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Moreira-Leite B, Antunes R, Cotas J, Martins N, Costa N, Noronha JP, Mata P, Diniz M. Modified Atmosphere Packaging (MAP) for Seaweed Conservation: Impact on Physicochemical Characteristics and Microbiological Activity. Foods 2023; 12:2736. [PMID: 37509828 PMCID: PMC10379051 DOI: 10.3390/foods12142736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/12/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
Conventional conservation techniques such as drying, salting or freezing do not allow for preserving the original characteristics of seaweeds. The present work aims to study the impact of minimal processing, in particular "Modified Atmosphere Packaging" (MAP), on the physicochemical characteristics and food safety of two seaweed species, "laver" (Porphyra umbilicalis) and "sea-lettuce" (Ulva lactuca), stored at 6 °C for 15 days. Different parameters were evaluated using analytical methods, namely the composition of headspace gases, color, texture, microorganisms, and volatile organic compounds (VOCs). The main findings of this study were that the MAP treatment was able to inhibit the respiration rate of minimally processed seaweeds, also preserving their color and texture. There was a remarkable reduction in the microbial load for P. umbilicalis treated under modified and vacuum atmospheres, and U. lactuca exhibited relatively steady values with no notable differences between the treatments and the control. Therefore, during the 15-day study period, both seaweeds met the requirements for food safety. GC-TOF-MS allowed to conclude that both MAP and vacuum treatments were more efficient in maintaining the odor characteristics of U. lactuca compared to P. umbilicalis with no significant differences throughout the storage days. Metabolic responses to diverse sources of abiotic stress seemed to account for most of the changes observed.
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Affiliation(s)
- Bruno Moreira-Leite
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal
| | - Rafael Antunes
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal
| | - João Cotas
- Department of Life Sciences, Faculty of Science and Technology (FCTUC), Universidade de Coimbra, 3030-790 Coimbra, Portugal
| | - Nuno Martins
- MED-Mediterranean Institute for Agriculture, Environment and Development & CHANGE, Universidade de Évora, Pólo da Mitra, Apartado 94, 7006-554 Évora, Portugal
| | - Nuno Costa
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal
| | - João P Noronha
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal
| | - Paulina Mata
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal
| | - Mário Diniz
- UCIBIO-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2819-516 Caparica, Portugal
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Kasmi Y, Eschbach E, Hanel R. Mare-MAGE curated reference database of fish mitochondrial genes. BMC Genom Data 2023; 24:18. [PMID: 36932341 PMCID: PMC10024356 DOI: 10.1186/s12863-023-01119-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 03/09/2023] [Indexed: 03/19/2023] Open
Abstract
Biodiversity assessment approaches based on molecular biology techniques such as metabarcoding, RAD-seq, or SnaPshot sequencing are increasingly applied in assessing marine and aquatic ecosystems. Here we present a new reference database for fish meta-barcoding based on mitochondrial genes. The Mare-MAGE database contains quality-checked sequences of the mitochondrial 12S ribosomal RNA and Cytochrome c Oxidase I gene. All sequences were obtained from the National Center for Biotechnology Information- GenBank (NBCI-GenBank), the European Nucleotide Archive (ENA), AquaGene Database and BOLD database, and have undergone intensive processing. They were checked for false annotations and non-target anomalies, according to the Integrated Taxonomic Information System (ITIS) and FishBase. The dataset is compiled in ARB-Home, FASTA and Qiime2 formats, and is publicly available from the Mare-MAGE database website ( http://mare-mage.weebly.com/ ). It includes altogether 231,333 COI and 12S rRNA gene sequences of fish, covering 19,506 species of 4,058 genera and 586 families.
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Affiliation(s)
- Yassine Kasmi
- Thünen Institute of Fisheries Ecology, Herwigstraße 31, 27572, Bremerhaven, Germany.
| | - Erik Eschbach
- Thünen Institute of Fisheries Ecology, Herwigstraße 31, 27572, Bremerhaven, Germany
| | - Reinhold Hanel
- Thünen Institute of Fisheries Ecology, Herwigstraße 31, 27572, Bremerhaven, Germany
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Bedford J, Ostle C, Johns DG, Atkinson A, Best M, Bresnan E, Machairopoulou M, Graves CA, Devlin M, Milligan A, Pitois S, Mellor A, Tett P, McQuatters-Gollop A. Lifeform indicators reveal large-scale shifts in plankton across the North-West European shelf. Glob Chang Biol 2020; 26:3482-3497. [PMID: 32237280 DOI: 10.1111/gcb.15066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 02/19/2020] [Indexed: 06/11/2023]
Abstract
Increasing direct human pressures on the marine environment, coupled with climate-driven changes, is a concern to marine ecosystems globally. This requires the development and monitoring of ecosystem indicators for effective management and adaptation planning. Plankton lifeforms (broad functional groups) are sensitive indicators of marine environmental change and can provide a simplified view of plankton biodiversity, building an understanding of change in lower trophic levels. Here, we visualize regional-scale multi-decadal trends in six key plankton lifeforms as well as their correlative relationships with sea surface temperature (SST). For the first time, we collate trends across multiple disparate surveys, comparing the spatially and temporally extensive Continuous Plankton Recorder (CPR) survey (offshore) with multiple long-term fixed station-based time-series (inshore) from around the UK coastline. These analyses of plankton lifeforms showed profound long-term changes, which were coherent across large spatial scales. For example, 'diatom' and 'meroplankton' lifeforms showed strong alignment between surveys and coherent regional-scale trends, with the 1998-2017 decadal average abundance of meroplankton being 2.3 times that of 1958-1967 for CPR samples in the North Sea. This major, shelf-wide increase in meroplankton correlated with increasing SSTs, and contrasted with a general decrease in holoplankton (dominated by small copepods), indicating a changing balance of benthic and pelagic fauna. Likewise, inshore-offshore gradients in dinoflagellate trends, with contemporary increases inshore contrasting with multi-decadal decreases offshore (approx. 75% lower decadal mean abundance), urgently require the identification of causal mechanisms. Our lifeform approach allows the collation of many different data types and time-series across the NW European shelf, providing a crucial evidence base for informing ecosystem-based management, and the development of regional adaptation plans.
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Affiliation(s)
- Jacob Bedford
- Marine Conservation Research Group, University of Plymouth, Plymouth, UK
| | - Clare Ostle
- The Marine Biological Association, The Laboratory, Plymouth, UK
| | - David G Johns
- The Marine Biological Association, The Laboratory, Plymouth, UK
| | | | - Mike Best
- The Environment Agency, Peterborough, UK
| | - Eileen Bresnan
- Marine Scotland Science, Marine Laboratory, Aberdeen, UK
| | | | - Carolyn A Graves
- Centre for Environment Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - Michelle Devlin
- Centre for Environment Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
- Marine Collaborative Centre for Sustainable Use of the Seas (CCSUS), School of Environmental Sciences, University of East Anglia, Norwich, UK
| | - Alex Milligan
- Centre for Environment Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - Sophie Pitois
- Centre for Environment Fisheries and Aquaculture Science (Cefas), Lowestoft, UK
| | - Adam Mellor
- Agri-Food & Biosciences Institute, Belfast, UK
| | - Paul Tett
- Scottish Association for Marine Science, Scottish Marine Institute, Oban, UK
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