南京师范大学：《营养学》课程PPT教学课件（英文版）第二章 Nutrition Basic

Professor Dr. Jin BQ Department of Food Science & Nutrition NJNU - Basic

Professor Dr. Jin BQ Department of Food Science & Nutrition NJNU - Basic

The Science of Nutrition Fields for Human Health

The Science of Nutrition Fields for Human Health

Review: Digestive Physiology  Food Digestion & Absorption in Digestive System Trace or Gut Glands Mouth Salivary Esophagus Liver Stomach Pancreas Intestine Others

Review: Digestive Physiology  Food Digestion & Absorption in Digestive System Trace or Gut Glands Mouth Salivary Esophagus Liver Stomach Pancreas Intestine Others

Definition  Digestion: The processing is that food and other macro￾molecule will be decomposed the micro- molecule ( broken down) in gut  Absorption: Simple materials will be absorbed in gut and into blood

Definition  Digestion: The processing is that food and other macro￾molecule will be decomposed the micro- molecule ( broken down) in gut  Absorption: Simple materials will be absorbed in gut and into blood

Position of Digestion & Absorption  Mouth: Food Intake, Mechanical/Physical Digestion  Esophagus: Food Pass-way  Stomach: Storage Mechanical & Chemical Digestion Absorption of Water, Alcohol  Small Intestine: Main Position for Digestion & Absorption (Mechanical/Physical, Chemical, Enzymic)  Large Intestine: Water Absorption

Position of Digestion & Absorption  Mouth: Food Intake, Mechanical/Physical Digestion  Esophagus: Food Pass-way  Stomach: Storage Mechanical & Chemical Digestion Absorption of Water, Alcohol  Small Intestine: Main Position for Digestion & Absorption (Mechanical/Physical, Chemical, Enzymic)  Large Intestine: Water Absorption

Food Motive Speed in Gut  The Length of Gut: 7.5-9.0 m  Food staying in Gut: 1. Liquid: 15-30min 2. Solid or Half-solid: 2-6h 3. Empty in Stomach: > 12h (in the morning) 4. Ejection: 20-36h For Digestion & Absorption Enough

Food Motive Speed in Gut  The Length of Gut: 7.5-9.0 m  Food staying in Gut: 1. Liquid: 15-30min 2. Solid or Half-solid: 2-6h 3. Empty in Stomach: > 12h (in the morning) 4. Ejection: 20-36h For Digestion & Absorption Enough

Nutrition: This is a processing of physiological and biochemical exchange in body Nutrients: These materials from foods and others Diet: Food composition 生理需求 感官享受 心理享受

Nutrition: This is a processing of physiological and biochemical exchange in body Nutrients: These materials from foods and others Diet: Food composition 生理需求 感官享受 心理享受

Food-Nutrient-Nutrition Objectives Concept Food：Containing various nutrients in one Foods: Various nutrients combining each other to be a reasonable complex diet Processing：Goods Products Scientifics

Food-Nutrient-Nutrition Objectives Concept Food：Containing various nutrients in one Foods: Various nutrients combining each other to be a reasonable complex diet Processing：Goods Products Scientifics

Nutrients & Nutrition Sources

Nutrients & Nutrition Sources

Good N Suitable supplying quantity Reasonable ration Various kinds of foods Nutritional Balance

Good N Suitable supplying quantity Reasonable ration Various kinds of foods Nutritional Balance