Speaker
Description
Laser-induced breakdown spectroscopy (LIBS) was employed to perform rapid multielemental analysis of sesame (Sesamum indicum L.) seeds, focusing on both nutritional and safety-relevant elements. Pressed sesame pellets were analyzed under optimized TEA CO2 laser conditions, while inductively coupled plasma–optical emission spectrometry (ICP–OES) measurements supported calibration and ensured reliable quantification, consistent with previously developed LIBS methodologies for plant-based matrices1. Major nutrients (K, P) and safety-relevant elements (Sr, Al) were quantitatively determined. Additional major and trace elements were also identified, providing a comprehensive elemental profile. The oil-rich, compact matrix contributed to stable plasma formation, enhancing signal reproducibility and analytical precision. These results demonstrate that LIBS offers a fast and practical approach for multielemental profiling of sesame seeds, supporting nutritional evaluation and food safety monitoring, and highlight its potential applicability to other oil-rich plant-based materials.
Keywords: laser-induced breakdown spectroscopy (LIBS); sesame; quantitative analysis; nutritional profiling; food safety; ICP–OES calibration; oil-rich matrix
Acknowledgments
The research was funded by the Ministry of Education, Science and Technological Development of the Republic of Serbia, Contract numbers: 451-03-33/2026-03/200017.
References:
1. Ranković, D.; Savić, M.; Stojiljković, M.; Ristić, M.; Luchkouski, V.V.; Đorđević, N.; Chumakov, A.N. Methodological Approach to LIBS Elemental Analysis and Plasma Characterization of Quinoa and Amaranth Pseudocereals Using a TEA CO₂ Laser. Foods 2025, 14, 4199. https://doi.org/10.3390/foods14244199