Edible arabinoxylan-based films. 1. Effects of lipid type on water vapor permeability, film structure, and other physical characteristics.
Arabinoxylans (AX) are natural fibers extracted from maize bran, an industrial byproduct. To promote this polymer as a food ingredient, development of edible coatings and films had been proposed. Indeed, composite arabinoxylan-based films were prepared by emulsifying a fat: palmitic acid, oleic acid, triolein, or a hydrogenated palm oil (OK35). Lipid effects on water vapor permeability (WVP), surface hydrophobicity (contact angles), lipid particle size, and mechanical properties were investigated. Results showed that OK35-AX emulsion films had the lowest WVP. Emulsified films presented a bimodal particle size distribution; however, the smallest particle mean diameter (0.54 microm) was observed in OK35-AX emulsion films. Contact angles of water comparable to those observed for LDPE films (>90 degrees ) are measured on the OK35-AX film surface. Finally, only triolein-AX emulsion films had elongation higher than films without lipid. These results suggest that OK35 enhances functional properties of AX-based films and should be retained for further research.
Péroval
Claudine
C
ENSBANA-GPAB, Université de Bourgogne, 1 esplanade Erasme, F-21000 Dijon, France. cperoval@univ-bourgogne.fr
Debeaufort
Frédéric
F
Despré
Denis
D
Voilley
Andrée
A
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004655:Emulsions; D018857:Food Packaging; D005524:Food Technology; D019301:Oleic Acid / Q000737:chemistry; D000073878:Palm Oil; D019308:Palmitic Acid / Q000737:chemistry; D010316:Particle Size; D010539:Permeability; D010938:Plant Oils / Q000737:chemistry; D011108:Polymers; D013499:Surface Properties; D014304:Triolein / Q000737:chemistry; D014867:Water; D014990:Xylans / Q000737:chemistry*; D003313:Zea mays / Q000737:chemistry
D004655:Emulsions; D010938:Plant Oils; D011108:Polymers; D014990:Xylans; D014867:Water; D014304:Triolein; D019301:Oleic Acid; D019308:Palmitic Acid; D000073878:Palm Oil; C085118:arabinoxylan