NTDT401 Lecture Notes - Lecture 2: Reactive Oxygen Species, Citrus, Dietary Fiber
20 Dec 2016
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Document Summary
50% people take supplements, 90% of those 50% take vitamin c involved with antioxidants; lower risk for fatty streaks involved in protein making collagen (makes up 1/3 of body) Transforms collagen rather than makes it involved in making neurotransmitters; brain functions involved in immunity fuctions (and antioxidants) Humans cannot make this enzyme (gulonolactone oxidase) Right side= oxidized form (dhaa: giving away hydrogen will be oxidized. Ascorbic acid is ready to be used and dehydroascorbic acid can be recycled back to ascorbic acid by dehydroascorbate reductase. Give away 2 electrons to be stabilized (benefit of antioxidants) Vitamin c, once oxidized, is stable and not a radical. *vitamin c structure is so similar to glucose (6 carbon), some of the insensitive tests for glucose measurements can be fooled by high levels of vitamin c. *vitamin c is a small compound compared to others so wont affect utilization; can be easily absorbed. Citrus fruit, papaya, cantaloupe, cauliflower, broccoli, green peppers, strawberries.
