A rapid turbidimetric method for the determination of the precipitation curve of carrageenans is proposed. It is based on the precipitation of a solution of carrageenan, under standard conditions, at a given concentration of potassium chloride and the measurement of the turbidity produced. The precipitation curves of five samples of carrageenans from Chondrus crispus, Gigartina skottsbergii and Iridea undulosa were determined. The results show that the method can be used to characterise the sample and (qualitatively) the distribution of the molecules; and so, to determine its commerical value. Copyright © 1975 John Wiley & Sons, Ltd
Documento: | Artículo |
Título: | A rapid turbidimetric method for the determination of the precipitation curves of carrageenans |
Autor: | Matulewicz, M.C.; Cerezo, A.S. |
Filiación: | Departamento de Quimica Orgánica, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon 2, Buenos Aires, Argentina |
Palabras clave: | carrageenan; potassium chloride; article; osmolarity; photometry; precipitation; season; seaweed; solubility; species difference; standard; time; Carrageenan; Fractional Precipitation; Nephelometry and Turbidimetry; Osmolar Concentration; Potassium Chloride; Seasons; Seaweed; Solubility; Species Specificity; Time Factors |
Año: | 1975 |
Volumen: | 26 |
Número: | 3 |
Página de inicio: | 243 |
Página de fin: | 250 |
DOI: | http://dx.doi.org/10.1002/jsfa.2740260302 |
Título revista: | Journal of the Science of Food and Agriculture |
Título revista abreviado: | J. Sci. Food Agric. |
ISSN: | 00225142 |
CAS: | carrageenan, 9000-07-1, 9049-05-2, 9061-82-9, 9064-57-7; potassium chloride, 7447-40-7; Carrageenan, 9000-07-1; Potassium Chloride, 7447-40-7 |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00225142_v26_n3_p243_Matulewicz |