Unit_12-13 - Simple sugars, starches and dietary fiber are...

Info iconThis preview shows pages 1–21. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Simple sugars, starches and dietary fiber are members of the carbohydrate family Carbohydrate supplies fewer than half the calories of fat Tooth decay and poor-quality diets are related to high sugar intake Fiber benefits health in a number of ways Major sources of energy from food worldwide Not the most energy dense nutrient, simply our major source (9 calories/g fat, 7 calories/g alcohol, 4 calories/g carbohydrate and protein) Carbohydrates come in many forms. Monosaccharides Dissaccharides Complex carbohydrates 1. Mono saccharide One Sugar 1. Di saccharide Two Sugars Simple sugars are made of one sugar (monosaccharide) or two sugars (disaccharides) combined Few are made by animals Typical monosaccharides : glucose (blood sugar) fructose (fruit sugar) galactose Monosaccharrides are single sugars (most are hexoses). Glucose serves as the essential energy source, and is commonly known as blood sugar or dextrose . Fructose is the sweetest, occurs naturally in honey and fruits, and is added to many foods in the form of high-fructose corn syrup. Galactose rarely occurs naturally as a single sugar. The primary sugar in milk and milk products (dairy). Taste buds on the tongue can detect these small changes in carbohydrate structure giving us different tastes of sweetness The Simple Carbohydrates The Simple Carbohydrates Disaccharides : sucrose, maltose and lactose Lactose is milk sugar, one of the only animal sugars besides glucose (blood sugar) Complex carbohydrates are long, snake-like or brush-like molecules (polysaccharides) made of 3 to hundreds or even thousands of sugars bonded together chemically Glycogen Starch Dietary fiber Glycogen o Storage form of glucose in animals o Branched molecule o Glucose polymer Functions: o Maintain blood glucose between meals (liver) o Provide muscle with energy during anaerobic exercise The Complex Carbohydrates The Complex Carbohydrates The Complex Carbohydrates Starch Storage form of glucose in plants Amylose - Linear glucose polymer Amylopectin - Branched glucose polymer Found in grains like wheat or rice; tubers such as potatoes; legumes such as peas and beans Functions: Provide an energy source for the developing plant The Complex Carbohydrates The Complex Carbohydrates The Complex Carbohydrates Starches are the ones that have caloric value Starch comes from grains such as rice, wheat, corn, potatoes, beans, and peas; a low-calorie bargain at 4 Calories/g Fiber is a complex carbohydrate that we cant digest because our bodies dont make enzymes to break it down o...
View Full Document

Page1 / 75

Unit_12-13 - Simple sugars, starches and dietary fiber are...

This preview shows document pages 1 - 21. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online