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Hydrolysis of dialdehyde starch with sulfurous acid

Author:
Wilham, C.A., McGuire, T.A., Mehltretter, C.L.
Source:
Starke 1971 v.23 no.6 pp. 201
Subject:
starch, hydrolysis, hydrolysates
Abstract:
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 % oj theory were obtained by hydrolyzing 1.8 % of DAS in water containing 14.7 moles oj sulfur dioxide per mole oj DAS jar 1.33 hr at 100⁰C. 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.
Agid:
31375
Handle:
10113/31375