Maknunah, Zahrotul (2015) Karakterisasi profil protein gelatin komersial menggunakan SDS-PAGE (Sodium Dodecyl Sulfate-Polyacrylamide Gel Electrophoresis) dan analisis kadar proteinnya menggunakan spektrofotometer UV-Vis. Undergraduate thesis, Universitas Islam Negeri Maulana Malik Ibrahim.
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Abstract
INDONESIA:
Gelatin merupakan salah satu produk turunan protein yang digemari masyarakat. Seringkali gelatin yang beredar di pasaran tidak memiliki label kemasan sehingga tidak memiliki informasi karakteristik gelatin komersial yang jelas. Penelitian ini bertujuan untuk mengetahui profil protein gelatin komersial berdasarkan kombinasi perlakuan presipitasi protein dari jenis pelarut dan konsentrasi menggunakan Spektrofotometer UV-Vis dan SDS- PAGE.
Protein gelatin diperoleh dari presipitasi menggunakan pelarut organik dengan variasi jenis pelarut, yaitu etanol dan aseton serta variasi konsentrasi, yaitu 20, 40, 60, dan 80 %. Hasil presipitasi diuji menggunakan SDS-PAGE metode Laemli untuk mendapatkan berat molekul gelatin. Selanjutnya kadar protein gelatin dianalisis menggunakan Spektrofotometer UV-Vis metode Biuret. Data yang diperoleh dianalisis dengan ANOVA dan dilanjutkan dengan uji Duncan (α = 0,05).
Berdasarkan hasil analisis SDS-PAGE, tidak menunjukkan adanya korelasi antara jenis dan konsentrasi pelarut organik yang digunakan terhadap pola pita protein. Gelatin sapi standar memiliki 4 pita protein dimana terdapat kemiripan pada 130 kDa di setiap gelatin komersial. Pita protein gelatin komersial yang tidak dimiliki gelatin sapi standar untuk gelatin sapi komersial, gelatin T1 dan gelatin T2 adalah 6, 3, dan 6 buah pita protein. Hasil analisis kadar protein menunjukkan gelatin tanpa presipitasi pada gelatin sapi standar, gelatin sapi komersial, gelatin T1 dan gelatin T2 memiliki kadar protein berturut-turut ialah 80,51 %, 72,94 %, 73,92 %, dan 86,45 %. Variasi konsentrasi pelarut organik pada presipitasi protein memberikan pengaruh yang berbeda nyata (p < 0,05) terhadap kadar protein masing-masing gelatin dimana hasil presipitasi pada konsentrasi etanol dan aseton 80 % memiliki kadar protein tertinggi.
ENGLISH:
Gelatin is a protein-derived product which favored by society. However, commercial products-with gelatin contained does not provide the information of characteristic of gelatin on their packages. This research aims to characterize protein profile of commercial gelatin based on the variation of organic solvent and it concentration on protein precipitation using UV-Vis spectrophotometer and SDS-PAGE.
Commercial protein gelatin were obtained from precipitation using ethanol and acetone in concentration of 20, 40, 60, and 80 %. The protein content and it’s molecular weight were determined using Biuret and Laemli method. The data was analysed using ANOVA and Duncan test (α = 0,05).
The result showed that protein band pattern of gelatin were uncorrelated with organic solvent and each concentration of precipitation that used. standar bovine gelatin showed the presence of 4 protein bands where is similar with commercial bovine gelatin, T1 gelatin, and T2 gelatin in 130 kDa. Protein band which unpresented in protein band of standar bovine gelatin were 6, 3, and 6 protein band for commercial bovine gelatin, T1 gelatin, and T2 gelatin. According to analysis, protein content of standar bovine gelatin, commercial bovine gelatin, T1 gelatin, and T2 gelatin were 80,51 %, 72,94 %, 73,92 %, and 86,45 % respectively without precipitation. Variation of concentration of organic solvents on protein precipitation is significantly different (p < 0.05) in each gelatin where 80 % ethanol and 80 % acetone yielded the highest protein content.
Item Type: | Thesis (Undergraduate) | |||||||||
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Supervisor: | Jannah, Akyunul and Adi, Tri Kustono | |||||||||
Contributors: |
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Keywords: | Gelatin Komersial; Protein; Presipitasi Etanol Dan Aseton; SDS-PAGE; Spektrofotometer UV-Vis; Commercial Gelatin; Protein; Precipitation (Ethanol And Acetone); UV-Vis Spectrophotometer; SDS-PAGE | |||||||||
Departement: | Fakultas Sains dan Teknologi > Jurusan Kimia | |||||||||
Depositing User: | Ratih Novitasari | |||||||||
Date Deposited: | 27 Jun 2016 11:55 | |||||||||
Last Modified: | 27 Jun 2016 11:55 | |||||||||
URI: | http://etheses.uin-malang.ac.id/id/eprint/3163 |
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