Titre :
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Determination of the absolute molecular weight averages and molecular weight distributions of alginates used as ice cream stabilizers by using multiangle laser light scattering measurements
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Auteurs :
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T. Turquois ;
H. Gloria
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Type de document :
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article/chapitre/communication
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Année de publication :
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2000
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Format :
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p. 5455-5458
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Langues:
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= Anglais
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Catégories :
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CHIMIE
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Mots-clés:
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ANALYSE CHIMIQUE
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Résumé :
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High-performance size exclusion chromatography with multiangle laser light scattering detection (HPSEC-MALLS) was used for characterizing complete molecular weight distributions for a range of commercial alginates used as ice cream stabilizers. For the samples investigated, molecular weight averages were found to vary between 115 000 and 321 700 g/mol and polydispersity indexes varied from 1.53 to 3.25. These samples displayed a high content of low molecular weights. Thus, the weight percentageof material below 100 000 g/mol ranged between 6.9 and 54.4 % .
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Source :
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Journal of agricultural and food chemistry, vol.48, n°11
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