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Introduction to Micronutrients
Buxbaum
14
Biochemistry
Professional
02/06/2013

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Cards

Term
EAR
Definition
Estimated Average Requirement

-intake meets requirements of half the healthy individuals in a group (sex/age)
Term
RDA
Definition
Recommended Dietary Allowance

*best judgement of a group of experts on the daily amounts that are sufficient & safe for a healthy individual

-EAR + 2 standard deviations
Term
UL
Definition
Tolerable Upper intake Level

-highest level of daily intake that is likely to pose no rosks of adverse health effects to almost all individuals

*NO toxicity risk when below UL
Term
AI
Definition
Adequate Intake

-intake of a healthy reference population where data are insufficient to determine EAR, and thus RDA
Term
DRI
Definition
Dietary Reference Intake

-includes EAR, RDA, and UL
Term
USRDA
Definition
US Recommended Daily Allowance

-highest RDA based on 1968 recommendations
*on food packaging products
Term
Enrichment
Definition
nutrients are added solely to replace losses during food processing (wheat, rice)
Term
Fortification
Definition
extra nutrients are added to the food (iodized salt)
Term
Supplementation
Definition
Nutrients separate: 50-150% RDA

No difference between "natural" & "synthetic"
Term
Provitamin
Definition
can be converted into the active vitamin

*Carotene --> Vitamin A (in carrots)
Term
Anti-vitamin
Definition
vitamin antagonist

-sulphonamides, methotrexate (anti-folates)
Term
Mass Element Minerals
Definition
needed in amonts of more than 100 mg/d

(Ca, Mg, Na, K, Cl, P)
Term
Trace Element Minerals
Definition
needed in amounts greater than 1 mg/d

(Fe, Zn, Cu, Mn)
Term
Ultratrace Element Minerals
Definition
needed in amounts of less than 1 mg/d

(As, B, F, I, Se, Cr, Co, Mo, Si, V, Ni, Sn)
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