DOI: https://doi.org/10.14710/teknik.v42i1.35994

Analysis of Temperature Regulation, Concentration, and Stirring Time at Atmospheric Pressure to Increase Density Precision of Alginate Solution

Analisis Pengaturan Temperatur, Konsentrasi, dan Waktu Pengadukan pada Tekanan Atmosferik untuk Meningkatkan Kepresisian Densitas Larutan Alginat

Indrasukma Permanadewi  -  Program Studi Doktor Teknik Kimia, Departemen Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, Indonesia
*Andri Cahyo Kumoro  -  Institute of Food and Remedies BioMaterial (INFARMA), Departemen Teknik Kimia, , Indonesia
Dyah Hesti Wardhani  -  Institute of Food and Remedies BioMaterial (INFARMA), Departemen Teknik Kimia, , Indonesia
Nita Aryanti  -  Program Studi Doktor Teknik Kimia, Departemen Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, Indonesia
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Abstract
Alginate is a high soluble organic linear polysaccharide polymer with adjustable density and viscosity. These unique properties have promoted Alginate uses widely in both food and non-food industries. Similar to other natural polysaccharides solution, alginate solution density is generally influenced by concentration, temperature and stirring time. Hence, this study aims to increasing the density precision of the alginate solution by setting temperature (30, 45, 60 and 75°C), alginate concentration (1, 2, 3, 4 and 5% mass) and stirring time (15, 30, 45 and 60 minutes) using the pycnometric method. The results showed that the higher temperature, the density would decrease, conversely, the higher of concentration and stirring time, the density of the alginate solution would increase. Therefore, it can be concluded if you want a density of 0.9228 g/ml alginate solution, the concentration of alginate used is 2% with a temperature of 30°C and a stirring time of 30 minutes
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Keywords: density; alginate; temperature; concentration; stirring time

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