Fabrication of anthocyanin-rich W1/O/W2 emulsion gels based on pectin-GDL complexes: 3D printing performance

Food Res Int. 2023 Jun:168:112782. doi: 10.1016/j.foodres.2023.112782. Epub 2023 Apr 4.

Abstract

The stability of anthocyanin-rich W1/O/W2 double emulsions prepared with Nicandra physalodes (Linn.) Gaertn. Seeds pectin was investigated, including droplet sizes, ζ-potential, viscosity, color, microstructures and encapsulation efficiency. Furthermore, the gelation behavior, rheological behavior, texture behavior and three-dimensional (3D) printing effects of the W1/O/W2 emulsion gels induced with Glucono-delta-lactone (GDL) were studied. The L*, b*, ΔE, droplet sizes and ζ-potential of the emulsions were gradually increased, while other indicators were gradually decreased during 28 days of storage under 4 ℃. The storage stability of sample under storage at 4 ℃ was higher than 25 ℃. The G' of W1/O/W2 emulsion gels gradually boosted with increased GDL addition, and reached the highest after the addition of 1.6 % GDL. In creep-recovery sweep, the minimum strain of 1.68 % and the highest recovery rate of 86 % were also found for the emulsion gels with 1.6 % GDL. Accordingly, the models "KUST", hearts, flowers printed by emulsion gels after 60 min addition of 1.6 % GDL had the best printing effects. The W1/O/W2 emulsion gels based on pectin-GDL complexes exhibited good performance in protecting anthocyanins and suggested as a potential ink for food 3D printing.

Keywords: 3D printing; Anthocyanins; Rheological properties; W(1)/O/W(2) emulsion gels.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anthocyanins*
  • Emulsions / chemistry
  • Gels
  • Pectins* / chemistry

Substances

  • Emulsions
  • Anthocyanins
  • Pectins
  • beta-glucono-1,5-lactone
  • Gels