Thermal hydrolysis of poultry byproducts for the production of microbial media
Abstract Rendered meat byproducts are important feedstocks for pet food formulas, esterified biodiesels and other bioproducts. However, feedstocks with high water contents are currently not attractive for rendering due to the need to evaporate the resulting high protein “stick” water. Consequently,...
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Nature Portfolio
2025-02-01
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| Online Access: | https://doi.org/10.1038/s41598-025-90411-7 |
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| author | Edward T. Drabold Manish Sakhakarmy Saravanan R. Shanmugam Sushil Adhikari Wellington Arthur Marko Rudar Melissa Boersma Qichen Wang Brendan T. Higgins |
| author_facet | Edward T. Drabold Manish Sakhakarmy Saravanan R. Shanmugam Sushil Adhikari Wellington Arthur Marko Rudar Melissa Boersma Qichen Wang Brendan T. Higgins |
| author_sort | Edward T. Drabold |
| collection | DOAJ |
| description | Abstract Rendered meat byproducts are important feedstocks for pet food formulas, esterified biodiesels and other bioproducts. However, feedstocks with high water contents are currently not attractive for rendering due to the need to evaporate the resulting high protein “stick” water. Consequently, many wet meat byproducts, like poultry dissolved air flotation (DAF) solids, are land applied, wasting a potential resource, and causing malodor for nearby communities. Herein, we present a process for rendering wet meat byproducts where the stick water produced from rendering hydrolyzers is sold as value-added microbial media and therefore does not require evaporation. Thermal hydrolysis experiments were performed on a wet (7% solids content) and drier feedstock (25% solids). Amino acids, the most valuable component of microbial media, were marginally higher in stick water produced from the 25% solids feedstock (1.7 g/L) compared to the 7% feedstock (1.5 g/L) despite the much higher solids input. Furthermore, the fatty acid composition of the thermally treated solids was unchanged by reactor solids loading. Mass and energy balances were performed to understand the impact of feedstock solids concentration on heating requirements. This work uses a process engineering approach to develop a new paradigm in rendering technology: upcycling wet meat byproducts into value-added microbial media. |
| format | Article |
| id | doaj-art-e042152f172f4d268a7bac07614d5685 |
| institution | OA Journals |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-e042152f172f4d268a7bac07614d56852025-08-20T02:15:00ZengNature PortfolioScientific Reports2045-23222025-02-0115111310.1038/s41598-025-90411-7Thermal hydrolysis of poultry byproducts for the production of microbial mediaEdward T. Drabold0Manish Sakhakarmy1Saravanan R. Shanmugam2Sushil Adhikari3Wellington Arthur4Marko Rudar5Melissa Boersma6Qichen Wang7Brendan T. Higgins8Department of Biosystems Engineering, Auburn UniversityDepartment of Biosystems Engineering, Auburn UniversityDepartment of Biosystems Engineering, Auburn UniversityDepartment of Biosystems Engineering, Auburn UniversityDepartment of Biosystems Engineering, Auburn UniversityDepartment of Animal Sciences, Auburn UniversityChemistry & Biochemistry, Auburn UniversityDepartment of Biosystems Engineering, Auburn UniversityDepartment of Biosystems Engineering, Auburn UniversityAbstract Rendered meat byproducts are important feedstocks for pet food formulas, esterified biodiesels and other bioproducts. However, feedstocks with high water contents are currently not attractive for rendering due to the need to evaporate the resulting high protein “stick” water. Consequently, many wet meat byproducts, like poultry dissolved air flotation (DAF) solids, are land applied, wasting a potential resource, and causing malodor for nearby communities. Herein, we present a process for rendering wet meat byproducts where the stick water produced from rendering hydrolyzers is sold as value-added microbial media and therefore does not require evaporation. Thermal hydrolysis experiments were performed on a wet (7% solids content) and drier feedstock (25% solids). Amino acids, the most valuable component of microbial media, were marginally higher in stick water produced from the 25% solids feedstock (1.7 g/L) compared to the 7% feedstock (1.5 g/L) despite the much higher solids input. Furthermore, the fatty acid composition of the thermally treated solids was unchanged by reactor solids loading. Mass and energy balances were performed to understand the impact of feedstock solids concentration on heating requirements. This work uses a process engineering approach to develop a new paradigm in rendering technology: upcycling wet meat byproducts into value-added microbial media.https://doi.org/10.1038/s41598-025-90411-7Amino acidsDissolved air flotation (DAF) solidsFatty acidsHydrothermal processingProcess modelSoluble protein |
| spellingShingle | Edward T. Drabold Manish Sakhakarmy Saravanan R. Shanmugam Sushil Adhikari Wellington Arthur Marko Rudar Melissa Boersma Qichen Wang Brendan T. Higgins Thermal hydrolysis of poultry byproducts for the production of microbial media Scientific Reports Amino acids Dissolved air flotation (DAF) solids Fatty acids Hydrothermal processing Process model Soluble protein |
| title | Thermal hydrolysis of poultry byproducts for the production of microbial media |
| title_full | Thermal hydrolysis of poultry byproducts for the production of microbial media |
| title_fullStr | Thermal hydrolysis of poultry byproducts for the production of microbial media |
| title_full_unstemmed | Thermal hydrolysis of poultry byproducts for the production of microbial media |
| title_short | Thermal hydrolysis of poultry byproducts for the production of microbial media |
| title_sort | thermal hydrolysis of poultry byproducts for the production of microbial media |
| topic | Amino acids Dissolved air flotation (DAF) solids Fatty acids Hydrothermal processing Process model Soluble protein |
| url | https://doi.org/10.1038/s41598-025-90411-7 |
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