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Eco-compatible cassava starch films for fertilizer controlled-release.

Florencia Versino1, Marina Urriza2, María A García3

  • 1Centro de Investigación y Desarrollo en Criotecnología de Alimentos, CIDCA (UNLP-CONICET-CICPBA), Facultad de Ciencias Exactas, UNLP, 47 y 116, CP.1900 La Plata, Argentina; Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP), 47 y 115, CP.1900 La Plata, Argentina.

International Journal of Biological Macromolecules
|May 11, 2019
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Summary

Researchers developed biodegradable cassava starch films with urea for controlled fertilizer release. These eco-friendly films reduce soil pollution and enhance soil properties, offering a sustainable agricultural solution.

Keywords:
Agronomic applicationsCassava starchUrea

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Area of Science:

  • Agricultural Science
  • Materials Science
  • Environmental Science

Background:

  • Non-degradable plastics and overuse of fertilizers cause significant environmental issues, including soil pollution.
  • There is a need for sustainable agricultural materials that can manage fertilizer application and minimize environmental impact.

Purpose of the Study:

  • To develop bio-based and biodegradable composite films for controlled fertilizer release in agriculture.
  • To utilize cassava starch and bagasse to create eco-compatible materials for agricultural applications.

Main Methods:

  • Cassava starch and bagasse composite films were prepared with varying urea content (0-50 wt%).
  • The films' properties, stability, biodegradation rate, and urea release in soil were analyzed.
  • Urea was used as both the active compound and a plasticizer.

Main Results:

  • Urea acted as an effective plasticizer, increasing film flexibility over time.
  • Biodegradation rate in soil increased with higher urea content.
  • Films with 50 wt% urea showed 57% weight loss and 95% urea release within 15 days.

Conclusions:

  • Cassava starch and bagasse composite films are suitable for controlled urea release in soil.
  • This approach offers an eco-compatible solution for sustainable fertilizer management in agriculture.