Oxidative stability of emulsions made with self-extracted oil from euryhaline microalgae Spirulina and Scenedesmus.
In: Algal Research, Jg. 75 (2023-09-01), S. N.PAG
academicJournal
Zugriff:
The fatty acid compositions and tocochromanol concentrations (α-, γ + β-, δ-tocopherol and δ-tocotrienol) of oil extracted from euryhaline microalgal strains (Spirulina subsalsa (Spi A), Scenedesmus MKB (Scnd) and Spirulina sp. (Spi B)) were analyzed. The oxidative stability of microalgae-based oil-in-water emulsions at pH 7 was also determined by measuring lipid hydroperoxide and headspace hexanal formation. The content of saturated fatty acids was highest in Spi B oil whereas n-3 linolenic and eicosapentaenoic acids were high in Spi A. No significant difference was reported in the total tocochromanol homolog contents of Spi A and Scnd oils, but it was significantly higher in Spi B oil. Tocochromanol depletion analysis revealed that δ-tocopherol and δ-tocotrienol had a slower depletion rate than other homologs and that their high content prolonged the hexanal lag phase of Spi B oil-in-water emulsions up to 21 days. The fact that Spi B had the lowest unsaturated fatty acid content and the highest tocochromanol concentration resulted in greater oxidative stability. Spi A oxidized faster than Scnd irrespective of their similar tocochromanol content which might be due to the higher amounts of unstable 18:3 and 20:5 fatty acids. These data suggest that these microalgal oils could have applications in sustainable food systems. • Marine microalgae are natural sources of omega-3 fatty acids including EPA and DHA. • Microalgae-extracted oils can possibly be utilized in vegan foods as an alternative to fish oil. • Tocochromanol homologs improved the oxidative stability of microalgae-based oil-in-water emulsions. • Emulsions containing more tocochromanol and less unsaturated fatty acids were more stable. [ABSTRACT FROM AUTHOR]
Copyright of Algal Research is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Titel: |
Oxidative stability of emulsions made with self-extracted oil from euryhaline microalgae Spirulina and Scenedesmus.
|
---|---|
Autor/in / Beteiligte Person: | Kaur, Manpreet ; Bhatia, Surekha ; Bayram, Ipek ; Decker, Eric A. ; Phutela, Urmila Gupta |
Zeitschrift: | Algal Research, Jg. 75 (2023-09-01), S. N.PAG |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 2211-9264 (print) |
DOI: | 10.1016/j.algal.2023.103280 |
Sonstiges: |
|