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Norsk

Agnes Beenfeldt Petersen

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Agnes Beenfeldt Petersen

Researcher
Department of Biotechnology and Food Science
Faculty of Natural Sciences

agnes.b.petersen@ntnu.no
Kjemi 4, 4.111, Gløshaugen
About Publications Outreach

About

The polysaccharides alginates are found in seaweed and some soil bacteria. Alginates are industrially important because of their gelling and emulsifying properties. For example, alginate is used as a thickening agent in food and for biomaterials for medicinal use. My PhD is about alginate-modifying enzymes, which are enzymes we can use to optimise alginate, so that it gets the chain-length and composition, that we want. My main goal is to characterise how alginate lyases and epimerases work by better understanding their structure-function relationship. I work with enzymology and NMR spectroscopy, and with many different methods in general. My project is in collaboration with SINTEF Industry, DTU (Denmark), and Station Biologique de Roscoff (France).

I have a master’s in applied chemistry from DTU (Denmark), where I worked with biochemistry and organic and analytical chemistry. My master thesis was about the enzyme BeKdgF, which contributes to the degradation of alginate.

 

Competencies

  • Alginate epimerases
  • Alginate lyases
  • Enzymology
  • NMR

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2025

  • Spannenkrebs, Jan Benedict; Petersen, Agnes Beenfeldt; Aachmann, Finn Lillelund; Kabisch, Johannes Fritz. (2025) Immobilization of alginate C-5 epimerases using Bacillus subtilis spore display. Applied and Environmental Microbiology
    Academic article

2024

  • Gravdahl, Mina; Aarstad, Olav Andreas; Petersen, Agnes Beenfeldt; Karlsen, Stina Grønbeck; Donati, Ivan; Czjzek, Mirjam. (2024) A chemo-enzymatic method for preparation of saturated oligosaccharides from alginate and other uronic acid-containing polysaccharides. Carbohydrate Polymers
    Academic article
  • Rønne, Mette Errebo; Andersen, Christian Dybdahl; Teze, David; Petersen, Agnes Beenfeldt; Fredslund, Folmer; Stender, Emil G.P.. (2024) Action and cooperation in alginate degradation by three enzymes from the human gut bacterium Bacteroides eggerthii DSM 20697. Journal of Biological Chemistry
    Academic article

2023

  • Beenfeldt Petersen, Agnes; Mirbarati, Seyed Hossein; Svensson, Birte; Duus, Jens Øllgaard; Teze, David. (2023) The Engineered Hexosaminidase TtOGA-D120N Is an Efficient O-/N-/S-Glycoligase That Also Catalyzes Formation and Release of Oxazoline Donors for Cascade Syntheses with Glycosynthases or Transglycosylases. Biochemistry
    Academic article
  • Beenfeldt Petersen, Agnes; Tøndervik, Anne; Gaardløs, Margrethe; Ertesvåg, Helga; Sletta, Håvard; Aachmann, Finn Lillelund. (2023) Mannuronate C-5 epimerases and their use in alginate modification. Essays in Biochemistry
    Academic literature review

2022

  • Beenfeldt Petersen, Agnes; Christensen, Idd Andrea; Rønne, Mette E.; Stender, Emil G. P.; Teze, David; Svensson, Birte. (2022) 1H, 13C, 15N resonance assignment of the enzyme KdgF from Bacteroides eggerthii. Biomolecular NMR Assignments
    Academic article

Journal publications

  • Spannenkrebs, Jan Benedict; Petersen, Agnes Beenfeldt; Aachmann, Finn Lillelund; Kabisch, Johannes Fritz. (2025) Immobilization of alginate C-5 epimerases using Bacillus subtilis spore display. Applied and Environmental Microbiology
    Academic article
  • Gravdahl, Mina; Aarstad, Olav Andreas; Petersen, Agnes Beenfeldt; Karlsen, Stina Grønbeck; Donati, Ivan; Czjzek, Mirjam. (2024) A chemo-enzymatic method for preparation of saturated oligosaccharides from alginate and other uronic acid-containing polysaccharides. Carbohydrate Polymers
    Academic article
  • Rønne, Mette Errebo; Andersen, Christian Dybdahl; Teze, David; Petersen, Agnes Beenfeldt; Fredslund, Folmer; Stender, Emil G.P.. (2024) Action and cooperation in alginate degradation by three enzymes from the human gut bacterium Bacteroides eggerthii DSM 20697. Journal of Biological Chemistry
    Academic article
  • Beenfeldt Petersen, Agnes; Mirbarati, Seyed Hossein; Svensson, Birte; Duus, Jens Øllgaard; Teze, David. (2023) The Engineered Hexosaminidase TtOGA-D120N Is an Efficient O-/N-/S-Glycoligase That Also Catalyzes Formation and Release of Oxazoline Donors for Cascade Syntheses with Glycosynthases or Transglycosylases. Biochemistry
    Academic article
  • Beenfeldt Petersen, Agnes; Tøndervik, Anne; Gaardløs, Margrethe; Ertesvåg, Helga; Sletta, Håvard; Aachmann, Finn Lillelund. (2023) Mannuronate C-5 epimerases and their use in alginate modification. Essays in Biochemistry
    Academic literature review
  • Beenfeldt Petersen, Agnes; Christensen, Idd Andrea; Rønne, Mette E.; Stender, Emil G. P.; Teze, David; Svensson, Birte. (2022) 1H, 13C, 15N resonance assignment of the enzyme KdgF from Bacteroides eggerthii. Biomolecular NMR Assignments
    Academic article

Outreach

2024

  • Poster
    Petersen, Agnes Beenfeldt; Solem, Anita; Gaardløs, Margrethe; Sætrom, Gerd Inger; Tøndervik, Anne; Aachmann, Finn Lillelund. (2024) Mode of Action of AlgE1: A Modular Mannuronate C-5 Epimerase. Danish NMR meeting , Roskilde 2024-01-29 - 2024-01-30
  • Poster
    Petersen, Agnes Beenfeldt; Solem, Anita; Gaardløs, Margrethe; Sætrom, Gerd Inger; Sletta, Håvard; Tøndervik, Anne. (2024) Mode of Action of AlgE1: A Modular Mannuronate C-5 Epimerase. CBM15 , Gent 2024-05-05 - 2024-05-08
  • Lecture
    Petersen, Agnes Beenfeldt; Solem, Anita; Sætrom, Gerd Inger; Sletta, Håvard; Aachmann, Finn Lillelund; Tøndervik, Anne. (2024) Mode of Action of AlgE1 - A modular mannurnate C-5 Epimerase. BioCat BioCat , Stavanger 2024-09-11 - 2024-09-13

2023

  • Poster
    Beenfeldt Petersen, Agnes; Christensen, Idd Andrea; Rønne, Mette Errebo; Stender, Emil G. P.; Teze, David; Svensson, Birte. (2023) NMR characterisation of the alginate-degrading enzyme BeKdgF. Norsk selskap for magnetisk resonans MR2023 , Trondheim 2023-05-22 - 2023-05-23
  • Academic lecture
    Beenfeldt Petersen, Agnes; Rønne, Mette Errebo; Madsen, Mikkel; Klau, Leesa Jane; Svensson, Birte; Aachmann, Finn Lillelund. (2023) Characterisation of Alginate-Modifying Enzymes. Norsk selskap for magnetisk resonans MR2023 , Trondheim 2023-05-22 - 2023-05-23

2022

  • Poster
    Beenfeldt Petersen, Agnes; Christensen, Idd Andrea; Rønne, Mette Errebo; Stender, Emil G. P.; Teze, David; Svensson, Birte. (2022) NMR characterisation of the alginate-degrading enzyme BeKdgF. Danish NMR Meeting 2022 , Århus 2022-06-20 - 2022-06-21
  • Poster
    Beenfeldt Petersen, Agnes; Christensen, Idd Andrea; Rønne, Mette Errebo; Stender, Emil G. P.; Teze, David; Svensson, Birte. (2022) NMR characterisation of the alginate-degrading enzyme BeKdgF. NMBU Carbohydrate Bioengineering Meeting 2022 , Norefjell 2022-09-25 - 2022-09-28

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