SCG is an agro-industrial residue composed in the majority
by carbohydrates, being mannose, galactose, and arabinose
(from hemicellulose) and glucose (from cellulose), the main sugars
present. Optimal conditions for hemicellulose sugars extraction
by dilute acid hydrolysis were established, and consisted in using
100 mg acid/g dry matter, 10 g/g liquid-to-solid ratio, at 163 ◦C for
45 min. Under these conditions, hydrolysis efficiencies of 100%,
77.4%, 89.5%, and 87.4% can be achieved for SCG galactan, mannan,
arabinan and hemicellulose, respectively. The hydrolysate
produced under these optimal conditions is a promising source of
sugars, which could be used in the production of several chemical
compounds by chemical or fermentation processes. Mannose,
for example, the main sugar obtained from SCG hydrolysis, could be
used for the production of mannitol, a chemical with a wide variety
of uses in the food industry.
SCG is an agro-industrial residue composed in the majority
by carbohydrates, being mannose, galactose, and arabinose
(from hemicellulose) and glucose (from cellulose), the main sugars
present. Optimal conditions for hemicellulose sugars extraction
by dilute acid hydrolysis were established, and consisted in using
100 mg acid/g dry matter, 10 g/g liquid-to-solid ratio, at 163 ◦C for
45 min. Under these conditions, hydrolysis efficiencies of 100%,
77.4%, 89.5%, and 87.4% can be achieved for SCG galactan, mannan,
arabinan and hemicellulose, respectively. The hydrolysate
produced under these optimal conditions is a promising source of
sugars, which could be used in the production of several chemical
compounds by chemical or fermentation processes. Mannose,
for example, the main sugar obtained from SCG hydrolysis, could be
used for the production of mannitol, a chemical with a wide variety
of uses in the food industry.
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