Sintesis dan Karakteristik Bioplastik dari Tepung Sorghum – Tepung Kanji dengan Penambahan Kitosan dan Plasticizer Gliserol

Cristya Anggie Rosally, Wulan Sari, Titik Mahargiani

Abstract


Sorghum is an Indonesia agricultural product which is still rarely used by Indonesia citizen. A lot content of starch that found in a sorghum can be used as raw material for making biodegradable plastic which is interesting solutions as a innovative food wrapper. Starch from sorghum were chosen because they can be degraded well, and eatable. Biodegradable plastic prepared by dissolving sorghum starch and tapioca starch with total starch ratio 10g in 100 ml of aquadest at a temperature of 60°C to 70°C then stirred for 20 minutes. Sorghum starch and tapioca starch ratios are 3:7, 4:6, 5:5, 6:4, 7:3. Chitosan variables are 0,5g, 1g, 2g, 2,5g, and 3g, and sorbitol variables are 3ml, 4ml, 5ml, 6ml, and 7ml. The analysis includes tensile strength and percent elongation. Then continued with the biodegradable analysis for 14 days. Good composition for this biodegradable plastic are 10 g starch with sorghum starch and tapioca starch ratio at 5:5, 100 ml acetic acid 1%, , 1,5g chitosan, and 4ml sorbitol with the result of tensile strength is 2,2812 MPa and 43,95 % for percent elongation. Biodegradable plastic could degraded well at day 10. So this biodegradable plastic proved more eco friendly than synthetic plastic.


Keywords


biodegradable, chitosan, sorbitol, tapioca, sorghum.

References


Mat. B. Zakaria. Chitin and chitosan: The versatile enviromentally friendly modern materials. Universiti Kebangsaan Malaysia. 1995.

McHugh TH, Krochta JM. Permeability properties of edible film in “Edible coating and films to improve food quality”ed. Technomic Publishing Co, Inc. Lancaster. Pennsylvania. 1994

Murni SW, Pawignyo H, Widyawati D, Sari N. Pembuatan edible film dari tepung jagung dan kitosan. Prosiding Seminar Nasional Teknik Kimia “Kejuangan” 2013 ; B17-1.

Nofita T. Pengaruh pemberian carboxymethyl cellulose dan sorbitol pada pembuatan edible film dengan bahan dasar whey terhadap kadar air, pH, ketebalan dan waktu kelarutan. Universitas Andalas. 2011.

Nurfajrin ZD, Sukadarti S, Mahendrajaya GS, Sulistyowati E. Karakterisasi dan sifat biodegradasi edible film dari pati kulit pisang nangka (musa paradisiaca l.) dengan penambahan kitosan dan plasticizer gliserol. Prosiding Seminar Nasional Teknik Kimia “Kejuangan” 2015 ; L1 1-7

Pudjiastuti W. Polimer monokomposit sebagai master batch polimer biodegradable untuk kemasan makanan. Jurnal Riset Industri 2012; 6 (1): 51-60.

Saputra A, Lutfi M, Masruroh M. Studi pembuatan dan karakteristik sifat mekanik plastik biodegradable berbahan dasar ubi suweg (amorphophallus campanulatus). Jurnal Keteknikan Pertanian Tropis dan Biosistem 2015; 3 (1): 1-6

Setiawan H, Faizal R, Amrullah A. Penentuan kondisi optimum modifikasi konsentrasi plasticizer sorbitol pva pada sintesa plastik biodegradable berbahan dasar pati sorgum dan chitosan limbah kulit udang. Jurnal Sains dan Teknologi (Sainteknol) 2015; 13 (1): 29-38

Sinaga, Rinaldi Febrianto. 2014. Pengaruh Variasi Temperatur Gelatinisasi Pati terhadap Sifat Kekuatan Tarik dan Pemanjangan pada saat Putus Bioplastik Pati Umbi Talas.Jakarta. Prosiding Seminar Nasional Sains dan Teknologi. Fakultas Teknik Universitas Muhammadiyah Jakarta, TK-002

Suseno TIP, Fibria N, Kusumawati N. Pengaruh penggantian sirup glukosa dengan sirup sorbitol dan penggantian butter dengan salastrim terhadap sifat fisikokimia dan organoleptik kembang gula karamel. Jurnal Teknologi Pangan dan Gizi 2008; 7 (1): 1 – 18.


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