Characterisation of potential interactions between urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) and whey protein isolate

Urea fertilizer augmented with the urease inhibitor (UI) N-(n-butyl)-thiophosphoric triamide (NBPT), is used to stabilize nitrogen and reduce greenhouse gas emissions. Although studies have shown that NBPT does not enter milk via cattle grazing on NBPT-treated fields, questions remain about its pote...

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Main Authors: Maria P. Byrne, Patrick J. Forrestal, Tom F.O' Callaghan, Niharika Rahman, Aishwarya Ray, Martin Danaher, Bernard M. Corrigan, Chikere G. Nkwonta, Karl Richards, Farhad Garavand, Enda Cummins, Sean A. Hogan
Format: Article
Language:English
Published: Elsevier 2025-07-01
Series:Food Chemistry: X
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Online Access:http://www.sciencedirect.com/science/article/pii/S2590157525006479
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author Maria P. Byrne
Patrick J. Forrestal
Tom F.O' Callaghan
Niharika Rahman
Aishwarya Ray
Martin Danaher
Bernard M. Corrigan
Chikere G. Nkwonta
Karl Richards
Farhad Garavand
Enda Cummins
Sean A. Hogan
author_facet Maria P. Byrne
Patrick J. Forrestal
Tom F.O' Callaghan
Niharika Rahman
Aishwarya Ray
Martin Danaher
Bernard M. Corrigan
Chikere G. Nkwonta
Karl Richards
Farhad Garavand
Enda Cummins
Sean A. Hogan
author_sort Maria P. Byrne
collection DOAJ
description Urea fertilizer augmented with the urease inhibitor (UI) N-(n-butyl)-thiophosphoric triamide (NBPT), is used to stabilize nitrogen and reduce greenhouse gas emissions. Although studies have shown that NBPT does not enter milk via cattle grazing on NBPT-treated fields, questions remain about its potential to impact milk components were it inadvertently to enter the dairy supply chain. The aim of this study was to examine possible effects of NBPT on the chemistry and functionality of whey protein isolate (WPI). NBPT raised the peak denaturation temperature of WPI (p < 0.05) and resulted in increased hydrogen bonding and β-sheet formation. NBPT reduced the viscosity of WPI and caused faster gelation. NBPT had a competitive adsorption advantage at the air-water interface (p < 0.05) compared to WPI. Microscopy imaging of WPI-NBPT gels revealed increased protein aggregation. Overall, NBPT modified the structure and functionality of WPI, primarily through non-covalent interactions.
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series Food Chemistry: X
spelling doaj-art-af75af06b2694e84b5591f5c90a35c2b2025-08-03T04:43:03ZengElsevierFood Chemistry: X2590-15752025-07-0129102800Characterisation of potential interactions between urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) and whey protein isolateMaria P. Byrne0Patrick J. Forrestal1Tom F.O' Callaghan2Niharika Rahman3Aishwarya Ray4Martin Danaher5Bernard M. Corrigan6Chikere G. Nkwonta7Karl Richards8Farhad Garavand9Enda Cummins10Sean A. Hogan11Food Chemistry and Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Cork, Ireland; School of Biosystems and Food Engineering, Agriculture and Food Science, University College Dublin, Belfield, 4, Dublin, IrelandTeagasc, Johnstown Castle, Y35 Y521 Co. Wexford, IrelandSchool of Food and Nutritional Sciences, University College Cork, Gaol Walk, T12 YN60, Cork, IrelandTeagasc, Johnstown Castle, Y35 Y521 Co. Wexford, IrelandSchool of Biosystems and Food Engineering, Agriculture and Food Science, University College Dublin, Belfield, 4, Dublin, IrelandFood Safety Department, Ashtown Food Research Centre, Teagasc, Ashtown, 15, Dublin, IrelandFood Chemistry and Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Cork, IrelandDepartment of Biosciences, Durham University, United KingdomTeagasc, Johnstown Castle, Y35 Y521 Co. Wexford, IrelandDepartment of Biological Sciences, University of Limerick, V94 T9PX, Limerick, IrelandSchool of Biosystems and Food Engineering, Agriculture and Food Science, University College Dublin, Belfield, 4, Dublin, IrelandFood Chemistry and Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Cork, Ireland; Corresponding author.Urea fertilizer augmented with the urease inhibitor (UI) N-(n-butyl)-thiophosphoric triamide (NBPT), is used to stabilize nitrogen and reduce greenhouse gas emissions. Although studies have shown that NBPT does not enter milk via cattle grazing on NBPT-treated fields, questions remain about its potential to impact milk components were it inadvertently to enter the dairy supply chain. The aim of this study was to examine possible effects of NBPT on the chemistry and functionality of whey protein isolate (WPI). NBPT raised the peak denaturation temperature of WPI (p < 0.05) and resulted in increased hydrogen bonding and β-sheet formation. NBPT reduced the viscosity of WPI and caused faster gelation. NBPT had a competitive adsorption advantage at the air-water interface (p < 0.05) compared to WPI. Microscopy imaging of WPI-NBPT gels revealed increased protein aggregation. Overall, NBPT modified the structure and functionality of WPI, primarily through non-covalent interactions.http://www.sciencedirect.com/science/article/pii/S2590157525006479Urease inhibitorNBPTSurfactantSustainable ureaWhey protein isolateRheology
spellingShingle Maria P. Byrne
Patrick J. Forrestal
Tom F.O' Callaghan
Niharika Rahman
Aishwarya Ray
Martin Danaher
Bernard M. Corrigan
Chikere G. Nkwonta
Karl Richards
Farhad Garavand
Enda Cummins
Sean A. Hogan
Characterisation of potential interactions between urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) and whey protein isolate
Food Chemistry: X
Urease inhibitor
NBPT
Surfactant
Sustainable urea
Whey protein isolate
Rheology
title Characterisation of potential interactions between urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) and whey protein isolate
title_full Characterisation of potential interactions between urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) and whey protein isolate
title_fullStr Characterisation of potential interactions between urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) and whey protein isolate
title_full_unstemmed Characterisation of potential interactions between urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) and whey protein isolate
title_short Characterisation of potential interactions between urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) and whey protein isolate
title_sort characterisation of potential interactions between urease inhibitor n n butyl thiophosphoric triamide nbpt and whey protein isolate
topic Urease inhibitor
NBPT
Surfactant
Sustainable urea
Whey protein isolate
Rheology
url http://www.sciencedirect.com/science/article/pii/S2590157525006479
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