Characterization and Therapeutic Potential of Marine-Derived Loligo duvauceli Ink Powder

Background

This research work focuses on the bioactive components of squid (Loligo duvauceli) ink, a naturally occurring marine fluid that is potentially defensive and has therapeutic qualities. This study investigates the phytochemical compounds, functional groups, and antibacterial activity of squid ink powder.

Materials and Methods

Squid ink was collected and processed from a fresh squid sample, and evaluated for phytochemical screening, UV-vis spectrophotometry, FTIR, GC-MS analysis, and antimicrobial assays.

Results

The existence of alkaloids, phenols, saponins, tannins, and flavonoids in a range of solvents was demonstrated by phytochemical analysis. Melanin and conjugated substances are characterized by a significant absorption between 200 and 400 nm in the UV-vis spectrum. Functional groups that are suggestive of bioactive compounds, such as hydroxyl, amine, carbonyl, and aromatic rings, were validated by FTIR analysis. Trimethyl phosphate was the main component of the chemicals found by GC-MS profiling, coupled with bioactive phenolic and quinonoid derivatives. There was a significant zone of inhibition against E. coli and S. aureus, which was evident in antibacterial tests.

Conclusion

The results highlight L. duvauceli ink's potential as a useful source of organic antioxidant and antibacterial compounds for application in pharmaceutical and nutraceutical formulations.