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The cell wall of autotrophic microalgae influences the enrichment of long chain omega-3 fatty acids in the egg
Lemahieu, C.; Bruneel, C.; Dejonghe, C.; Buyse, J.; Foubert, I. (2016). The cell wall of autotrophic microalgae influences the enrichment of long chain omega-3 fatty acids in the egg. Algal Research 16: 209-215. https://dx.doi.org/10.1016/j.algal.2016.03.015
In: Algal Research. Elsevier: Amsterdam. ISSN 2211-9264
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| Trefwoorden |
Isochrysis galbana Parke, 1949 [WoRMS]; Nannochloropsis oculata (Droop) D.J.Hibberd, 1981 [WoRMS]
Marien/Kust |
| Author keywords |
n-3 LC-PUFA enrichment; HPH disruption; Nannochloropsis oculata;Isochrysis galbana; Fish oil; Eggs |
| Auteurs | | Top |
- Lemahieu, C.
- Bruneel, C.
- Dejonghe, C.
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| Abstract |
Two microalgal species, Isochrysis galbana and Nannochloropsis oculata, were supplemented to the diet of laying hens, in either non-disrupted or disrupted (by high pressure homogenization) form, to examine the effect of the presence of a cell wall on the omega-3 long chain polyunsaturated fatty acid (n − 3 LC-PUFA) enrichment in the egg yolk. Only supplementation of Nannochloropsis led to significant differences in enrichment by supplementation of the two forms, with the highest enrichment obtained with the HPH-disrupted form. This confirms the presence of a rigid cell wall for this species, which reduces the bioaccessibility of the n − 3 PUFA. The needed conversion reaction from EPA to DHA on the other hand did not seem to effect the enrichment, since the same n − 3 LC-PUFA enrichment was obtained with the supplementation of the DHA source Isochrysis and the EPA source Nannochloropsis, the last in HPH-disrupted form.Next to the microalgal species, fish oil was also supplemented to the diet of the laying hens. Fish oil resulted in a higher enrichment in comparison with the microalgal species, either non-disrupted or HPH-disrupted. This might suggest a difference in bioaccessibility of the n − 3 PUFA when added as oil or biomass. |
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