Q. The most common substrate used in distilleries for the production of ethanol is
Solution:
The yeast species used in alcoholic fermentation are Saccharomyces cerevisiae, commonly called Brewer’s yeast. Malted cereals and fruit juices produce ethanol by fermentation. However, molasses are the most common substrate for alcoholic fermentation, especially ethanol.
Molasses is the black coloured by-product isolated during the sugar crystal extraction. This residue is used in the production of alcohols and alcoholic beverages. With the help of fermentation, sucrose sugar in molasses convert into ethanol and carbon dioxide with the help of yeasts.
Zea mays or corn is used as food for humans and livestock and is not involved in the production of ethanol. However, few studies have been able to extract bioethanol from corn juice.
Soybean provides various health benefits such as maintaining the cholesterol levels. Thus, in turn it lowers the risk of heart disease. In Brazil, soybeans have been attempted to use in the production of ethanol but it has not been popularised yet.
Fruit juices are used in distilleries for the production of ethanol, but only a selected few.
Molasses is the black coloured by-product isolated during the sugar crystal extraction. This residue is used in the production of alcohols and alcoholic beverages. With the help of fermentation, sucrose sugar in molasses convert into ethanol and carbon dioxide with the help of yeasts.
Soybean provides various health benefits such as maintaining the cholesterol levels. Thus, in turn it lowers the risk of heart disease. In Brazil, soybeans have been attempted to use in the production of ethanol but it has not been popularised yet.
Fruit juices are used in distilleries for the production of ethanol, but only a selected few.