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<p>As the demand for alternative lipid sources intensifies globally, insect-derived oils offer an eco-efficient solution enriched with essential elements and functional compounds. The current study aims to investigate the eri silkworm (<i>Philosamia ricini</i>) pupal oil through inductively coupled plasma mass spectrometry (ICP-MS) for elemental profiling, Fourier transform infrared spectroscopy (FTIR) for functional group analysis, DPPH, ABTS, and MTT assays for biological evaluation. The results of the ICP-MS revealed the presence of the vital essential elements such as Fe, Zn, Cu, Mn, and Se, playing an important role in antioxidant properties and human metabolism. Further, FTIR confirmed the presence of major functional groups, which include C-H stretching vibrations and C = O stretching characteristic of lipid structures, supporting the oil’s PUFA-rich composition. The oil showed elevated antioxidant activity in free radical scavenging assays and was found to be non-toxic within biologically relevant concentrations in MTT cytotoxicity testing, indicating its safety for nutritional and therapeutic applications. These findings support the nutritional relevance and in vitro biological safety of eri pupal oil and reinforce its potential as a functional lipid source for food, nutraceutical, and cosmetic applications, warranting further in vivo investigation.</p> Graphical Abstract <p></p>

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Microwave-Assisted Digestion and ICP-MS-Based Multi-Elemental Analysis of Eri Pupal Oil: A Comprehensive Study with FTIR and In vitro Assessment for Bioassays

  • 期刊论文

  • 发表日期：

    2026年1月26日

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  • Akash Mishra,
  • Abhishek Verma,
  • Shreya Srivastava,
  • Venkatesh Kumar R.

摘要

As the demand for alternative lipid sources intensifies globally, insect-derived oils offer an eco-efficient solution enriched with essential elements and functional compounds. The current study aims to investigate the eri silkworm (Philosamia ricini) pupal oil through inductively coupled plasma mass spectrometry (ICP-MS) for elemental profiling, Fourier transform infrared spectroscopy (FTIR) for functional group analysis, DPPH, ABTS, and MTT assays for biological evaluation. The results of the ICP-MS revealed the presence of the vital essential elements such as Fe, Zn, Cu, Mn, and Se, playing an important role in antioxidant properties and human metabolism. Further, FTIR confirmed the presence of major functional groups, which include C-H stretching vibrations and C = O stretching characteristic of lipid structures, supporting the oil’s PUFA-rich composition. The oil showed elevated antioxidant activity in free radical scavenging assays and was found to be non-toxic within biologically relevant concentrations in MTT cytotoxicity testing, indicating its safety for nutritional and therapeutic applications. These findings support the nutritional relevance and in vitro biological safety of eri pupal oil and reinforce its potential as a functional lipid source for food, nutraceutical, and cosmetic applications, warranting further in vivo investigation.

Graphical Abstract