Trigalacturonic acid is primarily used in research and development within the fields of biochemistry and plant biology. It serves as a substrate for studying the activity of enzymes like polygalacturonase and pectinase, which are involved in the breakdown of pectin in plant cell walls. This helps in understanding plant cell wall structure and degradation processes, which is crucial for improving food processing techniques, such as fruit juice extraction and clarification. Additionally, it is utilized in the development of biodegradable materials and biofuel production by exploring efficient ways to break down plant biomass. Its role in these applications highlights its importance in advancing sustainable industrial practices and agricultural innovations.