Enhanced gelatin based films integrated with xanthan and cellulose derivatives as potential packaging materials | ||
| Egyptian Pharmaceutical Journal | ||
| Volume 22, Issue 4, October 2023, Pages 640-649 PDF (2.31 M) | ||
| Authors | ||
| Salah A.A. Mohamed; Eman A. Ali; Abdelmageed M. Othman; Alaa E. Elsayed | ||
| Abstract | ||
| Background Films based on gelatin can be useful for pharmaceutical and food packaging, but they have some drawbacks. Objective In this study, we aimed to evaluate three series of edible composite films based on gelatin for pharmaceutical and food packaging. Materials and methods Three series of composite films based on gelatin were prepared by blending with three different polysaccharides, xanthan, hydroxyethyl methyl cellulose (HEMC), and hydroxypropyl methylcellulose (HPMC). Film composites were prepared by solution casting with glycerol (30% weight). Burst strength, mechanical, contact angel, water vapour permeability rate (WVPR), and air permeability test were tested for the three series of composite films. The antibacterial activity of the produced sheets against Gram-positive bacteria B. mycoides, a nonfilamentous fungus called C. albicans, and Gram-negative bacteria E. coli was examined. Results This work reports the successful preparation of stand-alone natural antimicrobial edible composite films with excellent mechanical properties. The addition of HPMC and HEMC had enhanced the thermal stability of gelatin-xanthan composite films. Mechanical properties; tensile strength and elongation percent were investigated. The results showed that the addition of 0.1% of HEMP and HPMC to gelatin–xanthan composite enhanced the elongation% to equal 59.33% and 25.33%, respectively, while the tensile values were 5.570 and 6.617 mPa, respectively. Xanthan addition had improved the antibacterial activity of gelatin films. The results showed that the different composite series have varying relative effects on microbial development effectiveness. Conclusion According to the results, these composite films can be considered as promising natural active edible packaging materials. | ||
| Keywords | ||
| blend; gelatin; hydroxyethyl methylcellulose; Hydroxypropyl methylcellulose; edible packaging; xanthan | ||
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