contains many valuable compounds, including polyphenols, peptides, and carotenoids that have been shown to exhibit biological activities. These compounds are not a priority ingredient in seaweed meal products for the current users. Hence, the aim of the study was to investigate the chemical and bioactive characteristics of as affected by seasonal variation and evaluate the potential benefits of alternative processing and the utilization of side streams for product development. The analysis of raw materials, press liquid, and press cake from alternative processing and the commercial seaweed meal at different harvesting periods indicated that the chemical composition is linked to the reproductive state of the algae. Phenolic content and ORAC activity increased following the seaweed's fertile period, making alternative processing more promising in July and October compared to June. Several valuable ingredients were obtained in the press liquid, including polyphenols, which can be used in the development of new high-value bioactive products. The suggested alternative processing does not have a negative effect on the composition and quality of the current seaweed meal products. Hence, the extraction of valuable ingredients from the fresh biomass during the processing of seaweed meal could be a feasible option to increase the value and sustainability of seaweed processing.
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http://dx.doi.org/10.3390/md20060340 | DOI Listing |
Aquac Nutr
October 2024
Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.
A nutritional bottleneck in salmonid aquaculture is the procurement of marine-derived compounds, such as essential amino and fatty acids, including omega-3 fatty acids, lysine, and methionine. Therefore, insects containing these compounds are highly promising as feed ingredients. The present study evaluates larvae of a "marine" insect (, the bristly-legged seaweed fly larvae, SWFL) reared on brown algae side streams as a feed ingredient for rainbow trout ().
View Article and Find Full Text PDFPoult Sci
December 2024
Department of Poultry Science, University of Georgia, 120 D.W. Brooks Drive, Athens, GA 30602, USA. Electronic address:
Caused by the Gram-positive bacteria Clostridium perfringens, necrotic enteritis (NE) is an enteric disease with significant economic implications in broiler production. This study employed an experimental NE model involving co-infection with Eimeria maxima and C. perfringens to assess whether sulfate polysaccharides extracted from marine macroalgae could mitigate the adverse effects of NE in broilers.
View Article and Find Full Text PDFJ Environ Manage
November 2024
Aquaculture and Fisheries Group, Wageningen University & Research, the Netherlands. Electronic address:
JDS Commun
September 2024
Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham, NH 03824.
We evaluated the supplementation of different sources of the brown seaweed (ASCO) meal on taste preference in dairy heifers during a sequential elimination experiment. Six organic certified Jersey heifers averaging (mean ± standard deviation) 16 ± 1.15 wk of age and 92 ± 9.
View Article and Find Full Text PDFJ Anim Physiol Anim Nutr (Berl)
November 2024
CIISA - Centre for Interdisciplinary Research in Animal Health, Faculdade de Medicina Veterinária, Universidade de Lisboa, Lisboa, Portugal.
Ulva lactuca, a green seaweed, may be an alternative source of nutrients and bioactive compounds for weaned piglets. However, it has a recalcitrant cell wall rich in a sulphated polysaccharide - ulvan - that is indigestible to monogastrics. The objective of this study was to evaluate the effect of dietary incorporation of 7% U.
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