Sucrose chemistry hydrolysis

Invertase (EC 3.2.1.26) catalyzes the hydrolysis of P-fructofuranosides and has been used in analytical chemistry (biosensors), in confectionary, and in the production of inverted syrup (1). Invert sugar syrup, which can be obtained by acid or enzymatic hydrolysis of sucrose, is a valuable commercial product especially in countries where the main sources of sugar are beet or cane. With acid hydrolysis, the final syrup is often contaminated with colored oxidation compounds, which arise from cyclization of hex-oses at low pH and high temperatures (2-4). Such a problem does not occur... 

The chemistry of the hydrolysis/hydrogenation process from (+)-sucrose can be schematized as follows ... 

The carboxylic acids derived from sucrose may find some use in pharmaceutical and agricultural chemistry. The uronic and 2-keto-aldonic acids obtained by hydrolysis of these compounds represent a great industrial... 

To start with, in methanol - which always contains some water unless extreme solvent drying is pursued - sucrose either undergoes hydrolysis or solvolysis. The latter is indicated in red in Fig. 11 and usually yields methyl-o-glucopyranoside and fructose from sucrose instead of methyl-fructoside and glucose. These methylated sugars are non-reducing and chemically more stable they are crmsidered unreactive to retro-aldol chemistry, since their ether bond should be hydrolyzed prior to be of use in the lactate synthesis. 

Q Why does the enzyme-catalyzed hydrolysis of sucrose go faster than the hydrolysis of sucrose In the chemistry laboratory ... 

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