Journal
PROCESS BIOCHEMISTRY
Volume 50, Issue 11, Pages 1843-1851Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.procbio.2015.08.001
Keywords
Salmon backbones; Fish protein hydrolysates; Biopeptides; Nanospheres; Anti-ageing
Categories
Funding
- European Community [289170-APROPOS]
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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, Corolase (R) 7089 and Protamex (R)) 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. (C) 2015 Elsevier Ltd. All rights reserved.
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