Effects of Extrusion on the Emulsifying Properties of Rumen and Soy Protein
Defatted rumen protein and soy protein concentrate were extruded in a 15.5:1 L/D single-screw extruder at the optimum conditions for their expansion (150°C and 35% moisture, and 130°C and 35% moisture, respectively). Emulsions were produced with these proteins and studied by rheology and time domain...
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Veröffentlicht in: | Food biophysics 2010-06, Vol.5 (2), p.94-102 |
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description | Defatted rumen protein and soy protein concentrate were extruded in a 15.5:1 L/D single-screw extruder at the optimum conditions for their expansion (150°C and 35% moisture, and 130°C and 35% moisture, respectively). Emulsions were produced with these proteins and studied by rheology and time domain low-resolution ¹H nuclear magnetic resonance (TD-NMR). Extrusion increased storage modulus of rumen protein emulsions. The opposite was observed for soy protein. Mechanical relaxation showed the existence of three relaxing components in the emulsions whose relative contributions were changed by extrusion. Likewise, spin-spin relaxation time constants (T ₂) measured by TD-NMR also showed three major distinct populations of protons in respect to their mobility that were also altered by extrusion. Extrusion increased surface hydrophobicity of both rumen and soy protein. Solubility of rumen protein increased with extrusion whereas soy protein had its solubility decreased after processing. Extrusion promoted molecular reorganization of protein, increasing its superficial hydrophobicity, affecting its interfacial properties and improving its emulsifying behavior. The results show that extrusion can promote the use of rumen, a by-product waste from the meat industry, in human nutrition by replacing soy protein in food emulsions. |
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C ; Arêas, Elizabeth P. G ; Silva, Marcelo A ; Arêas, José Alfredo G</creator><creatorcontrib>Silva, Ana C. C ; Arêas, Elizabeth P. G ; Silva, Marcelo A ; Arêas, José Alfredo G</creatorcontrib><description>Defatted rumen protein and soy protein concentrate were extruded in a 15.5:1 L/D single-screw extruder at the optimum conditions for their expansion (150°C and 35% moisture, and 130°C and 35% moisture, respectively). Emulsions were produced with these proteins and studied by rheology and time domain low-resolution ¹H nuclear magnetic resonance (TD-NMR). Extrusion increased storage modulus of rumen protein emulsions. The opposite was observed for soy protein. Mechanical relaxation showed the existence of three relaxing components in the emulsions whose relative contributions were changed by extrusion. Likewise, spin-spin relaxation time constants (T ₂) measured by TD-NMR also showed three major distinct populations of protons in respect to their mobility that were also altered by extrusion. Extrusion increased surface hydrophobicity of both rumen and soy protein. Solubility of rumen protein increased with extrusion whereas soy protein had its solubility decreased after processing. Extrusion promoted molecular reorganization of protein, increasing its superficial hydrophobicity, affecting its interfacial properties and improving its emulsifying behavior. The results show that extrusion can promote the use of rumen, a by-product waste from the meat industry, in human nutrition by replacing soy protein in food emulsions.</description><identifier>ISSN: 1557-1858</identifier><identifier>EISSN: 1557-1866</identifier><identifier>DOI: 10.1007/s11483-010-9149-0</identifier><language>eng</language><publisher>Boston: Boston : Springer US</publisher><subject>Analytical Chemistry ; Biological and Medical Physics ; Biophysics ; byproducts ; Chemistry ; Chemistry and Materials Science ; emulsifying properties ; Emulsions ; extruders ; extrusion ; Food Science ; Human nutrition ; hydrophobicity ; livestock and meat industry ; Meat processing ; NMR ; Nuclear magnetic resonance ; nuclear magnetic resonance spectroscopy ; Original Article ; protein concentrates ; protein sources ; Proteins ; protons ; Rheology ; rumen ; slaughterhouse wastes ; Solubility ; Soy products ; soy protein ; storage modulus ; Waste materials</subject><ispartof>Food biophysics, 2010-06, Vol.5 (2), p.94-102</ispartof><rights>Springer Science+Business Media, LLC 2010</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c404t-20121116f28f4ac0cf17440057811be467cde2c9dd687c460b07d0be049dc3af3</citedby><cites>FETCH-LOGICAL-c404t-20121116f28f4ac0cf17440057811be467cde2c9dd687c460b07d0be049dc3af3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11483-010-9149-0$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11483-010-9149-0$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27923,27924,41487,42556,51318</link.rule.ids></links><search><creatorcontrib>Silva, Ana C. C</creatorcontrib><creatorcontrib>Arêas, Elizabeth P. G</creatorcontrib><creatorcontrib>Silva, Marcelo A</creatorcontrib><creatorcontrib>Arêas, José Alfredo G</creatorcontrib><title>Effects of Extrusion on the Emulsifying Properties of Rumen and Soy Protein</title><title>Food biophysics</title><addtitle>Food Biophysics</addtitle><description>Defatted rumen protein and soy protein concentrate were extruded in a 15.5:1 L/D single-screw extruder at the optimum conditions for their expansion (150°C and 35% moisture, and 130°C and 35% moisture, respectively). Emulsions were produced with these proteins and studied by rheology and time domain low-resolution ¹H nuclear magnetic resonance (TD-NMR). Extrusion increased storage modulus of rumen protein emulsions. The opposite was observed for soy protein. Mechanical relaxation showed the existence of three relaxing components in the emulsions whose relative contributions were changed by extrusion. Likewise, spin-spin relaxation time constants (T ₂) measured by TD-NMR also showed three major distinct populations of protons in respect to their mobility that were also altered by extrusion. Extrusion increased surface hydrophobicity of both rumen and soy protein. Solubility of rumen protein increased with extrusion whereas soy protein had its solubility decreased after processing. Extrusion promoted molecular reorganization of protein, increasing its superficial hydrophobicity, affecting its interfacial properties and improving its emulsifying behavior. The results show that extrusion can promote the use of rumen, a by-product waste from the meat industry, in human nutrition by replacing soy protein in food emulsions.</description><subject>Analytical Chemistry</subject><subject>Biological and Medical Physics</subject><subject>Biophysics</subject><subject>byproducts</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>emulsifying properties</subject><subject>Emulsions</subject><subject>extruders</subject><subject>extrusion</subject><subject>Food Science</subject><subject>Human nutrition</subject><subject>hydrophobicity</subject><subject>livestock and meat industry</subject><subject>Meat processing</subject><subject>NMR</subject><subject>Nuclear magnetic resonance</subject><subject>nuclear magnetic resonance spectroscopy</subject><subject>Original Article</subject><subject>protein concentrates</subject><subject>protein sources</subject><subject>Proteins</subject><subject>protons</subject><subject>Rheology</subject><subject>rumen</subject><subject>slaughterhouse wastes</subject><subject>Solubility</subject><subject>Soy products</subject><subject>soy protein</subject><subject>storage modulus</subject><subject>Waste materials</subject><issn>1557-1858</issn><issn>1557-1866</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9kNtKxDAQhoMouK4-gFfWB6jONGmaXspSDygornsdummyZtlN1qQF9-1treidMDAD8_9z-Ag5R7hCgOI6IjJBU0BIS2RlCgdkgnlepCg4P_ytc3FMTmJcAzDGOEzIY2WMVm1MvEmqzzZ00XqX9NG-66Tadptozd66VfIS_E6H1upv6Wu31S6pXZPM_X7otdq6U3Jk6k3UZz95Sha31dvsPn16vnuY3TyligFr0wwwQ0RuMmFYrUAZLBgDyAuBuNSMF6rRmSqbhotC9VcuoWhgqYGVjaK1oVNyOc7dBf_R6djKte-C61dKUSJnSKHX4KhRwccYtJG7YLd12EsEORCTIzHZE5MDMTl4stETe61b6fA39z_TxWgytZf1KtgoF_P-RQoospJTSr8AAY92cQ</recordid><startdate>20100601</startdate><enddate>20100601</enddate><creator>Silva, Ana C. 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G ; Silva, Marcelo A ; Arêas, José Alfredo G</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c404t-20121116f28f4ac0cf17440057811be467cde2c9dd687c460b07d0be049dc3af3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Analytical Chemistry</topic><topic>Biological and Medical Physics</topic><topic>Biophysics</topic><topic>byproducts</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>emulsifying properties</topic><topic>Emulsions</topic><topic>extruders</topic><topic>extrusion</topic><topic>Food Science</topic><topic>Human nutrition</topic><topic>hydrophobicity</topic><topic>livestock and meat industry</topic><topic>Meat processing</topic><topic>NMR</topic><topic>Nuclear magnetic resonance</topic><topic>nuclear magnetic resonance spectroscopy</topic><topic>Original Article</topic><topic>protein concentrates</topic><topic>protein sources</topic><topic>Proteins</topic><topic>protons</topic><topic>Rheology</topic><topic>rumen</topic><topic>slaughterhouse wastes</topic><topic>Solubility</topic><topic>Soy products</topic><topic>soy protein</topic><topic>storage modulus</topic><topic>Waste materials</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Silva, Ana C. 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C</au><au>Arêas, Elizabeth P. G</au><au>Silva, Marcelo A</au><au>Arêas, José Alfredo G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of Extrusion on the Emulsifying Properties of Rumen and Soy Protein</atitle><jtitle>Food biophysics</jtitle><stitle>Food Biophysics</stitle><date>2010-06-01</date><risdate>2010</risdate><volume>5</volume><issue>2</issue><spage>94</spage><epage>102</epage><pages>94-102</pages><issn>1557-1858</issn><eissn>1557-1866</eissn><abstract>Defatted rumen protein and soy protein concentrate were extruded in a 15.5:1 L/D single-screw extruder at the optimum conditions for their expansion (150°C and 35% moisture, and 130°C and 35% moisture, respectively). Emulsions were produced with these proteins and studied by rheology and time domain low-resolution ¹H nuclear magnetic resonance (TD-NMR). Extrusion increased storage modulus of rumen protein emulsions. The opposite was observed for soy protein. Mechanical relaxation showed the existence of three relaxing components in the emulsions whose relative contributions were changed by extrusion. Likewise, spin-spin relaxation time constants (T ₂) measured by TD-NMR also showed three major distinct populations of protons in respect to their mobility that were also altered by extrusion. Extrusion increased surface hydrophobicity of both rumen and soy protein. Solubility of rumen protein increased with extrusion whereas soy protein had its solubility decreased after processing. Extrusion promoted molecular reorganization of protein, increasing its superficial hydrophobicity, affecting its interfacial properties and improving its emulsifying behavior. The results show that extrusion can promote the use of rumen, a by-product waste from the meat industry, in human nutrition by replacing soy protein in food emulsions.</abstract><cop>Boston</cop><pub>Boston : Springer US</pub><doi>10.1007/s11483-010-9149-0</doi><tpages>9</tpages></addata></record> |
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subjects | Analytical Chemistry Biological and Medical Physics Biophysics byproducts Chemistry Chemistry and Materials Science emulsifying properties Emulsions extruders extrusion Food Science Human nutrition hydrophobicity livestock and meat industry Meat processing NMR Nuclear magnetic resonance nuclear magnetic resonance spectroscopy Original Article protein concentrates protein sources Proteins protons Rheology rumen slaughterhouse wastes Solubility Soy products soy protein storage modulus Waste materials |
title | Effects of Extrusion on the Emulsifying Properties of Rumen and Soy Protein |
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