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- Harry-O'Kuru, R.E.; Moser, K.B.; Gordon, S.H.
- Carbohydrate polymers 1992 v.17 no.4 pp. 313
- ethers; chemical reactions; calorimetry; corn starch; spectral analysis; hydroxylation
- ... The molar substitution (MS) of 2-hydroxyalkyl starch ethers, e.g. 2-hydroxybutyl starch, can be determined spectrophotometrically. The principle involves a dehydrative-hydrolytic generation of n-butyraldehyde from the 2-hydroxybutyl starch ether substituent in concentrated sulfuric acid. The resultant hydrolyzate containing the aldehyde and allylic species of the substituent is complexed with 2,2- ...