Download Water soluble vitamines

Water soluble vitamins
** vitamin C :
-
found in lemon juice to prevent scurvy .
chemical name of vit c is ascorbic acid .
like glucose structure .
easily destroyed by alkaline , high temperature & o2
don’t cut vegetables into small pieces until time of
use ,keep juice tightly closed .
easily absorbed from small intestine .
cows milk contains very little vit C .
**functions :
Has role in cell metabolism .
Build & maintain body tissue { bone matrix
,cartilage ,connective tissue }
** high concentration of vit C found in :
Adrenal gland ,brain liver ,kidney ,pancreas ,thymus
& spleen
Vit C has role in formation of RBCs
Vit C is necessary for syntheses of hormone as nor
adrenaline
vit C play role in wound healing
vit c enter in formation of neurotransmitter of brain
vit C help in resistance of fever & infection
additional vitC required for growth during
childhood ,pregnancy & lactation
source of vit C : citrus fruit ,tomatoes sweet
potatoes green vegetables .
- * signs & symptoms of vit C deficiency :
- *-weak capillaries ,& easily ruptured by trauma,
bleeding gums [ gingivitis ]
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B- vitamins
- vit B 1 ,B 2, B 6 ,B 12
- act as co-enzyme
** Vit B 1 :
-
called thiamine
water soluble vit
destroyed by alkaline substance
well absorbed in acidic media especially in the
duodenum
has role of metabolism
deficiency of vit B 1 called : Beriberi
** signs & symptoms of Beriberi :
1-aneroxia
2-indigestion
3-constipation
4-parlysis
5-edema of lower limb
6-muscle pain
** the need of vit B 1 is increased during pregnancy
,lactation ,infancy ,childhood ,adolescence
- ** Riboflavin [ vit B 2 ]:
-
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Yellow –green pigment
Water soluble
Destroyed by light
Absorbed in the upper part pf small intestine [
intestinal mucosa ]
Milk decrease absorption of B vit B 2
Act as co-enzyme
Has role in production of energy
Aid in tissue building
Deficiency of bit B 2 lead to : tissue inflammation
& break down , poor wound healing ,cracked lip
,swollen tongue
- *pyridoxine : { vit B 6 }
-
Water soluble vit
Sensitive to light
Absorbed in the upper portion of the intestine
Has role in protein metabolisms
Bit B 6 regulate brain activity
Neuritis is deficiency of this vit .
**cobalamine : { vit B 12 }
Deficiency of this vit lead to pernicious anemia
-source of this vit is mainly from animal origin
- absorption of cobalamin in the ileum
-this is common in vegetarian .
-
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