对金缕梅单宁的研究表明， 金缕梅树皮提取物含量是叶子的31倍，茎的87倍。

Assay of hamamelitannin shows that Witch Hazel bark extract is 31 times richer in hamamelitannin than the leaf extract and 87 times richer than the stem extract.

youdao

对金缕梅单宁的研究表明， 金缕梅树皮提取物含量是叶子的31倍，茎的87倍。

Assay of hamamelitannin shows that Witch Hazel bark extract is 31 times richer in hamamelitannin than the leaf extract and 87 times richer than the stem extract.

youdao