Fitria, Aida (2017) Pengaruh suhu dan lama fermentasi terhadap produksi eksopolisakarida dari tetes tebu oleh lactobacillus plantarum dan identifikasi senyawa gula penyusunnya. Undergraduate thesis, Universitas Islam Negeri Maulana Malik Ibrahim.
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Abstract
INDONESIA:
Tetes tebu merupakan hasil samping dari proses pengolahan gula yang mengandung sumber karbon cukup tinggi, sehingga dapat dijadikan media fermentasi alternatif bagi Lactobacillus plantarum untuk memproduksi eksopolisakarida. Eksopolisakarida (EPS) adalah polisakarida yang disekresikan dari mikroba ke lingkungan. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh suhu dan lama fermentasi terhadap produksi EPS dari tetes tebu. Produksi eksopolisakarida oleh Lactobacillus plantarum pada penelitian ini menggunakan Rancangan Acak Kelompok Faktorial (RAKF) yang terdiri dari dua faktor, yaitu suhu (25, 30, dan 35 oC) dan lama fermentasi (18 dan 24 jam). Masing-masing perlakuan dilakukan tiga kali ulangan. Data kadar EPS, kadar total gula EPS dan kadar gula terpakai selama fermentasi dianalisis menggunakan Two Way ANOVA dengan selang kepercayaan 5 %, dan dilanjutkan dengan uji Beda Nyata Jujur (BNJ) 5 %. Hasil penelitian menunjukkan suhu dan Lama fermentasi berpengaruh nyata terhadap terhadap kadar EPS dan kadar gula terpakai selama fermentasi, lama fermentasi tidak berpengaruh nyata terhadap kadar total gula EPS. Diperoleh kadar EPS tertinggi 740 mg/L, kadar total gula EPS tertinggi 5,97 %, dan kadar gula terpakai tertinggi 14,67 % pada perlakuan suhu 30 oC dan lama fermentasi 18 jam. Spektra hasil analisis FTIR menunjukkan bahwa EPS termasuk polisakarida dengan adanya vibrasi peregangan C-H pada cincin gula mannosa atau galaktosa dan sebuah gugus fungsi vibrasi peregangan (C-O) dari gugus eter.
ENGLISH:
Molasses is a side product from the sugar manufacturing process that contain high enough of carbon source, so it become fermentation medium alternative for Lactobacillus plantarum to produce exopolysaccharide. Exopolysaccharide (EPS) is polysaccharide that secreted from microbe to their external environment. The aim of this research were to determine effect of temperature and long fermentation on exopolysaccharide production from molasses. Production of exopolysaccharide by Lactobacillus plantarum in this study used Randomized Factorial Design that consist of two factors, those are temperature (25, 30, and 35oC) and long fermentation (18 and 24 hour). Each treatment was done in three replication. EPS content, total sugar content of EPS, and used sugar content from fermentation process was analyzed used Two Way ANOVA within 5 % interval of confidence, and continued by Tukey test 5 %. The result showed that temperature and long fermentation affect on EPS content and used sugar content. Long fermentation gave not significant different on total sugar content of EPS. The maximum of EPS content 740 mg/L, total sugar content from EPS 5,97 % and used sugar content from fermentation process 14,67 % at temperature 30 oC and long fermentation 18 hours. FTIR analysis showed that functional group suggested to polysaccharide, With presence C=C stretching vibration in the sugar ring mannosa and galactosa and stretching vibration (C–O) from eter are the typical absorption peaks of a polysaccharide.
Item Type: | Thesis (Undergraduate) | |||||||||
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Supervisor: | Jannah, Akyunul and Abtokhi, Ahmad | |||||||||
Contributors: |
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Keywords: | Lactobacillus plantarum; eksopolisakarida; tetes tebu; analisis FTIR; Lactobacillus Plantarum; Exopolysaccharide; Molasses; Ftir Analysis | |||||||||
Departement: | Fakultas Sains dan Teknologi > Jurusan Kimia | |||||||||
Depositing User: | Imam Rohmanu | |||||||||
Date Deposited: | 20 Apr 2017 16:31 | |||||||||
Last Modified: | 20 Apr 2017 16:31 | |||||||||
URI: | http://etheses.uin-malang.ac.id/id/eprint/6491 |
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