Glycemic Index And Fruit Juice

 The Glycemic Index calculates the effect on blood glucose levels.

The Glycemic Index (GI), supercedes the older classification of carbohydrates into "simple" and "complex", GI classifies carbohydrate in foods according to its immediate effect on blood glucose levels. The basic categories are; High-GI foods, GI value 70+; Intermediate GI foods, GI value 56-69 and Low-GI foods GI value 55 or less. If you have insulin insensitivity, diabetes or any associated conditions, choose lower GI foods for optimum blood glucose control.
Glucose is the body's preferred source of energy and the body processes glucose very efficiently. (GI of glucose is 100.) But the body has a limited capacity for handling fructose, a common monosaccharide in fruits and honey, which is why fructose has a low GI of 23. Ordinary table sugar (sucrose), is a disaccharide made up of one molecule of glucose linked to one of fructose. Which helps explain why the GI of white sugar is 65, almost exactly midway between 23 and 100 in the intermediate range.


GI Value For Fruit Juice
  • Apple Juice (unsweetened)
  • Glycemic Index (GI) Value: 40
  • Effect on Blood Glucose Levels: Low
  • Cranberry Juice (unsweetened)
  • Glycemic Index (GI) Value: 56 Effect on Blood Glucose Levels: Medium
  • Grapefruit Juice (unsweetened)
  • Glycemic Index (GI) Value: 48
  • Effect on Blood Glucose Levels: Low
  • Orange Juice (unsweetened)
  • Glycemic Index (GI) Value: 53
  • Effect on Blood Glucose Levels: Low
  • Pineapple Juice (unsweetened)
  • Glycemic Index (GI) Value: 46
  • Effect on Blood Glucose Levels: Low
  • Tomato Juice
  • Glycemic Index (GI) Value: 38
  • Effect on Blood Glucose Levels: Low
  • Raspberry Smoothie
  • Glycemic Index (GI) Value: 33
  • Effect on Blood Glucose Levels: Low

Glycemic Load For Fruit Juice
While the glycemic index (GI) measures glycemic response after consuming a standard amount (50g) of useable carbohydrate from a particular food, the glycemic load (GL) ranks foods according to how much carbohydrate is in a regular serving of the food in question.Glycemic Load measures the glycemic index of a regular food serving. It is therefore a useful dietary tool for patients with diabetes, people with insulin resistance, or anyone who wishes to improve their blood sugar management by avoiding surges in blood glucose after eating easily digestible carbohydrate.

Apple Juice (unsweetened)
Serving Size: 8 fl oz (250ml)
Glycemic Load (GL) per Serving: 12

Cranberry Juice (unsweetened)
Serving Size: 8 fl oz (250ml)
Glycemic Load (GL) per Serving: 16

Grapefruit Juice (unsweetened)
Serving Size: 8 fl oz (250ml)
Glycemic Load (GL) per Serving: 11

Orange Juice (unsweetened)
Serving Size: 8 fl oz (250ml)
Glycemic Load (GL) per Serving: 9

Pineapple Juice (unsweetened)
Serving Size: 8 fl oz (250ml)
Glycemic Load (GL) per Serving: 16

Tomato Juice
Serving Size: 8 fl oz (250ml)
Glycemic Load (GL) per Serving: 4

Glycemic Load measures impact of food servings on blood glucose, here's how to calculate glycemic Load. Now to determine the glycemic load (GL) for a particular food, use this formula:

GL = (GI Value x carbohydrate per serving) divided by 100

Note: If a particular food has Glycemic Load (GL) of zero, usually this is because the food contains little or no carbs (eg. meat, fish, cheese, eggs etc.).


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1 comment:

  1. Thanks for the post. I knew about fruit juice and blood sugar but this post helped me a step further. There are posts everywhere about how healthy is "green" juice. But it is very difficult to actually find a post like this.