Institute of Food Chemistry, Technische Universitat Braunschweig, Schleinitzstr. 20, D-38106 Braunschweig, Germany.
Nat Prod Res. 2009;23(17):1621-9. doi: 10.1080/14786410902975673.
The isolation and structural elucidation of the novel myricetin-3-O-[beta-D-glucopyranosyl-(1 --> 3)-alpha-L-rhamnopyranosyl-(1 --> 6)-beta-D-glucopyranoside] from tea (Camellia sinensis (L.) O. Kuntze) by means of HPLC-MS/MS and various NMR techniques is described. The compound was not present in all tea samples analysed. In the case of white tea, it was detected in 20 out of 40 samples analysed (35-255 mg kg(-1)), in green tea it was detected in 18 out of 35 samples in the same concentration range (37-205 mg kg(-1)), while it was found only in 1 sample (51 mg kg(-1)) of 5 black teas analysed.
从茶叶（Camellia sinensis（L.）O. Kuntze）中通过 HPLC-MS/MS 和各种 NMR 技术分离并结构鉴定出新型杨梅素-3-O-[β-D-吡喃葡萄糖基-（1→3）-α-L-鼠李吡喃糖基-（1→6）-β-D-吡喃葡萄糖苷]。该化合物并非存在于所有分析的茶样中。在白茶中，在 40 个分析样品中的 20 个样品中检测到（35-255mgkg(-1)），在绿茶中，在相同浓度范围内的 35 个样品中检测到 18 个样品（37-205mgkg(-1)），而在分析的 5 个黑茶样品中仅在 1 个样品中发现（51mgkg(-1)）。
