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All Journal Jurnal BETA (Biosistem dan Teknik Pertanian) Jurnal Ilmiah Teknologi Pertanian Agrotechno
Hertiyana Nur Annisa
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering

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Pengaruh Jenis Plasticizer Dan Konsentrasi Selulosa Terhadap Karakteristik Bioplastik Pati Singkong–Karagenan I Putu Wiradarma Putra; Ni Luh Yulianti; Ida Bagus Putu Gunadnya; Hertiyana Nur Annisa
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 14 No 1 (2026): April
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jbeta.2026.v14.i01.p10

Abstract

Penggunaan kemasan plastik konvensional yang terus-menerus menimbulkan masalah lingkungan karena sulit terurai secara alami. Bioplastik merupakan salah satu alternatif yang berbasis bahan alami. Penelitian ini bertujuan untuk mengetahui serta menentukan perlakuan terbaik pengaruh jenis plasticizer (minyak jarak dan asam stearat) serta konsentrasi selulosa 0,5%, 1%, dan 1,5% (w/v) terhadap karakteristik bioplastik pati singkong–karagenan. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dua faktor. Faktor pertama adalah jenis plasticizer (P) yang terdiri atas dua jenis, yaitu minyak jarak (P1) dan asam stearat (P2). Faktor kedua adalah konsentrasi selulosa (F) yang terdiri atas tiga taraf, yaitu 0,5%, 1%, dan 1,5% (w/v). Data hasil penelitian dianalisis menggunakan metode Analysis of Variance (ANOVA). Apabila hasil analisis menunjukkan pengaruh yang signifikan (P < 0,05), maka dilanjutkan dengan uji lanjutan menggunakan Duncan’s Multiple Range Test (DMRT). Hasil penelitian menunjukkan bahwa jenis plasticizer dan konsentrasi selulosa berpengaruh nyata terhadap nilai kuat tarik, perpanjangan saat putus, elastisitas, ketahanan air, dan ketebalan namun tidak berpengaruh nyata terhadap nilai WVTR. Kombinasi minyak jarak dengan selulosa 0,5% (w/v) (P1F1) menghasilkan nilai kuat tarik tertinggi (15,1 MPa) dan elastisitas (412,1 MPa), sedangkan asam stearat dengan selulosa 0,5% (w/v) (P2F1) memberikan perpanjangan saat putus tertinggi (12,4%) dan WVTR terendah (2,13 g/m²/hari). Kesimpulannya, perlakuan jenis plasticizer minyak jarak dengan konsentrasi selulosa 0,5% (w/v) adalah kombinasi terbaik untuk bioplastik ramah lingkungan dengan sifat mekanik terbaik dalam penelitian ini.
The Level of Acceptance of Transparent Trash Bins by The City of Denpasar Community on Car Free Day to Improve Trash Sorting Fernandes Ryanta Mamanda Ginting; Bintang Madrini Ida Ayu Gede; Setiyo Yohanes; Hertiyana Nur Annisa
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol. 11 No. 2 (2026): October 2026
Publisher : Fakultas Teknologi Pertanian, Universitas Udayana Gedung GA, Fakultas Teknologi Pertanian, Universitas Udayana Jl. Raya Bukit Jimbaran, Jimbaran, Kuta Selatan, Bali Telp/Fax: (0361) 701801

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/

Abstract

This study aims to measure the level of public acceptance regarding the use of transparent-walled waste bins, an innovation designed to enhance the effectiveness of waste sorting during Car Free Day (CFD) events in Denpasar City—specifically at Niti Mandala Renon City Park and Lumintang City Park. Employing a quantitative descriptive approach supplemented by qualitative data, the study gathered information through questionnaires and observations. A purposive sampling technique was used to select respondents, with the sample size determined via the Slovin formula, resulting in 127 participants. The level of acceptance for this innovation was assessed by integrating the Technology Acceptance Model (TAM) across three key variables: Knowledge (X1), Behavior (X2), and Opinion (X3). The findings indicate a highly positive linear correlation across all variables. Public knowledge levels fell within the 67–75% range (categorized as "good"), confirming that the facilities are easy to use. Regarding behavior, 79–80% of the public demonstrated actual discipline in sorting waste according to its classification. Furthermore, 57–60% of respondents provided positive evaluations concerning "perceived usefulness" and "perceived ease of use," although 12–15% expressed concerns that the bins might detract from the area's aesthetics if waste collection is delayed. Given that the majority of scores fall into the "good" category, it is concluded that the level of acceptance among the public in Denpasar City is high. These transparent waste bins have proven effective in evolving from mere physical receptacles into instruments of visual communication, fostering a sustainable shift in the public's waste-sorting habits.
Co-Authors Bintang Madrini Ida Ayu Gede Fernandes Ryanta Mamanda Ginting I Putu Wiradarma Putra Ida Bagus Putu Gunadnya Ni Luh Yulianti Yohanes Setiyo