G-Tech : Jurnal Teknologi Terapan
Vol 10 No 1 (2026): G-Tech, Vol. 10 No. 1 January 2026

Characterization of Cassava Starch–Based Edible Film (Manihot esculenta) and Seaweed Na-Alginate with Variations in Drying Time

Trustha Aurora Firdauza (Institut Teknologi Nasional Malang, Indonesia)
Widia Kristiana Putri (Institut Teknologi Nasional Malang, Indonesia)
Harimbi Setyawati (Institut Teknologi Nasional Malang, Indonesia)
Dwi Ana Anggorowati (Institut Teknologi Nasional Malang, Indonesia)



Article Info

Publish Date
20 Jan 2026

Abstract

Edible films are biodegradable and consumable packaging materials that protect food products from environmental influences. This study aimed to produce and characterize cassava starch–based edible films with sodium alginate from seaweed, glycerol as a plasticizer, and garlic extract as an antibacterial agent using the solvent casting method. The research variables included cassava starch mass (4, 5, and 6 g) and drying time (4, 9, 14, 19, and 24 hours). Film thickness, tensile strength, elongation, moisture content, solubility, and microbiological properties were analyzed. Results showed that starch mass and drying time significantly affected the physical and mechanical properties of the films. The optimum drying time was 14 hours, at which all samples met the Indonesian National Standard (SNI) for moisture content (10–<16%). The best performance was obtained with 6 g starch, producing films with a tensile strength of 5.034 MPa, elongation of 13.48%, and low microbial counts (4–9 cells/100 mL) with negative Escherichia coli, complying with SNI 2897:2008. The addition of garlic extract contributed to the films’ antimicrobial properties. Overall, the formulation demonstrates a balanced combination of mechanical, physical, and microbiological characteristics, providing a practical foundation for developing biodegradable cassava starch–based edible films for food packaging applications.

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Journal Info

Abbrev

g-tech

Publisher

Subject

Computer Science & IT Decision Sciences, Operations Research & Management Energy Engineering

Description

Jurnal G-Tech bertujuan untuk mempublikasikan hasil penelitian asli dan review hasil penelitian tentang teknologi dan terapan pada ruang lingkup keteknikan meliputi teknik mesin, teknik elektro, teknik informatika, sistem informasi, agroteknologi, ...