Slaughterhouse By-Product Valorization: Hydrolysis Degree Modification for Higher Antimicrobial Recovery by Electroseparation

In the actual context of food safety and circular economy, the separation of the α137–141 antimicrobial peptide (TSKYR, 653 Da) coming from the hydrolysis of bovine hemoglobin, a non-valorized slaughterhouse by-product, and its reuse as a preservative agent for food products during storage would be...

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Bibliographic Details
Published in:Waste and biomass valorization 2021-04, Vol.12 (4), p.1977-1989
Main Authors: Przybylski, Rémi, Bazinet, Laurent, Kouach, Mostafa, Goossens, Jean-François, Dhulster, Pascal, Firdaous, Loubna, Nedjar-Arroume, Naïma
Format: Article
Language:English
Subjects:
Abattoirs
Antiinfectives and antibacterials
Antimicrobial peptides
Byproducts
Circular economy
Clean technology
Context
Electrodialysis
Engineering
Environment
Environmental Engineering/Biotechnology
Food
Food safety
Hemoglobin
Hydrolysates
Hydrolysis
Industrial Pollution Prevention
Life Sciences
Original Paper
Peptides
Preservatives
Recovery
Renewable and Green Energy
Separation
Ultrafiltration
Waste Management/Waste Technology
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Summary:In the actual context of food safety and circular economy, the separation of the α137–141 antimicrobial peptide (TSKYR, 653 Da) coming from the hydrolysis of bovine hemoglobin, a non-valorized slaughterhouse by-product, and its reuse as a preservative agent for food products during storage would be of major interest. However, depending on the degree of hydrolysis (DH) of the bovine hemoglobin, the TSKYR peptide environment into the hydrolysate will be different and would impact its recovery yield by electrodialysis with ultrafiltration membranes (EDUF), a hybrid and eco-friendly technology. In this context, five DHs (3, 5, 10, 13 and 18%) were investigated to study the influence of the peptide populations on the α137–141 selective separation by EDUF. It appeared from these results that the most appropriate DH was of 5% since a lower population of peptides between 500 and 1000 Da was present and the subunits of hemoglobin were already digested. Hence, an enrichment factor of about 13 folds for the α137–141 was obtained in comparison with the initial hydrolysate. At our knowledge, it was the first time that the effect of the hydrolysis degree of a protein is demonstrated to impact preferentially the separation of a specific peptide by EDUF. Graphic Abstract
ISSN:1877-2641
1877-265X
DOI:10.1007/s12649-020-01154-7