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| - In addition, certain plant extracts have been reported as having antioxidant properties, including extracts from birch Betula platyphylla) (JP-A-10-046143) and various plant extracts obtained by extraction, with water or a lower alcohol or an aqueous lower alcohol solution, of plants such as hibiscus, aloe, rhubarb, osei (polygonati rhizoma), bearberry leaf, enmeiso (plectranthi herba), yobaihi (n
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