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Determination and correlation analysis of phytochemical compounds, antioxidant activity, and oxidative stability of different edible oils.

Authors :
Maghsoudlou, Elahe
Raftani Amiri, Zeynab
Esmaeilzadeh kenari, Reza
Source :
Journal of Food Measurement & Characterization; Jan2024, Vol. 18 Issue 1, p714-726, 13p
Publication Year :
2024

Abstract

In this research, phytochemical compounds and antioxidant capacity in camelina oil (CMO) were identified through chromatography and spectrophotometry methods and compared with canola (CNO) and sunflower (SNO) oils. The antioxidant potential of the oils was evaluated through DPPH scavenging and the β-carotene bleaching (BCB) methods. Furthermore, fatty acid profiles and some stability indices of the oil were measured. Finally, the correlation coefficients were assessed between the parameters. The results revealed that γ-tocopherol (659.02 mg α-T/kg) and β-sitosterol (2069.6 mg Chol/kg) were the main tocopherol and sterol in CMO, respectively. Tocopherol content in the oils studied did not differe significantly. The highest contents of sterols, carotenoids, and chlorophylls were found in CNO while the highest contents of phenols were found in CMO. CMO and CNO showed the highest DPPH scavenging (IC<subscript>50</subscript> of 104.74 ± 1.85 and 123.33 ± 19.32 mg/mL, respectively) and BCB (IC<subscript>50</subscript> of 78.41 ± 1.31 and 77.91 ± 5.37 mg/mL, respectively) activities. The peroxide and anisidine values (PV and AnV, respectively) of the oil were found to be in the order of SNO > CMO > CNO, while MUFA:PUFA ratio and the oxidative stability index (OSI) were CNO > CMO > SNO and CNO > SNO > CMO, respectively. The highest correlation of OSI was detected to be with sterol content (r: 0.920) and MUFA:PUFA ratio (r: 0.950) and the highest correlation of IC<subscript>50</subscript> of antioxidant capacity assays was found to be with tocopherol content (r > 0.996). Overall, the correlation analyses indicated that in addition to fatty acid profile and level of oil unsaturation, the antioxidant content of cold-pressed oils should be considered to determine oil quality. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
21934126
Volume :
18
Issue :
1
Database :
Complementary Index
Journal :
Journal of Food Measurement & Characterization
Publication Type :
Academic Journal
Accession number :
175006070
Full Text :
https://doi.org/10.1007/s11694-023-02241-8