Recovery and characterization of proteinacious material recovered from thermal and alkaline hydrolyzed specified risk materials

Valorization of rendering industry wastes and co-products for industrial chemicals, materials and energy: review

“…SRM protein hydrolysate extracts are very soluble in water (Mekonnen et al, 2013d). However, SRM hydrolysates crosslinked with epoxy resins, compounds with epoxide functional groups capable of forming covalent bridge between amine (primary and secondary), hydroxyl, carboxyl, and sulfhydryl groups (El-Thaher et al, 2013b;Mekonnen et al, 2013b) are virtually insoluble in water.…”

“…Additional volumes of ash are also generated during the valorization of meat and bone meal and SRM by a thermal degradation process such as incineration and pyrolysis as fuel in cement kilns (Chaala & Roy, 2003). Ash residues are rich in calcium and phosphorus (Deydier et al, 2005;Mekonnen et al, 2013d), two major constituents of bones and as such it can be used a low-cost source of phosphorus and other minerals, or as an organic fertilizer. Minerals such as dicalcium phosphate, commonly produced from animal bones as a by-product of gelatin manufacturing (Grobben et al, 2004), find use as an animal feed ingredient to supply calcium and phosphorus required for animal bone growth and to improve milk yield of dairy cattle (Grobben et al, 2006).…”

“…This shows that such ash residue can be utilized as organic soil enrichment fertilizer and source of minerals for the industry. The potential use of bone ashes collected from thermal and alkaline hydrolysis of SRM residue as organic fertilizer is the other potential area of application (Mekonnen et al, 2013d). Other biotechnological approaches of bone degradation for the production of phosphorus fertilizers and low-molecular organic acids that is useful for plant fertilizer was also investigated and reported in the literature Saeid et al, 2013).…”

Thermosetting Proteinaceous Plastics from Hydrolyzed Specified Risk Material

“…Thermal hydrolysis at a temperature of at least 180 °C, a pressure of at least 1 200 kPa for at least 40 min is among the Canadian Food Inspection Agency (CFIA), Food and Drug Administration of the US (FDA), and European Union approved techniques of handling prohibited material including SRM. Such hydrolytic protocols destroy the prions that cause BSE while improving the solubility of the proteinaceous material, a major limiting factor to the functional utilization of rendered animal proteins such as blood meal, meat and bone meal, and SRM . To our knowledge there are no commercially viable applications of protein material extracted from SRM.…”

Characterization of Cellulose Nanocrystals and PLA Based Thin Films with either Silver or Antimicrobial Peptide

“…Specifically, amino acid and peptide quantification recovered from the different systems were analysed using a HPLC equipped with a fluorichrom detector (excitation 340 nm; emission 450 nm). Samples were derivatized using the O-phthadialdehyde method as reported by Mekonnen et al (2013). Sample separations were done via a Supelcosil 3 micron LC-18 reverse phase column (4.6 mm × 150 mm; Supelco) equipped with a Supelco guard column (4.6 mm × 50 mm, Supelco, Oakville, ON, Canada) packed with Supelco LC-18 reverse phase packing (20-40 μm).…”