...物在长期自然选择中产生的一些次级代谢物，它们是一类以2-苯基色原酮（C6-C3-C6）为母核的多酚化合物（polyphenolic compounds）．在发挥抗肿瘤活性时，均有A环与受体的负电荷中心结合，C环与受体的正电荷中心结合，其他部位通过氢键与受体发生作用的共性。
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tea polyphenolic compounds 茶多酚类化合物
OBJECTIVE: To study the anticarcinogenic mechanism of polyphenolic compounds in tea.
目的：探讨儿茶素类化合物的抗癌作用机制。
It is believed that the hydrogen bonding between the polymer and the polyphenolic compounds are responsible for the catalytic effect.
从聚合物膜与多酚化合物的氢键作用对催化机理进行了探讨。
When bombarded with ultraviolet rays from the sun, the lettuce leaf creates UV-absorbing polyphenolic compounds in its outer layer of cells.
当来自太阳的紫外线轰击到莴笋时，莴笋叶子就会在外层细胞创造吸收紫外线的多酚类物质。
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