Sustainable Fish and Seafood Production and Processing

Saleh, Norhan E.; Wassef, Elham A.; Abdel-Mohsen, Heba H.

doi:10.1016/b978-0-12-824296-4.00002-5

Cited by 21 publications

(19 citation statements)

References 141 publications

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“…These findings support prior research on the fatty acid profile of seabream by‐product oil. [ 5,28 ] Messina et al. [ 33 ] found that MUFAs were the most prevalent (49.13%) in this species, followed by PUFAs (27.38%) and SFAs (23.51%).…”

Section: Resultsmentioning

confidence: 99%

“…These findings support prior research on the fatty acid profile of seabream by-product oil. [5,28] Messina et al [33] found that MUFAs were the most prevalent (49.13%) in this species, followed by PUFAs (27.38%) and SFAs (23.51%). Similarly, Pateiro et al [6] reported that seabream gilthead by-products oil included a high concentration of MUFAs (44.05-46.08%), PUFAs (31-34%), n-3 fatty acids (12-14%), and EPA + DHA (6-8%).…”

Section: Fatty Acid Compositionmentioning

confidence: 88%

“…Moreover, most by‐products are typically discarded into the environment, leading to pollution and to the loss of valuable compounds. [ 4,5 ] However, fish by‐products represent significant constituents such as proteins, lipids, fat‐soluble vitamins, enzymes, minerals, and bioactive compounds. In this circumstance, the interest in valorizing fish by‐products to extract valuable products has high potential.…”

Section: Introductionmentioning

confidence: 99%

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Ultrasound‐ and Microwave‐Assisted Extractions Facilitate Oil Recovery from Gilthead Seabream (Sparus aurata) By‐Products and Enhance Fish Oil Quality Parameters

Çavdar

Bilgin

Fadı́loğlu

et al. 2023

Euro J Lipid Sci & Tech

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This research aimed to analyze ultrasound (UAE) and microwave-assisted extraction (MAE) as novel technologies for utilizing gilthead seabream (Sparus aurata) by-products to produce high-quality fish oil for human consumption. The impacts of extraction parameters, namely, temperature, time, solvent-to-solid ratio, and their interactions on the extraction yield, are investigated using response surface methodology (RSM), and a central composite rotatable design. The optimized conditions are 15.47 mL g −1 of solvent-to-solid ratio, 38 min, and 42 °C for UAE and 15.84 mL g −1 of solvent-to-solid ratio, 18 min, and 40 °C for MAE. Under optimal conditions, the maximum extraction yields are 38.40 and 36.70% (g/g) for UAE and MAE, respectively. Both UAE and MAE have significantly higher mass transfer rates (61.70 and 121.58 g h −1 , respectively) than Soxhlet extraction (10.78 g h −1 ). The fatty acid composition, physicochemical, and oxidation analyses of fish oils confirm the suitability of both UAE and MAE for the recovery of high-quality oils from fish processing by-products. The valorized oils mainly include unsaturated fatty acids (≈75%) and are rich in oleic acid. Furthermore, scanning electron microscopy analysis reveals that the key driving force for fast oil extraction is the structural degradation of fish by-products caused by ultrasound and microwave. Practical Applications: Due to environmental and economic viewpoints, the validation of fish oil from fish industry by-products has become a popular research topic recently. Alternative recovery techniques such as ultrasound-(UAE) and microwave-assisted extraction (MAE) protocols may have additional benefits in producing functional oils. Interactive effects of process parameters determine the success of the extraction technique; therefore optimization is a critical approach when applying the extraction protocols. This study shows that UAE and MAE techniques significantly enhanced oil extraction rate from gilthead seabream (Sparus aurota) by-products at lower temperatures and by using lower amounts of solvent. UVA and MAE increase oxidative stability and do not change the fatty acid composition. Hence, the by-product of the gilthead seabream can be a sustainable and food-grade fish oil source and UAE and MAE can be a good alternative to the conventional (Soxhlet) extraction by providing high yield and quality oil.

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Section: Resultsmentioning

confidence: 99%

Section: Fatty Acid Compositionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

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Ultrasound‐ and Microwave‐Assisted Extractions Facilitate Oil Recovery from Gilthead Seabream (Sparus aurata) By‐Products and Enhance Fish Oil Quality Parameters

Çavdar

Bilgin

Fadı́loğlu

et al. 2023

Euro J Lipid Sci & Tech

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“…However, data are still very limited, and only few of the published studies have used next generation sequencing (NGS) approaches. Considering the increasing awareness for reducing consumption and introducing circular economy in livestock production, the hydrolysis of waste products has gained much attention [104], and more studies are expected in the short coming future.…”

Section: Impacts Of Alternative Protein Sources On Fish Microbiotamentioning

confidence: 99%

Alternative Proteins for Fish Diets: Implications beyond Growth

Aragão

Gonçalves

Costas

et al. 2022

Animals

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Aquaculture has been challenged to find alternative ingredients to develop innovative feed formulations that foster a sustainable future growth. Given the most recent trends in fish feed formulation on the use of alternative protein sources to decrease the dependency of fishmeal, it is fundamental to evaluate the implications of this new paradigm for fish health and welfare. This work intends to comprehensively review the impacts of alternative and novel dietary protein sources on fish gut microbiota and health, stress and immune responses, disease resistance, and antioxidant capacity. The research results indicate that alternative protein sources, such as terrestrial plant proteins, rendered animal by-products, insect meals, micro- and macroalgae, and single cell proteins (e.g., yeasts), may negatively impact gut microbiota and health, thus affecting immune and stress responses. Nevertheless, some of the novel protein sources, such as insects and algae meals, have functional properties and may exert an immunostimulatory activity. Further research on the effects of novel protein sources, beyond growth, is clearly needed. The information gathered here is of utmost importance, in order to develop innovative diets that guarantee the production of healthy fish with high quality standards and optimised welfare conditions, thus contributing to a sustainable growth of the aquaculture industry.

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“…Waste valorization, as a mitigation approach, has a positive impact on climate change, which is mainly attributable to the reduction in GHG emissions due to recycling and waste minimization as well as energy recovery from the waste ( 7 ). Several studies indicated that fisheries and aquaculture wastes can be considered as potential sources of biomolecules including enzymes, functional proteins, bioactive peptides, omega-3 rich oils and polysaccharides such as chitin ( 8 – 12 ). Current industrial processes for the extraction of these biomolecules are unsustainable as they are heavily based on the use of harsh chemical treatments and/or costly enzymatic reactions which consume significant amounts of water and energy and generate large volumes of effluent that needs treatment before discharge ( 13 , 14 ).…”

Section: Introductionmentioning

confidence: 99%

Sustainable Upcycling of Fisheries and Aquaculture Wastes Using Fish-Derived Cold-Adapted Proteases

Khiari

2022

Front. Nutr.

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The fisheries and aquaculture industries are some of the major economic sectors in the world. However, these industries generate significant amounts of wastes that need to be properly managed to avoid serious health and environmental issues. Recent advances in marine waste valorization indicate that fish waste biomass represents an abundant source of high-value biomolecules including enzymes, functional proteins, bioactive peptides, and omega-3 rich oils. Enzyme-assisted processes, for the recovery of these value-added biomolecules, have gained interest over chemical-based processes due to their cost-effectiveness as well as their green and eco-friendly aspects. Currently, the majority of commercially available proteases that are used to recover value-added compounds from fisheries and aquaculture wastes are mesophilic and/or thermophilic that require significant energy input and can lead to unfavorable reactions (i.e., oxidation). Cold-adapted proteases extracted from cold-water fish species, on the other hand, are active at low temperatures but unstable at higher temperatures which makes them interesting from both environmental and economic points of view by upcycling fish waste as well as by offering substantial energy savings. This review provides a general overview of cold-adapted proteolytic enzymes from cold-water fish species and highlights the opportunities they offer in the valorization of fisheries and aquaculture wastes.

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Sustainable Fish and Seafood Production and Processing

Cited by 21 publications

References 141 publications

Ultrasound‐ and Microwave‐Assisted Extractions Facilitate Oil Recovery from Gilthead Seabream (Sparus aurata) By‐Products and Enhance Fish Oil Quality Parameters

Ultrasound‐ and Microwave‐Assisted Extractions Facilitate Oil Recovery from Gilthead Seabream (Sparus aurata) By‐Products and Enhance Fish Oil Quality Parameters

Alternative Proteins for Fish Diets: Implications beyond Growth

Sustainable Upcycling of Fisheries and Aquaculture Wastes Using Fish-Derived Cold-Adapted Proteases

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