography (HPLC) for cobalamin separation.
• Investigated and optimized elution conditions for methylcobalamin, adenosylcobalamin, hydroxycobalamin, and cyanocobalamin.
• Analyzed the separation of cobalamin analogues relative to physiological forms.

Main Results:

• Achieved excellent separation and resolution of the four primary physiological cobalamins using HPLC.
• Identified optimal conditions for the elution of each cobalamin form.
• Demonstrated the successful separation of several cobalamin analogues from their physiological counterparts.

Conclusions:

• HPLC is a highly effective technique for the precise separation of physiological cobalamins.
• The developed method offers rapid, sensitive, and reproducible characterization of cobalamins.
• This HPLC approach facilitates the differentiation of vitamin B12 forms and related analogues.