Tuesday 20 August 2013

how many carbs in a banana

how many carbs in a banana

 
 bananas 
 Did you know that it is a myth that bananas should always be kept at room temperature? The banana industry has been trying unsuccessfully to correct this misinformation for years. Although the skins will turn black in the refrigerator, the fruit will spoil less quickly if it's refrigerated. On the other hand, bananas have quite a bit of sugar, so low-carb dieters will probably not want to eat them very often. 
 how many carbs in a banana
  • ½ cup sliced bananas: 15 grams effective (net) carbohydrate plus 2 grams fiber and 67 calories.
  • 1 medium banana (7 inches to 7¾ inches long): 24 grams effective (net) carbohydrate plus 3 grams fiber and 105 calories.

Glycemic Index for Bananas

 how many carbs in a banana
The glycemic index (GI) of bananas varies depending upon how ripe the bananas are. This is because a lot of the carbohydrate in green bananas is in the form of a kind of resistant starch which we lack the enzyme to digest. As the fruit ripens, the starch is converted into readily available sugars. One study of "under-ripe" bananas came up with a glycemic index of 30. One of "slightly under-ripe bananas" that were "yellow with green sections" produced a GI of 42, while another of "over-ripe" bananas was 52. However, most studies of bananas haven't specified the ripeness, and have come up with GIs ranging from 46 to 70. An average of 52 is usually assigned to bananas.

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