This source of food was essential for man’s existence, since all cereals ​ — including wheat, barley, rye, oats, rice, millet, sorghum, and maize — ​ contain starchy carbohydrates that the body is capable of transforming into its principal fuel ​ — glucose.
हमारा शरीर कार्बोहाइड्रेट्‌स को ऊर्जा देनेवाले सबसे खास पदार्थ, ग्लूकोज़ में बदल सकता है ।