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Understanding Carbohydrates: Structure, Function, and Health Study Guide

This guide explores the fundamental types of lipids: triglycerides, phospholipids, and sterols. It details their chemical structures, biological functions in energy storage, cell membranes, and hormone synthesis. The guide also covers the process of hydrogenation, the risks associated with trans fatty acids, and provides health recommendations for managing lipid intake for cardiovascular well-being.

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Introduction to Nutrition and Food Concepts

Introduction to Nutrition and Food Science

An introduction to nutrition defining food, nutrients, and the science of how organisms ingest, absorb, transport, utilize, and excrete food substances.

  • nutrition
  • food
  • nutrients
  • kilocalories
  • six classes of nutrients
  • hunger
  • appetite

Metabolism and the Digestive System

Human Body Nutrition and Digestive Physiology

This document describes metabolism, the digestive system, and the roles of gastrointestinal organs in the digestion and absorption of nutrients.

  • Metabolism
  • Anabolic reactions
  • Catabolic reactions
  • Mechanical digestion
  • Chemical digestion
  • Mastication
  • Peristalsis
  • Lower Esophageal Sphincter (LES)
  • Gastric juices
  • Chyme
  • Pyloric sphincter
  • Small intestine
  • Enterocytes
  • Large intestine
  • Microbiota
  • Sphincters

Introduction to Carbohydrate Structures and Functions

Introduction to Carbohydrate Structures and Functions

Carbohydrates serve as the body's primary energy source and include monosaccharides, disaccharides, and polysaccharides such as starch, glycogen, and dietary fiber.

  • monosaccharides
  • disaccharides
  • polysaccharides
  • glucose
  • fructose
  • galactose
  • sucrose
  • lactose
  • starch
  • amylopectin
  • glycogen
  • dietary fiber
  • insoluble fiber
  • soluble fiber
  • prebiotics

Properties, Structures, and Functions of Lipids

Properties and Structures of Lipids

This chapter covers the common properties of lipids, including the structures of triglycerides, phospholipids, and sterols.

  • Lipids
  • Triglycerides
  • Phospholipids
  • Sterols
  • Fatty Acids
  • Saturated Fatty Acids
  • Monounsaturated Fatty Acids
  • Polyunsaturated Fatty Acids
  • Cis and Trans unsaturated fatty acids
  • Energy density

Types and Functions of Lipids

This content explores types of lipids including triglycerides, phospholipids, and sterols such as cholesterol and phytosterols.

  • Triglycerides
  • Glycerol backbone
  • Fatty acids
  • Phospholipids
  • Emulsifier
  • Bile acid
  • Sterols
  • Cholesterol
  • Phytosterols
  • Trans Fatty Acids
  • Hydrogenation

Fatty Acids, Triglycerides, and Lipoprotein Transport

This content covers the composition, digestion, absorption, and transport of fatty acids, triglycerides, and lipoproteins within the body.

  • Fatty acids
  • Triglycerides
  • Gastric lipase
  • Pancreatic lipase
  • Bile acids
  • Emulsification
  • Monoglycerides
  • Glycerol
  • Absorption of fat
  • Lipoproteins
  • Very-Low-Density Lipoprotein (VLDL)
  • Low-Density Lipoprotein (LDL)
  • High-Density Lipoprotein (HDL)
  • Cholesterol transport

Introduction to Nutrients and Food Groups

Introduction to Nutrients and Food Groups

Chemical substances present in food are required by the body to perform basic functions through macronutrients and micronutrients.

  • Nutrients
  • Carbohydrates
  • Proteins
  • Lipids
  • Vitamins
  • Minerals
  • Water
  • Macronutrients
  • Micronutrients
  • Food groups
  • Grains
  • Fruits
  • Vegetables
  • Dairy products
  • Fats and oils

Fundamentals of Energy and Nutrients

Energy is released from carbohydrates, fats, proteins, and other organic compounds, categorized into energy-yielding nutrients and non-energy yielding nutrients.

  • Food energy
  • Energy-yielding nutrients
  • Non-energy yielding nutrients
  • Essential nutrients
  • Non-essential nutrients
  • Carbohydrates
  • Lipids
  • Proteins
  • Vitamins
  • Fat-soluble vitamins
  • Water-soluble vitamins
  • Minerals
  • Trace minerals
  • Major minerals
  • Electrolytes
  • Water
  • Phytochemicals

Functions of Digestive Organs and Accessory Organs

Functions of Accessory Organs and Digestive Tract

Accessory organs and the gastrointestinal tract perform digestive functions including the production of bile, pancreatic juices, and enzymes to digest carbohydrates, proteins, and fats.

  • Accessory organs
  • Pancreas endocrine and digestive functions
  • Liver bile production
  • Gallbladder bile storage
  • Stomach secretions and pepsin
  • Small intestine digestion and absorption
  • Large intestine absorption
  • Nutrient absorption along the GI tract

Carbohydrate Digestion, Absorption, and Functions

Carbohydrate Digestion and Absorption Processes

Carbohydrate digestion and absorption involve mechanical digestion in the mouth, enzymatic breakdown by salivary and pancreatic amylase, and the metabolism of lactose and fiber in the intestines.

  • Carbohydrate digestion
  • Salivary amylase
  • Starch breakdown
  • Monosaccharides
  • Disaccharides
  • Glucose
  • Fructose
  • Galactose
  • Sucrose
  • Lactose
  • Small intestine absorption
  • Soluble fiber fermentation
  • Insoluble fiber excretion
  • Lactose intolerance
  • Lactase deficiency
  • Lactose maldigestion

Carbohydrate Absorption and Functions

Monosaccharides are absorbed by enterocytes and metabolized by the liver, while dietary fibers provide energy, regulate blood glucose, and offer health benefits.

  • Monosaccharide absorption
  • Glucose metabolism
  • Glycogen storage
  • Fermentation of undigested carbohydrates
  • Functions of carbohydrates
  • Protein sparing
  • Ketosis prevention
  • Blood glucose regulation
  • Insulin and glucagon roles
  • Hyperglycemia and hypoglycemia
  • Dietary fiber health benefits
  • Soluble fiber and cholesterol
  • Satiety and weight control

Essential Fatty Acids and Lipid Roles

Essential Fatty Acids and Lipid Roles

Essential fatty acids include polyunsaturated omega-3 and omega-6 fatty acids that support immune function, vision, and cell membranes while lipids provide energy, storage, insulation, and protection.

  • Essential Fatty Acids
  • Polyunsaturated fatty acids
  • Omega-3 fatty acid (alpha-linolenic acid)
  • Omega-6 fatty acid (linoleic acid)
  • Arachidonic acid
  • DHA
  • EPA
  • Triglycerides
  • Adipose cells
  • Energy provision
  • Energy storage
  • Insulation and protection

Foundations of Nutrition and Dietary Choices

Fundamentals of Nutrition and Dietary Health

Nutrition is key to developing and maintaining an optimal state of health and preventing chronic diseases through improved diets and healthy lifestyles.

  • Phytochemicals
  • Chronic diseases
  • Cardiovascular disease
  • Hypertension
  • Diabetes
  • Cancer
  • Energy intake
  • Hunger
  • Appetite
  • Hypothalamus
  • Macronutrients

Excretion, Nutrient Storage, and Digestive Problems

Excretion, Storage, and Digestive Problems

Information regarding excretion processes, nutrient storage, and common problems with digestion.

  • Excretion
  • Urinary system
  • Large intestines
  • Skin perspiration
  • Lungs gas excretion
  • Nutrient storage
  • Adipose tissue
  • Glycogen
  • Glucose
  • Amino acids
  • Ulcers
  • Constipation
  • Laxatives
  • Peristalsis
  • Hemorrhoids
  • Irritable Bowel Syndrome
  • Gut microbiota
  • Diarrhea
  • Celiac Disease
  • Gluten

Dietary Reference Intakes and Food Guidelines

Food Serving Size Guidelines

Information regarding what counts as a serving for various food groups including bread, cereal, rice, pasta, milk, dairies, fruits, vegetables, meat, poultry, fish, beans, eggs, nuts, fats, and oils.

  • Bread, cereal, rice and pasta serving sizes
  • Milk and dairies serving sizes
  • Fruits serving sizes
  • Vegetables serving sizes
  • Meat, poultry, fish, beans, eggs and nuts serving sizes
  • Fats and oils serving sizes

Understanding Discretionary Calories and Nutritional Needs

Information regarding discretionary calories allowed in a diet after meeting nutritional needs and examples of caloric needs for different age groups.

  • Discretionary calories
  • Calorie Range
  • Nutritional needs
  • Carbohydrate
  • Protein
  • Fat
  • Food Groups

Carbohydrate, Fiber, and Sugar Intake

Carbohydrate, Fiber, and Sugar Intake

Guidelines for calculating fiber intake, carbohydrate needs, simple sugar recommendations, and various types of sweeteners.

  • Fiber intake calculation
  • Carbohydrate RDA
  • Recommended Dietary Fiber Intake
  • Simple sugar intake recommendations
  • High-fructose corn syrup
  • Sugar alcohols
  • Aspartame
  • Sucralose
  • Neotame
  • Acesulfame-K
  • Tagatose

Roles, Recommendations, and Management of Lipids

Roles and Management of Lipids

Lipids participate in digestion, absorption, nutrient transport, forming body structure, and regulation and communication.

  • Roles of lipids in the body
  • Digestion, absorption, and nutrient transport
  • Phospholipids and cholesterol
  • Lipoproteins
  • Cell membrane structure
  • Sterols and hormone synthesis
  • Acceptable Macronutrient Distribution Range (AMDR)
  • Cardiovascular disease
  • Myocardial infarction
  • Cerebrovascular disease
  • Lowering LDL and raising HDL
  • Hidden fat
  • Reduced-fat foods
  • Fat substitutes
  • Rancidity
  • Prevention of rancidity

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