Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Impact of nutrient stress on antioxidant production in three species of microalgae
Goiris, K.; Van Colen, W.; Wilches, I.; Leon-Tamariz, F.; De Cooman, L.; Muylaert, K. (2015). Impact of nutrient stress on antioxidant production in three species of microalgae. Algal Research 7: 51-57. https://dx.doi.org/10.1016/j.algal.2014.12.002
In: Algal Research. Elsevier: Amsterdam. ISSN 2211-9264, meer
|  |
| Author keywords |
Microalgae; Nutrient stress; Physiological changes; Antioxidantformation |
| Auteurs | | Top |
- Goiris, K., meer
- Van Colen, W., meer
- Wilches, I.
|
- Leon-Tamariz, F.
- De Cooman, L., meer
- Muylaert, K., meer
|
|
| Abstract |
Microalgae are a novel source of sustainable natural antioxidants with various applications, including food preservation. To optimize antioxidant production in microalgae, we investigated the influence of nutrient limitation on antioxidant content in three species, Phaeodactylum tricornutum, Tetraselmis suecica and Chlorella vulgaris. Microalgae were cultivated in batch culture under nutrient replete, P- and N-limited conditions. Total antioxidant activity of the biomass was measured using Trolox equivalent antioxidant capacity and square wave voltammetry. Additionally, contents of carotenoids, phenolics, tocopherols and ascorbic acid were measured. Nutrient limitation, particularly N-limitation, resulted in low antioxidant content. Both phenolic and carotenoid contents were significantly reduced in nutrient-limited cultures. In contrast tocopherols and ascorbic acid levels were higher in nutrient-limited cultures, particularly under P-limitation. Our results indicate that nutrient stress is not an effective strategy to enhance overall antioxidant content in microalgae, although it may be useful to enhance production of some vitamin antioxidants such as tocopherols or ascorbic acid. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
