Journal
EUROPEAN FOOD RESEARCH AND TECHNOLOGY
Volume 244, Issue 12, Pages 2181-2190Publisher
SPRINGER
DOI: 10.1007/s00217-018-3128-y
Keywords
Drying machine; Fatty acids; Oxidative stability; Storage; Sun dried
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Funding
- Altas Oil Industry Inc (Ordu, Turkey)
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This study's objective was to assess the fatty acid composition and oil oxidation traits of hazelnuts that were dried with a drying machine (DM), on concrete ground (CG), and grass ground (GG) during 12-month storage (2014-2016) at 20-25 degrees C and 70-90% relative humidity. The result showed that monounsaturated was the major fatty acid groups (83.56-85.03%) in hazelnut, followed by polyunsaturated (9.36-11.17%) and saturated (5.61-6.60%) fatty acids. Furthermore, the minor fatty acid contents found were approximately 0.5% that of the total fatty acids. However, none of the following were found at detectable level: caproic acid (C6: 0), caprylic (C8: 0), capric (C10: 0), lauric (C12: 0), eicosadienoic (20: 2), erucic (22: 1), docosadienoic (22: 2) and lignoceric (C24: 0) acids. Consequently, the comparison showed that over 12-month storage, drying hazelnut using DM provides products with a higher oxidative stability than those using sun-dried methods (i.e., CG and GG). Therefore, DM seems to be suitable procedure for drying hazelnut.
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