Valorization strategies for hazardous proteinaceous waste from rendering production-Recent advances in specified risk materials (SRMs) conversion

Strict bans on specific risk materials (SRMs) are in place to prevent the spread of bovine spongiform encepha-lopathy (BSE). SRMs are characterized as tissues in cattle where misfolded proteins, the potential source of BSE infection, are concentrated. As a result of these bans, SRMs must be strictly isolated and disposed of, resulting in great costs for rendering companies. The increasing yield and the landfill of SRMs also exacerbated the burden on the environment. To cope with the emergence of SRMs, novel disposal methods and feasible value-added con-version routes are needed. The focus of this review is on the valorization progress achieved in the conversion of peptides derived from SRMs via an alternative disposal method, thermal hydrolysis. Promising value-added conversion of SRM-derived peptides into tackifiers, wood adhesives, flocculants, and bioplastics, is introduced. The potential conjugation strategies that can be adapted to SRM-derived peptides for desired properties are also critically reviewed. The purpose of this review is to discover a technical platform through which other hazardous proteinaceous waste, SRMs, can be treated as a high-demand feedstock for the production of renewable materials.

Automated summary

Strict bans are in place to prevent the spread of BSE by isolating and disposing of specific risk materials (SRMs) from cattle. However, these bans result in significant costs for rendering companies and environmental burdens. This review focuses on the valorization progress achieved in the conversion of SRM-derived peptides via thermal hydrolysis, introducing potential applications in various industries.