Edible coating based on whey protein isolate nanofibrils for antioxidation and inhibition of product browning

Edible coating based on whey protein isolate nanofibrils for antioxidation and inhibition of... Whey protein isolates (WPI) have been studied for film formation because of their favorable functional properties and industrial surplus; however, little is known regarding whey protein nanofibrils (WPNFs) as raw material for edible films. In the present study, WPNF-based edible coatings plasticized with glycerol (Gly) and trehalose (Tre) were studied. WPI (5%) can self-assemble into nanofibrils at 80 °C for 10 h under 220 rpm constant magnetic stirring. Compared with that of WPI, the hydrophobic and antioxidant activities of WPNFs were significantly increased. The microstructures and functions of WPI/Gly, WPNF/Gly, and WPNF/Gly/Tre films were characterized by scanning electron microscopy and atomic force microscopy, and by analyzing their contact angles, film thickness, transparency, moisture content, and solubility in water. Results showed that the formation of WPNFs increased surface smoothness, homogeneity, continuity, hydrophobicity, and transparency, and decreased the moisture content and water solubility of the films. To evaluate the performance of the edible coating, coated fresh cut apples were analyzed during storage. We found that the coatings containing WPNF (5%, w/v), Gly (4%, w/v) and Tre (3%, w/v) afforded the best protective action toward retarding the total phenolic content, browning, and product weight loss. Overall, the low cost, high biocompatibility, and consumer acceptance in taste tests support the ready application of these optimized WPNF films for commercial purposes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Food Hydrocolloids Elsevier

Edible coating based on whey protein isolate nanofibrils for antioxidation and inhibition of product browning

Loading next page...
 
/lp/elsevier/edible-coating-based-on-whey-protein-isolate-nanofibrils-for-26YEzRW9U2
Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier Ltd
ISSN
0268-005X
eISSN
1873-7137
D.O.I.
10.1016/j.foodhyd.2017.12.028
Publisher site
See Article on Publisher Site

Abstract

Whey protein isolates (WPI) have been studied for film formation because of their favorable functional properties and industrial surplus; however, little is known regarding whey protein nanofibrils (WPNFs) as raw material for edible films. In the present study, WPNF-based edible coatings plasticized with glycerol (Gly) and trehalose (Tre) were studied. WPI (5%) can self-assemble into nanofibrils at 80 °C for 10 h under 220 rpm constant magnetic stirring. Compared with that of WPI, the hydrophobic and antioxidant activities of WPNFs were significantly increased. The microstructures and functions of WPI/Gly, WPNF/Gly, and WPNF/Gly/Tre films were characterized by scanning electron microscopy and atomic force microscopy, and by analyzing their contact angles, film thickness, transparency, moisture content, and solubility in water. Results showed that the formation of WPNFs increased surface smoothness, homogeneity, continuity, hydrophobicity, and transparency, and decreased the moisture content and water solubility of the films. To evaluate the performance of the edible coating, coated fresh cut apples were analyzed during storage. We found that the coatings containing WPNF (5%, w/v), Gly (4%, w/v) and Tre (3%, w/v) afforded the best protective action toward retarding the total phenolic content, browning, and product weight loss. Overall, the low cost, high biocompatibility, and consumer acceptance in taste tests support the ready application of these optimized WPNF films for commercial purposes.

Journal

Food HydrocolloidsElsevier

Published: Jun 1, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial