Effect of different types of thermal pretreatments on the acid hydrolysis of water hyacinth (Eichhornia crassipes) to produce reducing sugars
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Abstract
The water hyacinth, like most plants, contains polysaccharides such as cellulose and hemicellulose in its cell wall, which can be hydrolyzed to obtain sugars, which in turn can be used in fermentative processes and produce some biofuels. In this work, the effect of different types of thermal pretreatments to carry out the acid hydrolysis of water hyacinth was evaluated, and it was found that using steam explosion under the addition of sulfuric acid (1.5% w/v), 120 °C, and 1 atm the maximum release of reducing sugars was obtained (324.26 ± 13.4 milligrams/grams of initial dry matter) obtaining 70% more sugars concerning for to the use of a boiling water bath with the addition of acid (1.5% w/v) but at a temperature of 92 °C and a pressure of 0.77 atm.
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