南京师范大学：《营养学》课程PPT教学课件（英文版）第九章 Minerals and Elements

Minerals d Elements Professor Dr.Jin BQ Dept.of Food Sci.Nutrition

§1 Intriduction  Distribution 1. In the Earth: 2. In the Body: 20 kinds mainly, >70 kinds 3. Influence: Earth, Water, Food

§1 Intriduction  Distribution 1. In the Earth: 2. In the Body: 20 kinds mainly, >70 kinds 3. Influence: Earth, Water, Food

元素周期表 *

元素周期表 *

Classification 1 Macro-elements: or Minerals, Salts >0.01% in the body 7 kinds: Ca, P, Na, K, Mg, Cl, S 60-80% in total minerals Unit: g 2 Microelements: <0.01% or <0.005% in the body Unit: mg, µg

Classification 1 Macro-elements: or Minerals, Salts >0.01% in the body 7 kinds: Ca, P, Na, K, Mg, Cl, S 60-80% in total minerals Unit: g 2 Microelements: <0.01% or <0.005% in the body Unit: mg, µg

3 Essential Microelements: FAO/WHO in 1995: 10 kinds Cu, Co, Cr, Fe, F, I, Mn, Mo, Se, Zn WHO in 1973: 14 kinds Fe, Cu, Zn, I, Mn, Co, Mo, F, Se, Sn, Be,Ni, Si, V No substitute materials in body 4 Toxic Microelements: Pb, Cd, Hg, As 5 Others: Al, Li and so on

3 Essential Microelements: FAO/WHO in 1995: 10 kinds Cu, Co, Cr, Fe, F, I, Mn, Mo, Se, Zn WHO in 1973: 14 kinds Fe, Cu, Zn, I, Mn, Co, Mo, F, Se, Sn, Be,Ni, Si, V No substitute materials in body 4 Toxic Microelements: Pb, Cd, Hg, As 5 Others: Al, Li and so on

Typicality  Only from food and drink  Variety in different organs  Assisting and anti-assisting  Small quantity in body

Typicality  Only from food and drink  Variety in different organs  Assisting and anti-assisting  Small quantity in body

Physiological function  Important ingredients in body  Maintaining the balance of pH, osmosis and penetration in cell or in body  Transduction of Muscle and Nerve  Synthesis of functional materials

Physiological function  Important ingredients in body  Maintaining the balance of pH, osmosis and penetration in cell or in body  Transduction of Muscle and Nerve  Synthesis of functional materials

Deficiency  Distribution in the environment  Inhibitors in foods  Losing in food processing  Special requirement for human  Delaying action

Deficiency  Distribution in the environment  Inhibitors in foods  Losing in food processing  Special requirement for human  Delaying action

Safety Range (< 85%)

Safety Range (< 85%)

§2 Calcium  The first element in the body  Content: Adult 850-1200g in total Infant 28g at born ≌1.5-2.0% in BW  Renew: Adult 2-4% one year, 700mg/d >45 age 0.7% a year Baby 1-2 year in total p106-108

§2 Calcium  The first element in the body  Content: Adult 850-1200g in total Infant 28g at born ≌1.5-2.0% in BW  Renew: Adult 2-4% one year, 700mg/d >45 age 0.7% a year Baby 1-2 year in total p106-108