Bio/sonochemical conversion of fish backbones into bioactive nanospheres

Margarida M. Fernandes, Diana Rivera, Antonio Francesko, Rasa Slizyte, Revilija Mozuraityte, Katariina Rommi, Raija Lantto, Tzanko Tzanov (Corresponding Author)

    Research output: Contribution to journalArticleScientificpeer-review

    9 Citations (Scopus)


    Salmon backbones, co-streams of salmon processing industry, were transformed into stable, odour-free ingredients for cosmetics. First, the backbones were hydrolysed using commercial proteases (Bromelain + Papain, Trypsin, Corolaser 7089 and Protamexr) in order to accomplish the release of fish protein hydrolysates (FPH), which showed antioxidant activity and aptitude to inhibit skin-degrading and inflammatory enzymes. However, due to the FPH instability in aqueous solution and propensity for microbial contamination, their bioactive properties were entirely lost only after 24 h. To overcome the low stability and prevent the effect loss, a sonochemical technology was then employed to transform the FPH into stable tea tree oil-filled bioactive peptide-shell nanospheres (NS). Such transformation boosted the FPH antioxidant potential, which was further reflected in protection of fibroblasts from UV damage. In the form of NSs, the FPH resisted microbial contamination for more than 6 months and presented antimicrobial activity against Escherichia coli and Staphylococcus aureus. In addition, the fish odour was eliminated after the NSs processing, thus addressing this important challenge for using fish raw materials in cosmetics. This work suggests an alternative high value use of the fishery co-streams and expands their application potential beyond their current use as fish or animal feed.
    Original languageEnglish
    Pages (from-to)1843-1851
    JournalProcess Biochemistry
    Issue number11
    Publication statusPublished - 2015
    MoE publication typeA1 Journal article-refereed


    • anti-ageing
    • biopeptides
    • fish protein hydrolysates
    • nanospheres
    • salmon backbones


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