Tashkent, Uzbekistan
Tashkent, Uzbekistan
Tashkent, Uzbekistan
Tashkent, Uzbekistan
Healthy foods and green processing are currently in the focus of scientific attention. Flax is considered a superfood that includes numerous beneficial ingredients. Its oil is a great source of polyunsaturated fatty acids. However, the heat-sensitive futures of the polyunsaturated fatty acids require low-temperature methods. Screw pressing can produce oils at lower temperatures, but a lower oil capacity makes it less advantageous. Pre-treatment of seeds as a crucial pre-processing stage affects the quality and quantity of oil. This research featured the effect of moisture content in flax seeds on the quantity and quality flax seed oil. The study involved local flax (Linum usitatissimum L.) from the Qashqadaryo Region, Uzbekistan. Standard methods were used to define the quality parameters of oil, i.e., acid value, free fatty acids content, peroxide value, oil recovery, and sediment content. Regression equations were obtained using the method of regression analysis. The highest oil recovery of 40.99% was observed at the moisture content of 9.56%. At 7.55%, the oil recovery dropped by 3.17%. The sediment content in the oil increased at lower moisture contents in the flax seeds (14.62–5.55%). The acid value, peroxide value, and free fatty acid content demonstrated both downward and upward trends when the moisture content increased. The moisture content in flax seeds affected the quality and quantity profile of screw-pressed oil. The optimal parameters of oil processing can yield health-beneficial and highly nutritional oil.
Screw pressing, moisture content, oil recovery, sediment content, peroxide value, acid value, free fatty acids
1. Teh S-S, Morlock GE. Effect-directed analysis of cold-pressed hemp, flax and canola seed oils by planar chromatography linked with (bio)assays and mass spectrometry. Food Chemistry. 2015;187:460-468. https://doi.org/10.1016/j.foodchem.2015.04.043
2. Dzuvor CKO, Taylor JT, Acquah C, Pan S, Agyei D. Bioprocessing of functional ingredients from flaxseed. Molecules. 2018;23(10). https://doi.org/10.3390/molecules23102444
3. Grajzer M, Szmalcel K, Kuźmiński Ł, Witkowski M, Kulma A, Prescha A. Characteristics and antioxidant potential of cold-pressed oils - Possible strategies to improve oil stability. Foods. 2020;9(11). https://doi.org/10.3390/foods9111630
4. Hasanov J, Navro’zov S. Extraction of seed oils with rich soaress of fatty asids. Proceedings of Sceitific Conference of PhD Studends of FAFR, FBFS and FHLESUA; 2019; Nitra: Slovak University of Agriculture in Nitra; 2019. p.75.
5. Jheimbach LLC, Port Royal VA. Determination of the GRAS status of the addition of whole and milled flax seed to conventional foods and meat and poultry products [Internet]. [cited 2022 Jun 20]. Available from: https://wayback.archive-it.org/7993/20170607013434%20/https://www.fda.gov/downloads/Food/IngredientsPackagingLabeling/GRAS/NoticeInventory/UCM269248.pdf
6. Al-Hassawi F, Al-Ghanim J, Al-Foudari M, Al-Othman A, Sidhu JS. Effects of flaxseed on the nutritional and sensory qualities of pan and Arabic flat breads. Foods and Raw Materials. 2023;11(2):272-281. https://doi.org/10.21603/2308-4057-2023-2-571
7. Grajzer M, Wiatrak B, Gębarowski T, Matkowski A, Grajeta H, Rój E, et al. Chemistry, oxidative stability and bioactivity of oil extracted from Rosa rugosa (Thunb.) seeds by supercritical carbon dioxide. Food Chemistry. 2021;335. https://doi.org/10.1016/j.foodchem.2020.127649
8. Sydow Z, Idaszewska N, Janeba-Bartoszewicz E, Bieńczak K. The influence of pressing temperature and storage conditions on the quality of the linseed oil obtained from Linum Usitatissimum L. Journal of Natural Fibers. 2021;18(3):442-451. https://doi.org/10.1080/15440478.2019.16288667
9. Bhargavi G, Nageswara Rao P, Renganathan S. Review on the extraction methods of crude oil from all generation biofuels in last few decades. IOP Conference Series: Materials Science and Engineering. 2018;330. https://doi.org/10.1088/1757-899X/330/1/012024
10. Shim YY, Gui B, Wang Y, Reaney MJT. Flaxseed (Linum usitatissimum L.) oil processing and selected products. Trends in Food Science and Technology. 2015;43(2):162-177. https://doi.org/10.1016/j.tifs.2015.03.001
11. Willems P, Kuipers NJM, De Haan AB. Hydraulic pressing of oilseeds: Experimental determination and modeling of yield and processing rates. Journal of Food Engineering. 2008;89(1):8-16. https://doi.org/10.1016/j.jfoodeng.2008.03.023
12. Kalogianni EP, Georgiou D, Hasanov JH. Olive oil processing: Current knowledge, literature gaps, and future perspectives. Journal of the American Oil Chemists' Society. 2019;96(5):481-507. https://doi.org/10.1002/aocs.12207
13. Jahongir HH, Sherzod DM, Shavkat IS. Screw pressed (Linum usitatissimum) oil. Book of Abstracts of the 5th International Scientific Conference Agrobiodiversity for Improving the Nutrition, Health, Quality of Life and Spiritual Human Development; 2021; Nitra. Nitra: Slovak University of Agriculture; 2021. p. 59. https://doi.org/10.15414/2021.9788055224015
14. Siger A, Józefiak M, Górnaś P. Cold-pressed and hot-pressed rapeseed oil: The effects of roasting and seed moisture on the antioxidant activity, canolol, and tocopherol level. Acta Scientiarum Polonorum, Technologia Alimentaria. 2017;16(1):69-81. https://doi.org/10.17306/J.AFS.2017.2017.0458
15. Singh J, Bargale PC. Development of a small capacity double stage compression screw press for oil expression. Journal of Food Engineering. 2000;43(2):75-82. https://doi.org/10.1016/S0260-8774(99)00134-X
16. Wiesenborn D, Doddapneni R, Tostenson K, Kangas N. Cooking indices to predict screw performance for crambe seed. Journal of the American Oil Chemists' Society. 2001;78(5):467-471. https://doi.org/10.1007/s11746-001-0287-y
17. Shim YY, Gui B, Wang Y, Reaney MJT. Flaxseed (Linum usitatissimum L.) oil processing and selected products. Trends in Food Science and Technology. 2015;43(2):162-177. https://doi.org/10.1016/j.tifs.2015.03.001
18. Oilseed processing for small-scale producers [Internet]. [cited 2022 Jun 20]. Available from: https://www.kpu.ca/sites/default/files/Oilseed%20Processing%20for%20Small-Scale%20Producers%20.pdf
19. Codex Alimentarius. Codex Standard for edible fats and oils not covered by individual standards [Internet]. [cited 2022 Jun 20]. Available from: https://www.fao.org/3/y2774e/y2774e03.htm#bm3
20. Zheng Y, Wiesenborn DP, Tostenson K, Kangas N. Screw pressing of whole and dehulled flaxseed for organic oil. Journal of the American Oil Chemists' Society. 2003;80(10):1039-1045. https://doi.org/10.1007/s11746-003-0817-7
21. Mridula D, Barnwal P, Singh KK. Screw pressing performance of whole and dehulled flaxseed and some physico-chemical characteristics of flaxseed oil. Journal of Food Science and Technology. 2013;52(3):1498-1506. https://doi.org/10.1007/s13197-013-1132-6
22. Singh KK, Jhamb SA, Kumar R. Effect of pre-treatments on performance of screw pressing for flaxseed. Journal of Food Process Engineering. 2011;35(4):543-556. https://doi.org/10.1111/j.1745-4530.2010.00606.x
23. Mahesar SA, Sherazi STH, Khaskheli AR, Kandhroc AA, Unddin S. Analytical approaches for the assessment of free fatty acids in oil and fat. Analytical Methods. 2014;14(6):4956-4963. https://doi.org/10.1039/C4AY00344F
24. Nagaraj G. Oilseeds - Properties, processing, products and procedures. New Delhi: New India Publishing Agency; 2009. 602 p.
25. Adejumo BA, Inaede SG, Adamu TS. Effect of moisture content on the yield and characteristics of oil from Moringa oleifera seeds. Academic Research International. 2013;4(4):160-170.
26. Rokosik E, Dwiecki K, Siger A. The quality of cold-pressed rapeseed oil obtained from seeds of Brassica napus L. with increased moisture content. Acta Scientiarum Polonorum, Technologia Alimentaria. 2019;18(2):205-218. https://doi.org/10.17306/J.AFS.2019.0672
27. Singh KK, Wiesenborn DP, Tostenson K, Kangas N. Influence of moisture content and cooking on screw pressing of crambe seed. Journal of the American Oil Chemists' Society. 2002;79(2):165-170. https://doi.org/10.1007/s11746-002-0452-3
28. Singh J, Bargale PC. Mechanical expression of oil from linseed. Journal of Oilseeds Research. 1990;7:106-110.
