PVA/starch/propolis/anthocyanins rosemary extract composite films as active and intelligent food packaging materials |
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| Authors: | Pakeeza Mustafa Muhammad B K Niazi Zaib Jahan Ghufrana Samin Arshad Hussain Tahir Ahmed Salman R Naqvi |
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| Affiliation: | 1. Chemical Engineering Department, School of Chemical and Material Engineering, National University of Science and Technology, Islamabad, Pakistan;2. Department of Chemistry, University of Engineering and Technology (Lahore) Faisalabad Campus, Faisalabad, Pakistan;3. Department of Industrial Biotechnology, Atta ur Rehman School of Applied Bio-sciences, National University of Science and Technology, Islamabad, Pakistan |
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| Abstract: | Active and intelligent food packaging films has taken more importance over conventional packaging. The aim of this study was to develop active and intelligent food packaging films based on bio-degradable polymers like polyvinyl alcohol and starch, incorporated with natural additives, that is, propolis extract (PE) and Anthocyanin. Boric acid was used as a cross-linker. The results proved the compatibility of films mixture. The mechanical strength was also measured and highest value was achieved 6.1 MPa for films containing 20% PE. Moreover, the maximum zone of inhabitation, that is, 21 and 15 mm, was also achieved at same composition against Escherichia coli and methicillin-resistant Staphylococcus aureus, respectively. Furthermore, all films had shown great color response against different pH ranging from 2 to 14. Finally, food spoilage test was performed using pasteurized milk. Films responded visibly by changing color and protected milk from spoilage. Hence, formulated bio-degradable active and intelligent films can be used as food packaging material. |
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