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- Sophie Steinhagen
Sophie Steinhagen
Forskare
Institutionen för marina vetenskaperOm Sophie Steinhagen
For further information see also my webpage: seaweed-research-steinhagen.com
Research interests
Seaweeds are a key factor in a more sustainable future. With their valuable and often bioactive compounds macroalgae find application in the pharmaceutical, biomaterial or food sector.
With my research I develop new strains for the cultivation of valuable green algal species within the genus Ulva. The work aims to develop environmentally sound cultivation techniques including seeding, juvenile growth, as well as laboratory and open-water cultivation optimized for Swedish conditions. We investigate how environmental factors and the genetic composition of seaweeds affect the content of high value compounds in the cultivated biomass.
Thus an important key component is the molecular, taxonomic identification of native strains within the morphologically highly valuable genus Ulva. Genetic studies of Ulva sensu lato are carried out in order to investigate the population structure of different populations along the Swedish west coast. Through selective breeding new culture varieties and high-performing cultivation strains will be developed.
Results from this research project will form the basis for cultivation and breeding protocols adapted to Swedish algal strains and environmental conditions that, in the future, can be used by commercial farmers.
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A new method for protein extraction from sea lettuce (Ulva fenestrata) via surfactants and alkaline aqueous
solutions
João P. Trigo, Sophie Steinhagen, Kristoffer Stedt, Annika Krona, Simone Verhagen, Henrik Pavia, Mehdi Abdollahi, Ingrid Undeland
Food Chemistry - 2025 -
Brining as an effective method to stabilise sea lettuce (Ulva fenestrata) -impact on colour, texture, chemical characteristics and microbial
dynamics
Mar Vall-llosera, Sophie Steinhagen, Henrik Pavia, Ingrid Undeland
Algal Research - 2024 -
A step towards closing the food-waste gap in novel protein sources: Post-harvest protein boost of the seaweed crop Ulva by herring production tub
water
Sophie Steinhagen, Kristoffer Stedt, João P. Trigo, Ingrid Undeland, Henrik Pavia
Future Foods - 2024 -
The green seaweed Ulva: tomorrow’s “wheat of the sea” in foods, feeds, nutrition, and
biomaterials
Laurie Hoffmann, Sylvia Strauss, Muki Shpigeld, Lior Guttmann, Dagmar Stengel, Céline Rebours, Natasha Gjorgovskai, Gamze Turan, Karina Balina, Gabrielle Zammit, Jessica Adams, Umair Ahsan, Angela Bartolo, John Bolton, Rosário Dominguess, Ömerhan Dürraniu, Orhan Tufan Eroldogan, Andreia Freitas, Alexander Golberg, Kira Kremer, Francisca Marquess, Massimo Milia, Sophie Steinhagen, Ekin Sucu, Liliana Vargas-Murga, Shiri Zemah-Shamiraf, Ziv Zemah-Shamirag, Antonio Meléndez-Martínez
Critical reviews in food science and nutrition - 2024 -
Sensory quality of emulsions prepared with the seaweed Ulva spp. or a derived protein
ingredient
Joao Trigo, Karin Wendin, Sophie Steinhagen, Karin Larsson, Ingrid Undeland
Future Foods - 2024 -
Phylogeny and ecology of the green seaweed
Ulva
Sophie Steinhagen, Thomas Wichard, Jonas Blomme
Botanica Marina - 2024 -
The cultivated sea lettuce (Ulva) microbiome: Successional and seasonal
dynamics
Luna van der Loos, Cynthia De Wilde, Anne Willems, Olivier de Clerck, Sophie Steinhagen
Aquaculture - 2024 -
Sensory and consumer aspects of sea lettuce (Ulva fenestrata) – impact of harvest time, cultivation conditions and protein
level
Karin Wendin, Kristoffer Stedt, Sophie Steinhagen, Henrik Pavia, Ingrid Undeland
Future Foods - 2024 -
Salinity as a tool for strain selection in recirculating land-based production of Ulva spp. from germlings to
adults
Isabel Cardoso, Anneke Meiβner, Anja Sawicki, Inka Bartsch, Klaus-Ulrich Valentin, Sophie Steinhagen, Bela Buck, Laurie Hoffmann
Journal of Applied Phycology - 2023 -
Molecular identification of the ubiquitous green algae Ulva reveals high biodiversity, crypticity, and invasive species in the Atlantic-Baltic Sea
region
Sophie Steinhagen, Samanta Hoffmann, Henrik Pavia, Gunilla B. Toth
Algal Research - 2023 -
Determination of nitrogen content in Ulva fenestrata by color image analysis – a rapid and cost-efficient method to estimate nitrogen content in
seaweeds
Kristoffer Stedt, Gunilla B. Toth, Johan Davegård, Henrik Pavia, Sophie Steinhagen
Frontiers in Marine Science - 2022 -
Salinity and host drive Ulva associated bacterial communities across the Atlantic-Baltic Sea
gradient
Luna van der Loos, Sofie D’Hondt, Aschwin Engelen, Henrik Pavia, Gunilla B. Toth, Anne Willems, Florian Weinberger, Olivier De Clerck, Sophie Steinhagen
Molecular Ecology - 2022 -
Vegetation of the supralittoral and upper sublittoral zones of the Western German Baltic Sea coast: a phytosociological
study
Dmitry Afanasyev, Shamil Abdullin, Sophie Steinhagen, Florian Weinberger
Botanica Marina - 2022 -
Closed life-cycle aquaculture of sea lettuce (Ulva fenestrata): performance and biochemical profile differ in early developmental
stages
Sophie Steinhagen, Karin Larsson, Joakim Olsson, Eva Albers, Ingrid Undeland, Henrik Pavia, Gunilla B. Toth
Frontiers in Marine Science - 2022 -
Cultivation of seaweeds in food production process waters: Evaluation of growth and crude protein
content
Kristoffer Stedt, João P. Trigo, Sophie Steinhagen, Göran M. Nylund, Bita Forghani, Henrik Pavia, Ingrid Undeland
Algal Research - 2022 -
Post-harvest cultivation with seafood process waters improves protein levels of Ulva fenestrata while retaining important food sensory
attributes
Kristoffer Stedt, Sophie Steinhagen, João P. Trigo, Barbro Kollander, Ingrid Undeland, Gunilla B. Toth, Karin Wendin, Henrik Pavia
Frontiers in Marine Science - 2022 -
Combining pressing and alkaline extraction to increase protein yield from Ulva fenestrata
biomass
Louise Juul, Sophie Steinhagen, Anette Bruhn, Søren Krogh Jensen, Ingrid Undeland, Trine Kastrup Dalsgaard
Food and Bioproducts Processing - 2022 -
Harvest time can affect the optimal yield and quality of sea lettuce (Ulva fenestrata) in a sustainable sea-based
cultivation
Sophie Steinhagen, Swantje Enge, Gunnar Cervin, Karin Larsson, Ulrica Edlund, Alina Schmidt, Niklas Wahlström, Barbro Kollander, Henrik Pavia, Ingrid Undeland, Gunilla Toth
Frontiers in Marine Science - 2022 -
An appraisal of Ulva (Ulvophyceae, Chlorophyta)
taxonomy
Lan-Anh T. Tran, Christophe Vieira, Sophie Steinhagen, Christine A. Maggs, Masanori Hiraoka, Satoshi Shimada, Tu Van Nguyen, Olivier De Clerck, Frederik Leliaert
Journal of Applied Phycology - 2022 -
Ulva fenestrata protein – comparison of three extraction methods with respect to
protein yield and protein
quality
Louise Juul, Marianne Danielsen, Caroline Nebel, Sophie Steinhagen, Annette Bruhn, Søren Krogh Jensen, Ingrid Undeland, Trine Kastrup Dalsgaard
Algal Research - 2021 -
In vitro digestibility and Caco-2 cell bioavailability of sea lettuce (Ulva fenestrata) proteins extracted with pH-shift
technology
João Trigo, Niklas Engström, Sophie Steinhagen, Louise Juul, Hanna Harrysson, Gunilla B. Toth, Henrik Pavia, Nathalie Scheers, Ingrid Undeland
Food Chemistry - 2021 -
Sustainable large-scale aquaculture of the northern hemisphere Sea Lettuce, Ulva fenestrata, in an off-shore
seafarm
Sophie Steinhagen, Swantje Enge, Karin Larsson, Joakim Olsson, Göran M. Nylund, Eva Albers, Henrik Pavia, Ingrid Undeland, Gunilla B. Toth
Journal of Marine Science and Engineering - 2021 -
DNA barcoding of the German green supralittoral zone indicates the distribution and phenotypic plasticity of Blidingia species and reveals Blidingia cornuta sp.
nov.
Sophie Steinhagen, Luisa Düsedau, Florian Weinberger
Taxon - 2021 -
Screening and verification of extranuclear genetic markers in green tide algae from the Yellow
Sea
Chuner Cai, Kai Gu, Hui Zhao, Sophie Steinhagen, Peimin He, Thomas Wichard
PLoS ONE - 2021 -
Effects of irradiance, temperature, nutrients, and pCO(2) on the growth and biochemical composition of cultivated Ulva
fenestrata
Gunilla B. Toth, H. Harrysson, N. Wahlstrom, J. Olsson, Annelous Oerbecke, Sophie Steinhagen, Alexandra Kinnby, Joel White, E. Albers, U. Edlund, I. Undeland, Henrik Pavia
Journal of Applied Phycology - 2020 -
Ulvan dialdehyde-gelatin hydrogels for removal of heavy metals and methylene blue from aqueous
solution.
Niklas Wahlström, Sophie Steinhagen, Gunilla Toth, Henrik Pavia, Ulrica Edlund
Carbohydrate polymers - 2020 -
Cultivation conditions affect the monosaccharide composition in Ulva
fenestrata
J. Olsson, Gunilla B. Toth, Annelous Oerbecke, S. Cvijetinovic, N. Wahlstrom, H. Harrysson, Sophie Steinhagen, Alexandra Kinnby, Joel White, U. Edlund, I. Undeland, Henrik Pavia, E. Albers
Journal of Applied Phycology - 2020 -
Effects of geographical location on potentially valuable components in Ulva intestinalis sampled along the Swedish
coast
Joakim Olsson, Sofia Raikova, Joshua Mayers, Sophie Steinhagen, Christopher Chuck, Göran M. Nylund, Eva Albers
Applied Phycology - 2020 -
Conspecificity of the model organism Ulva mutabilis and Ulva compressa (Ulvophyceae,
Chlorophyta).
Sophie Steinhagen, Andrea Barco, Thomas Wichard, Florian Weinberger
Journal of phycology - 2019 -
New records from the southern North Sea and first records from the Baltic Sea of Kornmannia
leptoderma
Florian Weinberger, Sophie Steinhagen, Dmitry F. Afanasyev, Rolf Karez
Botanica Marina - 2019 -
Surveying seaweeds from the Ulvales and Fucales in the world's most frequently used artificial waterway, the Kiel
Canal
Sophie Steinhagen, Rolf Karez, Florian Weinberger
Botanica Marina - 2019 -
Molecular analysis of Ulva compressa (Chlorophyta, Ulvales) reveals its morphological plasticity, distribution and potential invasiveness on German North Sea and Baltic Sea
coasts
Sophie Steinhagen, F. Weinberger, R. Karez
European Journal of Phycology - 2019 -
Cryptic, alien and lost species: molecular diversity of Ulva sensu lato along the German coasts of the North and Baltic
Seas
Sophie Steinhagen, R. Karez, F. Weinberger
European Journal of Phycology - 2019