Long-spined sea urchin
Diadema setosum
crystal structures

How to Cite

Doğdu, S. A., Turan, C., Depci, T., Bahçeci, E., & Turan, F. (2023). CHARACTERIZATION OF LONG-SPINED SEA URCHIN DIADEMA SETOSUM SHELL AND POTENTIAL USAGE AREAS. Pakistan Journal of Marine Sciences, 32(1), 83–88. Retrieved from


The long-spined sea urchin Diadema setosum (Leske, 1778) is the most common seashore sea urchin in the tropical Indo-Pacific and also this species is distributed in the eastern Mediterranean Sea. In this study, we characterize the shell of the long-spined sea urchin Diadema setosum using FTIR and XRD analyses. The powdered shell of D. setosum was analyzed by Fourier transform infrared spectrometry. It was determined that 714 cm-1 and 871 cm-1 peaks from the formed peaks determined the amorphous and crystal structure, respectively. The results of the XRD analysis of the long spiny sea urchin shell overlap 91% with calcite with chemical formula Ca5MgC6O18 and 9% with periclase chemical formula Mg4O4. Analysis results show that D. setosum shell was found to be in calcite structure, and can be used in many areas such as paper, paint, plastic, construction, food, ceramics, and pharmaceuticals. When combined with other studies as antibacterial, anti-inflammatory, antimicrobial, and antioxidant, it has been revealed to contain amorphous and crystal structures that are useful for different biomedical industries. High availability and accessibility of the long-spined sea urchin, can become a very economical product for these sectors, and in this way, an invasive species will be brought into the economy.



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Copyright (c) 2023 Servet Ahmet Doğdu, Cemal Turan, Tolga Depci, Ersin Bahçeci, Funda Turan