Practical Use of Glycemic Index: Understanding Gushers and Tricklers
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Questions and Answers

What is the glycemic index?

A scale that ranks carbohydrates by how much they raise blood glucose levels compared to a reference food.

What is the protocol for determining the glycemic index?

  1. 25 or 50 grams carbohydrate of test food. 2. Blood samples taken at specific intervals. 3. Values plotted and AUC calculated. 4. Test food response compared to reference food response. 5. Average GI of 8-10 volunteers = GI of test food.

How is the glycemic index classified?

Low (0 – 55), Moderate (56 – 69), and High (70 or more)

What is the purpose of determining the glycemic index?

<p>To understand the impact of a specific food on blood glucose levels.</p> Signup and view all the answers

What type of starch has a slower rate of digestion and a lower GI?

<p>Amylose</p> Signup and view all the answers

Which food has a higher GI, Uncle Ben’s converted LG rice (50) or Russet potato (85)?

<p>Russet potato (85)</p> Signup and view all the answers

How does bran influence the GI of foods?

<p>Bran acts as a physical barrier that slows down enzymatic activity on the internal starch layer, resulting in a lower GI.</p> Signup and view all the answers

Which type of fiber transforms intestinal contents into gel-like matter, slowing down enzymatic activity on starch?

<p>Viscous, soluble fibers</p> Signup and view all the answers

What effect does fat and protein content have on the digestion of starch?

<p>Fat and protein slow down gastric emptying and thus slow down the digestion of starch.</p> Signup and view all the answers

How does acid content influence the GI of foods?

<p>Acid slows down gastric emptying and thus slows down the digestion of starch.</p> Signup and view all the answers

What effect does food processing have on the GI of foods?

<p>Highly processed foods require less digestive processing, resulting in a higher GI.</p> Signup and view all the answers

How does cooking affect the GI of starch-containing foods?

<p>Cooking swells starch molecules and softens foods, which speeds up the rate of digestion, resulting in a higher GI.</p> Signup and view all the answers

What is the effect of all the factors mentioned on glycemic levels?

<p>The factors can influence glycemic levels by affecting the rate of digestion and the resulting GI of foods.</p> Signup and view all the answers

How do the factors mentioned make us feel after eating carbohydrate-containing foods?

<p>The factors can impact how we feel after eating carbohydrate-containing foods by influencing the speed of digestion and the resulting blood sugar levels.</p> Signup and view all the answers

Which type of rice has a higher GI, Uncle Ben’s converted LG rice (50) or Glutinous rice (98)?

<p>Glutinous rice (98)</p> Signup and view all the answers

What type of fiber is present in Apple (40) and Whole wheat bread (73) that contributes to their lower GI?

<p>Viscous, soluble fibers</p> Signup and view all the answers

Glycemic Index (GI) is a scale that ranks carbohydrates by how much they raise blood glucose levels compared to a reference food. A ______ GI is between 0 – 55.

<p>low</p> Signup and view all the answers

The protocol for determining the glycemic index involves taking blood samples every 15 minutes in the 1st hour, every 30 minutes in the 2nd hour, and every 30 minutes for the 3rd hour for ______ volunteers only.

<p>DM</p> Signup and view all the answers

The glycemic index is determined by comparing the test food response to the reference food response and calculating the AUC, which stands for Area Under the ______.

<p>Curve</p> Signup and view all the answers

The glycemic index is classified as ______, moderate, or high based on the range of values.

<p>low</p> Signup and view all the answers

Amylose absorbs ______ water

<p>less</p> Signup and view all the answers

Amylopectin absorbs ______ water

<p>more</p> Signup and view all the answers

Molecules form tight ______

<p>clumps</p> Signup and view all the answers

Molecules are more ______

<p>open</p> Signup and view all the answers

Slower rate of ______

<p>digestion</p> Signup and view all the answers

Faster rate of ______

<p>digestion</p> Signup and view all the answers

Bran acts as a physical barrier that slows down enzymatic activity on the internal starch ______

<p>layer</p> Signup and view all the answers

Viscous, soluble fibers transform intestinal contents into ______-like matter that slows down enzymatic activity on starch

<p>gel</p> Signup and view all the answers

Fat and protein slow down gastric emptying, and thus, slows down digestion of ______

<p>starch</p> Signup and view all the answers

Acid slows down gastric emptying, and thus, slows down the digestion of ______

<p>starch</p> Signup and view all the answers

Highly processed foods require less digestive ______

<p>processing</p> Signup and view all the answers

Cooking swells starch molecules and softens foods, which speeds up the rate of ______

<p>digestion</p> Signup and view all the answers

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