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Hydrolysis of Dialdehyde Starch with Sulfurous Acid
Author(s) -
Wilham C. A.,
McGuire T. A.,
Mehltretter C. L.
Publication year - 1971
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.19710230605
Subject(s) - glyoxal , hydrolysis , chemistry , starch , sulfur , reagent , organic chemistry , acid hydrolysis , sulfur dioxide , nuclear chemistry
A systematic investigation of the sulfurous acid hydrolysis of dialdehyde starch (DAS) was made in which temperature, time and concentration of reagents were varied. Optimum yields of apparent D‐erythrose and of glyoxal of 78 and 81 % of theory were obtained by hydrolyzing 1.8% of DAS in water containing 14.7 moles of sulfur dioxide per mole of DAS for 1.33 hr at 100. 0 C. Increased reversion and degradation at higher concentrations of DAS and at higher temperatures of hydrolysis rapidly decreased the yields of apparent D‐ erythrose and glyoxal.