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Effect of glycerol on the physicochemical properties of cereal starch films

Author

Listed:
  • Mona AGHAZADEH

    (Department of Food Technology. Faculty of Food Science and Technology, University of Putra Malaysia (UPM), Serdang, Selangor, Malaysia.)

  • Roselina KARIM

    (Department of Food Technology. Faculty of Food Science and Technology, University of Putra Malaysia (UPM), Serdang, Selangor, Malaysia.)

  • Russly ABDUL RAHMAN

    (Department of Food Technology. Faculty of Food Science and Technology, University of Putra Malaysia (UPM), Serdang, Selangor, Malaysia.)

  • Muhammad Tauseef SULTAN

    (Department of Food Technology. Faculty of Food Science and Technology, University of Putra Malaysia (UPM), Serdang, Selangor, Malaysia.)

  • Stuart Kenth JOHNSON

    (School of Molecular and Life Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, Australia)

  • Maryam PAYKARY

    (Department of Food Technology. Faculty of Food Science and Technology, University of Putra Malaysia (UPM), Serdang, Selangor, Malaysia.)

Abstract

The physical properties of corn, wheat and rice starch edible films with different level of glycerol were evaluated. Starch films exhibited an apparent endothermic peak in the range of 151-199°C with corn starch film with 1.6% glycerol having a relatively lower To and higher Tp. X-ray diffraction spectroscopy indicated that the corn, wheat, rice starch powders had ~ 39-49% crystallinity, whereas Fourier transform infrared spectra showed peaks associated with the tightly bound water present in the rice, corn, wheat starches. Overall, glycerol addition could enhance the water vapour pressure barrier properties of the films, but their tensile strength was reduced. Corn starch films were identified as the most suitable choice for edible packaging as its thermal characteristics indicated suggested a more acceptable sealability. Rice starch films is proposed as the better choice for coating as it showed better flexibility as indicted by lower tensile and higher elongation properties.

Suggested Citation

  • Mona AGHAZADEH & Roselina KARIM & Russly ABDUL RAHMAN & Muhammad Tauseef SULTAN & Stuart Kenth JOHNSON & Maryam PAYKARY, 2018. "Effect of glycerol on the physicochemical properties of cereal starch films," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 36(5), pages 403-409.
    • Handle: RePEc:caa:jnlcjf:v:36:y:2018:i:5:id:41-2017-cjfs
    DOI: 10.17221/41/2017-CJFS
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