Why You Should Only Apply Antioxidants at Night [DermTV.com Episode #138]
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Why You Should Only Apply Antioxidants at Night [DermTV.com Episode #138]
www.DermTV.com Become a fan on Facebook www.facebook.com For topical antioxidants to work most effectively, you should apply them at nighttime. Dr. Schultz explains why.
Watch Why You Should Only Apply Antioxidants at Night [DermTV.com Episode #138]
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Why You Should Only Apply Antioxidants at Night [DermTV.com Episode #138]
Q&A – Is there a simple assay that could test the antioxidant content level in various foods?
I want to perform a science fair project on the possible differing antioxidant content levels in fruits and vegetables before and after being cooked by various methods, but do not know how to test for the antioxidant levels in a relatively cheap and simple way.
Is there a simple assay that could test the antioxidant content level in various foods?
What do you think? Answer below!
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I’m not sure how cheap it is, but there are simple assays available. I’ve included links to a couple of relevant articles. You’ll want to visit a local university to read these, and may need a science teacher to help translate them. Basically ignore any method that uses GC, MS, HPLC, or any other method that mentions a machine you’ve never used because chances are you don’t have access to such a machine yet.
That leaves assays that use a dye or colored substrate, which is bleached by peroxide (oxygen free radicals). The idea is, the more antioxidant there is available, the less oxygen free radical there is to bleach the dye. You will still probably need a spectrophotometer, but every high school biology lab has at least one. DPPH or beta-carotene bleaching sounds promising, but I have no direct experience doing this.
Your best bet, if you’re not shy, is to make an appointment with the chairman of the biology (or biochemistry or chemistry) department at your local university, and tell them what you want to do and ask for help. They may not be able to help you, but they’ll know someone who can.