Lemon or Orange... which has more vitamin C .... Apple Browning Experiment Biology.

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    basically im doing an experiment seeing which component of a citrus fruit prevents apple browning: citric acid or ascorbic acid.

    ive found that citric acid is NOT as good an inhibitor as ascorbic.


    but then....

    lemon juice is a better inhibitor than orange juice....

    but... lemon juice, is more acidic and has less vitamin C... ?

    im comparing the juice squeezed and in a certain quantity. does it infact have more vitamin C?

    so which has more per cm3 for example? because if an orange does have a lot more vitamin C i cant work out why my experiment doesnt add up
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    (Original post by LouisVuitton43)
    basically im doing an experiment seeing which component of a citrus fruit prevents apple browning: citric acid or ascorbic acid.

    ive found that citric acid is NOT as good an inhibitor as ascorbic.


    but then....

    lemon juice is a better inhibitor than orange juice....
    This makes sense since ascorbic acid = vit c. Also, the citric acid in the lemon is not detracting from the inhibitory effect of the ascorbic in the lemon (i.e. is also contributing to inhibition).

    but... lemon juice, is more acidic and has less vitamin C... ?
    Really?
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    (Original post by Oladz)
    This makes sense since ascorbic acid = vit c. Also, the citric acid in the lemon is not detracting from the inhibitory effect of the ascorbic in the lemon (i.e. is also contributing to inhibition).



    Really?
    yes
    lemon juice ph 1
    orange juice ph4

    lemon juice... 46g per 100g of ascorbic acid
    orange... 60g per 100g ish? not much research on it on google. however i am looking.
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    http://www.thestudentroom.co.uk/forumdisplay.php?f=129
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    yeah, thought that just after i posted it. but i cant change it...
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    (Original post by LouisVuitton43)
    yes
    lemon juice ph 1
    orange juice ph4

    lemon juice... 46g per 100g of ascorbic acid
    orange... 60g per 100g ish? not much research on it on google. however i am looking.
    Quick wiki says orange is about 50mg/100g to lemons 40mg/100g vit c but paragrpaph 2 of http://en.wikipedia.org/wiki/Citric_acid shows that the conc. of Citric acid differs significantly.

    So its most likely a case of even though ascorbic>citric gram for gram as an inhibitor, the sheer difference in conc. of citric means that lemon will be better.
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    (Original post by Oladz)
    Quick wiki says orange is about 50mg/100g to lemons 40mg/100g vit c but paragrpaph 2 of http://en.wikipedia.org/wiki/Citric_acid shows that the conc. of Citric acid differs significantly.

    So its most likely a case of even though ascorbic>citric gram for gram as an inhibitor, the sheer difference in conc. of citric means that lemon will be better.

    righhhht.
    thanks.
    will need to do more tests though which is a little bit depressing, but still, thanks!

    :p:
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    Lemon, I guess. Orange contains too much sugar
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    (Original post by snowdianna)
    Lemon, I guess. Orange contains too much sugar
    whats that got to do with anything?
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    (Original post by Oladz)
    whats that got to do with anything?
    Lemon has more vitamin C and they make people much more white and skin much better, anti-age stuff, I should say
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    (Original post by snowdianna)
    Lemon has more vitamin C and they make people much more white and skin much better, anti-age stuff, I should say
    Cool story, Bro.
 
 
 
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