Incorporation of citrus essential oils into bacterial cellulose-based edible films and assessment of their physical properties

The use of edible films in food protection and preservation has recently gained more interest since they offer several advantages over synthetic packaging materials. Biocellulose (BC) offers great opportunity as edible film due to their unique physical and mechanical properties. In this study, bioce...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2017-03, Vol.60 (1), p.12018
Main Authors: Indrarti, L, Indriyati
Format: Article
Language:English
Subjects:
Carboxymethyl cellulose
Carboxymethylcellulose
Cellulose
Cellulosic resins
Citrus fruits
Color
Convection
Drying ovens
Elongation
Essential oils
Fruits
Glycerol
Lime
Mechanical properties
Oils & fats
Packaging materials
Physical properties
Plasticizers
Solubility
Tensile strength
Water vapor
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Summary:The use of edible films in food protection and preservation has recently gained more interest since they offer several advantages over synthetic packaging materials. Biocellulose (BC) offers great opportunity as edible film due to their unique physical and mechanical properties. In this study, biocellulose films were prepared by solution casting with addition of 30% carboxymethyl cellulose (CMC) and 30% glycerol as the homogenizer and plasticizer, respectively. Furthermore, various citrus essential oils (EOs) including lemon, lime, and sweet orange were added at 50% w/w of BC dried weight. The solutions were then cast on the tray and allowed to dry in the air convection oven at 40°C overnight. The films were characterized for water solubility, tensile strength (TS), elongation at break (EB), water vapour transmission rate (WVTR), and color. Those characteristics may influence consumer acceptability of the packaged products. Results revealed that addition of lemon and sweet orange EOs into BC-based edible film decreased water solubility and TS, but improved EB, as these oils acted as plasticizers in the film. However, different trend was observed for BC-based film incorporated with lime oil, which had higher solubility and TS, but lower EB and WVTR compared with that of control film. Addition of citrus EOs into BC-based films did not have much effect on color properties as stated in L*, a*, and b* values.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/60/1/012018