By weight, the average russet potato is about 78.3 percent water. After water, starches and sugars compose the bulk of the potato's chemical content at about 18 percent. Non-digestible carbohydrates--or fiber--in the form of cellulose and pectin make up another 0.4 percent of the potato.
What chemicals make up a potato?
The dry matter of potato tubers is composed of various substances: starch (15%), sugars, nitrogen compounds, lipids, organic acids, phenolic compounds, mineral substances and non-starch polysaccharides.
Is cooking potatoes a chemical reaction?
Chemical reactions don't just happen once a potato is heated. During storage various chemical reactions take place. For instance, it is well known that storing a potato in the fridge results in starches breaking down into sugars.
Is baking a potato a chemical change?
Potatoes are largely starch; cooking (heating with water) causes chemical changes in the structure of these starches, similar to those that occur in rice (which is almost predominantly starch).
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