Protein value and health aspects of the seaweeds Saccharina latissima and Palmaria palmata evaluated with mink as model for monogastric animals

Krogdahl, Åshild; Jaramillo-Torres, Alexander; Ahlstrøm, Øystein; Chikwati, Elvis; Aasen, Inga Marie; Kortner, Trond M.

doi:10.1016/j.anifeedsci.2021.114902

Cited by 22 publications

(13 citation statements)

References 34 publications

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“…This is due to the ionic interactions of cell-wall polysaccharides (xylans) with proteins and the high viscosity of aqueous extracts, reducing the protein bioaccessibility to proteolytic enzymes. Results from a mink feeding trial supported the findings from in vitro assays and revealed the low apparent amino acid digestibility (especially histidine) of dried and milled P. palmata fronds added to the diet, and a lower body weight of the animals (minks) fed with this diet compared to a control containing fish meal (Krogdahl et al 2021). In contrast, the inclusion of up to 15% P. palmata into salmon smolt diets did not significantly affect fish growth (feed conversion ratio, specific growth rate) or health parameters (hematological, immunological and hepatic functions) (Wan et al 2016).…”

Section: Ingredient In Human and Animal Nutritionsupporting

confidence: 66%

“…Bjarnadóttir et al (2018) and Naseri et al (2020) obtained a higher protein concentration and proportion of EAA (approximately between 40 and 50%) in the solid phase from the extraction of enzyme-treated P. palmata samples compared to levels found in the aqueous phase. A protein concentrate obtained from a similar protocol was shown to have a higher apparent digestibility in minks compared to diets containing whole P. palmata (Krogdahl et al 2021). The authors concluded that such a protein concentrate may have a potential as animal feed ingredient, although it should be combined with other protein-rich sources in feed formulations to compensate for some limiting amino acids.…”

Section: Ingredient In Human and Animal Nutritionmentioning

confidence: 99%

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Concise review of the red macroalga dulse, Palmaria palmata (L.) Weber & Mohr

et al. 2023

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Palmaria palmata, commonly referred to as dulse, is a well-known and highly valued red macroalga distributed along the North Atlantic shores within a latitude range of approximately 40 to 80 °N. It is a species of commercial importance with historical records of use as food dating back several centuries to the current harvesting of dulse by hand-picking on the foreshore in Western Europe as well as Canada (New Brunswick and Nova Scotia) and USA (Maine). Because the demand for P. palmata increases and future sustainable commercial developments cannot rely solely on wild-harvested biomass, significant efforts have been made by research and industrial actors to cultivate the species. The low rates of spore release and germination, high mortality and epibiont contaminations remain major bottlenecks and point towards the need for optimized hatchery methods to enable upscaling the biomass production. The present review summarizes the available knowledge related to the biology, including the unique life history of the species among the Rhodophyta, the ecology as well as the nutrient composition and quality of P. palmata as food. Recent advances in taxonomy and cultivation techniques are reported along with a status of regulations for the commercial harvest of wild populations. An outlook on future industrial perspectives using biomass of P. palmata is also given.

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Section: Ingredient In Human and Animal Nutritionsupporting

confidence: 66%

Section: Ingredient In Human and Animal Nutritionmentioning

confidence: 99%

Concise review of the red macroalga dulse, Palmaria palmata (L.) Weber & Mohr

et al. 2023

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“…The fact that pepsin-resistant protein is lower in red seaweeds than in brown seaweeds [ 58 ] may explain the differences in the digestive process in both species. Indeed, low protein digestibility also is reported for macroalgae in in vivo studies [ 9 , 60 ]. Macroalgae pre-treatments, such as fermentation and heat treatments, have been evaluated, aiming to increase digestibility [ 9 , 53 ] and enhance bioactivity [ 61 ].…”

Section: Discussionmentioning

confidence: 99%

In Vitro Bioaccessibility of Proteins and Bioactive Compounds of Wild and Cultivated Seaweeds from the Gulf of Saint Lawrence

et al. 2023

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Despite the increased interest in macroalgae protein and fibers, little information is available on their bioaccessibility. The application of an in vitro gastrointestinal digestion model to study the degree of disintegration and release of proteins with expressed bioactivities from wild and cultivated Palmaria palmata and Saccharina latissima was proposed in this study. Macroalgae from the Gulf of St Lawrence, Canada, were submitted to digestive transit times of 2 (oral), 60 (gastric) and 120 (duodenal) minutes. Among wild samples, P. palmata had a higher percentage of disintegration, protein release and degree of hydrolysis than S. latissima. While the least digested sample, wild S. latissima, was the sample with the highest antioxidant activity (210 μmol TE g−1), the most digested sample, cultivated P. palmata, presented the highest ability to inhibit the angiotensin-converting enzyme (ACE), reaching 32.6 ± 1.2% at 3 mg mL−1. ACE inhibitory activity increased from 1 to 3 mg mL−1, but not at 5 mg mL−1. Wild samples from both species showed an ACE inhibition around 27.5%. Data suggested that the disintegration of the samples was influenced by their soluble and insoluble fiber contents. Further information on the bioaccessibility and bioactivity of these macroalgae should consider the characterization of digestion products other than protein, as well as the effects of previous product processing.

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“…In remote regions, like the Arctic, seaweeds are considered as local protein sources for sustainable sheep farming to replace imported soya (Bay-Larsen et al, 2018). However, the latest research highlights the challenges when applying seaweed proteins in animal feed (Novoa-Garrido et al, 2017;Özkan Gülzari et al, 2019;Emblemsvåg et al, 2020;Koesling et al, 2021;Krogdahl et al, 2021). Some seaweed species, for example, Asparagopsis taxiformis, have antimethanogenic activity on fermentation and can inhibit methanogenesis in the rumen at very low inclusion levels (Machado et al, 2016).…”

Section: Feedmentioning

confidence: 99%

Valorization of Marine Waste: Use of Industrial By-Products and Beach Wrack Towards the Production of High Added-Value Products

et al. 2021

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Biomass is defined as organic matter from living organisms represented in all kingdoms. It is recognized to be an excellent source of proteins, polysaccharides and lipids and, as such, embodies a tailored feedstock for new products and processes to apply in green industries. The industrial processes focused on the valorization of terrestrial biomass are well established, but marine sources still represent an untapped resource. Oceans and seas occupy over 70% of the Earth’s surface and are used intensively in worldwide economies through the fishery industry, as logistical routes, for mining ores and exploitation of fossil fuels, among others. All these activities produce waste. The other source of unused biomass derives from the beach wrack or washed-ashore organic material, especially in highly eutrophicated marine ecosystems. The development of high-added-value products from these side streams has been given priority in recent years due to the detection of a broad range of biopolymers, multiple nutrients and functional compounds that could find applications for human consumption or use in livestock/pet food, pharmaceutical and other industries. This review comprises a broad thematic approach in marine waste valorization, addressing the main achievements in marine biotechnology for advancing the circular economy, ranging from bioremediation applications for pollution treatment to energy and valorization for biomedical applications. It also includes a broad overview of the valorization of side streams in three selected case study areas: Norway, Scotland, and the Baltic Sea.

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Protein value and health aspects of the seaweeds Saccharina latissima and Palmaria palmata evaluated with mink as model for monogastric animals

Cited by 22 publications

References 34 publications

Concise review of the red macroalga dulse, Palmaria palmata (L.) Weber & Mohr

Concise review of the red macroalga dulse, Palmaria palmata (L.) Weber & Mohr

In Vitro Bioaccessibility of Proteins and Bioactive Compounds of Wild and Cultivated Seaweeds from the Gulf of Saint Lawrence

Valorization of Marine Waste: Use of Industrial By-Products and Beach Wrack Towards the Production of High Added-Value Products

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