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Hofmann LC, Strauss S, Shpigel M, Guttman L, Stengel DB, Rebours C, Gjorgovska N, Turan G, Balina K, Zammit G, Adams JMM, Ahsan U, Bartolo AG, Bolton JJ, Domingues R, Dürrani Ö, Eroldogan OT, Freitas A, Golberg A, Kremer KI, Marques F, Milia M, Steinhagen S, Sucu E, Vargas-Murga L, Zemah-Shamir S, Zemah-Shamir Z, Meléndez-Martínez AJ. The green seaweed Ulva: tomorrow's "wheat of the sea" in foods, feeds, nutrition, and biomaterials. Crit Rev Food Sci Nutr 2024:1-36. [PMID: 38979936 DOI: 10.1080/10408398.2024.2370489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Ulva, a genus of green macroalgae commonly known as sea lettuce, has long been recognized for its nutritional benefits for food and feed. As the demand for sustainable food and feed sources continues to grow, so does the interest in alternative, plant-based protein sources. With its abundance along coastal waters and high protein content, Ulva spp. have emerged as promising candidates. While the use of Ulva in food and feed has its challenges, the utilization of Ulva in other industries, including in biomaterials, biostimulants, and biorefineries, has been growing. This review aims to provide a comprehensive overview of the current status, challenges and opportunities associated with using Ulva in food, feed, and beyond. Drawing on the expertise of leading researchers and industry professionals, it explores the latest knowledge on Ulva's nutritional value, processing methods, and potential benefits for human nutrition, aquaculture feeds, terrestrial feeds, biomaterials, biostimulants and biorefineries. In addition, it examines the economic feasibility of incorporating Ulva into aquafeed. Through its comprehensive and insightful analysis, including a critical review of the challenges and future research needs, this review will be a valuable resource for anyone interested in sustainable aquaculture and Ulva's role in food, feed, biomaterials, biostimulants and beyond.
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Affiliation(s)
- Laurie C Hofmann
- Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven, Germany
- Bremerhaven University of Applied Sciences, Bremerhaven, Germany
| | | | - Muki Shpigel
- Morris Kahn Marine Research Station, The Leon H. Charney School of Marine Sciences, University of Haifa, Haifa, Israel
| | - Lior Guttman
- The National Center for Mariculture, Israel Oceanographic & Limnological Research, Eilat, Israel
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Dagmar B Stengel
- Botany and Plant Science, School of Natural Sciences, University of Galway, Galway, Ireland
| | | | - Natasha Gjorgovska
- Institute of Animal Science and Fishery, University Ss Ciril and Methodius in Skopje, Skopje, North Macedonia
| | - Gamze Turan
- Aquaculture Department, Fisheries Faculty, Ege University, Bornova, Izmir, Türkiye
| | - Karina Balina
- Institute of Microbiology and Biotechnology, University of Latvia, Riga, Latvia
- Institute of Science and Innovative Technologies, Liepaja University, Liepaja, Latvia
| | - Gabrielle Zammit
- Department of Biology, Faculty of Science, University of Malta, Msida, Malta
| | - Jessica M M Adams
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Aberystwyth, UK
| | - Umair Ahsan
- Department of Plant and Animal Production, Burdur Vocational School of Food, Agriculture and Livestock, Burdur Mehmet Akif Ersoy University, Burdur, Turkiye
- Center for Agriculture, Livestock and Food Research, Burdur Mehmet Akif Ersoy University, Burdur, Turkiye
| | | | - John J Bolton
- Department of Biological Sciences, University of Cape Town, Rondebosch, South Africa
| | - Rosário Domingues
- Department of Chemistry, Lipidomics Laboratory, Mass Spectrometry Centre, University of Aveiro, Santiago University Campus, Aveiro, Portugal
- Department of Chemistry, CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Santiago University Campus, Aveiro, Portugal
| | - Ömerhan Dürrani
- Department of Fisheries Technology Engineering, Faculty of Marine Science, Karadeniz Technical University, Trabzon, Türkiye
| | - Orhan Tufan Eroldogan
- Department of Aquaculture, Faculty of Fisheries, Cukurova University, Adana, Türkiye
- Biotechnology Research and Application Center, Cukurova University, Adana, Türkiye
| | - Andreia Freitas
- National Institute for Agricultural and Veterinary Research (INIAV), Rua dos Lágidos, Lugar da Madalena, Vila do Conde, Portugal
- REQUIMTE/LAQV, R. D. Manuel II, Oporto, Portugal
| | - Alexander Golberg
- Department of Environmental Studies, Faculty of Exact Sciences, Porter School of Environment and Earth Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Kira I Kremer
- Marine Biology, University of Bremen, Bremen, Germany
| | - Francisca Marques
- Department of Chemistry, Lipidomics Laboratory, Mass Spectrometry Centre, University of Aveiro, Santiago University Campus, Aveiro, Portugal
- Department of Chemistry, CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Santiago University Campus, Aveiro, Portugal
| | - Massimo Milia
- Department of Life and Environmental Science, University of Cagliari, Cagliari, Italy
| | - Sophie Steinhagen
- Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, Strömstad, Sweden
| | - Ekin Sucu
- Department of Animal Science, Agricultural Faculty, Bursa Uludag University, Bursa, Turkey
| | - Liliana Vargas-Murga
- Department of Chemical and Agricultural Engineering and Agrifood Technology, Polytechnic School, Universitat de Girona, Girona, Spain
| | - Shiri Zemah-Shamir
- School of Sustainability, Reichman University (IDC Herzliya), Herzliya, Israel
| | - Ziv Zemah-Shamir
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Haifa, Israel
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Ballance S, Rieder A, Arlov Ø, Knutsen SH. Brown seaweed as a food ingredient contributing to an adequate but not excessive amount of iodine in the European diet. A case study with bread. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024. [PMID: 38962938 DOI: 10.1002/jsfa.13716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 07/05/2024]
Abstract
BACKGROUND The large amounts of iodine in brown seaweeds may contribute towards an adequate iodine intake, but also pose a food safety risk. In the current work we estimate the maximum amount of the cultivated brown seaweeds Saccharina latissima and Alaria esculenta (blanched and non-blanched) that can be added to white loaf-type wheat-bread so European consumers are protected against excessive chronic intakes. We use data for high-level consumers of bread with special ingredients added from the EFSA comprehensive European food consumption database to construct a conservative risk management model. We bake prototype seaweed bread and use the output from the model to assess exposure to iodine and trace metals. We also assess some bread quality parameters such as sensory characteristics, crumb firmness and specific volume. RESULTS The maximum level of iodine in bread that would mitigate the European consumer from excess intakes was 857 μg I kg-1 bread. Assuming a typical 60% wheat flour per kilogram of bread, a maximum amount of 11.3 g of dried blanched A. esculenta (115 mg I kg-1 dry weight) could be incorporated per kilogram of wheat flour into the bread recipe whilst for non-blanched S. latissima, which contained 3500 mg I kg-1 dry weight, only a minuscule 350 mg of seaweed was the limit. For prototype breads, seaweed addition had no significant impact on the specific volume and crumb firmness. Levels of cadmium and arsenic in the bread were also of low toxicological concern. CONCLUSION A maximum 1-2% brown seaweed of total flour weight could be added to bread to contribute towards European consumers' adequate iodine intake without overexposure. © 2024 The Author(s). Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Simon Ballance
- Nofima AS, Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway
| | - Anne Rieder
- Nofima AS, Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway
| | | | - Svein Halvor Knutsen
- Nofima AS, Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway
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Saravana PS, Ummat V, Bourke P, Tiwari BK. Emerging green cell disruption techniques to obtain valuable compounds from macro and microalgae: a review. Crit Rev Biotechnol 2023; 43:904-919. [PMID: 35786238 DOI: 10.1080/07388551.2022.2089869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 05/06/2022] [Accepted: 05/18/2022] [Indexed: 11/03/2022]
Abstract
In the modern era, macro-microalgae attract a strong interest across scientific disciplines, owing to the wide application of these cost-effective valuable bioresources in food, fuel, nutraceuticals, and pharmaceuticals etc. The practice of eco-friendly extraction techniques has led scientists to create alternative processes to the conventional methods, to enhance the extraction of the key valuable compounds from macro-microalgae. This review narrates the possible use of novel cell disruption techniques, including use of ionic liquid, deep eutectic solvent, surfactant, switchable solvents, high voltage electrical discharge, explosive decompression, compressional-puffing, plasma, and ozonation, which can enable the recovery of value added substances from macro-microalgae, complying with the principles of green chemistry and sustainability. The above-mentioned innovative techniques are reviewed with respect to their working principles, benefits, and possible applications for macro-microalgae bioactive compound recovery and biofuel. The benefits of these techniques compared to conventional extraction methods include shorter extraction time, improved yield, and reduced cost. Furthermore, various combinations of these innovative technologies are used for the extraction of thermolabile bioactive compounds. The challenges and prospects of the innovative extraction processes for the forthcoming improvement of environmentally and cost-effective macro-microalgal biorefineries are also explained in this review.
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Affiliation(s)
- Periaswamy Sivagnanam Saravana
- Department of Food Chemistry and Technology, Teagasc Food Research Centre, Dublin, Ireland
- School of Biosystems and Food Engineering, University College Dublin, Dublin, Ireland
| | - Viruja Ummat
- Department of Food Chemistry and Technology, Teagasc Food Research Centre, Dublin, Ireland
- School of Biosystems and Food Engineering, University College Dublin, Dublin, Ireland
| | - Paula Bourke
- School of Biosystems and Food Engineering, University College Dublin, Dublin, Ireland
| | - Brijesh K Tiwari
- Department of Food Chemistry and Technology, Teagasc Food Research Centre, Dublin, Ireland
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Nepper-Davidsen J, Glasson CRK, Lawton RJ, Magnusson M. High spatial and temporal variation in biomass composition of the novel aquaculture target Ecklonia radiata. JOURNAL OF APPLIED PHYCOLOGY 2023; 35:1-14. [PMID: 37360290 PMCID: PMC10144899 DOI: 10.1007/s10811-023-02969-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/28/2023] [Accepted: 04/01/2023] [Indexed: 06/28/2023]
Abstract
The biomass composition of kelp varies within species both spatially and temporally. However, this variation in biomass quality has not yet been investigated for the native kelp Ecklonia radiata within New Zealand, where the kelp is a target for the emerging seaweed aquaculture industry. In this study we quantified spatial and temporal variation in the composition of E. radiata biomass, collected from 12 sites around the North Island of New Zealand and from 12 months across a full year at a single site (n = 138). High spatial variation was detected for most components, including alginate (range: 16.6 - 22.7% DW, n = 12), fucoidan (range: 1.2 - 1.6% DW, n = 12), phlorotannins (range: 4.8 - 9.3% DW, n = 72), and glucose (range: 9.3 - 22.6% DW, n = 12). The biomass composition of E. radiata varied significantly among sites but with no clear patterns among regions, indicating that geographic differences were mostly local rather than regional, possibly due to site-specific environmental conditions. Significant temporal variation (measured by positive autocorrelation between months) was detected in the content of lipids, proteins, glucose, guluronic acid, nitrogen, phosphorous, iodine, arsenic, and mercury, and for the mannuronic to guluronic acid (M:G) ratio. Overall, E. radiata had comparable biomass composition to that of commercially grown northern hemisphere species but with substantially higher phlorotannin content. These results demonstrate that E. radiata could be a viable southern hemisphere alternative for a broad range of commercial applications. Supplementary Information The online version contains supplementary material available at 10.1007/s10811-023-02969-2.
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Affiliation(s)
- Jacob Nepper-Davidsen
- Coastal Marine Field Station, School of Science, University of Waikato, Tauranga, New Zealand
- Environmental Research Institute, The University of Waikato, Tauranga, New Zealand
| | - Christopher R. K. Glasson
- Coastal Marine Field Station, School of Science, University of Waikato, Tauranga, New Zealand
- Environmental Research Institute, The University of Waikato, Tauranga, New Zealand
| | - Rebecca J. Lawton
- Coastal Marine Field Station, School of Science, University of Waikato, Tauranga, New Zealand
- Environmental Research Institute, The University of Waikato, Tauranga, New Zealand
| | - Marie Magnusson
- Coastal Marine Field Station, School of Science, University of Waikato, Tauranga, New Zealand
- Environmental Research Institute, The University of Waikato, Tauranga, New Zealand
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Lafeuille B, Tamigneaux É, Berger K, Provencher V, Beaulieu L. Variation of the Nutritional Composition and Bioactive Potential in Edible Macroalga Saccharina latissima Cultivated from Atlantic Canada Subjected to Different Growth and Processing Conditions. Foods 2023; 12:foods12081736. [PMID: 37107531 PMCID: PMC10137355 DOI: 10.3390/foods12081736] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/12/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023] Open
Abstract
Macroalgae are a new food source in the Western world. The purpose of this study was to evaluate the impact of harvest months and food processing on cultivated Saccharina latissima (S. latissima) from Quebec. Seaweeds were harvested in May and June 2019 and processed by blanching, steaming, and drying with a frozen control condition. The chemical (lipids, proteins, ash, carbohydrates, fibers) and mineral (I, K, Na, Ca, Mg, Fe) compositions, the potential bioactive compounds (alginates, fucoidans, laminarans, carotenoids, polyphenols) and in vitro antioxidant potential were investigated. The results showed that May specimens were significantly the richest in proteins, ash, I, Fe, and carotenoids, while June macroalgae contained more carbohydrates. The antioxidant potential of water-soluble extracts (Oxygen Radical Absorbance Capacity [ORAC] analysis-625 µg/mL) showed the highest potential in June samples. Interactions between harvested months and processing were demonstrated. The drying process applied in May specimens appeared to preserve more S. latissima quality, whereas blanching and steaming resulted in a leaching of minerals. Losses of carotenoids and polyphenols were observed with heating treatments. Water-soluble extracts of dried May samples showed the highest antioxidant potential (ORAC analysis) compared to other methods. Thus, the drying process used to treat S. latissima harvested in May seems to be the best that should be selected.
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Affiliation(s)
- Bétina Lafeuille
- Département de Science des Aliments, Faculté des Sciences de l'Agriculture et de l'Alimentation (FSAA), Université Laval, Québec, QC G1V 0A6, Canada
- Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Québec, QC G1V 0A6, Canada
- Centre Nutrition, Santé et Société (NUTRISS), Université Laval, Québec, QC G1V 0A6, Canada
| | - Éric Tamigneaux
- Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Québec, QC G1V 0A6, Canada
- École des Pêches et de L'aquaculture du Québec, Cégep de la Gaspésie et des Îles, Québec, QC G0C 1V0, Canada
- Merinov, Grande-Rivière, QC G0C 1V0, Canada
| | | | - Véronique Provencher
- Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Québec, QC G1V 0A6, Canada
- Centre Nutrition, Santé et Société (NUTRISS), Université Laval, Québec, QC G1V 0A6, Canada
- École de Nutrition, Faculté des Sciences de l'Agriculture et de l'Alimentation (FSAA), Université Laval, Québec, QC G1V 0A6, Canada
| | - Lucie Beaulieu
- Département de Science des Aliments, Faculté des Sciences de l'Agriculture et de l'Alimentation (FSAA), Université Laval, Québec, QC G1V 0A6, Canada
- Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Québec, QC G1V 0A6, Canada
- Québec-Océan, Université Laval, Québec, QC G1V 0A6, Canada
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Trigo JP, Stedt K, Schmidt AEM, Kollander B, Edlund U, Nylund G, Pavia H, Abdollahi M, Undeland I. Mild blanching prior to pH-shift processing of Saccharina latissima retains protein extraction yields and amino acid levels of extracts while minimizing iodine content. Food Chem 2023; 404:134576. [PMID: 36265271 DOI: 10.1016/j.foodchem.2022.134576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 10/05/2022] [Accepted: 10/08/2022] [Indexed: 11/05/2022]
Abstract
The seaweed Saccharina latissima is often blanched to lower iodine levels, however, it is not known how blanching affects protein extraction. We assessed the effect of blanching or soaking (80/45/12 °C, 2 min) on protein yield and protein extract characteristics after pH-shift processing of S. latissima. Average protein yields and extract amino acid levels ranked treatments as follows: blanching-45 °C ∼ control > soaking ∼ blanching-80 °C. Although blanching-45 °C decreased protein solubilization yield at pH 12, it increased isoelectric protein precipitation yield at pH 2 (p < 0.05). The former could be explained by a higher ratio of large peptides/proteins in the blanched biomass as shown by HP-SEC, whereas the latter by blanching-induced lowering of ionic strength, as verified by a dialysis model. Moreover, blanching-45 °C yielded a protein extract with 49 % less iodine compared with the control extract. We recommend blanching-45 °C since it is effective at removing iodine and does not compromise total protein extraction yield.
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Affiliation(s)
- João P Trigo
- Department of Biology and Biological Engineering - Food and Nutrition Science, Chalmers University of Technology, SE 412 96 Gothenburg, Sweden.
| | - Kristoffer Stedt
- Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Strömstad, Sweden
| | - Alina E M Schmidt
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE 100 44 Stockholm, Sweden
| | - Barbro Kollander
- Livsmedelsverket - Swedish Food Agency, Dag Hammarskjölds väg 56 A, Uppsala, Sweden
| | - Ulrica Edlund
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE 100 44 Stockholm, Sweden
| | - Göran Nylund
- Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Strömstad, Sweden
| | - Henrik Pavia
- Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Strömstad, Sweden
| | - Mehdi Abdollahi
- Department of Biology and Biological Engineering - Food and Nutrition Science, Chalmers University of Technology, SE 412 96 Gothenburg, Sweden
| | - Ingrid Undeland
- Department of Biology and Biological Engineering - Food and Nutrition Science, Chalmers University of Technology, SE 412 96 Gothenburg, Sweden.
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Biomolecules from Macroalgae-Nutritional Profile and Bioactives for Novel Food Product Development. Biomolecules 2023; 13:biom13020386. [PMID: 36830755 PMCID: PMC9953460 DOI: 10.3390/biom13020386] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/15/2022] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
Seaweed is in the spotlight as a promising source of nutrition for humans as the search for sustainable food production systems continues. Seaweed has a well-documented rich nutritional profile containing compounds such as polyphenols, carotenoids and polysaccharides as well as proteins, fatty acids and minerals. Seaweed processing for the extraction of functional ingredients such as alginate, agar, and carrageenan is well-established. Novel pretreatments such as ultrasound assisted extraction or high-pressure processing can be incorporated to more efficiently extract these targeted ingredients. The scope of products that can be created using seaweed are wide ranging: from bread and noodles to yoghurt and milk and even as an ingredient to enhance the nutritional profile and stability of meat products. There are opportunities for food producers in this area to develop novel food products using seaweed. This review paper discusses the unique properties of seaweed as a food, the processes involved in seaweed aquaculture, and the products that can be developed from this marine biomass. Challenges facing the industry such as consumer hesitation around seaweed products, the safety of seaweed, and processing hurdles will also be discussed.
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Dujardin B, Ferreira de Sousa R, Gómez Ruiz JÁ. Dietary exposure to heavy metals and iodine intake via consumption of seaweeds and halophytes in the European population. EFSA J 2023; 21:e07798. [PMID: 36742462 PMCID: PMC9887633 DOI: 10.2903/j.efsa.2023.7798] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
EFSA assessed the relevance of seaweed and halophyte consumption to the dietary exposure to heavy metals (arsenic, cadmium, lead and mercury) and the iodine intake in the European population. Based on sampling years 2011-2021, there were 2,093 analytical data available on cadmium, 1,988 on lead, 1,934 on total arsenic, 920 on inorganic arsenic (iAs), 1,499 on total mercury and 1,002 on iodine. A total of 697 eating occasions on halophytes, seaweeds and seaweed-related products were identified in the EFSA Comprehensive European Food Consumption Database (468 subjects, 19 European countries). From seaweed consumption, exposure estimates for cadmium in adult 'consumers only' are within the range of previous exposure estimates considering the whole diet, while for iAs and lead the exposure estimates represent between 10% and 30% of previous exposures from the whole diet for the adult population. Seaweeds were also identified as important sources of total arsenic that mainly refers, with some exceptions, to organic arsenic. As regards iodine, from seaweed consumption, mean intakes above 20 μg/kg body weight per day were identified among 'consumers only' of Kombu and Laver algae. The impact of a future increase in seaweed consumption ('per capita') on the dietary exposure to heavy metals and on iodine intake will strongly depend on the seaweeds consumed. The exposure estimates of heavy metals and iodine intakes in 'consumers only' of seaweeds were similar to those estimated in a replacement scenario with selected seaweed-based foods in the whole population. These results underline the relevance of the current consumption of seaweeds in the overall exposure to different heavy metals and in the intake of iodine. Recommendations are provided for further work needed on different areas to better understand the relationship between seaweed consumption and exposure to heavy metals and iodine intake.
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On the use of pulsed electric field technology as a pretreatment to reduce the content of potentially toxic elements in dried Saccharina latissima. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Aasen IM, Sandbakken IS, Toldnes B, Roleda MY, Slizyte R. Enrichment of the protein content of the macroalgae Saccharina latissima and Palmaria palmata. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Blikra MJ, Henjum S, Aakre I. Iodine from brown algae in human nutrition, with an emphasis on bioaccessibility, bioavailability, chemistry, and effects of processing: A systematic review. Compr Rev Food Sci Food Saf 2022; 21:1517-1536. [PMID: 35233943 DOI: 10.1111/1541-4337.12918] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 01/03/2022] [Accepted: 01/04/2022] [Indexed: 11/29/2022]
Abstract
Brown algae are becoming increasingly popular as a food source and dietary supplement in Europe and other Western countries. As they are highly rich in iodine, they represent a potential new dietary iodine source. Iodine deficiency has been re-emerging in Europe, and it is important to ensure adequate intake through one's diet. However, macroalgae, and especially brown algae, may contain very high amounts of iodine, and both iodine deficiency and excessive iodine may increase the risk of negative health effects. The iodine content of algae or foods containing algae is currently not regulated in the European Union. The aim of this paper is to review the literature to determine the chemical species of iodine in brown algae, the loss of iodine during processing, and the bioavailability and bioaccessibility of iodine. A systematic search of the literature was performed in April 2021, via the databases Web of Science and PubMed. The review includes studies of iodine in brown macroalgae in relation to bioavailability, bioaccessibility, processing and speciation. A meta-analysis was conducted in relation to the following topics: (i) the correlation between total iodine and iodide (I- ) content in brown algae; (ii) the correlation between the loss of iodine during processing and the I- content; and (iii) the correlation between bioavailability and the I- content. The bioavailability of iodine from brown algae was generally high, with in vivo bioavailability ranging from 31% to 90%. The in vitro bioavailability of iodine (2%-28%) was systematically lower than in vivo bioavailability (31%-90%), indicating an inadequate in vitro methodology. Processing may reduce the iodine content of brown algae, and a higher I- content was positively correlated with increased iodine loss during processing. Although processing strategies may reduce the iodine content of brown algae significantly, the iodine content may still be high after processing. These findings may be used in food safety evaluations of brown algae as well as in the development of macroalgae-containing foods with iodine contents suitable for human consumption. Further research on processing techniques to reduce the iodine content in brown macroalgae are warranted.
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Affiliation(s)
| | - Sigrun Henjum
- Department of Nursing and Health Promotion, Oslo Metropolitan University (OsloMet), Oslo, Norway
| | - Inger Aakre
- Department of Seafood and Nutrition, Institute of Marine Research, Bergen, Norway
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Rodríguez-González I, Díaz-Reinoso B, Domínguez H. Intensification Strategies for the Extraction of Polyunsaturated Fatty Acids and Other Lipophilic Fractions From Seaweeds. FOOD BIOPROCESS TECH 2022. [DOI: 10.1007/s11947-021-02757-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Blikra MJ, Altintzoglou T, Løvdal T, Rognså G, Skipnes D, Skåra T, Sivertsvik M, Noriega Fernández E. Seaweed products for the future: Using current tools to develop a sustainable food industry. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.11.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Chauton MS, Forbord S, Mäkinen S, Sarno A, Slizyte R, Mozuraityte R, Standal IB, Skjermo J. Sustainable resource production for manufacturing bioactives from micro- and macroalgae: Examples from harvesting and cultivation in the Nordic region. PHYSIOLOGIA PLANTARUM 2021; 173:495-506. [PMID: 33751623 DOI: 10.1111/ppl.13391] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 02/17/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
Micro- and macroalgae are a great and important source of raw material for manufacturing of bioactives and ingredients for food, feed, cosmetics, or pharmaceuticals. Macroalgae (or seaweeds) have been harvested locally from wild stocks in smaller volumes for a long time, and a production chain based on cultivated seaweed for the harvest of considerably larger amounts is in progress for several species. Microalgae and cyanobacteria such as Spirulina have been produced in "backyard ponds" for use in food and feed also for a long time, and now we see the establishment of large production plants to control the cultivation process and increase the production yields. There is also a shift from harvesting or cultivation centered in warmer, sunnier areas to increasing exploitation of natural resources in temperate to boreal regions. In locations with strong seasonal variations in solar irradiance and temperatures, we need to develop procedures to maximize the biomass production in the productive seasons and ensure efficient stabilization of the biomass for year-round processing and product manufacturing. Industrialized biomass production and large-scale manufacturing of bioactives also mean that we must employ sustainable, cost-effective, and environmentally friendly processing methods, including stabilization and extraction methods such as ensiling and subcritical water extraction (SWE) and advanced analytic tools to characterize the products. These topics are focus areas of the Nordic Centre of Excellence (NCoE) NordAqua, and here we present a review of current activities in the field of micro- and macroalgae biomass production sectors illustrated with some of our experiences from the NordAqua consortium.
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Affiliation(s)
| | - Silje Forbord
- Department of Fisheries and New Biomarine Industry, SINTEF Ocean, Trondheim, Norway
| | - Sari Mäkinen
- LUKE, Natural Resources Institute Finland, Jokioinen, Finland
| | - Antonio Sarno
- Department of Fisheries and New Biomarine Industry, SINTEF Ocean, Trondheim, Norway
| | - Rasa Slizyte
- Department of Fisheries and New Biomarine Industry, SINTEF Ocean, Trondheim, Norway
| | - Revilija Mozuraityte
- Department of Fisheries and New Biomarine Industry, SINTEF Ocean, Trondheim, Norway
| | - Inger Beate Standal
- Department of Fisheries and New Biomarine Industry, SINTEF Ocean, Trondheim, Norway
| | - Jorunn Skjermo
- Department of Fisheries and New Biomarine Industry, SINTEF Ocean, Trondheim, Norway
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Akomea-Frempong S, Skonberg DI, Camire ME, Perry JJ. Impact of Blanching, Freezing, and Fermentation on Physicochemical, Microbial, and Sensory Quality of Sugar Kelp ( Saccharina latissima). Foods 2021; 10:foods10102258. [PMID: 34681308 PMCID: PMC8535061 DOI: 10.3390/foods10102258] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/17/2021] [Accepted: 09/19/2021] [Indexed: 11/16/2022] Open
Abstract
Low seaweed consumption in the West is due to lack of availability and consumer familiarity. In this study, the effects of preservation processes on quality aspects of Saccharina latissima products were assessed. First, a blanching (100 °C for 1 or 3 min) treatment was used to produce seaweed salad. In a second study, effects of blanching, freezing, and fermentation on kelp quality were assessed and processed kelp was used to produce sauerkraut. Blanching significantly decreased (p ≤ 0.05) the instrumental kelp a* value and firmness. The a* value negatively correlated with overall liking of salads. To prepare sauerkraut, raw, raw/frozen (-20 °C), blanched (100 °C, 1 min), or blanched/frozen kelp were mixed with cabbage, salted, inoculated with starter cultures and fermented. Inconsistent trends in L* values, firmness, and fungi enumeration were observed after fermentation. Consumers evaluated kelp salad (n = 100) and sauerkraut (n = 80) for acceptability. Blanched kelp salad had higher hedonic scores than raw kelp salad. A 100% cabbage sauerkraut control and blanched kelp/cabbage blends were compared; kelp blends were similar to control for appearance, color, and texture but were lower for overall acceptability. Results suggest improved quality and enhanced consumer acceptability of seaweed products with use of minimal processing.
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Effects of Heat Treatment Processes: Health Benefits and Risks to the Consumer. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11188740] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Macroalgae are a biological group that has mainly been used in Asian countries; however, the interest shown by Western society is recent, its application in the industrial sector having increased in the last few decades. Seaweeds are filled with properties which are beneficial to our health. To use them as food and enhance these properties, heat has been used on them. This process alters the bioactive compounds. If we study the levels of moisture, they can vary according to the drying methods used. High values of moisture can lead to a short shelf life due to oxidation, microbial or enzyme activity, so controlling these values is highly recommended. Heat causes enzymatic activity as well as oxidation, which leads to degradation of phenolic compounds in comparison with freeze-drying, which causes fewer losses of these components. Due to the same occurrences, lipid content can also vary, modifying the bioactive compounds and their benefits. Pigments are some of the components most affected by heat, since, through this process, seaweeds or seaweed products can suffer a change in color. Iodine in macroalgae can decrease drastically; on the other hand, protein yield can be greatly enhanced. Some studies showed that the amount of arsenic in raw seaweeds was higher than when they were heat processed, and that arsenic values varied when different heat treatments were applied. Additionally, another study showed that heat can alter protein yield in specific species and have a different effect on other species.
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Correia H, Soares C, Morais S, Pinto E, Marques A, Nunes ML, Almeida A, Delerue-Matos C. Seaweeds rehydration and boiling: Impact on iodine, sodium, potassium, selenium, and total arsenic contents and health benefits for consumption. Food Chem Toxicol 2021; 155:112385. [PMID: 34237393 DOI: 10.1016/j.fct.2021.112385] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/30/2021] [Accepted: 07/02/2021] [Indexed: 11/26/2022]
Abstract
Considering the importance of seaweeds for the development of sustainable and innovative food products, this study aimed to characterize the impact of hydrothermal processing on iodine, sodium, potassium, selenium, and arsenic concentrations of four seaweed species (S. latissima, L. digitata, U. pinnatifida, and C. crispus) and on the associated health risks-benefits for consumers. These elements revealed a common pattern for leachable fractions of iodine, total arsenic, and selenium: L. digitata ≥ S. latissima > C. crispus > U. pinnatifida after rehydration and boiling during different periods. The behavior for sodium was: S. latissima > L. digitata > C. crispus > U. pinnatifida, and for potassium: U. pinnatifida > L. digitata > S. latissima > C. crispus. Generally, the species that attained more significant losses were S. latissima and L. digitata. A health-relevant sodium/potassium ratio below 0.7 was found for all species except for U. pinnatifida. In some species, the risk-benefit analysis revealed that high iodine and arsenic levels might promote risks for consumption, even after 20 min boiling, but 5 g of processed U. pinnatifida could contribute to adequate iodine, sodium, potassium, and selenium intakes for all population groups. Standardized processing treatments of seaweeds can open new opportunities for the sector.
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Affiliation(s)
- Helena Correia
- REQUIMTE, LAQV, Instituto Superior de Engenharia Do Porto, Instituto Politécnico Do Porto, R. Dr. António Bernardino de Almeida 431, 4249-015, Porto, Portugal
| | - Cristina Soares
- REQUIMTE, LAQV, Instituto Superior de Engenharia Do Porto, Instituto Politécnico Do Porto, R. Dr. António Bernardino de Almeida 431, 4249-015, Porto, Portugal.
| | - Simone Morais
- REQUIMTE, LAQV, Instituto Superior de Engenharia Do Porto, Instituto Politécnico Do Porto, R. Dr. António Bernardino de Almeida 431, 4249-015, Porto, Portugal
| | - Edgar Pinto
- REQUIMTE, LAQV, Laboratório de Química Aplicada, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade Do Porto, Rua de Jorge de Viterbo Ferreira N. 228, 4050-313, Porto, Portugal; Departamento de Saúde Ambiental, Escola Superior de Saúde, P.Porto. CISA/Centro de Investigação Em Saúde e Ambiente, Rua Dr. António Bernardino de Almeida, 400, 4200-072, Porto, Portugal
| | - António Marques
- CIIMAR: Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros Do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal; IPMA: Divisão de Aquacultura, Valorização e Bioprospeção, I.P., Avenida Doutor Alfredo Magalhães Ramalho 6, 1495-165, Algés, Portugal
| | - Maria Leonor Nunes
- CIIMAR: Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros Do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal
| | - Agostinho Almeida
- REQUIMTE, LAQV, Laboratório de Química Aplicada, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade Do Porto, Rua de Jorge de Viterbo Ferreira N. 228, 4050-313, Porto, Portugal
| | - Cristina Delerue-Matos
- REQUIMTE, LAQV, Instituto Superior de Engenharia Do Porto, Instituto Politécnico Do Porto, R. Dr. António Bernardino de Almeida 431, 4249-015, Porto, Portugal
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Jordbrekk Blikra M, Wang X, James P, Skipnes D. Saccharina latissima Cultivated in Northern Norway: Reduction of Potentially Toxic Elements during Processing in Relation to Cultivation Depth. Foods 2021; 10:foods10061290. [PMID: 34199830 PMCID: PMC8227645 DOI: 10.3390/foods10061290] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 12/16/2022] Open
Abstract
There is an increasing interest in the use of Saccharina latissima (sugar kelp) as food, but the high iodine content in raw sugar kelp limits the daily recommended intake to relatively low levels. Processing strategies for iodine reduction are therefore needed. Boiling may reduce the iodine content effectively, but not predictably, since reductions from 38-94% have been reported. Thus, more information on which factors affect the reduction of iodine are needed. In this paper, sugar kelp cultivated at different depths were rinsed and boiled, to assess the effect of cultivation depth on the removal efficacy of potentially toxic elements (PTEs), especially iodine, cadmium, and arsenic, during processing. Raw kelp cultivated at 9 m contained significantly more iodine than kelp cultivated at 1 m, but the difference disappeared after processing. Furthermore, the content of cadmium and arsenic was not significantly affected by cultivation depth. The average reduction during rinsing and boiling was 85% for iodine and 43% for arsenic, but no significant amount of cadmium, lead, or mercury was removed. Cultivation depths determined the relative effect of processing on the iodine content, with a higher reduction for kelp cultivated at 9 m (87%) compared to 1 m (82%). When not taken into consideration, cultivation depth could mask small reductions in iodine content during rinsing or washing. Furthermore, since the final content of PTEs was not dependent on the cultivation depth, the type and extent of processing determines whether cultivation depth should be considered as a factor in cultivation infrastructure design and implementation, or alternatively, in product segmentation.
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Affiliation(s)
- Marthe Jordbrekk Blikra
- Department of Processing Technology, Seafood Division, Nofima AS, P.O. Box 8034, NO-4068 Stavanger, Norway;
- Correspondence:
| | - Xinxin Wang
- Department of Aquaculture Production, Aquaculture Division, Nofima AS, P.O. Box 6122, NO-9291 Tromsø, Norway; (X.W.); (P.J.)
| | - Philip James
- Department of Aquaculture Production, Aquaculture Division, Nofima AS, P.O. Box 6122, NO-9291 Tromsø, Norway; (X.W.); (P.J.)
| | - Dagbjørn Skipnes
- Department of Processing Technology, Seafood Division, Nofima AS, P.O. Box 8034, NO-4068 Stavanger, Norway;
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Aakre I, Solli DD, Markhus MW, Mæhre HK, Dahl L, Henjum S, Alexander J, Korneliussen PA, Madsen L, Kjellevold M. Commercially available kelp and seaweed products - valuable iodine source or risk of excess intake? Food Nutr Res 2021; 65:7584. [PMID: 33889064 PMCID: PMC8035890 DOI: 10.29219/fnr.v65.7584] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/23/2021] [Accepted: 03/01/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Seaweeds and kelps, also known as macroalgae, have long been common in the East-Asian diet. During recent years, macroalgae have entered the global food market, and a variety of macroalgae products are now available for consumers. Some macroalgae species are known to be particularly rich in iodine, but little data regarding the iodine content of macroalgae-containing foods exists. OBJECTIVE The aim of this research study was to analyse the iodine content in a large variety of commercially available macroalgae-containing foods and supplements and to evaluate whether such products are sources of adequate dietary iodine. DESIGN Ninety-six different products were collected after surveying the Norwegian market for commercially available macroalgae products, collected from three categories: 1) wholefood macroalgae products (n = 43), 2) macroalgae-containing foods (n = 39), and 3) dietary supplements containing macroalgae (n = 14). All products were analysed for iodine content by inductively coupled plasma-mass spectrometry (ICP-MS). RESULTS The iodine content in one portion of wholefood macroalgae products ranged from 128 to 62,400 μg. In macroalgae-containing foods, the iodine content ranged from 30 to 25,300 μg per portion, and in supplements it ranged from 5 to 5,600 μg per daily dose. The species with the highest analysed iodine content were oarweed, sugarkelp and kombu, with mean iodine levels of 7,800, 4,469 and 2,276 μg/g, respectively. For 54 products, the intake of one portion or dose would exceed the tolerable upper intake level (UL) for iodine. DISCUSSION AND CONCLUSION The iodine content in the included products was variable and for most products high, exceeding the tolerable upper intake level (UL) if consumed as a serving or portion size. The labelling of macroalgae species included, and declaration of iodine content, were inadequate or inaccurate for several products. As macroalgae-containing products are unreliable iodine sources, inclusion of such products in the diet may pose a risk of consuming excessive amounts of iodine.
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Affiliation(s)
- Inger Aakre
- Department of Seafood and Nutrition, Institute of Marine Research, NO-5817 Bergen, Norway
| | - Dina Doblaug Solli
- Department of Seafood and Nutrition, Institute of Marine Research, NO-5817 Bergen, Norway
- Department of Clinical Science, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Maria Wik Markhus
- Department of Seafood and Nutrition, Institute of Marine Research, NO-5817 Bergen, Norway
| | - Hanne K. Mæhre
- Nofima, Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway
| | - Lisbeth Dahl
- Department of Seafood and Nutrition, Institute of Marine Research, NO-5817 Bergen, Norway
| | - Sigrun Henjum
- Department of Nursing and Health Promotion, Oslo Metropolitan University (OsloMet), Oslo, Norway
| | - Jan Alexander
- Division of Infection Control, Environment and Health, Norwegian Institute of Public Health, Oslo, Norway
| | | | - Lise Madsen
- Department of Seafood and Nutrition, Institute of Marine Research, NO-5817 Bergen, Norway
- Department of Biology, University of Copenhagen, Copenhagen Ø, Denmark
| | - Marian Kjellevold
- Department of Seafood and Nutrition, Institute of Marine Research, NO-5817 Bergen, Norway
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Noriega-Fernández E, Sone I, Astráin-Redín L, Prabhu L, Sivertsvik M, Álvarez I, Cebrián G. Innovative Ultrasound-Assisted Approaches towards Reduction of Heavy Metals and Iodine in Macroalgal Biomass. Foods 2021; 10:foods10030649. [PMID: 33808536 PMCID: PMC8003320 DOI: 10.3390/foods10030649] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 12/19/2022] Open
Abstract
The aim of this work was to evaluate the potential of ultrasound (US), alone or in combination with mild heating and/or EDTA towards reduction of As, Cd, I, and Hg content of Laminaria hyperborea. Concentrations of As, Cd, I, and Hg of 56.29, 0.596, 7340, and <0.01 mg kg−1 of dry weight, respectively, were found in L. hyperborea blades. Treatment with US at 50 °C increased approx. 2-fold the amount of As released, although did not affect significantly the content of Cd or I, as compared to control (no US) samples. Reducing the temperature to 8 °C significantly decreased the effect of US, but heating at 80 °C did not cause a significant effect as compared to treatments at 50 °C. On the other hand, treatment with 0.1 N EDTA at 50 °C enhanced the percentage of Cd released by approximately 7-fold, regardless of sonication. In the present work, the combination of US and EDTA at 50 °C for 5 min led to a significant reduction of the As (32%), Cd (52%) and I (31%) content in L. hyperborea, thus improving the product’s safety for consumers.
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Affiliation(s)
- Estefanía Noriega-Fernández
- Department of Processing Technology, Nofima, NO-4021 Stavanger, Norway; (I.S.); (L.P.); (M.S.)
- European Food Safety Authority, Via Carlo Magno 1A, 43126 Parma, Italy
- Correspondence: ; Tel.: +47-47706088
| | - Izumi Sone
- Department of Processing Technology, Nofima, NO-4021 Stavanger, Norway; (I.S.); (L.P.); (M.S.)
| | - Leire Astráin-Redín
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón—IA2—(Universidad de Zaragoza-CITA), 50013 Zaragoza, Spain; (L.A.-R.); (I.Á.); (G.C.)
| | - Leena Prabhu
- Department of Processing Technology, Nofima, NO-4021 Stavanger, Norway; (I.S.); (L.P.); (M.S.)
| | - Morten Sivertsvik
- Department of Processing Technology, Nofima, NO-4021 Stavanger, Norway; (I.S.); (L.P.); (M.S.)
| | - Ignacio Álvarez
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón—IA2—(Universidad de Zaragoza-CITA), 50013 Zaragoza, Spain; (L.A.-R.); (I.Á.); (G.C.)
| | - Guillermo Cebrián
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón—IA2—(Universidad de Zaragoza-CITA), 50013 Zaragoza, Spain; (L.A.-R.); (I.Á.); (G.C.)
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Determination of total iodine content in edible seaweeds: Application of inductively coupled plasma-atomic emission spectroscopy. ALGAL RES 2021. [DOI: 10.1016/j.algal.2020.102149] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Boderskov T, Nielsen MM, Rasmussen MB, Balsby TJS, Macleod A, Holdt SL, Sloth JJ, Bruhn A. Effects of seeding method, timing and site selection on the production and quality of sugar kelp, Saccharina latissima: A Danish case study. ALGAL RES 2021. [DOI: 10.1016/j.algal.2020.102160] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Kreissig KJ, Hansen LT, Jensen PE, Wegeberg S, Geertz-Hansen O, Sloth JJ. Characterisation and chemometric evaluation of 17 elements in ten seaweed species from Greenland. PLoS One 2021; 16:e0243672. [PMID: 33556100 PMCID: PMC7869976 DOI: 10.1371/journal.pone.0243672] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/22/2021] [Indexed: 12/26/2022] Open
Abstract
Several Greenland seaweed species have potential as foods or food ingredients, both for local consumption and export. However, knowledge regarding their content of beneficial and deleterious elements on a species specific and geographical basis is lacking. This study investigated the content of 17 elements (As, Ca, Cd, Cr, Cu, Fe, Hg, I, K, Mg, Mn, Na, Ni, P, Pb, Se and Zn) in 77 samples of ten species (Agarum clathratum, Alaria esculenta, Ascophyllum nodosum, Fucus distichus, Fucus vesiculosus, Hedophyllum nigripes, Laminaria solidungula, Palmaria palmata, Saccharina latissima and Saccharina longicruris). Element profiles differed between species but showed similar patterns within the same family. For five species, different thallus parts were investigated separately, and showed different element profiles. A geographic origin comparison of Fucus species indicated regional differences. The seaweeds investigated were especially good sources of macrominerals (K > Na > Ca > Mg) and trace minerals, such as Fe. Iodine contents were high, especially in macroalgae of the family Laminariaceae. None of the samples exceeded the EU maximum levels for Cd, Hg or Pb, but some exceeded the stricter French regulations, especially for Cd and I. In conclusion, these ten species are promising food items.
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Affiliation(s)
| | | | | | - Susse Wegeberg
- DCE - Danish Centre for Environment and Energy / Department of Bioscience, Aarhus University, Roskilde, Denmark
| | | | - Jens J. Sloth
- National Food Institute, Technical University of Denmark, Kgs. Lyngby, Denmark
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Jacobsen C, Holdt SL. Introduction to the Special Issue: "Advance in Recovery and Application of Bioactive Compounds from Seafood". Foods 2021; 10:foods10020266. [PMID: 33525691 PMCID: PMC7912078 DOI: 10.3390/foods10020266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 01/20/2021] [Indexed: 11/24/2022] Open
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