Studies on the Physicochemical Properties, Structure and Antitumor Activity of an Oligosaccharide Homologue SnS-2 from the Root of Scrophularia ningpoensis Hemsl.

An oligosaccharide homologue named SnS-2 was isolated from the root of Scrophularia ningpoensis Hemsl. SnS-2 was purified by means of gel-permeation chromatography and ion-exchange chromatography. Its physico-chemical properties, including carbohydrate content and molecular weight were determined. The structure of SnS-2 was elucidated by chemical methods along with 1H and 13C NMR spectroscopy, including two-dimensional DQCOSY and H-detected 1H, 13C HMQC experiments. These results show that SnS-2 possesses a backbone con-sisting of terminal a-Galp-(1, a-Galp-(16), a-Glcp-(16) and nonreducing end -Fruf-(2. The bioactive as-say showed that it could inhibit the growth of Lewis pulmonary carcinoma implanted in mice.

施肥对玄参生长及品质的影响

以玄参(Scrophularia ningpoensis Hemsl.)、微生物菌肥、氨基酸硼锌肥为试验材料,对玄参分别施用氨基酸硼锌肥、微生物菌肥,统计分析玄参地上部分、地下部分生长情况,病虫害发生率,药材有效成分含量等指标,研究了不同肥料对玄参生长、产量和质量的影响,以期为科学种植玄参提供参考。结果表明,微生物菌肥、氨基酸硼锌肥对玄参植株、药茎、子芽生长有促进作用,对斑枯病等病害具有抑制作用,微生物菌肥对地下部分生长和病害抑制效果比氨基酸硼锌肥更好,但对地上部分的促进作用不及氨基酸硼锌肥,微生物菌肥、氨基酸硼锌肥对玄参药材中有效成分哈巴苷含量具有明显的提高作用,微生物菌肥、氨基酸硼锌肥处理分别可提升至对照的2.46、2.10倍。综合植株生长、产量、抗病性等因素,可配施微生物菌肥、氨基酸硼锌肥和化肥,达到高产、高抗、高质的目的,生产出道地好药材。