LukiErse (2008) Pemanfaatan limbah cair Virgin Coconut Oil (VCO) sebagai bahan baku Selulosa bakteri dan aplikasinya sebagai Edible Cellulose Film (ECF) : majian lama fermentasi dan lama perendaman film dalam gliseri. Sarjana thesis, Universitas Brawijaya.
Abstract
Selulosa merupakan komponen organik terbesar di bumi. Diperkirakan kebutuhan akan selulosa di dunia mencapai 1,5 x 1012 ton per tahun untuk aplikasi di berbagai bidang industri diantaranya farmasi, dan bidang pangan. Limbah cair VCO dapat digunakan sebagai media penghasil selulosa bakteri dengan tanpa penambahan nutrisi berupa gula bahkan perlu dilakukan pengenceran. Karena limbah cair VCO mengandung total gula hampir mencapai 20%. Indreswari (2000) telah mempelajari kemungkinan penggunaan selulosa nata de coco sebagai bahan pengemas. Namun bentuk lembaran kering nata tidak memiliki elastisitas yang baik dan rapuh sehingga belum efektif digunakan sebagai pengemas. Tujuan dari penelitian ini adalah mengetahui pengaruh lama fermentasi dan lama perendaman dalam larutan gliserin terhadap karakteristik edible film selulosa bakteri. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) yang disusun secara faktorial dengan 2 faktor, yaitu: Faktor 1 : Lama fermentasi (8, 10,12 hari) dan Faktor 2: Lama perendaman dalam larutan gliserin (1, 1.5, 2 jam), sehingga didapatkan 9 kombinasi perlakuan. Data yang diperoleh dilakukan analisa ragam (ANOVA), dilanjutkan uji BNT 5% atau DMRT 5%. Hasil penelitian menunjukkan bahwa perlakuan lama fermentasi memberikan pengaruh yang berbeda sangat nyata (α=0,01) pada parameter kadar air, kadar selulosa, ketebalan, "tensile strength", elongasi, daya serap air dan permeabilitas uap air. Sedangkan lama perendaman film dalam gliserin memberikan pengaruh sangat nyata (α=0,01) terhadap parameter kadar air, kadar selulosa, "tensile strength" dan elongasi, serta memberikan pengaruh nyata pada ketebalan, daya serap air dan permeabilitas uap air.ECF yang dibuat dari selulosa bakteri (nata) memiliki karekteristik ketebalan 0,024-0,046 mm, kadar air 5,491-7,027 %, kadar selulosa 90,923-94,417 %, ”tensile strength” 16,415-22,545 N/cm2, elongasi 10,139-13,782 %, permeabilitas uap air 0,005-0,008 gr/cm2, dan kecerahan 47,520-48,400. Kata kunci : selulosa bakteri, edible film, gliserin, plasticizer, tensile strength, elongasi
English Abstract
Bacterial cellulose (BC) belongs to specific products of primary metabolism and is mainly a protective coating (Bielecki et al., 2000). It has been estimated that the yearly world requirement of cellulose is 1,5 x 1012 ton for many industrial application such as pharmacy and food industry. Liquid by product of VCO could be used as medium of fermentation to produce BC without additional of sugar, it even need to dissolve in water, because it has high sugar content up to 20%. Indreswari (2000) had studied that BC might be used as food packaging material. Unfortunately, dried sheets of BC were brittle and less of elasticity, so it was not good properties for packaging material. Therefore, need to create the thickness of BC sheets and the use of glycerine as plasticizer to improve the film fleksibilities. The objective of this research was to studied the duration of fermentation to produced BC and duration of cellulose film immersion into glycerine solution as well as studied the ECF properties. This research statistically employed Group Randomized Design with two factors and each factors was replicated three times. The first factor was durations of the fermentations (8, 10 and 12 days), and the second treatment was durations of the film immersion into glycerine solution (1; 1,5 and 2 hours). The analyzed parameters were water content, cellulose content, tensile strength, elongation, thickness, water vapor permeability and lightness (L*). It showed that the durations of the fermentations and film immersion in glycerine solution significantly affected (α=0,01) both water and cellulose content, tensile strength and elongation. The interaction of both treatments also affected (α=0,05) of those parameters.The ECF made from bacterial cellulose has thickness, water content, cellulose content, tensile strength, elongation, water vapour permeability and lightness were 0,024-0,046 mm; 5,491-7,027%; 90,923-94,417%; 16,415-22,545 N/cm2; 10,139-13,782%; 0,005-0,008 gr/cm2; and 47,520-48,400, respectively. Key words : Bacterial cellulose, edible cellulose film, glycerine, plasticizer, tensile strength, elongation, water vapour permeability.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FTP/2008/61/050800836 |
| Subjects: | 300 Social sciences > 338 Production > 338.1 Agriculture |
| Divisions: | Fakultas Teknologi Pertanian > Teknologi Hasil Pertanian |
| Depositing User: | Unnamed user with email repository.ub@ub.ac.id |
| Date Deposited: | 03 Apr 2008 10:07 |
| Last Modified: | 21 Oct 2021 07:25 |
| URI: | http://repository.ub.ac.id/id/eprint/148053 |
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