The oleanolic acid content in stems at flowering and early flowering stage are all high, and the early flowering stage higher than the final flowering.
叶中齐墩果酸含量在终花期达到最高，而花中齐墩果酸含量在盛花期达到最高，盛花期之后逐渐下降。
The above data suggested that the content of total flavone, vitamin C and oleanolic acid decreased obviously during the fermentation but their relative content remained high.
发酵过程中总黄酮、维生素C、齐墩果酸含量明显下降，但相对含量仍很高。
The content of oleanolic acid in grape skin was about 1% and satisfied the demands of industrial production.
葡萄中齐墩果酸主要存在于葡萄皮中，含量可高达1%左右，符合工业化提取要求；
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