Pilot-scale ultrasound-assisted extraction of protein from soybean processing materials is not recommended for industrial usage

Research output: Contribution to journalArticle

Authors

  • K.E. Preece
  • Nasim Hooshyar
  • A. J. Krijgsman
  • Peter Fryer
  • Nicolaas J. Zuidam

Colleges, School and Institutes

Abstract

Unit operations to enhance protein extraction within the food industry are vital to improve current processes, especially for cost reductions and sustainability. Here a study of ultrasound-assisted extraction (UAE) from soy slurry and okara produced at pilot-scale and further processed using a lab or pilot-scale probe system is presented. Confocal imaging and particle size measurements were used to study the physical effects of UAE on these soy processing materials. Ultrasound at pilot-scale was infeasible for soy slurry, in contrast to lab-scale. UAE from okara solution significantly increased protein yield by 4.2% at pilot-scale (p < 0.05). Okara solution flow rate and okara concentration also significantly improved the protein extraction yield. During lab-scale sonication of okara solution, a greater energy intensity resulted in a higher yield of up to 40% after 15 min treatment. Considering total extraction yields at pilot-scale during soybase production, ultrasound is not considered viable for industrial processing.

Details

Original languageEnglish
Pages (from-to)1-12
JournalJournal of Food Engineering
Volume206
Early online date7 Feb 2017
Publication statusPublished - Aug 2017

Keywords

  • Ultrasound-assisted extraction , Aqueous extraction , Pilot-scale , Soy protein