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Sur la détermination du poids moléculaire des polysaccharides. Recherches sur l'amidon 54

✍ Scribed by Kurt H. Meyer; A. J. A. van der Wyk; Chen-Piao Feng

Publisher
John Wiley and Sons
Year
1954
Tongue
German
Weight
545 KB
Volume
37
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The determination of the mean degree of polymerization of polysaccharides with one reducing group by the action of 3,5‐dinitrosalicylic acid has been restudied. In order to assure complete reduction the heating period of the reaction mixture has been prolonged to 4 1/2 hours, especially for starch grains and for amylopectine. In spite of the reproductibility of the results of this rapid and simple method, they are only valid to a certain extent: the resulting degrees of polymerization can only be considered as an inferior limit, and the magnitude of the error increases with the real degree of polymerization.

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