Development and Characterization of CASSAVA Starch-Based Biodegradable Films Reinforced with Kaolin and Andiroba Oil

Area of Science:

• Materials Science
• Polymer Science
• Food Science

Background:

• Nonrenewable packaging poses environmental and health risks.
• Developing biodegradable packaging with enhanced properties is crucial.
• Improving mechanical and thermal characteristics of bioplastics remains a challenge.

Purpose of the Study:

• To develop and characterize biodegradable films from corn and cassava starch.
• To incorporate andiroba oil and kaolin for improved properties.
• To enhance physical, structural, barrier, and bioactive attributes of the films.

Main Methods:

• Utilized corn and cassava starch as the base matrix.
• Incorporated andiroba oil and kaolin as active ingredients and reinforcement.
• Employed glycerol as a plasticizer and distilled water as a solvent.
• Applied a factorial design to optimize film composition and assess properties.
• Evaluated thickness, water solubility, water vapor permeability, mechanical strength, and biodegradability.

Main Results:

• Starch morphology and kaolin characteristics were consistent with literature.
• Andiroba oil met quality standards for incorporation, despite a high acidity index.
• Starch and plasticizer mass significantly influenced film properties.
• Kaolin reinforcement substantially improved mechanical properties and biodegradability.
• Developed biofilms exhibited potential for high-quality food packaging.

Conclusions:

• Biodegradable films based on corn/cassava starch, andiroba oil, and kaolin were successfully developed.
• The study demonstrated the effectiveness of kaolin in enhancing mechanical and biodegradability aspects.
• These novel films show promise for sustainable and effective food packaging applications.