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<p>Shrimp, a highly popular commodity in the seafood industry, generates substantial waste, posing significant environmental challenges. Traditional waste processing methods are often inefficient, highlighting the need for innovative and sustainable approaches to resource utilization. To address this issue, collagen hydrolysates were obtained through both enzymatic hydrolysis and fermentation, using self-produced proteases from <i>Enterococcus</i> bacteria. The study investigated various strains of <i>Enterococcus faecium</i>, different shrimp parts, and multiple extraction techniques, including fermentation and enzymatic hydrolysis. The highest collagen hydrolysate yield (8.03% dry weight; n = 3) was obtained using the L46 + L24 protease combination during enzymatic hydrolysis. Fermentation with the same strain combination produced a maximum yield of 6.87% (n = 3). Both approaches were also evaluated using individual strains and mixed-strain combinations, and collagen recovery was assessed separately in shrimp heads and carcasses. Strain L24 showed the highest performance across both methods, particularly in enzymatic hydrolysis of shrimp heads (0.60&#xa0;mg/g ± 0.07). These findings demonstrate the potential of microbial proteases as an eco-friendly alternative to conventional collagen extraction methods and contribute to sustainable shrimp waste valorization.</p>

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Sustainable enzymatic and fermentative extraction of collagen hydrolysates from shrimp waste using Enterococcus proteases

  • 期刊论文

  • 发表日期：

    2026年3月6日

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  • Ikhlas Laasri,
  • Francesco Cacciola,
  • Laura Mejias,
  • Mohammed Bakkali,
  • Amin Laglaoui

摘要

Shrimp, a highly popular commodity in the seafood industry, generates substantial waste, posing significant environmental challenges. Traditional waste processing methods are often inefficient, highlighting the need for innovative and sustainable approaches to resource utilization. To address this issue, collagen hydrolysates were obtained through both enzymatic hydrolysis and fermentation, using self-produced proteases from Enterococcus bacteria. The study investigated various strains of Enterococcus faecium, different shrimp parts, and multiple extraction techniques, including fermentation and enzymatic hydrolysis. The highest collagen hydrolysate yield (8.03% dry weight; n = 3) was obtained using the L46 + L24 protease combination during enzymatic hydrolysis. Fermentation with the same strain combination produced a maximum yield of 6.87% (n = 3). Both approaches were also evaluated using individual strains and mixed-strain combinations, and collagen recovery was assessed separately in shrimp heads and carcasses. Strain L24 showed the highest performance across both methods, particularly in enzymatic hydrolysis of shrimp heads (0.60 mg/g ± 0.07). These findings demonstrate the potential of microbial proteases as an eco-friendly alternative to conventional collagen extraction methods and contribute to sustainable shrimp waste valorization.