Rapid analysis of inositol phosphates.

Area of Science:

• Analytical Chemistry
• Food Science
• Biochemistry

Background:

• Inositol phosphates, including inositol hexakisphosphate, play crucial roles in biological systems.
• Accurate quantification of inositol phosphates in food and biological samples is essential for nutritional and health studies.
• Existing analytical methods can be time-consuming and complex, necessitating simpler alternatives.

Purpose of the Study:

• To develop and present fast and simple analytical methods for determining inositol bis- to hexakisphosphates and inositol hexakisphosphate.
• To improve upon the speed and simplicity of sample pretreatment and analytical detection compared to previous methods.
• To validate the efficiency and selectivity of the developed methods for food and feces matrices.

Main Methods:

• Sample pretreatment involved extraction and centrifugal ultrafiltration.
• Analysis was performed using high-performance ion chromatography (HPIC) with both gradient and isocratic elution.
• Detection of analytes was achieved through ultraviolet detection subsequent to postcolumn reaction.

Main Results:

• The developed methods are significantly faster and simpler than previously reported techniques.
• High-performance ion chromatography (HPIC) demonstrated high efficiency and selectivity for inositol phosphate analysis.
• Between-day and within-day variances for the HPIC method with gradient elution were generally below 8% and 5% (RSD), respectively.

Conclusions:

• The presented analytical methods provide a rapid and straightforward approach for inositol phosphate determination.
• HPIC is an effective and reliable technique for quantifying inositol phosphates in complex matrices like food and feces.
• These methods are suitable for routine analysis, facilitating research in nutrition and health related to inositol phosphates.