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Oxidative stability differences of aqueous model systems of photoautotrophic n-3 LC-PUFA rich microalgae: The antioxidative role of endogenous carotenoids KU Leuven
Microalgae rich in omega-3 long-chain polyunsaturated fatty acids (n-3LC-PUFA) have already shown their potential for developing functional food rich in these healthy fatty acids. Not only could they offer a more sustainable alternative for the fish stock that is currently relied upon but is unable to keep up with the demand, enrichment with certain microalgae also leads to oxidatively stable products. Although the reason for this stability has ...
Insight into the contribution of endogenous carotenoids of photoautotrophic microalgae to the oxidative stability of n-3 LC-PUFA KU Leuven
Both fish and fish oil are rich long-chain omega-3 polyunsaturated fatty acids (n‑3 LC‑PUFA) sources, that are, if part of the diet, important contributors to the n‑3 LC-PUFA related health benefits. Amongst others, these include the prevention of cardiovascular diseases. Sustainability issues resulting from the finite character of the fish stock however pose a threat on solely relying on fish, both directly and indirectly (via aquaculture), as ...
Unravelling ionization and fragmentation pathways of carotenoids using orbitrap technology Universiteit Antwerpen
Vegetables are a major source of carotenoids and carotenoids are identified as potentially important natural antioxidants that may aid in the prevention of several human chronic degenerative diseases. Characterization of carotenoids in organic biological matrices is a crucial step in any research valorization trajectory. This study reports for the first time the use of high mass resolution and exact mass orbitrap technology for the elucidation ...
Phenotypic, genetic, and environmental causes of variation in yellow skin pigmentation and serum carotenoids in Eurasian kestrel nestlings Universiteit Antwerpen
In the context of sexual selection and parent-offspring communication, carotenoid-based coloration operates as a dynamic condition-dependent signal, as pigments stored in the skin and in the bill can be reallocated to other tissues in accordance with physiological needs. We studied the proximate factors affecting the carotenoid-dependent coloration of the Eurasian kestrel (Falco tinnunculus). Kestrel nestlings show carotenoid-based coloration at ...
Heat and Light Stability of Pumpkin-Based Carotenoids in a Photosensitive Food: A Carotenoid-Coloured Beverage KU Leuven
This study aimed to evaluate carotenoid degradation kinetics in a beverage coloured with pumpkin juice concentrate during storage at dark and illuminated conditions at four temperatures (10, 20, 35 and 45 °C). Carotenoids were quantified by HPLC-DAD, and kinetic parameters for carotenoid degradation were estimated by one-step nonlinear regression analysis. During dark storage, degradation kinetics was modelled by fractional conversion ...
Birds receiving extra carotenoids keep singing during the sickness phase induced by inflammation Universiteit Antwerpen
Life history theory predicts that individuals have to trade-off resources between diverse energy-demanding activities, such as mounting an immune response and performing advertisement behaviour. The availability of immunomodulatory micronutrients can affect this trade-off. Carotenoids can upregulate both the humoral and cell-mediated immune response, but little is known about their effect on behavioural traits during the sickness phase induced ...
Carotenoids in Raw and Parboiled Brown and Milled Rice KU Leuven
Color measurements on flour of five raw rice cultivars with different degrees of milling (DOM) showed that red and brown pigments are concentrated in the outer rice layers, i.e. bran and outer endosperm (DOM < 15%). Extinction measurements (lambda 450 nm) of rice extracts showed that yellow pigments are virtually absent in the middle and core endosperm (DOM > 15%). The relation between the extinction values and the yellow color parameter ...
Environmental effects shape the maternal transfer of carotenoids and vitamin E to the yolk Universiteit Antwerpen
Introduction Maternal effects occur when the phenotype of the offspring is influenced by the phenotype of the mother, which in turn depends on her heritable state as well as on influences from the current and past environmental conditions. All of these pathways may, therefore, form significant sources of variation in maternal effects. Here, we focused on the maternal transfer of carotenoids and vitamin E to the egg yolk, using canaries as a ...