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Phenols are the reason for any color in nature [especially plants]. When an apple is cut, the cells were damaged and phenolic compounds are released, this makes the brown coloration after cut of an apple.
This is the same reaction as seen in brinjal [eggplant].
You can prevent an apple (or any other fruit similarly affected, such as Pears, avocadoes, and so on) from discolouring when cut by rubbing the cut surface with a slice of lemon, or brushing it with lemon juice.
Wiki User
∙ 12y ago
Wiki User
∙ 16y agoapples do not turn brown when you put sugar on them. They turn brown when the iron-containig chemicals in the apples flesh gets in contact with the oxygen molecules from the air. It is called oxydation. To delay this process if you need to have your apples peeled in advance, keep them in an airtight container brushed with lemon juice over them or in a bowl with cold water and juice of one or two lemons.
Other Options: Ascorbic acid, a commercial product, can also be added to water to create an anti-browning solution. Ascorbic acid is actually Vitamin C. Dip the slices in lemon-lime soda. Soak apples slices in apple juice until ready to use. The acidity in the apple juice prevents the apple slices from browning and doesn't change the flavor of the apple. This happens with other fruits and veggies too.
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.
Wiki User
∙ 13y agoOxidation. Preparing it for decomposition.
Apples, like other fruits, contain an enzyme called catecholase which facilitates the formation of catechol on the surface of bruised or cut apples. The catechol reacts with the oxygen in the air, producing the brown color (polyphenol).
Wiki User
∙ 11y agoThe brown color is oxidation. Oxidation is caused by the rapid deterioration of the meat of the apple that is exposed to the oxygen in the air. This happens when the meat no longer covered with the protective skin that nature equips apples with..
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∙ 11y agoBasically, it's oxidation and degradation of the organic compounds within the apple.
Wiki User
∙ 8y agowhy means the oxygen will spread into it in apple maleic acid is present
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Why does apple go brown when put in water?
Because the apple has a chemical in it that will make it turn brown when wet.
What happens to a sliced apple if it is put in a plastic bag for a week?
It will turn brown faster in the plastic bag than normally because it produces a chemical that makes it turn brown faster. That can be avoided if you put lemon juice on the apple.
What ingredient softens brown sugar?
Place the brown sugar in an airtight container with a slice of apple. Leave it overnight and it should be softened. Can also put a moist paper towel or cloth covering the brown sugar leaving it over night.
What would happen if you put proixde on a apple?
If you put proxide on an apple it will wilt or it will sink in and make the apple brown.
Can you soften brown sugar in the microwave?
Yes. Be sure you put the butter on a plate or in a bowl ( do not use a plastic container). If you want to just soften it, 15-20 seconds will do. If you want to melt it, do not microwave for more than one minute.
What happens when you put an apple in vinegar?
The apple turns brown and loses color.
If you put raw cut up potatoes in marinade will they turn brown?
no they will not turn brown
Where was sugar originated from?
well brown sugar is from poo they put it in a bowl and put mud in it and mix it and it was from Russia
What light brown powder would someone put in coffee?
Cinnamon, brown sugar, or raw sugar would be good.
Is lemon juice a antioxidant?
yes, if you put it on, say an apple, then the apple would not go brown.
Where do you put the semicolon for The recipe calls for three fourths cup of brown sugar?
the recipe calls for; three fourth cup of brown sugar :)
How does the type of sugar put in a cake affect the taste of the cake?
Brown sugar will vary the taste.
