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Evaluation of gallic acid loaded zein sub-micron electrospun fibre mats as novel active packaging materials.

Food chemistry (2013-07-23)
Yun Ping Neo, Simon Swift, Sudip Ray, Marija Gizdavic-Nikolaidis, Jianyong Jin, Conrad O Perera
ABSTRACT

The applicability of gallic acid loaded zein (Ze-GA) electrospun fibre mats towards potential active food packaging material was evaluated. The surface chemistry of the electrospun fibre mats was determined using X-ray photon spectroscopy (XPS). The electrospun fibre mats showed low water activity and whitish colour. Thermogravimetric analysis (TGA) and Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) spectroscopy revealed the stability of the fibre mats over time. The Ze-GA fibre mats displayed similar rapid release profiles, with Ze-GA 20% exhibiting the fastest release rate in water as compared to the others. Gallic acid diffuses from the electrospun fibres in a Fickian diffusion manner and the data obtained exhibited a better fit to Higuchi model. L929 fibroblast cells were cultured on the electrospun fibres to demonstrate the absence of cytotoxicity. Overall, the Ze-GA fibre mats demonstrated antibacterial activity and properties consistent with those considered desirable for active packaging material in the food industry.

MATERIALS
Product Number
Brand
Product Description

Supelco
Gallic acid, certified reference material, TraceCERT®
Sigma-Aldrich
Gallic acid, 97.5-102.5% (titration)
Sigma-Aldrich
Zein