In the present study, an active biopolymer film based on carboxymethyl cellulose (CMC) and ascorbic acid (AA) was synthesised at an incorporation rate of 15% (w/w). Several analytical instruments such as Fourier Transform Infrared Spectrometer (FTIR), Thermogravimetry Analyser (TGA), UV-Visible Spectrophotometer (UV-Vis), Scanning Electron Microscope (SEM) and Universal Testing Machine were used to characterise the physical and chemical properties of CMC-AA film. The addition of AA significantly reduced elongation at break (322%) and tensile strength (10 MPa) of CMC-AA film. However, CMC-AA film shows a better antimicrobial property against two bacteria, namely Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) as compared to CMC film. The CMC-AA film was able to preserve cherry tomato with low weight loss and browning index. Overall, results from this study highlight the feasibility of CSAA film for food preservation...

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This  research  investigated  the  potential  of  biopolymer-additive  films  for  food preservation. Three biopolymers, namely chitosan (CS), gelatin (GL) and methylcellulose (MC) were  used in this research. Ascorbic acid (AA), tannic acid (TA), banana leaf essential oil (BA), clove  essential oil (CL), turmeric extract (TU) and chamomile extract (CH) were used as natural additive.  This research is divided into five main studies, namely synthesis, characterisation, antimicrobial  activity, food preservation and biodegradation. The main scientific instruments used in this study  were Fourier transform infrared (FTIR) spectrometer, scanning electron microscope (SEM), universal  testing machine, water vapour permeability (WVP) analyser, oxygen permeability (OP) analyser,  ultraviolet-visible (UV-Vis) spectrophotometer and thermogravimetric analyser (TGA). The bacteria  used for antimicrobial activity were Staphylococcus aureus (Gram-positive) and Escherichia c.....

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