Understanding Vitamins - overview
Understanding Vitamins - overview Nutrition 230
Popular in Basic Nutrition
Popular in Nutrition and Food Sciences
This 1 page Test Prep (MCAT, SAT...) was uploaded by Molly Febo on Monday February 2, 2015. The Test Prep (MCAT, SAT...) belongs to Nutrition 230 at a university taught by Ronnenberg in Spring2015. Since its upload, it has received 196 views.
Reviews for Understanding Vitamins - overview
Report this Material
What is Karma?
Karma is the currency of StudySoup.
You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!
Date Created: 02/02/15
Underl Vitaminsorganic compounds required in small amounts in the diet to promote and regulate the chemical reactions and processes needed for growth reproduction and health Dietary de ciencies I u A u A LI IUUHII I There s only few widespread nutrient de ciencies in the United States yet vitamin supplementation is a billion Excesses of some vitamins can also be there is evidence linking reduced risk of some diseases and vitamin intake However this does NOT mean that le Basic Diqstion Elgwinquu if f break I rl 39I1 jquotlacr Te cl momma Em FragUM Anatomy of the Vitamins 39 l ll39IiI39Er hr V I Emmi l I L m 51mm Differs from CHO fat and S lul t WW g V j i5 39 protein due to amount 39 emfa needed by the body V 39 1v 5mgle 0 Only may need V A WWPHD microgram fler li t Bimini Engaging 91m Vitamins are NOT a source of 153 quotf 7 wealbed by H m dgqugmahf V algalng ind imma rdcmx ehergy I HELMPQEJ 3 VV J rfggg m vulmams Vitamins play a role In I luggage energy metabolism reactions uh C no quotii mt l Vitamins are individual units s gd in e 39 r 7 They are organic compounds 7 V39Wmm in39 ou ii r Purim m l mgrlion f ll gzblmf Emil l ileum oil small u39nrl sj 39ne I bjurPlion nfsmal l Exam an anmln K ii m39 aquot Puntnilltnic in m I gawngg nkgm Food sources Almost all foods contain some vitamins You can t get adequate amounts of all vitamins in just one food source or even one food group Amounts of speci c vitamins in foods depend on things like plants vegetables fruits grains and sunlight growing conditions plant s maturity at harvest The animal s diet can even have an effect on the vitamin content in animalderived foods Vitamin content can be affected by cooking storage and processing Vitamins can be added to foods through forti cation Enrichment is the Storage and Toxicity Fat soluble vitamins A D E and K stored in liver and adipose tissues to be drawn from in times of need with these stores you can go days weeks or months without consuming any more of those vitamins However too much intake of these vitamins can exceed storage and lead to toxicity Water soluble vitamins B vitamins and C body doesn t store them so daily intake is crucial Small variations in intake don t cause problems However large amounts of vitamin C folate niacin and Ba can be problematic yet it takes about 2040 days of vitamin C de ciency before symptoms start to emerge People who take mega doses of one or more vitamins run the risk of toxicity restorations of vitamins that have Provitamins Basically vitamin precursors vitamins that aren t in their active forms Once a provitamin is ingested the body will convert it to its active form Example betacarotene turned into vitamin A in the body Once beta carotene is absorbed in the body it can be cleaved in the middle to yield two molecules of vitamin A Fatsoluble vs Watersoluble Vitamins A D E and K are lipidlike molecules that are soluble in fat B vitamins and C are soluble in water The difference in solubility effects the way the body absorbs transports transports and stores vitamins Intestinal cells absorb fats and fatsoluble vitamins then travel through the lymph to the bloodstream and to the liver whereas watersoluble vitamins are dissolved in the watery compartments of foods once absorbed these nutrients travel directly into the bloodstream and then move independently in and around the cells of the body Only 2 vitamins are exceptions to this
Are you sure you want to buy this material for
You're already Subscribed!
Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'