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      Grafting degree Measurement of acrylamide onto polysaccharide using Infrared Spectrometry

      Pengukuran Derajat Grafting Akrilamida pada Matriks Polisakarida dengan Spektrometri Inframerah.

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      Date
      2011
      Author
      Farid, Muhamad
      Mas’ud, Zainal Alim
      Nur, H. M. Anwar
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      Abstract
      Utilization of carbohydrate-based agricultural wastes has been carried out with the manufacture of derivatives by grafting and crosslinking with acrylamide. The success of the process is monitored by setting the levels of nitrogen in the product. This research work is trying to look for possible use of spectrometry Fourier Transform Infrared technique to determine level of nitrogen in the products. Preparation of powder with a reflectance technique gives satisfactory results for grafting product, also for saponified products very satisfactory. ANOVA test of the PLS for each processing the data on IR spectral of the grafted-crosslinked product and its saponified showed a smaller probability value of 0.05, it is indicate the model developed by the independent variable (wave number) is significant effect on nitrogen content at 95% confidence level. Results of Partial Least Square (PLS) model for each treatment to give the coefficient of determination (R2) ranged from 0.961-0.998, it is the model with the wave number of independent variables can predict nitrogen content as well. Results of PLS analysis also provide information that the processing of IR spectrum data does not affect the difference between the predictions and the values of the nitrogen content.
       
      Indonesia sebagai negara agraris yang merupakan negara penghasil singkong. Salah satu produk turunan singkong adalah tepung tapioka. Proses produksi tapioka dari singkong akan menghasilkan produk samping yang disebut onggok. Salah satu kandungan utama dalam onggok adalah karbohidrat, dalam bentuk selulosa dan pati. Sebagai pakan ternak pun, onggok tidak bisa langsung digunakan, melainkan harus difermentasi terlebih dahulu. Untuk meningkatkan nilai tambah dari onggok, maka harus dilakukan proses modifikasi kandungan utamanya sehingga diperoleh turunan yang mempunyai nilai jual tinggi. Modifikasi tepung singkong (tepung tapioka) dapat dilakukan melalui reaksi pencangkokan dan penautanulang akrilamida membentuk super adsorben yang ramah lingkungan. Keberhasilan proses pencangkokan dan penautan ulang bisa dipantau dengan menentukan kandungan nitrogen dalam produk reaksi. Kandungan nitrogen ditentukan menggunakan metode klasik yaitu Kjeldahl. Untuk menghasilkan data dengan metode Kjeldahl membutuhkan bahan kimia, energi, waktu (sekitar 4 jam) dan kehatian-hatian yang tinggi.
       
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      http://repository.ipb.ac.id/handle/123456789/52505
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      • MT - Mathematics and Natural Science [4149]

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