Meta-Analysis Pengaruh Suhu dan Metode Ekstraksi terhadap Karakteristik Natrium Alginat dari Rumput Laut Sargassum sp.

Abstract

Alginat merupakan hidrokoloid yang dihasilkan oleh Sargassum sp.. Kualitas natrium alginat dapat dipengaruhi oleh metode dan suhu ekstraksi. Tujuan penelitian ini menentukan pengaruh perbedaan metode (asam dan kalsium) dan suhu ekstraksi (40-50°C dan 60-70°C) terhadap karakteristik Na-alginat (rendemen, derajat putih, kadar abu, pH, viskositas, dan kadar air) dari Sargassum sp.. Penelitian dilakukan dengan metode meta-analysis berupa subgroup analysis, dan hasil ditampilkan dengan forest plot. Natrium alginat yang optimal dihasilkan oleh metode asam dan suhu 60-70°C. Metode asam menghasilkan derajat putih, kadar abu, pH, viskositas, dan kadar air lebih optimal, namun rendemen lebih rendah dari metode kalsium. Hasil rendemen, derajat putih, kadar abu, dan viskositas optimal pada suhu 60-70°C. Perbedaan metode menghasilkan perbedaan signifikan pada derajat putih dan viskositas, namun tidak berbeda signifikan pada nilai rendemen, kadar abu, pH, dan kadar air. Perbedaan suhu menghasilkan perbedaan signifikan pada nilai rendemen dan derajat putih, namun tidak berbeda signifikan pada kadar abu, pH, viskositas dan kadar air

Alginate is a hydrocolloid produced by Sargassum sp.. The quality of sodium alginate can be influenced by the method and extraction temperature. The purpose of this research was to study the effect of different methods (acid and calcium), and extraction temperatures (40-50°C and 60-70°C) on the characteristics of sodium alginate (yield, whiteness, ash, pH, viscosity, and water content) from Sargassum sp.. This study used subgroup analysis by meta-analysis. The results are shown by forest plot. The result showed that the optimal characteristics of sodium alginate are produced by the acid method and extraction temperature 60-70°C. The acid method produces more optimal whiteness, ash, pH, viscosity, and water content, but lower yield. Extraction temperatures 60- 70°C produces optimal results on yield, whiteness, ash, and viscosity. Different methods resulted in significant differences in the whiteness and viscosity, but did not significantly differ in the yield, ash, pH, and moisture content. Temperature difference resulted in a significant difference in the yield and whiteness, but did not give a significant difference in the ash, pH, viscosity, and water content.