IVAN FADILAH, . (2022) PENGARUH PENAMBAHAN KUERSETIN TERHADAP KOMPOSIT FILM KITOSAN MIKROKRISTAL SELULOSA DARI SERABUT KELAPA (Cocos nucifera). Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.
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Abstract
Penelitian ini bertujuan untuk mensintesis film biodegradabel kitosan dan mikrokristal selulosa dari serabut kelapa (Cocos nucifera) dengan penambahan kuersetin sebagai filler. Film kitosan dicampur dengan mikrokristal selulosa dengan komposisi 1% w/w dan ditambahkan bioflavonoid kuersetin dengan berbagai konsentrasi (0%;1%;3%;5%;7% w/w) dengan metode solution casting. Penambahan kuersetin terhadap film kitosan-mikrokristal selulosa diharapkan dapat menambah sifat antioksidan dan meningkatkan sifat antimikroba. Mikrokristal selulosa diisolasi dari bahan dasar serabut kelapa dengan tahap delignifikasi, pemutihan (bleaching) yang kemudian dihidirolisis oleh asam sulfat 58% w/w sehingga dihasilkan mikrokristal selulosa. Mikrokristal selulosa yang didapatkan berbentuk batang dengan panjang partikel 20-70 μm dan indeks kristalinitas sebesar 57,87 % yang ditunjukkan melalui hasil FTIR, XRD dan SEM. Hasil penelitian untuk sintesis film kitosan-mikrokristal selulosa-kuersetin menunjukkan penambahan kuersetin 7% meningkatkan besar kuat tarik sebesar 17,21 MPa, laju biodegradasi sebesar 1,62 mg/hari, aktivitas antioksidan sebesar 79,95%, antibakteri terhadap Escherichia coli dan Staphylococcus aureus. Namun penambahan kuersetin 7% menurunkan sifat pengembangan film dan permeabilitas uap air dengan konsentrasi kuersetin optimum untuk pengembangan film adalah 1% dan permeabilitas uap air adalah 3%. ************************************************************ This study aims to synthesize biodegradable films of chitosan and microcrystalline cellulose from Coco fibers (Cocos nucifera) with the addition of quercetin as filler. Chitosan based film is added with microcrystalline cellulose 1% w/w and concentration variation of quercetin (0;1;3;5;7) % w/w by solution casting method. The addition of quercetin is expected to improve the antibacterial and antioxidant properties of the chitosan-microcrystalline cellulose film. Microcrystalline cellulose from coconut fiber is isolated by delignification, bleaching step then hydrolyzed with 58% w/w sulphuric acid. The resulted microcrystalline cellulose is rod-shaped particles with 20-107 μm and crystallinity index of 57,87% are shown through the result of FTIR, XRD and SEM. Whilst for the biodegradable film of chitosan-microcrystalline cellulose-quercetin showed that the addition of 7% quercetin can enhance the tensile strength value to 17,21 MPa, biodegradation rate to 1,62 mg/hari, antioxidant activity to 79,95%, and antibacterial activity against Escherichia coli and Staphylococcus aureus. However the addition of 7% quecetin reduce the swelling degree and water vapor permeability with the optimum of quercetin for each are 1% and 3%.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Additional Information: | 1). Dr. Yusmaniar, M.Si.; 2). Dr. Setia Budi, M.Sc. |
| Subjects: | Sains > Kimia |
| Divisions: | FMIPA > S1 Kimia |
| Depositing User: | sawung yudo |
| Date Deposited: | 07 Nov 2024 04:04 |
| Last Modified: | 07 Nov 2024 04:04 |
| URI: | http://repository.unj.ac.id/id/eprint/51966 |
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