alexa Investigation of the protein-protein aggregation of egg white proteins under pulsed electric fields.


Journal of Nutrition & Food Sciences

Author(s): Zhao W, Yang R, Tang Y, Zhang W, Hua X

Abstract Share this page

Abstract Egg whites were exposed to pulsed electric fields (PEFs) to investigate the protein-protein aggregation. No insoluble protein aggregate was found when egg whites were exposed to PEFs at 25, 30, and 35 kV/cm for 400 micros. However, atomic force microscopy showed that the sizes of the protein particles increased. Native polyacrylamide gel electrophoresis (PAGE) demonstrated the existence of aggregates under PEFs at 35 kV/cm for 400 micros. Sodium dodecyl sulfate (SDS)-PAGE in the presence and absence of 2-mercaptoethanol further indicated that sulfhydryl-disulfide interchange reactions occurred under PEFs. Differential scanning calorimetry scans showed 400 micros of PEF treatment at 35 kV/cm denatured 16.5\% proteins. Insoluble egg white protein aggregates were induced by PEF (35 kV/cm, 800 micros) and heat (60 degrees C, 3.5 min) treatments. Disulfide bonds were the dominant binding forces in the formation of protein aggregates. However, the weakly noncovalent bonds play a much more important role in the protein aggregation forming in heat treatment (60 degrees C, 3.5 min) than that in PEF treatment (35 kV/cm, 800 micros). This article was published in J Agric Food Chem and referenced in Journal of Nutrition & Food Sciences

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

  • Food Processing & Technology
    October 02-04, 2017 London, UK
  • Public Health, Epidemiology & Nutrition
    November 13-14, 2017 Osaka, Japan
  • Food Processing & Technology
    December 05-07, 2016 San Antonio, USA
Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version