Abstract
The objective of this research was to investigate the effect of different ratios of grapefruit seed extract (GFSE) on functional properties of bionanocomposite (BNC) films prepared with corn starch (CS) incorporated with chitosan (CH)-nanoclay. Experimental results exhibited that the addition of GFSE properly dispersed with CS combined with CH bionanocomposite films. The presence of GFSE from 0 to 1.5% v/v exhibited increase in crystallinity and TS while decease in EB, FS and WVP. Furthermore, an addition of 2%v/v GFSE revealed decrease in its physical properties. When bread samples were packed, synthetic plastic exhibited the proliferation of fungal growth in 6 days, whereas CS/CH/1.5% v/v GFSE bionanocomposite film exhibited the same for at least 20 days. This study presents that CS/CH/1.5% v/v GFSE nanoclay film could potentially be useful for novel eco-friendly active packaging for confectionary industries to extend the shelf life to maintain its quality and safety of food products.
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