{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Vitamins Sp18 outline WATER SOLUBLE.doc

Vitamins Sp18 outline WATER SOLUBLE.doc - HNF150 Spring...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
HNF150 Spring 2018 Lecture Notes VITAMINS Water-Soluble Vitamins: tend to not have an upper limit because the vitamins can be flushed out of our bodies 1. Absorption is simpler! Absorbed in early part of Small Intestine Portal vein liver then sent to bloodstream Except for B 12 -- absorbed in ileum and stored in liver 2. Storage in body tissues is minimal (except for Vit B 12 ) Excess is secreted through the kidneys in the urine Lower risk of toxicity than for fat-soluble vitamins 3. Easily lost or destroyed during cooking Heat, light, oxidation (air), pH changes Will leach into cooking water 4. Best to eat average requirements over 3 days (body doesn’t retain the excess, so need to get fairly consistently) 5. Seldom reach toxic levels REMEMBER: Whole grains and fortified grains Milling of grains causes loss of vitamins and minerals Removal of the germ and bran Germ = embryo of the seed, where oils, B-vitamins and trace minerals are held Flour fortification began in 1940s to replace some of these nutrients: - Thiamin - Riboflavin - Niacin - Iron - Folic acid (folate)- since 1998 Vitamin C = ascorbic acid Most animals can synthesize vitamin C from glucose except: some primates (us!), bats, guinea pig 1
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
HNF150 Spring 2018 Lecture Notes A. Functions: 1. Anti-Oxidant Recyclable electron donor Cofactor for metalloenzymes, keeps bound metal in reduced state 2. Collagen Synthesis Burn patients need additional Vit C to build new collagen 3. Synthesis of neurotransmitters and some hormones 4. Assists with iron absorption 5. Immune function 6. May help reduce risk of cancer and heart disease B. Food sources: Red pepper Orange juice Guava Kiwi Strawberries Papaya C. Vitamin C Deficiency = Lack of Vitamin C prevents the normal synthesis of collagen Widespread damage to connective tissues in the body Apparent after 20-40 days Signs of Scurvy: Fatigue, pinpoint hemorrhages around hair follicles, gum and joint bleeding, impaired wound healing, bone pain and fractures,psychological problems in advanced stages, diarrhea and death. B Vitamins = helpers (coenzymes) 2
Image of page 2
HNF150 Spring 2018 Lecture Notes Know thiamin, riboflavin, niacin, folate What is a coenzyme? Helpers, enzyme isn’t able to work if it doesn’t have coenzyme Thiamin A. Functions: 1. Helps generate energy from carbs, amino acids, and fat. 2. Synthesis of DNA and RNA 3. Functioning of nervous system- because brain needs glucose for energy. B. Deficiency: 1. Beriberi- “I can’t, I can’t”- sri lanka Quick! Some signs can develop in only 14 days without thiamin in diet Dry-inactivity with inadequate calories Symptoms: weakness, mental confusion and memory loss, lack of appetite and weight loss, nerve damage and muscle wasting. Wet-severe physical exertion and high carb intake Symptoms: Dry symptoms(above) plus GI and cardiovascular impairment, enlarged heart and congestive heart failure, EDEMA..
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern