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Title

Influence of Supercritical Fluid Extraction Process on Techno-Functionality of Enzymatically Derived Peptides from Filter-Pressed Shrimp Waste.

Authors

Badfar, Narjes; Jafarpour, Ali; Casanova, Federico; Sales Queiroz, Lucas; Tilahun Getachew, Adane; Jacobsen, Charlotte; Jessen, Flemming; Gringer, Nina

Abstract

This study explored how combining supercritical fluid extraction (SFE) and enzymatic hydrolysis influences the structure and functionality of peptides recovered from filter-pressed shrimp waste. Freeze-dried press cake (PC) was defatted via SFE and hydrolyzed using Alcalase (ALC) and trypsin (TRYP). ALC-treated PC achieved the highest protein recovery (63.49%), extraction yield (24.73%), and hydrolysis degree (18.10%) (p < 0.05). SFE-treated hydrolysates showed higher zeta potential (−47.23 to −49.93 mV) than non-SFE samples (−25.15 to −38.62 mV) but had larger droplet sizes, indicating lower emulsion stability. SC-ALC displayed reduced fluorescence intensity and a red shift in maximum wavelength. TRYP hydrolysates reduced interfacial tension (20 mN/m), similar to sodium caseinate (Na-Cas, 13 mN/m), but with lesser effects. Dilatational rheology showed TRYP hydrolysates formed stronger, solid-like structures. These results emphasize protease efficacy over SFE for extracting functional compounds, enhancing shrimp waste valorization.

Subjects

SUPERCRITICAL fluid extraction; INTERFACIAL tension; ZETA potential; REDSHIFT; SHRIMPS

Publication

Marine Drugs, 2025, Vol 23, Issue 3, p122

ISSN

1660-3397

Publication type

Academic Journal

DOI

10.3390/md23030122

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