Chapter 7 - VITAMINS
Chapter 7 - VITAMINS NUTR 214 - 01
Popular in Introduction to Nutrition
NUTR 214 - 01
verified elite notetaker
Popular in Nutrition and Food Sciences
This 7 page Class Notes was uploaded by Samone Hodges on Monday October 5, 2015. The Class Notes belongs to NUTR 214 - 01 at Radford University taught by Rachel Werkheiser in Summer 2015. Since its upload, it has received 30 views. For similar materials see Introduction to Nutrition in Nutrition and Food Sciences at Radford University.
Reviews for Chapter 7 - VITAMINS
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: 10/05/15
Chapter 7 The vitamins Definition and classification of Vitamins 0 Vitamin 0 Essential noncaloric organic 0 Role of Vitamins 0 Vitamin precursors proVitamin 0 Needs to be converted into an active form in the body 0 Classes fat soluble nonsoluble 0 Absorption 0 Fat soluble O ADEK I Food sources 0 Storage liver fatty tissues I Toxicity can reach toxic levels is too much is consumed stored I Do not need to consumed every day 0 Deficiency not common in US I Not taking in too much fat I May be found in hospitals patients only getting fed calories 0 Diverse roles Within the body I AD acts similar to hormones can in uence cellular activity I E antioxidant helps protect tissues from oxidative stress 0 Vitamin A O Precursor I Beta carotene vegetables fruits orange muddy green 0 Three active forms in the body I Retinol I Retinal active Vitamin A I Retinoic 0 Food sources I Animals I Plants 0 Roles consequences of deficiency Vitamin A I Eyesight I Processes light perception in retina 0 Maintains healthy cornea I Rhodopsin molecule breaks off Vitamin A Night blindness 0 Deficiency of Vitamin A Xerophthalmia and blindness 0 Keratinization of cornea O Deficiency 0 Xerosis Gene regulation 0 Retinoic acid Roles consequences of deficiency vitamin A Cell differentiation vitamin A needed 0 Vulnerable to infection Immune function 0 Downward spiral of malnutrition and infection Growth 0 Bone and health Deficiency around the world 0 Work of WHO and UNICEF 0 Vitamin toxicity Supplements and fortified foods Symptoms Higher risk groups Recommendations 0 Based on body weight 0 Man 900 mg 3000 mg 0 Woman 700 mg 3000 mg Food sources 0 Liver 0 Fish oils 0 Milk Beta carotene antioxidant not converted in vitamin A enough to provide deficiency 0 Colorful groups Mascular degeneration Dietary antioxidant Measuring betacarotene 0 Retinol activity equivalents RAE Toxicity 0 Food sources 0 Sweet potatoes oranges pumpkin mango O Spinach kale broccoli bell peppers 0 Vitamin D 0 Body can synthesize all it needs 39 Sunlightfood I Must go through chemical changes in liverkidneys to make it active 0 Estimated deficiency prevalence 39 Groups at risk 0 Higher levels of obesity 0 Fat storage keeps vitamin D from absorbing into the blood stream 0 No sun exposure 0 Roles 39 Calcium regulation 0 Acts at three locations to raise calcium level Other roles 0 Hormones O Acts at the genetic level Deficiency 0 Rickets 0 Osteomalacia 0 Osteoporosis 0 Groups to be concerned 0 Black overweight women 0 Most toxic to bones kidneys brain nerves heart arteries soft tissues 0 Increases blood calcium concentrations I Kidney and heart failure 0 Risks of high doses 0 Risk of moderate doses From sunlight 0 Ultraviolet rays 0 Cholesterol compound 0 Role of the liver and kidneys 0 Skin pigments 0 Factors that interfere With vitamin D synthesis Food sources 0 Milk fortified products Sunshine 0 Free not safe 0 Skin cancer 0 Tanning booths 0 Vitamin E antioxidant O O O Tocopherols Roles I Antioxidant 0 Deficiency I in ammation I Immunity Deficiency I Obese people I Premature babies 0 Transfer of Vitamins from the mother to the infant is skipped Toxicity I Dietary intake V supplemental intake Recommendation I Adults 15 mg Food sources I Raw oils seeds salad dressings Can be destroyed When you process oils 0 Vitamin K O O Roles I Blood clotting help synthesize proteins that help blood clotting I Bone proteins synthesis of bone proteins Deficiency I Newborn infants Toxicity I J aundice Requirements Food sources I Lettuce kale dark leafy green Can be made in gut microbiome The watersoluble vitamins I Dissolved directly into blood I Dissolve in water bad to wash or process 0 Absorption 0 Transport 0 Excretion I Sources 0 Food never deliver toxic dose I Fruits vegetables 0 Supplements toxicity appears here I VITAMIN C O Roles I Connective tissues 0 Collagen I Carnitive I Anitioxidant 0 Protects iron 0 Prooxidant I Cure the common cold 0 Deficiency I Scurvy I Smokers 0 Toxicity gt2000 MG 0 Recommendations 90 mg men 70 mg women I Tobacco use I Physical stressors 0 Food sources I Fruits vegetable white potatoes 0 Destruction of vitamin C I Heat oxygen I THE B VITAMINS IN UNISON 0 Functions as part of coenzymes I Combines with enzyme to activate it 0 Roles in metabolism I HELP the body use the energyyielding nutrients for energy 0 Cell multiplication O Deficiency I Every cell is affected I Symptoms I Nausea depression skin problems I Rarely are isolated deficiencies 0 Hard to tell which one I THIAMIN 0 Energy metabolism of all cells 0 Nerve cell membranes 0 Deficiency I Beriberi I Alcohol abuse 0 Alcohol impairs thiamin absorption 0 DRI recommendation men 12 mgday women 11 mgday I Food sources 0 Whole grain cereals beans I RIBOFLAVIN O Deficiency I Little amount of meat and milk consumed 0 Dietary sources 0 Destruction of Vitamin I UV light milk doesn t come in clear container I Irradiation I Heat I NIACIN O Participates in energy metabolism 0 Deficiency I Pellagra 0 Diarrhea 0 Dementia 0 Dermatitis 0 death 0 Toxicity I Physician administration 0 Drops in blood pressure I Niacin ush painful 0 Recommendations I FOLATE O Helps in synthesizing DNA and making cells 0 Deficiency I Risk of cerVical breast prostate cancer I Birth defects 0 Neural tube defects NTD Toxicity I UL 1000 mgday 0 Recommendations I Mask B 12 deficiency 0 Food sources I Enriched grain products green leafy vegetables raw fruits O Destruction of folate I VITAMIN B 12 O Closely relate to folate I Need each other to act 0 Maintenance of sheaths around nerve fibers 0 Deficiency I Immature red blood cells anemia I Pernicious 0 Vitamin B 12 absorption 0 O I Intrinsic factor 0 Compound of stomach needed to absorb B 12 0 Lack of intrinsic factor B 12 shot Food sources I Animal foods 0 At risk vegans I VITAMIN B6 0 O O O Converts one lacking amino acid into another Participates in gt100 reaction Deficiency I Neurological Toxicity excess B6 I Trouble walking Food sources I Whole grains I BIOTIN AND PANTOTHENIC ACID 0 O 0 Important for energy metabolism Biotin I Cofactor for enzymes I Gene expression I No UL Pantothenic acid I Key enzyme
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'