Spectrophotometric method for determining gibberellic acid in fermentation broths

Area of Science:

• Biochemistry
• Analytical Chemistry
• Fermentation Technology

Background:

• Accurate quantification of gibberellic acid is crucial for optimizing fermentation processes.
• Existing spectrophotometric methods for gibberellic acid analysis suffer from interferences and lack speed.
• Development of a robust and efficient analytical method is needed for industrial applications.

Purpose of the Study:

• To develop and validate a novel quantitative method for determining gibberellic acid in fermentation broths.
• To establish a method that is simple, reliable, and faster than current techniques.
• To overcome interferences common in existing spectrophotometric assays.

Main Methods:

• The novel method relies on the kinetic monitoring of the conversion reaction of gibberellic acid to gibberellenic acid.
• Quantitative analysis is performed by measuring the reaction rate, offering a kinetic-based approach.
• The method's performance was evaluated for sensitivity, accuracy, and reliability.

Main Results:

• The developed method demonstrates a threshold sensitivity of 0.1 g/l.
• Accuracy exceeds 97% for gibberellic acid concentrations between 0.1 and 1 g/l.
• The method is free from common interferences affecting spectrophotometric analyses, ensuring reliable results.

Conclusions:

• A novel, simple, and reliable kinetic method for gibberellic acid determination in fermentation broths has been successfully developed.
• This method offers significant advantages in speed and accuracy over existing techniques.
• The developed assay provides a valuable tool for the quantitative analysis of gibberellic acid in biotechnological applications.