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30 Cards in this Set
- Front
- Back
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What is an antioxidant |
Compounds that protect our cells from damage caused by oxidation |
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What is oxidation what is reduction |
-oxidation is loss of electrons -reduction is gain of electrons |
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What is a free radical and how does it form |
An atom that has lost an electron and is left with an unpaired electron |
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Are free radicals naturally-formed in our bodies |
Yes |
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What are some external factors that contribute to increasing free radicals |
Smoking radiation and chemicals |
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What type do damages do free radicals cause |
Cell membrane ldls cell proteins DNA |
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What are some potential diseases that are linked with high amounts of free radicals |
Cancer, heart disease, type 2 diabetes |
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What is the role of antioxidants |
-antioxidants can donate electrons to unstable atom to make it stable -antioxidants minerals act as co-factors (limit damage and Destroy free radicals) |
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What are the five major antioxidants |
-vitamin A -vitamin E -beta carotene -selenium -vitamin C |
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Explain what is occurring with vitamin E |
Vitamin E is stabilizing free radicals inside cell membrane |
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List five significant facts about vitamin E |
-primary role is an antioxidant -protects polyunsaturated fatty acids -protects low-density lipoproteins -important for fetal development -fat soluble |
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What is the difference between room temperature oils and heated oils |
Vitamin E antioxidants can be destroyed by heat |
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What are the top four Foods listed for vitamin E |
Sunflower, marinara, peanuts, avocado |
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Can we have toxicity with vitamin E supplementation |
Yes |
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What can occur if we have vitamin E deficiency |
Fragile red blood cells, loss of muscle coordination, impaired immune function |
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List five significant facts about vitamin C |
Prevents scurvy, enhance his immune system, reduces formation of nitrous a means, regenerate vitamin E after oxidation (vitamin c can donate electron) |
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What are nitrosamines |
Cancer-causing agents in cured meats |
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What does heat do to vitamin C |
Heat destroy vitamin C |
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Are we able to store vitamin C in our bodies |
No excess vitamin C is not stored and excreted |
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Explain the function of selenium and peroxide molecules |
Selenium functions as an antioxidant. It breaks down peroxides so free radicals cannot be formed. |
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List five facts about beta carotene |
-phytochemical -not an essential nutrient -a carotenoid with antioxidant properties -pro-vitamin -effects against oxidation in cell membranes and ldls |
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Is it better to eat beta carotene Foods cooked or raw |
Cooked, carotenoids are better absorbed from cooked Foods |
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According to common food sources of beta-carotene what are the top four Foods listed |
Pumpkin, sweet potato, spinach, kale, carrots |
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Five functions of vitamin A is involved in |
Vitamin is involved in immune functions, Vision, reproduction, and cellular communication |
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What is your age vitamin a recommendation for male and female |
900 mcg RAE for males, 700 mcg RAE for females |
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When you look at food sources, how much spinach do you need to eat to meet the requirements? |
A half a cup of boiled spinach yields 573 mcg, so I would double that to meet the requirements |
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When we look at food sources, how much carrots do you need to eat to meet the requirements |
A half a cup of raw carrots yields 459 mcg, so I would double that to meet the requirements |
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Is vitamin A deficiency common in the US |
No, more common in developing countries |
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What are they saying about breast milk (vitA) |
The concentration of vitamin A and breast milk is adequate for infants, but only up to 6 months |
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What are they saying about people with cystic fibrosis (vitamin A) |
most people with cystic fibrosis have pancreatic insufficiency, increasing the risk of vitamin A deficiency due to the difficulty with absorbing fats |
