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Figure 1 | BMC Biotechnology

Figure 1

From: Lipase-catalysed acylation of starch and determination of the degree of substitution by methanolysis and GC

Figure 1

Reactions and side-reactions of starch ester analyses. a) Titration Analysis: 1 Hydrolysis of starch ester (circle denotes starch), 2 Saponification of acid, 3 Titration of residual hydroxide ions, 4 Titration of saponified acid, b) Transesterification/GC Analysis: 1 Methanolysis of starch ester and formation of methyl ester, 2 Hydrolysis of methoxide 3 Hydrolysis of methyl ester, 4 Deprotonation of acid to form acyl ion, no methyl ester synthesis.

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