Industrial or Cold-Pressed Oils? A Comparison of Physicochemical Properties in the Sabzevar Market
Irtiqa Imini Pishgiri Masdumiyat (Safety Promotion and Injury Prevention),
Vol. 13 No. 1 (1404),
2 December 2025
,
Page 20 - 14
https://doi.org/10.22037/iipm.v13i1.50627
Abstract
Edible oils, particularly cold-pressed oils, are susceptible to oxidative changes and quality deterioration during storage and distribution. This comparative study evaluated sunflower, sesame, and canola oils produced by cold-pressing and industrial methods, assessing physicochemical indices, including Refractive index, Acid value, Iodine value, Saponification value, Peroxide value, Anisidine value, and total oxidation (TOTOX) index, as well as the concentrations of lead, iron, arsenic, and copper. Results indicated that industrially produced oils exhibited greater stability over time, with TOTOX values below 10, corresponding to fresh and high-quality oils. In contrast, some cold-pressed oil samples showed higher primary and secondary oxidation indices, reflecting greater susceptibility to spoilage and reduced shelf life. Heavy metal concentrations were within the standard limits for most samples, although one industrial sunflower oil sample exceeded the permissible arsenic level. The findings underscore the importance of continuous quality monitoring, control of oilseed sources, and awareness-raising among producers and consumers.
Please cite this article as:
Abtahi M, Manavipur E, Eslami A, Shahsavani A, Alahabadi A, Saeedi S, Shokri Dariyan F. Industrial or Cold-Pressed Oils? A Comparison of Physicochemical Properties in the Sabzevar Market. Irtiqa Imini Pishgiri Masdumiyat .2026;13(1):14-20. https://doi.org/10.22037/iipm.v11i3.50627
- Health edible oil; cold-pressed oil; chemical quality characteristics; TOTOX; heavy metals
How to Cite
References
1- Askarpour SA, Molaee-Aghaee E, Ghaderi-Ghahfarokhi M, Shariatifar N, Mahmudiono T, Sadighara P, et al. Potentially toxic elements (PTEs) in refined and cold-pressed vegetable oils distributed in Ahvaz, Iran: A probabilistic health risk assessment. Biological Trace Element Research. 2023; 201(9):4567-75. https://link.springer.com/article/10.1007/s12011-022-03520-z.
2- Manavipour E, Eslami A, Shahsavani A, Alahabadi A, Saeedi R, Shokri Dariyan F et al. Investigating the physicochemical characteristics in edible oils produced by cold press and industrial methods in Sabzevar city. IJHE 2024; 17(1):1-22. https://ijhe.tums.ac.ir/browse.php?a_id=6818&slc_lang=en&sid=1&printcase=1&hbnr=1&hmb=1.
3- Hojjati M. The qualitative characteristics of the oils prepared in the extraction oil stores in the presence of the customer. Journal of Food Science and Technology (Iran). 2021; 17(108):1-15
4- Shahidi F. Quality characteristics of edible oils. Advances in Experimental Medicine and Biology. 2004; 542:239-49. https://pubmed.ncbi.nlm.nih.gov/15174585.
5- Farmani J, Tirgarian B, Razmpour M. Evaluation of physicochemical properties of sesame oil from local extraction stores of Mazandaran province. Journal of Food Science and Technology (Iran). 2019;15(84):175-87.
6- Food and Drug Administration of The Islamic Republic of Iran (IFDA). Guideline of health characteristics of oil seeds and fruits, edible oils and fats. Tehran: IFDA; 2007, Report No.: Fdop250711v2 (in Persian).
7- Iranian National Standardization Organization (INSO). Edible cold pressed oils –Specifications &Test methods. Tehran: INSO; 2015. Report No.: ISIRI 13392 (in Persian).
8- Iranian National Standardization Organization (INSO). Edible fat and oils – sunflowers oil specifications and test methods. Tehran: INSO; 2018. Report No.: ISIRI 1300 (in Persian).
9- Iranian National Standardization Organization (INSO). Edible fats and oils – refined sesame oil- specifications and test methods. Tehran: INSO; 2014. Report No.: ISIRI 1752 (in Persian).
10- Iranian National Standardization Organization (INSO). Animal and vegetable oils and fats – crude canola oil (crude low erucic acid rapeseed oil) – specifications and test method. Tehran: INSO; 2014. Report No.: ISIRI 4935-1 (in Persian). (in Persian).
11- Iranian National Standardization Organization (INSO). Animal and vegetable fats and oils -determination of copper iron and nickel contents -graphite furnace atomic absorption method. Tehran:INSO; 2020. Report No.: ISIRI 4088 (in Persian).
12- Iranian National Standardization Organization (INSO). Animal and vegetable fats and oils determination of lead by direct graphite furnace atomic absorption spectroscopy. Tehran: INSO; 2011. Report No.: ISIRI 4089 (in Persian).
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