pigment in beetroot?

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biorach
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pigment in beetroot?

Post by biorach » Wed Jan 25, 2006 6:56 pm

hello, first post on here.
can someone tell me why the pigment comes out of beetroot when heated? ive got to write up my practical for coursework tmorow and havn't a clue :oops: thanks
xxrachelxx

fran008
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Post by fran008 » Thu Jan 26, 2006 5:09 pm

Basically you are denaturing the membrane proteinsand the pigment escapes from the cell, because the membranes are damaged.

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Dr.Stein
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Post by Dr.Stein » Fri Jan 27, 2006 7:27 am

Like boiling leaves in alcohol :)
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biorach
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Post by biorach » Fri Jan 27, 2006 8:21 am

thank you got it sorted xx

baikuza
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Post by baikuza » Fri Jan 27, 2006 12:08 pm

hei.. i'm injecting a leaf by alcohol then the pigments are moved

is it right that alcohol damages cell membrane? when i'm touch alcohol i did not find any damage in my cells

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playboy bunny
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Post by playboy bunny » Fri Jan 27, 2006 5:13 pm

i never knew betroot can be so exciting!

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Post by colettetl » Thu Dec 07, 2006 5:31 pm

My biology coursework needs writing up tommorw and I've bene Ill so I'm slightly behind. Due to the topic of beetroot I thought you may be able to help. The question is

Investigate how temperature affects the amount of pigment from beetroot when heated.

I'm planning on using a colourimeter to judge the amount of pigment released however I don't know what controls to use! A reply as soon as possible would be helpful! Just so you know it's to A level standard and this is the only thing I will be allowed with me in the planning of the actual one. So if you can think of controls it would be helpful as I'm sutck!

incidently in our first practice we were looking at the affect of hydrogen peroxide with liver at different temperatures. In that the controls were things like denaturing the liver by boiling, just using water and the hydrogen peroxide. I've worked out I need to do just water and beet root but can't think of any others. ANy input on controlls or any other aspect would be greatly appreciated

baikuza
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Post by baikuza » Fri Dec 08, 2006 2:20 pm

ok, so i try to search some article on internet and i found this.

hope this help. :o
http://madsci.org/posts/archives/2004-0 ... .Cb.r.html

Emma-MD
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Post by Emma-MD » Mon Jan 08, 2007 7:55 pm

baizuka, that website was great! That was so much help and i recommend it to everyone! :D

Thanks again

Em xx

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Re: pigment in beetroot?

Post by shaktar » Wed Mar 17, 2010 7:32 pm

Can someone please help me! I have a biology practical exam in the next few days. This is my question:
"The affect of alcohol concentration on the leakage of pigment from beetroot cells" How does alcohol affect beetroot?

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