( 111)

Entrance to the Principles of Nutrition 111 / .1

1 :. 111 / .2

111 / .3 : . . . . .

: . / 101 128 111 / .4 111 / .5 1 265 3 4 7 85Introduction to proteins6 / . . . .

.7 111 / .

20% 50% 20% 10% .

8 111 / .

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: Exogenous Protein . Endogenous Protein .

9 111 / . : 10 111 / .

: : . . .

111 / .11

11 . Protein Turnover . 10 4 120 . ( ) 240 . 111 / .12 . . . 111 / .1314 111 / .

Chemical composition of proteins Chemical composition of proteins .

16 % . : .

15 111 / .

Chemical composition of proteins ( ) .

16 111 / .

Chemical composition of proteins . .

17 111 / .

18 111 / .

Amino Acids Amino Acids 22 .19 111 / . 2. Non- Essential Amino Acids (neaa) 1. Essential Amino Acids (EAA) . 40%. : .

. : . . 111 / .20 Nitrogen balance . .

Nitrogen balance . = At equilibrium, . Negative nitrogen balance . Positive nitrogen balance . 111 / .21

( ) ( ) . . ( ) ( ) . 111 / .22

111 / .23

Classification of proteins 24 111 / . : Physical and chemical properties) Simple proteins: : ( ).

) Conjugated proteins: ( ) ( ) ( ) ( ) ( ) .

) Derived proteins: : ( ) .25 111 / .: Nutritional properties1. Complete proteins ( ) ( ) () , 33% 66% . 26 111 / .2. Incomplete proteins ( ) ( ) . 25% .

: Nutritional properties27 111 / .3. Partially complete proteins . : . 111 / .28: Nutritional properties

Functions of proteins 29 111 / . Proteins functions : : ..... .

30 111 / .

30 Proteins functions : ( ) ( ) . 1 4 . .

31 111 / .31 Proteins functions : . .

32 111 / .

32 Proteins functions : ( PH ) ( PH = 7.2 ) . ( COOH ) (NH2 ) . .

33 111 / .

33 Proteins functions . . .

34 111 / .

34

Requaierments of proteins 35 111 / . Proteins Requirements 0.8 . . . . :http://www.bupa.com.sa/Arabic/HealthandWellness/HealthTools/Pages/Protein-Intake-Calculator.aspx36 111 / . Protein Quality : High quality proteins .

37 111 / .2. Low quality proteins , .

38 111 / . Protein Quality . . . . 111 / .39

Dietary sources of proteins 40 111 / . Dietary Sources of Proteins : : : ( ) ( ) ( ). . .

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:

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111 / .43Protein diet to lose weight . ( ) . . . . 111 / .44

: . . ( ) . . . . .

111 / .45 Proteins Deficiency : . : . . . . . . .. () . 111 / .46

111 / .47

. . (-) . " HCAs" " PAHs" . . ( ) . 111 / .4849 111 / .

Disorder of protein metabolism

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111 / .50 111 / .51 . . /. . . . . . . . .

:

52 111 / .

. ( ) . - . 111 / .53 : : :1. : : : . . . 32 .

111 / .54 Pre-Workout Supplements Post-Workout Supplemen . N .O . 54 : 2. : .

: ( ) .

: () . 111 / .55 Pre-Workout Supplements Post-Workout Supplemen . N .O . 55 : 111 / .56 .. ( 2 ) (2.5 ) ( 1 ) ( 0,8 ) . 111 / .57 : . . . : : : . . . . : .

111 / .58

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