Reports

100% fish in the Great Lakes region – Cisco (Coregonus Artedi) full utilization

Published:

29/07/2024

Authors:

Cécile Dargentolle, Jónas Viðarsson

Supported by:

Great Lakes St. Lawrence Governors & Premiers (GSGP)

Contact

Cecile Dargentolle

Project Manager

cecile@matis.is

This report presents a comprehensive biotechnical analysis of fillets and byproducts (heads, bones/frames, and skin) from Cisco (Coregonus Artedi) harvested in the Great Lakes region of the United States. Conducted by Matís for the Conference of Great Lakes St. Lawrence Governors & Premiers (GSGP), the study aims to identify higher-value alternative uses for Cisco byproducts.

Key findings include:

  • Whole Body Mass Balance and Proximate Composition: Detailed analysis of fillets, heads, bones, and skin.
  • Amino Acid and Hydroxyproline Content: Evaluation of amino acid content in heads and hydroxyproline content in skins and scales, with scales showing remarkably high hydroxyproline at 2.45 g/100g protein.

Utilization Alternatives

  1. Protein Isolate and Fish Oil from Heads: The heads showed significant amino acid content, making them suitable for protein isolate production and fish oil extraction.
  2. Gelatine Production from Skins and Scales: High hydroxyproline levels indicate potential for high-quality gelatine production.
  3. Protein Hydrolysates from Viscera and Roes: Although promising, these transformations require substantial investment and adequate raw material supply.

Conclusion and Recommendations This initial identification of utilization alternatives highlights the potential for value-added products from Cisco byproducts. Further analysis and feasibility studies are recommended to optimize and implement these alternatives.

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