TY - JOUR
T1 - Optimization of formulations for pullulan films containing lauric arginate and nisin Z
AU - Pattanayaiying, Rinrada
AU - H-Kittikun, Aran
AU - Cutter, Catherine N.
N1 - Funding Information:
This research was supported financially by the Center for Food Manufacturing, Department of Food Science , the Pennsylvania State University, University Park, PA, USA. The authors thank and appreciate the support and guidance of Drs. Joshua D. Lambert and Gregory R. Zeigler, Department of Food Science, the Pennsylvania State University and Mr. Somsak Kerdchan, Material Science and Technology Department, Prince of Songkla University. The authors also thank Mr. Joshua Scheinberg, Department of Food Science, the Pennsylvania State University for his support in the statistical analyses.
Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/10/1
Y1 - 2015/10/1
N2 - Pullulan films containing lauric arginate. alone (LAE) or in combination with nisin Z (LAE-nisin Z), were investigated to determine the effects of the film component(s) on mechanical properties (i.e. ultimate tensile strength [UTS]; Young's modulus [YM]; and elongation at break [EL]). Analyses indicated that pullulan and locust bean gum influenced UTS, YM, and negatively influenced EL of LAE films (. P<0.05). However, pullulan concentrations did not affect UTS of LAE-nisin Z films, but increased YM and decreased the EL values. Glycerol negatively affected UTS for the LAE and LAE-nisin Z films, but positively affected the EL of the films. Locust bean gum significantly decreased EL values of all the formulations. YM also was dependent on the balance of the film ingredients. The films with the best mechanical properties were L150-2.5-0, which contained 2mg/mL LAE and 320 AU/mL nisin Z, pullulan 150g/L, glycerol 2.5g/L, and no locust bean gum, as well as LN120-2.5-1, which contained 2mg/mL LAE and 320 AU/mL nisin Z, pullulan 120g/L, glycerol 2.5g/L and locust bean gum at 1g/L. The findings of this study may be of interest to researchers who are interested in the mechanical properties of antimicrobial, edible films.
AB - Pullulan films containing lauric arginate. alone (LAE) or in combination with nisin Z (LAE-nisin Z), were investigated to determine the effects of the film component(s) on mechanical properties (i.e. ultimate tensile strength [UTS]; Young's modulus [YM]; and elongation at break [EL]). Analyses indicated that pullulan and locust bean gum influenced UTS, YM, and negatively influenced EL of LAE films (. P<0.05). However, pullulan concentrations did not affect UTS of LAE-nisin Z films, but increased YM and decreased the EL values. Glycerol negatively affected UTS for the LAE and LAE-nisin Z films, but positively affected the EL of the films. Locust bean gum significantly decreased EL values of all the formulations. YM also was dependent on the balance of the film ingredients. The films with the best mechanical properties were L150-2.5-0, which contained 2mg/mL LAE and 320 AU/mL nisin Z, pullulan 150g/L, glycerol 2.5g/L, and no locust bean gum, as well as LN120-2.5-1, which contained 2mg/mL LAE and 320 AU/mL nisin Z, pullulan 120g/L, glycerol 2.5g/L and locust bean gum at 1g/L. The findings of this study may be of interest to researchers who are interested in the mechanical properties of antimicrobial, edible films.
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U2 - 10.1016/j.lwt.2015.04.016
DO - 10.1016/j.lwt.2015.04.016
M3 - Article
AN - SCOPUS:84930373872
SN - 0023-6438
VL - 63
SP - 1110
EP - 1120
JO - LWT
JF - LWT
IS - 2
ER -