Al-Qadisiyah Journal For Agriculture Sciences

Efficiency of The Extraction Method for the Extracted Oil From the Local Pumpkin and Their Physiochemical Properties

Document Type : Research Paper

Authors

Sheraz Zuher Karem
Darwin Hawar Mohammed

Food Technology Department, Agricultural Engineering Sciences College, University of Salahaddin, Erbil, Kurdistan Region, Iraq.

https://doi.org/10.33794/qjas.2025.156603.1195
Abstract
Examining the oil output and the physiochemical effects of various extraction methods on pumpkin seeds was the primary goal of the research. We used n-hexan as a solvent in two separate oil extraction processes, cold press extraction (CPE) and soxhlet extraction (SE), and we choose pumpkin seeds for the job. In terms of oil yield, the SE technique achieved 64.07%, while the CPE approach came in at 36.33%. The physicochemical characteristics of the seed oils were discovered to be substantially affected by the oil extraction process, species, and the interaction between the two. Acidity, iodine, peroxide, saponification, density, refractive index, and viscosity were some of the physiochemical parameters measured for pumpkin oil. In terms of chemical tests, the Soxhlet extraction method outperformed CPE by 125, 3.02, and 1.03 iodine values, peroxide values, and acid values, respectively. On the other hand, CPE had a higher saponification number at 187.13, and SE had a lower one at 187.13. In terms of physical tests, the SE method outperformed CPE by 1.47, 0.916, and 76.4 viscosity, respectively. Both the oil yield and its physiochemical qualities were improved by the soxhlet extraction process, according to the results. 

Keywords

cold press extraction
soxhlet extraction
physical properties
chemical properties
Subjects
  1. Hussain, A., Kausar, T., Sehar, S., Sarwar, A., Ashraf, A. H., Jamil, M. A., ... & Majeed, M. A. (2022). A Comprehensive review of functional ingredients, especially bioactive compounds present in pumpkin peel, flesh and seeds, and their health benefits. Food Chemistry Advances, 1, 100067. org/10.1016/j.focha.2022.100067
  2. Habib, A., Biswas, S., Siddique, A. H., Manirujjaman, M., Uddin, B., Hasan, S., ... & Asaduzzaman, M. (2015). Nutritional and lipid composition analysis of pumpkin seed (Cucurbita maxima Linn.). J Nutr Food Sci, 5(4), 374. DOI 10.4172/2155-9600.1000374
  3. Kulczyński, B., & Gramza-Michałowska, A. (2019). The profile of carotenoids and other bioactive molecules in various pumpkin fruits (Cucurbita maxima Duchesne) cultivars. Molecules, 24(18), 3212. https://doi.org/10.3390/molecules24183212
  4. Šamec, D., Loizzo, M. R., Gortzi, O., Çankaya, İ. T., Tundis, R., Suntar, İ., ... & Nabavi, S. M. (2022). The potential of pumpkin seed oil as a functional food—A comprehensive review of chemical composition, health benefits, and safety. Comprehensive reviews in food science and food safety, 21(5), 4422-4446. https://doi.org/10.1111/1541-4337.13013
  5. Dragoun, M., Klausová, K., Šimicová, P., Honzíková, T., Stejskal, J., Navrátilová, K., ... & Kyselka, J. (2022). Formation of previously undescribed δ7-phytosterol oxidation products and tocopherylquinone adducts in pumpkin seed oil during roasting, screw-pressing, and simulated culinary processing at elevated temperatures. Journal of Agricultural and Food Chemistry, 70(37), 11689-11703. https://pubs.acs.org/doi/10.1021/acs.jafc.2c03292?goto=supporting-info
  6. Rezig, L., Chouaibi, M., Msaada, K., & Hamdi, S. (2012). Chemical composition and profile characterisation of pumpkin (Cucurbita maxima) seed oil. Industrial Crops and Products, 37(1), 82-87. https://doi.org/10.1016/j.indcrop.2011.12.004
  7. Xiang, C., Xu, Z., Liu, J., Li, T., Yang, Z., & Ding, C. (2017). Quality, composition, and antioxidant activity of virgin olive oil from introduced varieties at Liangshan. LWT, 78, 226-234. https://doi.org/10.1016/j.lwt.2016.12.029
  8. Aremu, M. O., Ibrahim, H. and Bamidele, T. O. (2015). Physicochemical characteristics of the oils extracted from some Nigerian plant foods: A review. Chemical and Process Engineering Research, 32, 36 – 52. https://doi.org/10.3923/jas.2007.835.840
  9. Siano, F., Straccia, M. C., Paolucci, M., Fasulo, G., Boscaino, F. and Volpe, M. G. (2016). Physico-chemical properties and fatty acid composition of pomegranate, cherry and pumpkin seed oils. J. Sci. Food Agric., 96, 1730–1735. http://dx.doi.org/10.1002/jsfa.7279
  10. AOAC (Association of Official Analytical Chemists). (2000). Official Methods of Analysis (17th ed.). AOAC International.
  11. Babagana, G., Bamidele, S. S. and Idris, M. B. (2011). Characterization and Composition of Balanites aegyptiaca seed oil and its potential as biodiesel feed stock in Nigeria. J. of Applied Phytotech. in Envtal Sanitation, 1, 29–35. https://doi.org/10.5012/jkcs.2011.55.4.680
  12. Basuny, M. M., Arafat, M. and Ahmed, A. A. (2012). Vacuum frying: An alternative to obtain high quality potato chips and fried oil. Banats. J. Biotechnol., 3, 22–30. http://dx.doi.org/10.1007/s12393-011-9037-5
  13. AOAC (Association of Official Analytical Chemists). (2005). Official Methods of Analysis (18th ed.). AOAC International.
  14. Emil, A., Yaakob, Z., Satheesh Kumar, M.N., Jahim, J.M. & Salimon, J. (2010) Comparative evaluation of physicochemical properties of jatropha seed oil from Malaysia, Indonesia and Thailand. Journal of the American Oil Chemists' Society. 87 (6). 689-695. http://dx.doi.org/10.1007/s11746-009-1537-6
  15. Chouaibi, M., Rezig, L., Hamdi, S., & Ferrari, G. (2019). Chemical characteristics and compositions of red pepper seed oils extracted by different methods. Industrial Crops and Products, 128, 363–370. http://dx.doi.org/10.1016/j.indcrop.2018.11.030
  16. Seymen, M., Uslu, N., Turkmen, O., Al Juhaimi, F., & Ozcan, M. M. (2016). Chemical compositions and mineral contents of some hull-less pumpkin seed and oils. Journal of the Americal Oil Chemists Society, 93, 1095–1099. http://dx.doi.org/10.1007/s11746-016-2850-5
  17. Ozcan, M. M., Ghafoor, K., Al Juhaimi, F., Ahmed, I. A. M., & Babiker, E. E. (2019). Effect of cold-press and soxhlet extraction on fatty acids, tocopherols and sterol contents of the Moringa seed oils. South African Journal of Botany, 124, 333–337. https://doi.org/10.1016/j.sajb.2019.05.010
  18. Ahmed, I. A. M., Al- Juhaimi, F. Y., Ozcan, M. M., Osman, M. A., Gassem, M. A., & Salih, H. A. A. (2019). Effects of cold- press and soxhlet extraction systems on antioxidant activity, total phenol content, fatty acids and tocopherol content of walnut kernel oils. Journal of Oleo Science, 68, 167–173. https://doi.org/10.5650/jos.ess18141
  19. Haile, M., Duguma, H. T., Chameno, G., & Kuyu, C. G. (2019). Effects of location and extraction solvent on physico chemical properties of Moringa stenopetala seed oil. Heliyon, 5(11). https://doi.org/10.1016/j.heliyon.2019.e02781
  20. Jafari, M., Goli, S. A. H., & Rahimmalek, M. (2012). The chemical composition of the seeds of Iranian pumpkin cultivars and physicochemical characteristics of the oil extract. European Journal of Lipid Science and Technology, 114, 161–167. https://doi.org/10.1002/ejlt.201100102
  21. Ghazani, S. M., García‐Llatas, G., & Marangoni, A. G. (2014). Micronutrient content of cold‐pressed, hot‐pressed, solvent extracted and RBD canola oil: Implications for nutrition and quality. European Journal of Lipid Science and Technology, 116(4), 380-387. https://doi.org/10.1002/ejlt.201300288
  22. Ardabili, A. G., Farhoosh, R. and Haddad Khodaparast, M. H. (2011). Chemical composition and physicochemical properties of pumpkin seeds (Cucurbita pepo Subsp. pepo Var. Styriaka) grown in Iran. J. Agr. Sci. Tech., 13, 1053–1063http://jast.modares.ac.ir/article-23-9897-en.html
  23. Tsaknis, J., Lalas, S. and Lazos, E. S. (1997). Characterization of crude and purified pumpkin seed oil. Grasasy Aceites, 48, 267– 272. https://doi.org/10.3989/gya.1997.v48.i5.802
  24. Hamitri-Guerfi, F., Ouahrani, S., Benbouriche, A., Bey, M. B., Boulekbache-Makhlouf, L., & Madani, K. (2020). Impact of the extraction method on physico-chemical properties, phytochemicals, and biological activity of pumpkin seeds oil. The Annals of the University Dunarea de Jos of Galati. Fascicle VI-Food Technology, 44(1), 82-103. https://doi.org/10.35219/foodtechnology.2020.1.05
  25. Aktaş, N., Gerçekaslan, K. E., & Uzlaşır, T. (2018). The effect of some pre-roasting treatments on quality characteristics of pumpkin seed oil. OCL, 25(3), A301. https://doi.org/10.1051/ocl/2018025
  26. Bhattad, A. (2023). Review on viscosity measurement: devices, methods and models. Journal of Thermal Analysis and Calorimetry, 148(14), 6527-6543. https://doi.org/10.1007/s10973-023-12214-0
  27. Yang, X., Zhang, D., Ye, Y., & Zhao, Y. (2022). Recent advances in multifunctional fluorescent probes for viscosity and analytes. Coordination Chemistry Reviews, 453, 214336. https://doi.org/10.1016/j.ccr.2021.214336.
Al-Qadisiyah Journal For Agriculture Sciences
Volume 15, Issue 1
June 2025
Page 1-8

  • Receive Date 12 January 2025
  • Accept Date 08 March 2025