PENGARUH PENAMBAHAN ASAM SITRAT TERHADAP KARAKTERISTIK FILM PLASTIK BIODEGRADABLE DARI PATI KULIT PISANG KEPOK (Musa acuminata balbisiana Colla)

Abstract

Kulit pisang dapat digunakan sebagai bahan baku pembuatan film plastik biodegradable karena kulit pisang mengandung pati. Pati yang berasal dari kulit pisang ini cepat berubah warna atau mengalami browning. Hal ini dicegah dengan penambahan asam sitrat selama proses ekstraksi pati dari kulit pisang. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan asam sitrat terhadap karakteristik, khususnya kuat tarik dan kemampuan biodegradasi film biodegradable yang terbuat dari pati kulit pisang (FPKP). FPKP dibuat dengan pati kulit pisang (PKP) sebagai bahan baku, dengan penambahan gliserol sebagai plasticizer serta CaCO 3 dan CMC sebagai filler, sedangkan PKP diperoleh dengan metode ekstraksi sederhana dengan atau tanpa penambahan asam sitrat. Konsentrasi gliserol divariasikan dari 20% w/w hingga 60% w/w, sedangkan CaCO 3 dan CMC ditambahkan dalam jumlah yang tetap. Hasil percobaan menunjukkan bahwa penambahan asam sitrat menyebabkan warna PKP lebih putih. Penambahan asam sitrat dapat meningkatkan kuat tarik hingga mencapai 4,202 MPa untuk FPKP dengan filler CaCO 3 dan 4,032 MPa untuk FPKP dengan filler CMC. Sedangkan untuk kemampuan biodegradasi berlaku sebaliknya. AbstractBanana peels can be used as raw material for biodegradable plastic film because the banana peels was consists of starch. Starch was derived from banana peels would be rapidly changing color or browning. Browning was prevented by the addition of citric acid during the process of starch extraction from banana peels. The aim of this study was to determine the effect of citric acid on mechanical properties and capabilities degradation of starch biodegradable film made from this starch (film plastik pati kulit pisang -FPKP). FPKP was made with banana peel starch (pati kulit pisang -PKP) as raw materials, with the addition of glycerol as a plasticizer, and both CaCO3 and CMC as filler, whereas the PKP was obtained by simple extraction methods with or without the addition of citric acid. Glycerol concentration was varied from 20% w/w to 60% w/w, while CaCO3 and CMC were added in a fixed amount. The results was showed that the addition of citric acid affects the color of a PKP produced. The addition of citric acid can enhance the tensile strength of FPKP, up to 4,202 MPa for FPKP with CaCO 3 filler and 4.032 MPa for FPKP with CMC filler.Forbiodegrability of FPKP, the affect of citric acid apply vice versa.

Physical Properties of Edible Sorgum Starch Film Added with Carboxymethyl Cellulose

“…4 Several studies have been reported on the utilisation of starch from various sources such as corn, yam, pea starch, cassava starch, banana peel and sorgum to synthesise coatings and films. [5][6][7][8][9][10] Starch is a polymer type of polysaccharide that has an important role in the manufacture of biodegradable films since it has the easy nature of forming a continuous matrix and its abundant availability in nature, hence it is appropriate if various starch sources are explored for the synthesis of edible film. 5 One potential source of starch is sorghum, which contains 72% starch.…”

Studi Literatur Karakterisasi Plastik Biodegradable Berbahan Dasar Pati Dengan Penambahan Filler Casio3 Dan Caco3

“…Salah satu syarat karakteristik plastik yang baik yaitu harus memiliki kekuatan tarik serta perpanjangan yang baik. Uji kuat tarik merupakan salah satu uji untuk mengetahui ketahanan suatu bahan terhadap gaya tarik yang dikenakan [8]. Pada Tabel 1 terlihat dimana pada setiap variabel penambahan nilai kuat tarik terus mengalami kenaikan dengan titik tertinggi pada penambahan jumlah kalsium silikat sebanyak 6% menghasilkan nilai kuat tarik 9,56 MPa tetapi mengalami penurunan pada variabel 8% menurut Udjiana [3] hal ini disebabkan karena kalsium silikat yang dicampurkan belum homogen, sehingga penambahan filler yang semakin banyak menghasilkan properties yang berbeda dengan tren sebelumnya dan juga dapat disebabkan karena kalsium silikat yang digunakan belum mencapai ukuran nano.…”

Bioplastic Biodegradation Based on Ganyong Umbi States with Addition of Sorbitol and CMC (Carboxy Methil Cellulose) In Soil Media

“…The addition of CMC serves as a filler that can increase the tensile strength of bioplastics. According to Hardjono (2016), states that bioplastics with the addition of CMC will increase the intensity of OH carboxyl groups and have an impact on increasing the tensile strength of bioplastics.…”

“…The more concentrations of CMC added cause more water to be absorbed and bound, which results from CMC being hygroscopic (Rahayu, 2016). Because of its hygroscopic nature, bioplastics with the addition of CMC have high humidity, high humidity levels are a good habitat for microbes to degrade bioplastics (Hardjono et al, 2016). Thus the ability of biodegradation tends to increase with increasing levels of CMC added.…”