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Why does potato extract turn brown when catechol oxidase is added?
Wiki User
∙ 14y ago
It is because the enzyme facilitates a reaction between catechol and oxidase. In the presence of oxygen, the compound catechol is oxidized by the removal of two hydrogen atoms. Catechol is thus converted to benzoquinone, and oxygen is reduced by the addition of two hydrogen atoms to form water. Benzoquinone molecules then link together to form long, branched chains. These chains are the structural backbones fo the read and brown melanoid pigments that cause the darkening. The intensity of the colour depends on the amount of the coloured product formed.
Wiki User
∙ 14y ago
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What enzyme is present in liver and potatoes?
Catalase is the most well known enzyme common to both liver and potato, but there are others enzymes that can be found in potato. Oxidase and peroxidase are the other enzymes that can be found in potato. Oxidases in potato includes tyrosinase, cathecol oxidase and cytochrome oxidase. Peroxidase have the same function as with oxidase but they need a co-factor in order to complete its required action. The co-factor phenol oxidase is found abundant in potatoes. Hence, it will have a positive reaction once a substrate will be added indicating the presence of peroxidase in potatoes.
What happens when crushed potato was added to hydrogen peroxide?
There was a lot of foam because of the enzyme catalse that is in the potato.
For salt extraction from a cooked receipe stews greens can you use a sweet potato Or just white potatoes?
I had never thought about using a sweet potato for salt extraction, but I always use a white potato. I think the sweet potato would flavor the foods whereas a white potato would absorb the flavor with the salt. An added note - don't leave the potato cooking until it completely cooks and gets soft or it will re-salt the food.
Why does bubbling occur when hydrogen peroxide is added to the catalase potato?
The hydrogen peroxide, H2O2 , is being decomposed into water and oxygen gas (the bubbles).
Why Na2Co3 extract is not used for carbonate test?
because Carbonate ion present in NA2CO3 may make rkn backwards if carbonate ion is again added
Why does potato extract turn brown and stratify when catechol is added?
The catechol rapidly oxidizes the potato
Why should the potato extract be added last?
because it is yummy :)
What enzyme is present in liver and potatoes?
Catalase is the most well known enzyme common to both liver and potato, but there are others enzymes that can be found in potato. Oxidase and peroxidase are the other enzymes that can be found in potato. Oxidases in potato includes tyrosinase, cathecol oxidase and cytochrome oxidase. Peroxidase have the same function as with oxidase but they need a co-factor in order to complete its required action. The co-factor phenol oxidase is found abundant in potatoes. Hence, it will have a positive reaction once a substrate will be added indicating the presence of peroxidase in potatoes.
Why is MSG added to potato crisps?
MSG is added to potato crisps because it give the flavored
How does a crush potato differ from a whole potato when hydrogen peroxide is added to each separately?
it tasts funny =)
What happens when crushed potato was added to hydrogen peroxide?
There was a lot of foam because of the enzyme catalse that is in the potato.
What is peach extract?
Peach extract is a flavoring for cooking and baking. Peach extract is usually in liquid form and tastes like peaches. A little bit added to cookies gives them a peach flavor.
How did yams get their name?
this farmer tried to make a potato and added something inside the potato and it grew different and tasted different. the farmers name was yam
Why mustard be added to mayo?
No, it is not one of the ingredients- but they can be mixed together (when making potato salad)
What is a potato crisp?
A potato crisp is what the British call a potato chip.A potato crisp is a thin slice of potato deep fried invegetableoil until golden brown and 'crisp', some have added flavours, plain salt, salt and vinegar, cheese and onion are just three examples.
How are the flavorings used in cakes created?
say your making almond extract. you take the almond and extract the inital flavor from that and concentrate it. other things like preservitives and thickeners may be added
What word did Dan Quayle mispell?
"potato" was his spelling faux-pas- he added an e to the end.
