Discussion
Statement I: Molasses requires extensive pretreatment before fermentation to ethanol.
Statement II: The sugars in molasses are already in a fermentable form.
In the light of the above statements, choose the correct answer.
Answer: B
Correct answer: Statement I is incorrect but Statement II is correct
Statement I is incorrect: molasses needs very little preparation, only dilution to a suitable sugar concentration and adjustment of pH and nutrients.
Statement II is correct and is exactly why. The sugars in molasses are sucrose, glucose and fructose - already in a form yeast can take up and ferment. Contrast lignocellulose, which requires a pretreatment to open the lignin barrier and then an enzymatic hydrolysis before any fermentation can begin; that difference is what has kept molasses the cheaper feedstock.
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