Biosensors for D-Amino Acids: Detection Methods and Applications.

Area of Science:

• Biochemistry
• Analytical Chemistry
• Biotechnology

Background:

• D-enantiomers of amino acids (D-AAs) were historically undervalued due to low natural abundance and detection challenges.
• Advancements in analytical techniques (GC, HPLC, CE) enabled D-AA detection but remain time-consuming and unsuitable for real-time applications.
• Life sciences and industry demand rapid, selective D-AA determination, a need met by biosensor technology.

Purpose of the Study:

• To provide an updated review on biosensors for detecting and quantifying D-AAs.
• To discuss the applications of D-AA biosensors in food safety, quality, human health, and neurological research.
• To identify key challenges and future directions in D-AA biosensor development.

Main Methods:

• Review of current literature on D-amino acid biosensors.
• Analysis of existing analytical methods for D-AA detection.
• Discussion of challenges including selectivity, simultaneous L-/D-AA assay, and device development.

Main Results:

• Biosensors provide a rapid and selective alternative to traditional analytical methods for D-AA detection.
• Current research focuses on overcoming challenges such as distinguishing between D-AAs and simultaneous L-/D-AA detection.
• Development of implantable and surface-scanning biosensors is progressing.

Conclusions:

• Biosensors are essential tools for the accurate and efficient determination of D-AAs.
• Addressing challenges in selectivity and simultaneous detection will advance D-AA research.
• Future biosensor innovations will accelerate the investigation of D-AAs' neurological roles.