Comparative study of the physical and tensile properties of Jicama (Pachyrhizus erosus) starch film prepared using three different methods

• Main Authors: Abral, Hairul, Riyan, Soni Satria, Mahardika, Melbi, Hafizulhaq, Fadli, Affi, Jon, Asrofi, Mochamad, Handayani, Dian, Salit, Mohd Sapuan, Stephane, Ilfa, Sugiarti, Eni, Muslimin, Ahmad Novi
• Format: Article
• Language: English
• Published: WILEY-VCH Verlag 2019
• Online Access: http://psasir.upm.edu.my/id/eprint/80973/1/ANOVA.pdf; http://psasir.upm.edu.my/id/eprint/80973/; http://www.advancedsciencenews.com/

The objective of this work is to study the physical and tensile properties of jicama (Pachyrhizus erosus) starch film prepared using three different methods. First, a film is prepared from starch granules after sifting using a sieve shaker. A second film is prepared from starch granules after ultra-sonication. Another film is made by sonicating the starch gel. Ultrasonication is performed using an ultrasonic probe. These three different methods have a significant effect on the properties of the film (p  0.05). The film from the starch granules after sifting using 63μm mesh size and ultrasonication (labeled as S-63U film) shows the optimum properties. Opacity for S-63U film is almost half (48.6%) that of the equivalent non-sonicated film. S-63U film has the highest tensile strength (3.1 MPa), the lowest moisture absorption (18% after 8 h in a humid chamber) and water vapor permeability. FESEM morphology of the fracture surface of the sonicated film display a more homogeneous structure compared to films without ultrasonication