Aim: The present study focuses on the extraction of astaxanthin, a potential natural antioxidant and carotenoid from the shells of Metapenaeus dobsoni which is a species of shrimp, followed by incorporation into a tropical sunscreen lotion. Materials and Methods: Astaxanthin was extracted using an optimized solvent extraction method and its solvent assisted extraction. The presence of Astaxanthin is analyzed by using the FTIR spectrometer, Thin layer chromatography, UV-visible spectrophotometer were the various test which have been used for testing the presence of astaxanthin in the shrimp shells. The purified extract was incorporated into a tropical sunscreen formulation and the product was evaluated for the key physiochemical properties like pH, viscosity, spreadabilty and washability. The confirmatory test for astaxanthin was done using Sulphuric acid test, Iodine test, Bromine water test and antioxidant acticity with DPPH assay, UV production with UV-A and UV-B rays, antimicrobial activity, Vitamin C activity, Thin layer chromatography, FTIR analysis were determined, and the sunscreen was formulated. Results: It indicated that the sample was rich in antioxidant property and helps in exhibiting UV absorbing capacity and it is favorable in demonstrating its potential as a natural and ecofriendly alternative to synthetic UV filters. Conclusion: This study supports the potential of marine derived astaxanthin as a sustainable, natural UV protective agent in cosmetic formulation. It highlights the value-added utilization of shrimp shell waste in the development of sustainable skincare products.
