Pilot-scale production and physicochemical characterisation of spray-dried nanoparticulated whey protein powders

  • Jacob R. Guralnick
  • , Ram R. Panthi
  • , Francesca Bot
  • , Valeria L. Cenini
  • , Barry M.G. O’Hagan
  • , Shane V. Crowley
  • , James A. O’Mahony

Research output: Contribution to journalArticlepeer-review

Abstract

Spray-dried whey protein isolate (WPI) powders were prepared at pilot-scale from solutions without heat (WPIUH), heated (WPIH) or heated with calcium (WPIHCa), which were analysed and compared with a control sample (WPIC). WPIC, WPIUH, WPIH and WPIHCa solutions had whey protein denaturation levels of 0.0, 3.2, 64.4 and 74.4%, respectively. Computerised tomography scanning showed that 52.6, 84.0, 74.5 and 41.9% of WPIC, WPIUH, WPIH and WPIHCa powder particles had diameters of ≤30 µm. WPIHCa and WPIH powders were cohesive, while WPIC and WPIUH powders were easy flowing. Marked differences in microstructure were observed between WPIH and WPIHCa. There were no measured differences in wall friction, bulk density or colour.

Original languageEnglish
Pages (from-to)581-591
Number of pages11
JournalInternational Journal of Dairy Technology
Volume74
Issue number3
DOIs
Publication statusPublished - Aug 2021

Keywords

  • Aggregation
  • Nanoparticles
  • Physical properties
  • Powder
  • Whey protein

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