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Process Optimization for Development of Guar Gum-Based Biodegradable Hydrogel Film Using Response Surface

Junaid Aman1,2, Navin Chandra Shahi2, Umesh Chandra Lohani2

  • 1School of Applied and Life Sciences, Uttaranchal University, Dehradun 248007, India.

Bioinorganic Chemistry and Applications
|August 26, 2022
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Summary

A new guar-gum hydrogel film offers sustainable food packaging. This biodegradable film demonstrates excellent physical, optical, and biodegradability properties for fruit and vegetable packaging.

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Area of Science:

  • Materials Science
  • Polymer Science
  • Food Science

Background:

  • Biodegradable hydrogels are crucial for sustainable packaging solutions.
  • Guar gum, a natural polysaccharide, presents a viable base for eco-friendly films.
  • Current food packaging often relies on non-biodegradable materials, posing environmental challenges.

Purpose of the Study:

  • To develop and optimize a biodegradable hydrogel film from guar gum for food packaging.
  • To investigate the impact of key formulation components on film properties.
  • To assess the suitability of the developed film for packaging fruits and vegetables.

Main Methods:

  • Utilized Box-Behnken design and response surface methodology (RSM) to optimize film formulation.
  • Investigated the effects of initiator (potassium persulfate), crosslinker (N-N methyl bis acrylamide), and plasticizer (glycerol) concentrations.
  • Evaluated film properties including biodegradability, color difference (ΔE), hardness, swelling index, and transparency.

Main Results:

  • The developed model accurately predicted film properties with a low prediction error (-3.19% to 2.99%).
  • Optimized formulation (0.15% initiator, 0.02% crosslinker, 2.88% plasticizer) yielded satisfactory biodegradability, color, hardness, swelling, and transparency.
  • Significant effects of independent variables on all tested parameters were observed.

Conclusions:

  • A guar-gum-based biodegradable hydrogel film possesses adequate physical, optical, and biodegradable characteristics.
  • The developed hydrogel film shows significant potential for successful application in the food packaging industry.
  • Optimization using RSM provides an accurate and efficient method for developing functional biodegradable films.