Carbohydrates are very important for the human body.
Carbohydrates consist of elements, C, H, and O. As for the reactions of
carbohydrates that are useful to know foods that contain carbohydrates. Here
are the reactions of carbohydrates:
Seliwanof test for fructose, sucrose, galactose, and
arabinose produces an orange color. Seliwanof test to distinguish between
glucose and fructose. Fructose reacted positively to produce a red color,
whereas glucose does not produce a red color.
Test reducing sugars (carbohydrates except sucrose,
starch, and cellulose) with a reagent:
- Fehling produce brick red precipitate
- Tollens produce silver mirror
Hydrolysis reaction
- The hydrolysis of sucrose to produce glucose and fructose
- The hydrolysis of lactose produces galactose and glucose
- maltose hydrolysis produces two molecules of glucose
Test carbohydrates
- Reagent molisch, characterized by the formation of a purple ring at the bottom of the tube.
- Test polysaccharide using iodine. Test starch will produce blue, glycogen test gives red-brown color, and dextrin test gives red wine.
Carbohydrates are essential for the human body, some
functionality uses carbohydrates as follows.
a. source primary energy for the body.
b. Helps absorption of calcium.
c. Helps metabolism of fat.
d. Keeping the body's acid-base balance.
e. Digestion.
Good carbohydrates, proteins, fats, and nucleic
acids. A constituent chemical components of cells in the body and have the same
general function, namely to make the human body more healthy. Good healthy
physically and spiritually healthy.