Valorization of Cassava Peel and Shrimp Shell Waste for Bioplastic Film Development: Extraction, Characterization, and Response Modeling
Andre E Picar | Bianca Isabel Molina | Joachim Florenzo Dejuras | Maria Julliana Veran | John Ray C. Estrellado
Discipline: Education
Abstract:
Accumulation of waste food materials, such as cassava and shrimp peels, continues to contribute to rise in greenhouse emissions. This study aims to produce a bioplastic film made from extracted cassava peel starch (CPS) and shrimp shell chitosan (SSCHT), plasticized with sorbitol (SOR) using a constrained D-optimal mixture design. Films were assessed in terms of tensile strength, elongation at break, contact angle, opacity, and functional groups. Significant models were gener-ated in terms of tensile strength (p = 0.0148), contact angle (p = 0.1049) and opacity (p = 0.6529). Cassava peel starch had a significant (p < 0.001) effect on tensile strength due to hydrogen bonding with chi-tosan, whereas elongation at break was significantly (p = 0.0017) affected by sorbitol due to its structural similarity to starch and larger molecular weight as compared to glycerol. Contact angle increased with the incorporation of shrimp shell chitosan (p = 0.4647) by minimizing hydrophilic regions for external water molecule penetration. Opacity was significantly (p = 0.0013) reduced by the incorporation of cassava peel starch due to the refraction of swollen starch granules. Fourier-Transform Infrared Spectroscopy (FTIR) verified the interactions in the CPS/SSCHT/SOR bioplastic film, while thermogravimetric analysis (TGA) provided insights on thermal stability of the bioplastic for industrial use. This study provides insight into the potential of food waste valorization using green extraction methods in producing environmentally friendly bioplastics for hard packaging applications.
References:
- André E Picar, Department of Science, Technology, Engineering, and Mathematics, The Academy, De La Salle University – Laguna, Laguna Boulevard, LTI Spine Road, Barangays Biñan and Malamig, Biñan City, Laguna, 4024, Philippines
- André E. Picar is a scholar at De La Salle University Senior High School enrolled under the STEM strand. He graduated Junior High School as a gold awardee and Outstanding JHS Leader. He is currently the President of the Student Council. His research interests include biomedical engineering and materials science.
- Bianca Isabel Molina, Department of Science, Technology, Engineering, and Mathematics, The Academy, De La Salle University – Laguna, Laguna Boulevard, LTI Spine Road, Barangays Biñan and Malamig, Biñan City, Laguna 4024, Philippines
- Bianca Isabel B. Molina is a senior high school student under STEM at De La Salle University - Laguna Campus. In junior high school, she graduated with a Silver Award and multiple subject awards while also contributing to community health initiatives. Additionally, she is a varsity volleyball player and has participated in various research projects.
- Joachim Florenzo Dejuras, Department of Science, Technology, Engineering, and Mathematics, The Academy, De La Salle University – Laguna, Laguna Boulevard, LTI Spine Road, Barangays Biñan and Malamig, Biñan City, Laguna 4024, Philippines
- Joachim Florenzo C. Dejuras is a senior high school student at DLSU-IS under the STEM strand. He has been studious with his education, graduating from JHS with a Silver and Academic Award in Science. He also excels in sports as the baseball team captain, balancing extracurriculars and academic activities.
- Maria Julliana Veran, Department of Science, Technology, Engineering, and Mathematics, The Academy, De La Salle University – Laguna, Laguna Boulevard, LTI Spine Road, Barangays Biñan and Malamig, Biñan City, Laguna 4024, Philippines
- Maria Julliana T. Veran is a 12th-grade STEM student at De La Salle University Laguna, a consistent honors awardee, and an Innovatech research grant winner. She stays active in extracurriculars while engaging in scientific research. Her focus is on applying research to real-world problems through innovation and practical solutions.
- John Ray Estrellado, Department of Science, Technology, Engineering, and Mathematics, The Academy, De La Salle University – Laguna, Laguna Boulevard, LTI Spine Road, Barangays Biñan and Malamig, Biñan City, Laguna 4024, Philippines
- John Ray C. Estrellado is a licensed chemical engineer currently taking his Master of Science in Chemical Engineering in De La Salle University. His research interests include encapsulation technologies and hydrocolloids. He is teaching practical research courses under the Department of Science, Technology, Engineering, and Mathematics at DLSU Integrated School.
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