Abstract
Pistachio (Pistacia vera L.) oil has important nutritional and therapeutic properties because of its high concentration of essential fatty acids. The extraction method used to obtain natural compounds from raw material is critical for product quality, in particular to protect nutritional value. This study compared the fatty acid composition of pistachio oil extracted by two conventional procedures, Soxhlet extraction and maceration, analyzed by a gas chromatography-flame ionization detector (GC-FID). Four solvents with different polarities were tested: n-hexane (Hx), dichloromethane (DCM), ethyl acetate (EtAc) and ethanol (EtOH). The highest unsaturated fatty acid content (88.493 %) was obtained by Soxhlet extraction with EtAc. The Soxhlet method extracted the most oleic and linolenic acids (51.99 % and 0.385 %, respectively) although a higher concentration (36.32 %) of linoleic acid was extracted by maceration.
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Acknowledgments
The authors wish to thank the Food and Drug Administration of Semnan University of Medical Sciences for financial support and the quality control laboratory of Semnan University of Medical Sciences for helping and providing laboratory facilities for conducting the experiment.
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Abdolshahi, A., Majd, M.H., Rad, J.S. et al. Choice of solvent extraction technique affects fatty acid composition of pistachio (Pistacia vera L.) oil. J Food Sci Technol 52, 2422–2427 (2015). https://doi.org/10.1007/s13197-013-1183-8
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DOI: https://doi.org/10.1007/s13197-013-1183-8