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      Pengembangan Metoda Analisa Sukrosa Dengan Hidrolisis Menggunakan Invertase

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      Date
      2024
      Author
      Purnawati, Rini
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      Abstract
      Analisa kandungan sukrosa produk pangan pada umumnya metoda yang dianjurkan menggunakan SNI 3547.2-2008. Prinsip kerjanya adalah sukrosa dihidrolisis menggunakan HCl menjadi gula pereduksi, dan gula pereduksi yang diperoleh dianalisa menggunakan metoda Luff Schoorl dengan cara titrimetri. Penggunaan HCl dapat menyebabkan karbohidrat lain yang terkandung dalam bahan akan ikut terhidrolisa sehingga menyebabkan intervensi nilai pengukuran. Pada penelitian ini dilakukan pengembangan metode analisa sukrosa dengan menggunakan enzin invertase untuk menghidrolisa sukrosa menjadi gula pereduksi, selanjutnya gula pereduksi dianalisa dengan metoda DNS secara spectrofotometri. Hasil validasi metoda analisis adalah linieritas dengan persamaan regresi y = 0,0023x + 0,0009 nilai R2 = 0,9983, presisi dengan nilai Relatif Standar Deviasi (RSD) = 1,004, akurasi dengan persen perolehan kembali (%recovery) 96,4 – 102,3 %. Nilai LOD dan LOQ masing-masing sebesar 6,52 dan 21,74 ppm
       
      The recommended method for sucrose analysis is a method described in SNI 3547.2- 2008. The principle of this analysis includes sucrose hydrolysis using HCl to form reducing sugar, which is further analyzed using the Luff Schoorl titrimetry method. However, hydrochloric acid can hydrolyze sucrose and other carbohydrate components present in the sample to produce glucose which can influence the accuracy of the method. In this study, the development of a sucrose analysis method using invertase enzim instead of HCL to hydrolysis sucrose into reducing sugars was carried out. The reducing sugars were then analyzed by the DNS method. The results of the analysis method validation showed a linearity with the regression equation y = 0.0023x + 0.0009, the value of R2 = 0.9983, the precision with the value of relative standard deviation (% RSD) = 1.004, and the accuracy with percent recovery 96.4 - 102.3%. The LOD and LOQ values are 6.52 and 21.74 ppm.
       
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      http://repository.ipb.ac.id/handle/123456789/159130
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      • Agroindustrial Technology [292]

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