One kind of brown coloring matter has been extracted from skin of Quercus acutissima seed and it has good light resistance, heat resistance and anti oxidative ability.
从橡子皮中提取得到了一种棕色色素，该色素具有良好的耐光、耐热和抗氧化性能。
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The results showed that the extraction technology was reasonable, the yield of total flavonoids was high, and extraction of Q. acutissima leaves had strong antioxidant activities in vitro.