fleshy tap roots 肉质直根
From the tap root of Panax notoginseng,ten compounds were isolated by repeated column chromatography with silica gel and C18. Their structures were identified by spectroscopic methods as ginsenoside Rh4(1),notoginsenoside R2(2),ginsenoside Rh1(3),ginsenoside F1(4),20(S)-ginsenoside Rg2(5),3-O-β-D-glucopyranosyl-(12)-β-D-glucopyranoside-12β,25-dihydroxydammar-(E)20(22)-ene(6),vinaginsenoside R15(7),vinaginsenside R3(8),pseudoginsenoside RT3(9),and 6-O-(β-D-glucopyranosyl)-20-O-(β-D-xylopyranosyl)-3β,6α,12β,20(S)-tetrahydroxydammar-24-ene(10),respectively.
利用硅胶、C18等柱色谱技术对三七(Panax notoginseng(Burk)F.H.Chen)主根中微量成分进行分离纯化,分离得到10个化合物,通过NMR、MS等波谱技术鉴定化合物的结构,10个化合物分别为:人参皂苷Rh4(1),20(S)-三七皂苷R2(2),人参皂苷Rh1(3),人参皂苷F1(4),20(S)-ginsenoside Rg2(5),3-O-β-D-glucopyranosyl-(1→2)-β-D-glucopyrano-side-12β,25-dihydroxydammar-(E)-20(22)-ene(6),vinaginsenoside R15(7),vinaginsenoside R3(8),pseudoginsenoside RT3(9),and 6-O-(β-D-glucopyranosyl)-20-O-(β-D-xylopyranosyl)-3β,6α,12β,20(S)-tetrahydroxydammar-24-ene(10)。
参考来源 - 三七主根的微量皂苷类成分研究·2,447,543篇论文数据，部分数据来源于NoteExpress
In Burkina Faso, TAP USES large networks of small patient organizations that were built up from the grass-roots level by people living with HIV and others affected by the AIDS epidemic.
在布基纳法索，“治疗加速项目”利用了由艾滋病病毒感染者和其它受艾滋病影响的人在基层建立的小型病人组织的广泛网络。
He was like a tree that has not many roots, but one tap-root that goes down deep.
他就像一棵大树，根不多，但有自来水根停机深。
Type of root system (tap or fibrous) and density of roots.
根系类型(直根还是须根)和根系密度。
应用推荐