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How Much Sugar?

fruit to eat?

  • 30 Jan 2012 5:39 AM
    Message # 810566
    Deleted user
    hopefully someone can help me out . Peaches are delicious at the moment, are they a good friut for us to eat .

    Fructose 1.5 per 100grm
    sucrose 5.7grm per 100 grm

    alittle bit confused. Isnt the fructose the enemy and not the sucrose.

    thanks
    Last modified: 30 Jan 2012 5:41 AM | Deleted user
  • 02 Feb 2012 8:18 PM
    Reply # 814950 on 810566
    Deleted user
    Yeah, Joanne, I'm confused now, too. I gave you the link, and it does say,
    Total sugars   -   8.5 g
    Fructose        -   1.5 g
    Sucrose         -  
    5.7 g
    Glucose         -   1.3 g

    So, yes, totally confusing.


    and yes, sucrose is the enemy, because.......

    From Wikipedia :-

    Sucrose is a disaccharide made up of 50% glucose and 50% fructose and has a moderately high glycemic index of 64, about the same as honey, 62, but not nearly that of maltose, which is a disaccharide made up of 100% glucose (i.e., 2 parts glucose), 105,[22] which, in turn, causes an immediate response within the body's digestive system. As with other sugars, sucrose is digested into its components via the enzyme sucrase; to glucose (blood sugar) and fructose. The glucose component is transported into the blood (90%) and excess glucose is converted to temporary storage in the liver - named glycogen. The fructose is either bonded to cellulose and transported out the GI tract or processed by the liver into citrates, aldehydes, and, for the most part, lipid droplets (fat).

    As the glycemic index measures the speed at which glucose is released into the bloodstream a refined sugar containing glucose is considered high-glycemic. As with other sugars, over-consumption may cause an increase in blood sugar levels from a normal 90 mg/dL to up over 150 mg/dL.[23] (2.3 mmol/l to over 4.4 mmol/l)


    The link I gave Joanne is here, :-


    http://www.foodstandards.gov.au/consumerinformation/nuttab2010/nuttab2010onlinesearchabledatabase/onlineversion.cfm?&action=getFood&foodID=06C10180

    If that info is correct, then there is 4.35 Fructose, and 4.35 Glucose.......? In a peach!!
    Anyone help here?


    Sylvia xx    aka    Silver Angel

    SMILE!!

    Last modified: 02 Feb 2012 8:24 PM | Deleted user
  • 14 Feb 2012 7:20 PM
    Reply # 825532 on 810566
    Deleted user

    It's not really that confusing. Some sugars are found in their pure form while others are found combined with other sugars. So free fructose and free glucose are found but also sucrose which is a combination of fructose and glucose.  When working it out take into consideration the free fructose and 50% of the sucrose.  From what I understand from my reading David's book, a single peach is OK because the total fructose is less than 10gm and it is combines with fibre so that the absorption is slowed through the gut. Look at David's graph relating to fruit and you can see that peaches are better than grapes or watermelon for instance because of lower fructose and higher fibre. 

    Hope that helps.

    Liz

  • 14 Feb 2012 9:56 PM
    Reply # 825638 on 810566
    Deleted user
    Finding the fructose in fruit can be tricky.  The food standards website have changed.  They used to put exactly what was fructose and what was glucose.  Now they have sucrose which as Sylvia mentioned is 50% glucose and 50% fructose so basically to work out what's in a peach... you half the sucrose amount so 5.7/2 is 2.85, and add the fructose amount so 2.85+1.5 is a total of 4.35g fructose per 100g. On top of that you need to remember the size of the fruit so 100g would be about a medium size peach.  There is no harm in having 1 a day.  I love my fruit and I have fruit for afternoon tea every day or maybe a strawberry after dinner if I ever feel like anything sweet.
  • 15 Feb 2012 1:34 AM
    Reply # 825783 on 810566
    Deleted user
    Janelle, how clever you are!!  lol....I had a brain freeze,   where's the emoticons!!  (to show me cracking up)

    Love

    Sylvia xx

    SMILE!!
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