Why does potato turns brown?

Answer 1

There are physical as well as chemical changes that occur when certain vegetables and fruits are peeled or cut. One of the physical changes leading to discoloration is the loss of turgor or the hydraulic pressure within the fruit or vegetable that causes the circulatory process, not unlike blood pressure in animals. Hormel Foods says "When fresh fruits and vegetables are peeled or cut open, the enzyme called polyphenol oxidase (also called tyrosinase) contained in the cells is exposed to and reacts with the oxygen in the air. The reaction that occurs, which is called oxidation, is what turns the fruits and vegetables brown. The bruising seen on some fruit, such as apples and Pears, is caused by the same type of reaction. If an apple is damaged by being hit or dropped, the apple's cells in that area are damaged and the enzymes are exposed to the air inside the apple, causing them to turn brown. When preparing fruits and vegetables for use, an anti-browning solution should be used to prevent them from turning brown."

Answer 2

When you peel a potato, it goes brown in a few minutes. A chemical reaction from a skinless potato with the air turns it to brown. One way to avoid this is to sink the pealed potato in a jar of water to avoid it getting contact with air.

Answer 3

A potatoe turns brown due to its high levels of starch .If you have sensitive hands wear gloves when handling potatoes as starch can burn and sting your hands . Starch is also acidic so be carefull.

Answer 4

If potatoes get too cold, they often get lines in about 1/4 inch from the skin. I am told potatoes cannot tolerate the heat either, but I am not sure of the results there. They are best kept cool, but not cold.

Answer 5

Because there are many kinds of potatoes, some are white, some are shades of brown and even red and purple.

Answer 6

•Potatoes are made mainly from starch so contains sugar and when heated the sugar breaks down and turns into carbon therefore it turns to the colour of brown.

Answer 7

Its because it has iron content in it. When iron reacts with oxygen the brown colour formation takes place in other words rust formation takes place.

Answer 8

It is caused by oxidation (oxygen).