Recent patents on the upgrading of fish by-products

Pedro Jesús García Moreno, R. Pérez-Gálvez, Emilia M. Guadix, Antonio Guadix

Research output: Contribution to journalJournal articleResearchpeer-review


The fish and aquaculture activities produce an important volume of by-products due to discards and processing on board and in land. These residues (fillet cuts, bones, heads, viscera and tails) require to be processed in order to not create a significant environmental problem and to maintain the economical viability of the fisheries sector. The present paper reviews a list of recent patents on fish by-products applications, specifically on the products with the highest added value, such as fish protein hydrolysates and fish oil. Initially, an assessment is presented of the processes and techniques employed to obtain fish protein hydrolysates, which are classified by their utilization: ingredients for food, products for animal feeding, bioactive compounds, fertilizers, cosmetics and nutrient media for bacterial growth in specific industrial processes. Secondly, the different methods to extract the oil from the fish, to refine the fish oil avoiding undesirable taste and odour and to improve the stability of the mentioned oil, are evaluated. Finally, procedures for the microencapsulation of the oil obtained and its incorporation into food compositions have been surveyed. © 2010 Bentham Science Publishers Ltd.
Original languageEnglish
JournalRecent Patents on Chemical Engineering
Issue number2
Pages (from-to)149-162
Number of pages14
Publication statusPublished - 2010
Externally publishedYes


  • Chemical Engineering (all)
  • Fish by-products
  • Fish oil
  • Fish protein hydrolysates
  • Added values
  • Animal feeding
  • Bacterial growth
  • Bioactive compounds
  • Economical viability
  • Environmental problems
  • Fillet-cut
  • Fish by-product
  • Fish protein hydrolysate
  • Fisheries sector
  • Industrial processs
  • Nutrient media
  • Taste and odour
  • Agriculture
  • Aquaculture
  • Hydrolysis
  • Patents and inventions
  • Petroleum refining
  • Proteins
  • Fish

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