OKTAVIA ANGGRAINI, . (2022) EKSTRAKSI POLIFENOL TEH (Camellia sinensis) DAN APLIKASINYA SEBAGAI FILM FUNGSIONAL BERBASIS KITOSAN-TEPUNG TERIGU. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.
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Abstract
Penelitian ini bertujuan untuk mengekstraksi polifenol dari daun teh hijau dan menyintesis film fungsional dari kitosan, tepung terigu dan polifenol daun teh hijau (Camellia sinensis). Pada penelitian ini mengambil ekstrak polifenol daun teh hijau dengan teknik maserasi. Maserasi dilakukan dengan pelaru metanol lalu dipartisi menggunakan pelarut n-heksana dan etil asetat. Didapatkan kadar padatan ekstrak etil asetat sebesar dan ektrak metanol sebesar 99,94 % dan 98,96 %. Selain itu kadar polifenol dari ekrak etil asetat dan metanol masing-masing sebesar sehingga ekstrak etil asetat berpotensi menjadi sumber polifenol teh dari sintesis film pada penelitian ini. Selanjutnya ekstrak etil asetat dikarakterisasi dengan spektrofotometri FT-IR dan uji tarik. Sintesis film kitosan-tepung terigu-polifenol teh dilakukan dengan mendispersian kitosan ke dalam larutan asam asetat dan mendispersikan tepung terigu ke dalam aquades. Dicampurkan kedua dispersi dan ditambahkan polifenol teh dengan variasi konsentrasi 0,5%; 1%; 2% dan 3% berat kering kitosan dan pati diaduk dan dipanaskan dengan magnetic stirrer. Dispersi pembentuk film dituangkan ke teflon plate dan dikeringkan selama 48 jam. Pada film konsentrasi tanin 1% hingga 3% dapat dikategorikan sebagai film kemasan makanan karena nilai ketebalan film, kuat tarik dan persen elongasi yang telah memenuhi JIS (Japanesse Industrial Standard) sedangkan nilai kuat tarik untuk film konsentrasi tannin 0,5% tidak memenuhi JIS (Japanesse Industrial Standard). Menunjukkan bahwa film campuran ini berpotensi digunakan sebagai film kemasan untuk industri makanan dan obat-obatan. **************************** This study aimed to extract polyphenols from green tea leaves and synthesize functional films from chitosan, wheat flour and green tea leaf polyphenols (Camellia sinensis). In this study, extracts of green tea leaf polyphenols by maceration technique. Maceration was carried out with methanol solvent and then partitioned using n-hexane and ethyl acetate as solvents. The solid content of the ethyl acetate extract was obtained and the methanol extract was 99.94% and 98.96%, respectively. In addition, the levels of polyphenols from ethyl acetate and methanol extracts were respectively equal to so that the ethyl acetate extract has the potential to be a source of tea polyphenols from film synthesis in this study. Furthermore, the ethyl acetate extract was characterized by FT-IR spectrophotometry and tensile test. The synthesis of chitosan-wheat flour-tea polyphenol film was carried out by dispersing chitosan into acetic acid solution and dispersing wheat flour into distilled water. The two dispersions were mixed and tea polyphenols were added with a concentration variation of 0.5%; 1%; 2% and 3% dry weight of chitosan and starch were stirred and heated with a magnetic stirrer. The film-forming dispersion was poured onto a Teflon plate and dried for 48 hours. The 1% to 3% tannin concentration film can be categorized as food packaging film because the film thickness, tensile strength and percent elongation values have met JIS (Japanese Industrial Standard) while the tensile strength value for 0.5% tannin concentration film does not meet JIS (Japanesse Industrial Standard). Shows that this mixed film has the potential to be used as a packaging film for the food and pharmaceutical industries.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Additional Information: | 1). Dr. Yusmaniar, M.Si. ; 2). Fera Kurniadewi, M.Si. |
| Subjects: | Sains > Kimia |
| Divisions: | FMIPA > S1 Kimia |
| Depositing User: | PKL . |
| Date Deposited: | 14 Nov 2024 02:52 |
| Last Modified: | 14 Nov 2024 02:52 |
| URI: | http://repository.unj.ac.id/id/eprint/52095 |
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