@Article{jrm.2025.02025-0118,
AUTHOR = {Fitra Yurid, Nadiatus Silmi, Heni Rachmawati, Nanda Nagara, Riyanti Ekafitri, Athanasia Amanda Septevani},
TITLE = {Sustainable Biopolymer Packaging Utilizing Non-Food-Competing Starches Derived from Rubber Cassava and Banana Wastes},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {14},
YEAR = {2026},
NUMBER = {2},
PAGES = {0--0},
URL = {http://www.techscience.com/jrm/v14n2/66337},
ISSN = {2164-6341},
ABSTRACT = {This study investigates the potential of starch extracted from underutilized agro-industrial resources as non-food-competing raw materials for the development of flexible bioplastics for food packaging applications. Starch was extracted from three biomass sources: rubber cassava (<i>Manihot glaziovii</i>), banana stem, and banana peel from Ambonese banana (<i>Musa acuminata</i> L.). Rubber cassava starch (S<sub>RC</sub>) exhibited the highest starch yield (50.68 ± 0.28%), significantly surpassing banana stem (S<sub>BS</sub>, 14.20 ± 0.25%) and banana peel (S<sub>BP</sub>, 3.07 ± 0.15%). The amylose contents of S<sub>RC</sub>, S<sub>BS</sub>, and S<sub>BP</sub> were 28.18%, 52.80%, and 56.57%, respectively, while their amylopectin contents were 71.83%, 47.20%, and 43.43%. FTIR spectra confirmed the absence of cyanogenic groups in S<sub>RC</sub>, indicating its safety for packaging applications. XRD analysis revealed that PS<sub>RC</sub> films were predominantly amorphous, while PS<sub>BS</sub> and PS<sub>BP</sub> showed higher crystallinity. The enhancement of mechanical properties, specifically PS<sub>BS</sub>, showed the highest tensile strength at 16.04 ± 0.56 MPa, whereas PS<sub>RC</sub> demonstrated the highest elongation at break at 23.57 ± 0.40%, which could be attributed to the inherent characteristics of the starch sources. Additionally, PS<sub>RC</sub> film exhibited the highest transparency at 60.2%, the greatest water solubility at 34.92%, and the lowest water contact angle at 41.58°, confirming its more hydrophilic nature compared to other films. This work highlights the potential of low-cost, sustainable, and non-food agro-industrial starch sources as promising candidates for the development of flexible, eco-friendly bioplastics.},
DOI = {10.32604/jrm.2025.02025-0118}
}