High-Efficiency, Matrix Interference-Free, General Applicable Probes for Bile Acids Extraction and Detection

Area of Science:

• Analytical Chemistry
• Biochemistry
• Materials Science

Background:

• Bile acids (BAs) are crucial biomarkers for endocrine diseases.
• Accurate identification and quantification of BAs are challenging due to their diversity and concentration range.

Purpose of the Study:

• To develop a selective and efficient probe for bile acid extraction.
• To improve the detection and profiling of bile acids in complex samples.

Main Methods:

• Fabrication of a β-cyclodextrin (β-CD) based copolymer probe via in-mold photopolymerization.
• Application of the probe for solid-phase microextraction coupled with HPLC-MS/MS analysis.

Main Results:

• The β-CD copolymer probe demonstrated superior selective extraction capacity for bile acids.
• The probe exhibited consistent extraction performance under various interfering conditions (pH, complex matrix).
• Low limits of detection (<0.075 ng mL⁻¹) were achieved for bile acid analysis.

Conclusions:

• The developed β-CD probe offers a promising tool for enhanced bile acid detection and profiling.
• Stereochemistry of bile acids is key for selective complex formation and extraction.
• This advancement has significant implications for clinical diagnosis and analytical chemistry.