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T C Wang1, M C Ti, S C Lo

  • 1Department of Food Science and Technology, National Pingtung University of Science and Technology, Pingtung, Taiwan, ROC. elderobrother@yahoo.com.tw

Fitoterapia
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The presence of electron-donating, electron-withdrawing, or conjugating groups adjacent to a radical center, imparts electronic stabilization to the radicals. Examples of such electronically-stabilized radicals are triphenylmethyl, tetramethylpiperidine‐N‐oxide, and 2,2‐diphenyl‐1‐picrylhydrazyl. These radicals are remarkably stable and are known as persistent radicals. Some of the persistent radicals can even be isolated and purified.
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