Sifat Mekanik dan Kemampuan Biodegradasi Antimicrobial Bioplastic Berbasis Kulit Buah Naga Merah (Hylocereus polyrhizuz) dan Ekstrak Daun Biduri (Calotropis gigantea)
(Mechanical Properties and Biodegradability Antimicrobial Bioplastic Based on Red Dragon Fruit Peel (Hylocereus polyrhizuz) and Biduri Leaf Extract (Calotropis gigantea))
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Yuvita Lira Vesti Arista
Program Studi Teknologi Hasil Pertanian, Fakultas Pertanian, Univeristas PGRI Banyuwangi, Indonesia
Dewi Mutamimah
Program Studi Teknologi Hasil Perikanan, Fakultas Pertanian, Univeristas PGRI Banyuwangi, Indonesia
DOI: https://doi.org/10.19184/j-agt.v17i02.42930
ABSTRACT
Plastic is often chosen as packaging for food products because it’s considered practical, non-corrosive, low cost, and able to withstand product water migration, but it’s difficult to degrade. So, it need biodegradable plastic to handle that, but most of the biodegradable plastics that have been developed only focus on ease of degradation, do not focus on the microbial contamination problem during use it. One alternative that can be developed is to make antimicrobial bioplastic based on starch from dragon fruit peel and biduri leaves as an antimicrobial source. Until now there is no further information regarding the mechanical properties and degradation ability of antimicrobial bioplastic based on starch from dragon fruit peel and biduri leaf extract. Therefore this research was carried out to determine the mechanical properties including tensile strength, modulus young, and elongation as well as degradation ability against Aspergillus niger. The research was conducted using the completely randomized design factorial method which consists 2 factors, where the first factor was the dragon fruit peel starch variation (P1: 15%, P2: 30%, P3: 45%, P4: 60%) and the second factor was the biduri leaf extract addition (B1: 3%, B2: 6%, B3: 9%, B4: 12%). Mechanical properties (elongation and tensile strength) was carried out using Mat. Testing Machine, while modulus young testing uses tension testing. Antimicrobial bioplastic degradation capability testing using Aspergillus niger is calculated based on weight loss. The research results showed that the treatment with the addition of 15% dragon fruit peel starch (P1) had good mechanical properties ranging from tensile strength, modulus young, and elongation, while the addition of biduri extract had no effect. The best biodegradation ability was the addition of 60% starch (P4) on antimicrobial bioplastic. The use of starch in greater concentrations can reduce mechanical properties but increase biodegradation capacity.
Keywords: antimicrobial packaging, biodegradable polymer, cross linking, starch
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Published
20-12-2023
Issue
Vol. 17 No. 2 2023: Jurnal Agroteknologi
Pages
94-109
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Copyright (c) 2023 Jurnal Agroteknologi
How to Cite
Arista, Y.L.V. & Mutamimah, D. (2023). Sifat mekanik dan kemampuan biodegradasi antimicrobial bioplastic berbasis kulit buah naga merah (Hylocereus polyrhizuz) dan ekstrak daun biduri (Calotropis gigantea). Jurnal Agroteknologi, 17(2), 94-109. https://doi.org/10.19184/j-agt.v17i02.42930
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