PubMed Health⌕ Search

Biomedical subjects

I Hook

Publications and source records attributed to I Hook.

4 recordsLinked to original sources

Neutral and basic taxoid contents in the needles of Taxus species.

The concentrations of paclitaxel, 10-deacetylbaccatin III (10-DAB III), basic taxoids (= "total alkaloids", TA), taxine B and isotaxine B (= "taxines B", TBS) in the dried needles of 127 trees belonging to 30 Taxus cultivars and species were determined by HPLC. Neutral and basic taxoid contents varied in individual trees within species as well as among varieties and species. The objective of this large analysis was to select the highest-yielding trees for each metabolite.

Alkaloids↗

Taxol content of Irish yews.

The average annual taxol content of shoots with dark green needles from Irish Yew (Taxus baccata var. fastigiata) was found to be 0.0075%. Maximum levels were recorded in April (0.010%) and minimum in February. Golden-leaved ("aurea") varieties contained only traces of taxol. Shoot growth took place mainly between May and July.

Analysis of Variance↗