Abstract
Linseed oil is known for its limited oxidative stability due to its high content of polyunsaturated fatty acids, particularly linolenic acid. This article presents the results of a study investigating the impact of freeze-dried alginate beads containing extracts from sage leaves, calendula flowers, and blueberry fruit on lipid peroxidation and antioxidant status in cold-pressed linseed oil during storage.
Highlights
- First application of alginate beads with plant extracts to improve oil quality.
- Beads with plant extracts release antioxidants into the oil during storage.
- The tested beads with plant extract inhibit lipid peroxidation.
- The proposed solution protects phytosterols from oxidation.
As part of the study, oils stored with the alginate beads were analyzed for changes in lipid peroxidation (TBARS and peroxide value), volatile compound profile, fatty acid composition, phytosterol content, and antioxidant activity. The results demonstrated that the use of alginate beads inhibited undesirable changes in the oil. Specifically, oils stored with beads, particularly those containing sage and calendula extracts, exhibited higher antioxidant potential, including increased levels of polyphenol compounds and carotenoids, a higher concentration of β-sitosterol, significantly reduced peroxide values, and lower levels of 3,5-octadien-2-one.
These findings suggest that alginate beads enriched with plant extracts represent an innovative approach to enhancing the oxidative stability of linseed oil during storage, while potentially preserving its high biological value and sensory characteristics.
Read more here
Tomasz Piechowiak, Maciej Balawejder, Freeze-dried alginate beads as carriers of plant-based antioxidants to enhance the oxidative stability of cold-pressed linseed oil, Journal of Stored Products Research, Volume 115, 2026, 102824, ISSN 0022-474X, https://doi.org/10.1016/j.jspr.2025.102824.
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