Extraction of proteins from two marine macroalgae, Ulva sp. and Gracilaria sp., for food application, and evaluating digestibility, amino acid composition and antioxidant properties of the protein concentrates

Kazir, Meital; Abuhassira, Yarden; Robin, Arthur; Nahor, Omri; Luo, Jincheng; Israel, Álvaro; Golberg, Alexander; Livney, Yoav D.

doi:10.1016/j.foodhyd.2018.07.047

Cited by 184 publications

(113 citation statements)

References 69 publications

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“…This can be achieved either through the direct extraction and isolation of protein or by removing non-protein components, such as ash and soluble carbohydrates, thus increasing the relative proportion of protein in the residual macroalgal biomass. 105,[143][144][145][146] However, these processes are still being developed and while not yet commercialized, 145 they have been successfully applied to Ulva ohnoi, a commercially grown bioremediation species, to increase its protein content from 22% to 45% on a dry-weight basis. 105 Importantly, the quality of the concentrated protein in that study was comparable with that of soybean meal and white fish meal, suggesting that it would be a suitable protein replacement option, with the caveat that it still must be tested in vivo.…”

Section: Macroalgaementioning

confidence: 99%

The Future of Aquatic Protein: Implications for Protein Sources in Aquaculture Diets

et al. 2019

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Approximately 70% of the aquatic-based production of animals is fed aquaculture, whereby animals are provided with high-protein aquafeeds. Currently, aquafeeds are reliant on fish meal and fish oil sourced from wild-captured forage fish. However, increasing use of forage fish is unsustainable and, because an additional 37.4 million tons of aquafeeds will be required by 2025, alternative protein sources are needed. Beyond plantbased ingredients, fishery and aquaculture byproducts and insect meals have the greatest potential to supply the protein required by aquafeeds over the next 10-20 years. Food waste also has potential through the biotransformation and/or bioconversion of raw waste materials, whereas microbial and macroalgal biomass have limitations regarding their scalability and protein content, respectively. In this review, we describe the considerable scope for improved efficiency in fed aquaculture and discuss the development and optimization of alternative protein sources for aquafeeds to ensure a socially and environmentally sustainable future for the aquaculture industry.

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Section: Macroalgaementioning

confidence: 99%

The Future of Aquatic Protein: Implications for Protein Sources in Aquaculture Diets

et al. 2019

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“…In order to avoid the predicted overestimation of crude protein content in food web compartments other than shrimp, it was decided in this study to determine the substrate specific N-to-protein conversion factor of flocculated matter in the water column. Surprisingly, instead of finding the hypothesized lower conversion factor of around 5 (Liang et al, 2014, Kazir et al, 2019, a relative high N-to-protein factor of 7.31 was found. This factor was determined by analysing the content of individual amino acids, believed to be the most nutritionally relevant and accurate estimation of protein content in food-stuffs (Mariotti et al, 2008).…”

Section: Reconstructed Crude Protein Content Food Web Compartmentscontrasting

confidence: 66%

“…This is especially the case for bacteria and plants (including algae), as non-protein N is usually higher in plants and bacteria than in animal products. For example, N-to-protein ratio for green and red macro algae is found to be 4.59 and 5.12 (Kazir et al, 2019, Liang et al, 2014. In aquaculture, biofloc production in the water column is actively stimulated in order to provide an additional protein source for shrimp and fish (called Biofloc Technology) (Avnimelech, 2009).…”

Section: Reconstructed Crude Protein Content Food Web Compartmentsmentioning

confidence: 99%

Nutritious ponds : valorising waste using natural production

Hermsen¹

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CHAPTER 1 high consumer biomass supported by comparati vely low primary producer biomass). But in eutrophic systems, the consumers relied mostly on HUFA availability, and oft en HUFA limitati on resulted in algal blooms. The study showed that opti mal levels of both HUFA as well as phosphorous (stoichiometry) at the plant-animal interface are crucial for shaping the food web pyramid and HUFA conservati on through the food web. Figure 2. Picture f rom van de Waal et al., (2009). Primary producers show a wide range of C:P rati os. Consumer animals like zooplankton or fi sh show a narrow-fi xed range due to homeostasis. According to the stoichiometry hypothesis, a possible mismatch and trophic decoupling might be expected when C:N:P rati os become too far apart between food and consumer. 1.2. Formulati on of the problem 1.2.1 Challenges in aquaculture World aquaculture producti on conti nues to be the fastest growing animal-food producing sector with an immense increase from 32.4 to 66.6 million MT in the period 2000-2012. Aquaculture products are an important source of animal protein and HUFA, which are crucial for human health. The producti on from capture fi sheries reached its maximum potenti al in most main fi shing areas and further increases in seafood supply need to come from aquaculture. To meet the growing demand for fi sh-food products with an increasing world populati on to 10.5 billion people in 2050 (an increase of 36 % compared to 2019 and constant birth rates), aquaculture producti on needs to grow to 150 million ton by 2050. To do so, the aquaculture sector needs to intensify, bringing along serious challenges regarding sustainable growth. In aquaculture, more than 80% of fi sh and 98% of shrimp are produced in ponds (FAO 2014). Over the last decades, pond producti on intensifi ed. This This chapter has been submitted for publication to "Aquaculture Nutrition" as:

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“…Macroalgae have significantly higher protein content in comparison to the terrestrial plant proteins sources 50 . Macroalgae proteins offer nutraceutical, pharmaceutical and cosmeceutical properties due to the presence of antioxidant, antihypertensive, immune-modulatory, anticoagulant and hepeto-protective substances 51,52,53 . Seaweed is also extensively utilised as ingredients in food additives (polysaccharide gels (hydrocolloids), polysaccharides and biologically active materials), pet food, feeds, human and animal food preparations owing to its high contents of polyunsaturated fatty acids, carbohydrates, vitamins, minerals, and dietary fibers 54 .…”

Section: Protein Platformmentioning

confidence: 99%

Novel macroalgae (seaweed) biorefinery systems for integrated chemical, protein, salt, nutrient and mineral extractions and environmental protection by green synthesis and life cycle sustainability assessments

et al. 2019

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Extraction of proteins from two marine macroalgae, Ulva sp. and Gracilaria sp., for food application, and evaluating digestibility, amino acid composition and antioxidant properties of the protein concentrates

Cited by 184 publications

References 69 publications

The Future of Aquatic Protein: Implications for Protein Sources in Aquaculture Diets

The Future of Aquatic Protein: Implications for Protein Sources in Aquaculture Diets

Nutritious ponds : valorising waste using natural production

Novel macroalgae (seaweed) biorefinery systems for integrated chemical, protein, salt, nutrient and mineral extractions and environmental protection by green synthesis and life cycle sustainability assessments

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