Effects of oxygen concentration on the growth of Nannochloropsis sp.
Raso, S. - \ 2013
Wageningen University. Promotor(en): Rene Wijffels, co-promotor(en): Marian Vermue. - S.l. : s.n. - ISBN 9789461737472 - 157
algen - voer - aquacultuur - visvoeding - fotobioreactoren - eicosapentaeenzuur - zuurstof - algae - feeds - aquaculture - fish feeding - photobioreactors - eicosapentaenoic acid - oxygen
ANannochloropsissp. is a promising microalgal resource for production of food, feed and bio-based commodities, as it can grow relatively fast and combines high lipid content with high content of poly-unsaturated fatty acids. High productivity with constant product quality can be achieved in fully controlled closed photobioreactors. In these closed photobioreactors, however, oxygen accumulation occurs and causes inhibition of the growth by photorespiration combined with photoinhibition.
The inhibitory effects of photorespiration and photoinhibition can be partly dealt with via the carbon concentration mechanism of the cells and by activation of the water-water cycle. At constant high oxygen concentration and high light intensity, however, the growth of the cells ceases. To our surprise, the accumulating oxygen did not affect the growth rate of the algae if the oxygen was removed regularly. In large scale production in closed photobioreactors, it is thus crucial apply degassing to achieve high algal productivity.
Gezonde vis alternatieven literatuurstudie binnen het beleidsondersteunende project "Nieuwe marktgerichte duurzame eiwitconcepten"
Sluis, A.A. van der; Vereijken, J.M. - \ 2013
Wageningen : Wageningen UR - Food & Biobased Research (Rapport / Wageningen UR Food & Biobased Research nr 1383) - 39
vis - visconsumptie - docosahexaeenzuur - eicosapentaeenzuur - omega-3 vetzuren - voedingsstoffenbronnen - algen - aanbevolen dagelijkse hoeveelheden - voedingsmiddelenwetgeving - voedselverrijking - voeding en gezondheid - Nederland - fish - fish consumption - docosahexaenoic acid - eicosapentaenoic acid - omega-3 fatty acids - nutrient sources - algae - recommended dietary allowances - food legislation - food enrichment - nutrition and health - Netherlands
Within the policy supporting project "New market-oriented sustainable protein concepts" (BO-08-018.03-002), a literature study is performed to healthy fish alternatives. The research question was: "What is the nutritional importance of fish consumption, what are alternatives to fish, are there technological and legal barriers, and what are the limits for enrichment with nutritional components?"