Articles Accepted

BACKGROUND: Oyster shells are a type of biogenic materials with excellent characteristics in surface area, porosity, sorption capacity, and high concentration of CaCO3 (up to 90 wt%), and can be easily converted into a calcium-based alkali adsorbent. In Siddha medicine, Pearl Oyster Shells (Muthuchippi) are used to treat various ailments, including respiratory diseases, skin diseases, wound, musculoskeletal diseases, and digestive problems. Rich in calcium, magnesium, and bioactive compounds, promote holistic healing. AIM AND OBJECTIVE: This study is aimed to assess the topographic morphology and elemental composition of Muthuchippi parpam at various stages of processing. METHOD: The surface morphology and elemental composition were analyzed using FESEM, HRTEM, and EDS. RESULTS: FESEM analysis revealed significant reductions in particle size through the purification process, ultimately yielding nano-sized particles with irregular shapes and sheet-like appearances. HRTEM analysis further confirmed the nano-size range (94.1518 ± 10.54404 nm) and crystalline structure, while Selected Area Electron Diffraction (SAED) patterns indicated clear bright spots and distinct rings. EDS analysis identified a calcium-dominated composition (70.66-75.54 wt%) with substantial copper presence (24-28.81 wt%), minor zinc and selenium impurities, and absence of magnesium. CONCLUSION: These findings collectively demonstrate the successful transformation of Pearl oyster shell into a bioactive, nanostructured material – Muthuchippi parpam (Calcined Pearl Oyster Shell Powder), with enhanced therapeutic potential, underscoring the importance of advanced characterization techniques in optimizing traditional Siddha formulations.