Determination of cardamonin using a chemiluminescent flow-injection method

Area of Science:

• Analytical Chemistry
• Chemiluminescence Analysis
• Natural Product Quantification

Background:

• Cardamonin is a bioactive chalcone found in plants like Alpinia katsumadai Hayata.
• Accurate quantification of cardamonin is essential for its pharmacological and industrial applications.
• Existing analytical methods may lack the sensitivity or selectivity required for complex matrices.

Purpose of the Study:

• To develop a sensitive and selective flow injection chemiluminescence (CL) method for cardamonin determination.
• To investigate the enhancement effect of cardamonin on the CL reaction between cerium (IV) and rhodamine 6G.
• To apply the developed method for the analysis of cardamonin in Alpinia katsumadai Hayata samples.

Main Methods:

• A flow injection analysis system was utilized.
• Chemiluminescence was generated by the reaction of cerium (IV) and rhodamine 6G in a sulfuric acid medium.
• Cardamonin was quantified by measuring the enhancement of this chemiluminescence signal.

Main Results:

• The method demonstrated high sensitivity with a detection limit of 8.8 x 10(-9) g/mL for cardamonin.
• A wide linear range (1.0 x 10(-8) to 8.0 x 10(-6) g/mL) was achieved.
• Intraday and inter-day precision were below 2.5% relative standard deviation.
• The method was successfully applied to determine cardamonin in Alpinia katsumadai Hayata.

Conclusions:

• The developed flow injection chemiluminescence method is highly sensitive, selective, and accurate for cardamonin determination.
• This method offers advantages of speed, simplicity, and wide linear range.
• It provides a valuable tool for the analysis of cardamonin in natural products.