Influence of heat curing on structure and physicochemical properties of phenolic acid loaded proteinaceous electrospun fibers.
Effects of heat treatment on structure and physicochemical properties of zein (Ze) and gallic acid loaded zein (Ze-GA) electrospun fiber mats were investigated. The electrospun fiber mats displayed different surface and physicochemical properties after being heat-cured at 150 °C for 24 h, which were closely related to the initial amount of loaded gallic acid. The gallic acid was released from the Ze-GA fiber mats in a constant manner, but heat curing decreased the rate of release. Heat curing remarkably increased the molecular weight of the Ze and Ze-GA electrospun fiber mats. Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) analysis of the fiber mats indicated variations in zein protein secondary structure after heat curing. (13)C solid state NMR (SS-NMR) confirmed the presence of a different chemical environment among the fiber mats. The fabrication of heat-cured zein based electrospun fibers in this study may find applications in the food packaging industry.
School of Chemical Sciences, the University of Auckland, University of Auckland , Private Bag 92019, Auckland, New Zealand.
Yun Ping
YP
Neo
Conrad O
CO
Perera
Michel K
MK
Nieuwoudt
Zoran
Z
Zujovic
Jianyong
J
Jin
Sudip
S
Ray
Marija
M
Gizdavic-Nikolaidis
D055664:Electrochemical Techniques; D018857:Food Packaging / Q000295:instrumentation; D005707:Gallic Acid / Q000737:chemistry; D006358:Hot Temperature; D062385:Hydroxybenzoates / Q000737:chemistry*; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D015028:Zein / Q000737:chemistry*
D062385:Hydroxybenzoates; D011108:Polymers; D005707:Gallic Acid; D015028:Zein; C017616:phenolic acid