FOOD SCIENCE ›› 2016, Vol. 37 ›› Issue (22): 34-40.doi: 10.7506/spkx1002-6630-201622006

• Processing Technology • Previous Articles     Next Articles

Effects of Ultrasonic-Microwave Treatment on Mechanical Properties of Corn Distarch Phosphate/Corn Straw Cellulose Films

Sun Haitao1,2, Shao Xinru2, JIANG Ruiping2, Zhang dongjie3, MA Zhongsu1,*   

  1. 1. College of Food Science and Engineering, Jilin University, Changchun 130062, China;
    2. Changbai Mountain Edible Plant Resources Development Engineering Center, Tonghua Normal University, Tonghua 134000, China;
    3. College of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, China
  • Received:2016-04-22 Online:2016-11-16 Published:2017-02-22

Abstract: Corn distarch phosphate/corn straw cellulose edible films were prepared using ultrasonic-microwave treatment. The effects of the combined treatment on mechanical properties of the films were studied. Based on tensile strength and elongation at break, the optimum conditions were obtained by response surface analysis as follows: ultrasonic power, 600 W; microwave power, 170 W; and radiation time, 9 min. Under these conditions, the tensile strength and elongation at break of edible films reached 31.42 MPa and 74.33%, respectively, which were increased by 62.29% and 56.88%, respectively, as compared with those of films without the use of ultrasonic-microwaves treatment. As observed and characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD), the edible films prepared by the combined treatment displayed smooth surface and dense structure, suggesting strong intermolecular forces. To conclude, the mechanical properties of corn distarch phosphate/corn straw cellulose edible films could be improved by ultrasonic-microwave treatment.

Key words: edible films, ultrasonic-microwave treatment, mechanical properties, corn distarch phosphate (CDP), corn straw cellulose (CSC), structure characterization

CLC Number: