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Seasonal and culture period variations in the lipid and fatty acid content of Ulva lactuca cultivated in Mikhmoret onshore (Israel)

  • Nabeel Gnayem

    Nabeel Gnayem is a PhD student at the Porter School of Environment and Earth Sciences at Tel Aviv University, Israel. His research is conducted in Golberg’s lab and the Triangle Regional Research and Development Center, Kfar Qari, Israel. He completed his MSc in plant protection and virology at the Hebrew University of Jerusalem.

     EMAIL logo     , Razan Unis

    Razan Unis is a PhD student at the Porter School of Environment and Earth Sciences at Tel Aviv University, Israel. Her research is conducted in Golberg’s lab and the Triangle Regional Research and Development Center, Kfar Qari 30075, Israel. She has a MSc in medical biology from Tel Aviv University, Israel.

         , Rima Gnaim

    Rima Gnaim is a Direct-track PhD student at the Porter School of Environmental and Earth Sciences at Tel Aviv University, Israel.

         , Alexander Chemodanov , Álvaro Israel , Jallal Gnaim

    Jallal Gnaim is a senior research scientist at The Triangle Regional R&D Center, Kfar Qari, Israel. He is a pharmaceutical chemist with extensive experience in organic synthesis, analyzing active materials, and developing technologies for functional materials.

         and Alexander Golberg

    Alexander Golberg is an associate professor at Porter School of the Environment and Earth Sciences, Tel Aviv University, Israel. He completed his PhD in bioengineering at the Hebrew University of Jerusalem. He continued to work on a variety of projects that involved engineering and biology at UC Berkeley and Harvard Medical School. His main research interests lie in biological system engineering using seaweeds, seaweed biorefinery, and the sustainable production of food, materials, and biofuels for the benefit of the environment, and human health.
Published/Copyright: January 5, 2024
Botanica Marina
From the journal Botanica Marina Volume 67 Issue 2

Abstract

The use of high-value fatty acids (FA), omega-3 (n-3), and omega-6 (n-6) from seaweed could relieve the pressure from natural wild fish sources and reduce overfishing worldwide. This research is designed to explore how the harvest season (winter, spring, and summer) and culture period influence the biomass production yield, lipid content, and FA composition in the green seaweed Ulva sp. The studied seaweed was grown in plastic sleeves with flowthrough seawater in Mikhmoret (East Mediterranean, Israel) from July 2019 to December 2020. The Ulva species was identified as Ulva lactuca Linnaeus by DNA barcoding using rbcL, ITS, and tufA markers. No detectable genetic variability in U. lactuca samples was found throughout the research period. A quantitative examination of the lipid and FA content in U. lactuca in different harvest seasons revealed that the maximum content of lipids was in the summer, and that of polyunsaturated fatty acids (PUFAs) was in the winter. The PUFA profile included eicosapentaenoic acid, docosapentaenoic acid, docosahexaenoic acid, n-3, and n-6, where the n-6/n-3 ratio was comparable with the desired range for a balanced nutritional diet.

Keywords: green seaweed; Ulva lactuca ; seasonal variation; culture period variation; lipids; fatty acids
Corresponding author: Nabeel Gnayem, Porter School of Environment and Earth Sciences, Tel Aviv University, Tel Aviv, Israel; and The Triangle Regional Research and Development Center, Kfar Qari 30075, Israel, E-mail:

About the authors

Nabeel Gnayem

Nabeel Gnayem is a PhD student at the Porter School of Environment and Earth Sciences at Tel Aviv University, Israel. His research is conducted in Golberg’s lab and the Triangle Regional Research and Development Center, Kfar Qari, Israel. He completed his MSc in plant protection and virology at the Hebrew University of Jerusalem.

Razan Unis

Razan Unis is a PhD student at the Porter School of Environment and Earth Sciences at Tel Aviv University, Israel. Her research is conducted in Golberg’s lab and the Triangle Regional Research and Development Center, Kfar Qari 30075, Israel. She has a MSc in medical biology from Tel Aviv University, Israel.

Rima Gnaim

Rima Gnaim is a Direct-track PhD student at the Porter School of Environmental and Earth Sciences at Tel Aviv University, Israel.

Jallal Gnaim

Jallal Gnaim is a senior research scientist at The Triangle Regional R&D Center, Kfar Qari, Israel. He is a pharmaceutical chemist with extensive experience in organic synthesis, analyzing active materials, and developing technologies for functional materials.

Alexander Golberg

Alexander Golberg is an associate professor at Porter School of the Environment and Earth Sciences, Tel Aviv University, Israel. He completed his PhD in bioengineering at the Hebrew University of Jerusalem. He continued to work on a variety of projects that involved engineering and biology at UC Berkeley and Harvard Medical School. His main research interests lie in biological system engineering using seaweeds, seaweed biorefinery, and the sustainable production of food, materials, and biofuels for the benefit of the environment, and human health.

Acknowledgments

A.G. and A.I. thank the Israeli Ministry of Health and Good Food Institute for financial support. A.G. thanks The Aaron Frenkel Air Pollution Initiative at Tel Aviv University. J.G. thanks The Triangle Regional R&D Center, Kfar Qari, for financial support. R.G. thanks the TRDC-TAU collaborative research grant, the Arianne de Rothchild Women’s Doctoral Program Scholarship, and the Lewis and Martin Whitman Scholarship for Arab students. The article is also based upon work from COST Action CA20106 “Tomorrow’s wheat of the sea’: Ulva, a model for an innovative mariculture”, supported by COST (European Cooperation in Science and Technology, www.cost.eu).

  1. Research ethics: Not applicable.

  2. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript.

  3. Competing interests: The authors declare that they have no conflicts of interest regarding this article.

  4. Research funding: A.G. and A.I. thank the Israeli Ministry of Health and Good Food Institute for financial support. A.G. thanks The Aaron Frenkel Air Pollution Initiative at Tel Aviv University.

  5. Data availability: Not applicable.

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Supplementary Material

This article contains supplementary material (https://doi.org/10.1515/bot-2023-0027).

Received: 2023-04-12
Accepted: 2023-11-23
Published Online: 2024-01-05
Published in Print: 2024-04-25

© 2023 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Editorial
  4. Phylogeny and ecology of the green seaweed Ulva
  5. Cultivation
  6. Germanium dioxide as agent to control the biofouling diatom Fragilariopsis oceanica for the cultivation of Ulva fenestrata (Chlorophyta)
  7. Seasonal and culture period variations in the lipid and fatty acid content of Ulva lactuca cultivated in Mikhmoret onshore (Israel)
  8. Ecology and Biology
  9. Bioactivity and chemical screening of endophytic fungi associated with the seaweed Ulva sp. of the Bay of Bengal, Bangladesh
  10. High-temperature stress induces bacteria-specific adverse and reversible effects on Ulva (Chlorophyta) growth and its chemosphere in a reductionist model system
  11. Evolution and Biodiversity
  12. Environmental gradients influence geographic differentiation and low genetic diversity of morphologically similar Ulva species in the Northwest Pacific
  13. Taxonomic assessment of blade-forming Ulva species (Ulvales, Chlorophyta) in the Galápagos Archipelago, Ecuador using DNA sequencing
  14. Genetic analysis of Ulva (Ulvaceae, Chlorophyta) type specimens resolves northeast Pacific blade-forming species
  15. Updating the Ulvaceae in the green seaweeds of Britain and Ireland
https://doi.org/10.1515/bot-2023-0027
Keywords for this article
green seaweed; Ulva lactuca; seasonal variation; culture period variation; lipids; fatty acids

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Editorial
  4. Phylogeny and ecology of the green seaweed Ulva
  5. Cultivation
  6. Germanium dioxide as agent to control the biofouling diatom Fragilariopsis oceanica for the cultivation of Ulva fenestrata (Chlorophyta)
  7. Seasonal and culture period variations in the lipid and fatty acid content of Ulva lactuca cultivated in Mikhmoret onshore (Israel)
  8. Ecology and Biology
  9. Bioactivity and chemical screening of endophytic fungi associated with the seaweed Ulva sp. of the Bay of Bengal, Bangladesh
  10. High-temperature stress induces bacteria-specific adverse and reversible effects on Ulva (Chlorophyta) growth and its chemosphere in a reductionist model system
  11. Evolution and Biodiversity
  12. Environmental gradients influence geographic differentiation and low genetic diversity of morphologically similar Ulva species in the Northwest Pacific
  13. Taxonomic assessment of blade-forming Ulva species (Ulvales, Chlorophyta) in the Galápagos Archipelago, Ecuador using DNA sequencing
  14. Genetic analysis of Ulva (Ulvaceae, Chlorophyta) type specimens resolves northeast Pacific blade-forming species
  15. Updating the Ulvaceae in the green seaweeds of Britain and Ireland
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