EFECTORI BIOCHIMICI

CLASIFICAREA VITAMINELOR

Vitamine

hidrosolubile

liposolubile

complexul B

vitamina C (acid ascorbic)

vitamina B 1 (tiamina)vitamina B 2 (riboflavina)vitamina B 3 (niacina)vitamina B 4 (acid pteroilmonoglutamic)vitamina B 5 (acid pantotenic)vitamina B 6 (piridoxina)vitamina B 7 biotina)vitamina B 12 (cian-cobalamina)

vitaminele A (retinoli)vitaminele D (calciferoli)vitaminele E (tocoferoli)vitaminele K (menaftone)

vitamine P (bioflavonoide)

VITAMINA B1 STRUCTURA CHIMIC

Are n structur un nucleu pirimidinic i un nucleu tiazolic legate ntre ele printr- grupare

metilenic

N

N

CH2

H3CNH2

N

S

CH3

CH2 CH2 OH

+

Vitamina B1

VITAMINA B2 STRUCTURA CHIMIC

N

N ON

NH

H3C

H3C

rest izoaloxazinic

rest ribitil

vitamina B2

CH2 CH(OH) CH(OH) CH(OH) CH2 OH

VITAMINA B3 STRUCTURA CHIMIC

N

COOH

N

CO-NH2

Acid nicotinicVitamina B3

Nicotinamida

VITAMINA B4 STRUCTURA CHIMIC

N

N N

N

NH2

OHCH2 NH CO N

HCHCOOH

CH2 CH2 COOHA B

Pteridina

Acid p-amino- benzoic

Acid glutamic12

3

45

6

78

9 10

Acid pteroic

Acid folic ( pteroilglutamic )

VITAMINA B5 STRUCTURA CHIMIC

HO CH2 C

CH3

CH3

CH

OH

CO NH CH2 CH2 COOH

rest de acid pantoic rest de

- alanina

VITAMINA B6 STRUCTURA CHIMIC

N

OH

CH3

CH2OHCH2OH

N

OH

CH3

CH2OHCHO

N

OH

CH3

CH2OHCH2NH2

piridoxina piridoxal piridoxamina

VITAMINA B12 STRUCTURA CHIMIC

VITAMINA C

C1C2

OOH

C3C4

OH

HC5OH HCH2OH

O

EFECTORI BIOCHIMICICLASIFICAREA VITAMINELORVITAMINA B1 STRUCTURA CHIMICVITAMINA B2 STRUCTURA CHIMICVITAMINA B3 STRUCTURA CHIMICVITAMINA B4 STRUCTURA CHIMICVITAMINA B5 STRUCTURA CHIMICVITAMINA B6 STRUCTURA CHIMICVITAMINA B12 STRUCTURA CHIMICVITAMINA C