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Agricultural industry

Expeller Pressing of Pumpkin Seed Oil: Unveiling the Potential of Bioactive Compounds

Strategic Insights

— 1 min read

Research conducted by the Brazilian Agricultural Research Corporation has shed light on the viability of extracting oil from pumpkin seeds using expeller pressing. The study, published in the Journal of the American Oil Chemists' Society, aimed to investigate the oil yield, quality, fatty acid profile, and bioactive compounds present in the oil obtained from pumpkin seeds. The research involved four superior lines of pumpkin seeds and a commercial sample, which were pressed using an expeller press with a maximum capacity of 3-5 kg/h. The results revealed a significant difference in seed oil content, oil yield after pressing, and cake residual oil content. Notably, the oil obtained from the pumpkin seeds was found to be rich in bioactive compounds, making it a promising source for various applications.

Key Takeaways:

  • The pumpkin seeds used in the study contained approximately 33% oil with a unique composition and nutritional value.
  • The oil obtained from the pumpkin seeds was rich in bioactive compounds, including tocochromanol and carotenoids.
  • The expeller pressing process yielded an oil with a high-quality fatty acid profile, with significant differences in seed oil content, oil yield after pressing, and cake residual oil content.
  • The study concluded that the process is feasible for obtaining oil rich in bioactive compounds.
  • The research was supported by Empresa Brasileira de Pesquisa Agropecuria.
  • The additional authors of the study include Sidney Pacheco, Allan Eduardo Wilhelm, Rosemar Antoniassi, Rita Mercia Estigarribia Borges, and Vanessa Nascimento Ribeiro.
  • The study aims to contribute to the development of new products and applications for pumpkin seed oil.

Statistics:

  • The pumpkin seeds contained approximately 3.34% (w/w) of oil.
  • The oil obtained from the pumpkin seeds contained approximately 33% oil with a unique composition and nutritional value.
  • The study used an expeller press with a maximum capacity of 3-5 kg/h.
  • The oil yield after pressing ranged from 13.6% to 26.2%.
  • The cake residual oil content ranged from 14.1% to 18%.
  • The study concluded that the process is feasible for obtaining an oil rich in bioactive compounds.

Sources:

  • Expeller Pressing of Pumpkin Seed Oil: Oil Yield, Quality, Fatty Acid Profile, and Bioactive Compounds. Journal of the American Oil Chemists' Society, 2025.
  • NewsRx. Recent Findings in Agriculture Described by Researchers from Brazilian Agricultural Research Corporation. Agriculture Week. October 16, 2025; p 410.

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