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Die spezifische Drehung des Sorbits und des Sorbit‐Molybdat‐Komplexes
Author(s) -
Lippke G.,
Thaler H.
Publication year - 1970
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19700221005
Subject(s) - sorbitol , chemistry , molybdate , specific rotation , inorganic chemistry , biochemistry , stereochemistry
The Specific Rotation of Sorbitol and of the Sorbitol Molybdate Complex.1 The specific rotation of the hexite at 365, 405, 436, 546 and 578 nm has been determined in solutions of different concentration with a commercial sorbitol preparation as well as with a self‐produced sorbitol. Contents of both preparations had been determined enzymatically and by means of periodate. The specific rotation [α] D was obtained mathematically from these data as well as by graphic extrapolation. 2 Conditions, under which the sorbitol molybdate complex shows its maximum of specific rotation were defined by systematic experiments at varying sorbitol, molybdate and hydrogen‐ion concentration. 3) From these results a diagram was set up, which shows the molybdate and acid doses in order to determine sorbitol polarimetrically in the widest possible range. 4) The specific rotation of the sorbitol molybdate complex was determined at the same wavelengths as that of the sorbitol. It was also mathematically and graphically extrapolated for [α] D .