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Updated: Oct 21, 2025

Determination of Total Lipid and Lipid Classes in Marine Samples
Published on: December 11, 2021
Evaluation of trans fatty acids, carbonyl compounds and bioactive minor components in commercial linseed oils
Zihan Xu1, Shanshan Liu1, Mingyue Shen2
1State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
Abstract:
Trans fatty acids (TFAs), associated with the risks of coronary heart disease and diabetes, are formed by isomerization of unsaturated fatty acids during refining of linseed oils. In this study, TFAs and the chemical characteristics (acid value, peroxide value, carbonyl compounds, bioactive minor components and fatty acids) in 32 commercial linseed oils were investigated, and the correlation among them were further analyzed. Results showed that C18:3 TFAs were predominant TFAs in linseed oils and about 9% of the samples had TFA contents above 2 g/100 g fat, as well as the average level of TFA in the refined samples was higher than that in the unrefined oils. The correlation analyses suggested C18:3 TFAs exhibited significant negative correlations with acid value, levels of acetone, trans-2-nonenal, campesterol and α-linolenic acid. These results provided a comprehensive insight of TFAs in linseed oil and had important implications for consumers and linseed oil industry.
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