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Fat-SolubleiVitaminsi-iCorrectiAnswer-VitaminiA
VitaminiD
VitaminiE
VitaminiK
Water-SolubleiVitaminsi-iCorrectiAnswer-BicomplexiplusivitaminiC
Requirediinidiet
Actiasienzymeicofactors
Deficienciesiuseditoibeicommon
Peopleionipooridietsioftenideficientiinimultipleivitamins
BiVitaminsi-iCorrectiAnswer-Thiamini(B1)
Riboflavini(B2)
Niacini(B3)
Biotin
PantotheniciAcid
VitaminiB6
Folate
,VitaminiB12
DietaryiReferenceiIntakesi-iCorrectiAnswer-AdequateiIntake
TolerableiUpper-IntakeiLevel
EstimatediAverageiRequirement
RecommendediDietaryiAllowance
PropertiesiofiWateriSolubleiVitaminsi-iCorrectiAnswer-Dissolveiiniwater
Noirealistores
Readilyiexcreted
Function:icoenzymesiandiantioxidants
Absorbedibyiportalisystem
Notirequiredidaily
Highidosesicanibeitoxic
Subjectitoicookingiandifoodistorageilosses
PropertiesiofiFatiSolubleiVitaminsi-iCorrectiAnswer-Fatisoluble
Storediinitissues
Remainiiniadiposeiandiliver
Function:ihormones,ibloodiclotting,iantioxidants
Absorbedibyilymphaticisystemiwithifatsi(chylomicrons)
Notirequiredidaily
,Highidosesicanibeitoxic
Digestioniofifatisolubleivitaminsi-iCorrectiAnswer-
Requireibileiacidsiforiabsorption
Requireidigestiveienzymesiforiabsorption
Absorbediinitheisimilarimanneriofifats
LittleivitaminiKiproductionibyigutibacteria
Retinoli-iCorrectiAnswer-VitaminiA
Retinali-iCorrectiAnswer-VisualiCycle
Retinoidsi-iCorrectiAnswer-
Supportidevelopment,igrowth,ireproduction
Epitheliai(skin,irespiratory,iandidigestiveisystems)
ImmuneiSystem
NervousiSystem
, VitaminiAiinitheiLiveri-iCorrectiAnswer-
LiveribreaksidownisomeivitaminiAiintoiretinoiciacidiandisavesitheirestifo
ristorage
RetinoiciAcidi-iCorrectiAnswer-Reproduction
NervousiSystem
Epitheliai(skin)
ImmuneiFunction
RecommendediDietaryiAllowanceiofiVitaminiAi-iCorrectiAnswer-
0.3imgitoi1.3img:iage,isex,ipregnancy,ilactation
ToxiciIntakei-iCorrectiAnswer-100ifoldi>iRDAiiniadults
20ifoldi>iinichildren
VitaminiKi-iCorrectiAnswer-Koagulation
MechanismiofiVitaminiKiActioni-iCorrectiAnswer-
i)iTargetediProteini(e.g.iprothrombin)
ii)iVitaminiK-dependentienzyme
iii)iModifiediProteiniBindsiCa++(e.g.ithrombin)