胃动素在大腹皮促动力效应中的变化及其意义

目的：探讨大腹皮的促胃肠动力作用机制。方法：16只Wistar大鼠随机分为大腹皮组及对照组,给大鼠灌服大腹皮水提液1h后,放射免疫分析法测定血浆及胃肠组织匀浆中胃动素（MTL）的含量,免疫组化法观察胃窦及空腹中MTL的分布变化。结果：灌服大腹皮煎液后,大鼠血浆及胃肠组织匀浆中MTL的含量显著升高（P＜0．01或＜0．05）,胃窦及空肠MTL阳性物质的表达明显增加（P＜0．01或＜0．05）。结论：大腹皮的促胃肠动力作用与血浆、胃肠和组织匀浆中MTL水平的增加及胃肠道MTL细胞分布变化有密切关系。     

温胆汤历史沿革研究进展

温胆汤主要组方药材包括半夏、竹茹、枳实、陈皮、甘草和生姜,主治用于胆寒症。由于历史变迁,朝代更迭,历代温胆汤在药材组成、用药剂量与加水量及炮炙方法等方面有所不同。     

影响陈皮色素稳定性的因子研究

目的:为生产各种食用品、化妆品、医药药品等色素新产品提供重要原料,研究陈皮色素的提取条件和稳定性.方法:以水为提取剂,用紫外分析法研究陈皮色素的稳定性.结果:以水为提取剂,料液比为1:80,在室温下浸提24h.结论:色素在330nm处有最大吸收峰,该色素水溶性较好,强碱性物质对该色素稳定性有一定影响,但热稳定性良好.苯甲酸钠、柠檬酸、醋酸、蔗糖、葡萄糖、可溶性淀粉等食品添加剂对陈皮色素稳定性无明显影响.氧化剂、还原剂中除抗坏血酸对色素的影响明显外,其他均无明显影响,金属离子对其影响较小.     

Chemical Constituents from Pericarpium Citri Reticulatae

Objective To study the chemical constituents from Pericarpium Citri Reticulatae(Citrus reticulata). Methods The chemical constituents were isolated and purified by silica gel column, Sephadex LH-20, and ODS column chromatography. The structures were identified by spectral data. Results Nineteen compounds were isolated and identified as 4′,5,6,7-tetramethoxyflavone(1), 3,3′,4′,5,6,7,8-heptmethoxyflavone(2), sinensetin(3), 5-O-demethylnobiletin(4), tangeretin(5), nobiletin(6), apigenin(7), 5-Odesmethyltangeretin(8), 5,7-dihydroxy-3,3′,4′,6-tetramethoxyflavone(9), pachypodol(10), 4′,5,6,7-tetramethoxyflavanone(11), 3′,4′,5,7,8-pentamethoxyflavanone(12), agestricin C(13), scoparone(14), isoscopoletin(15), hesperidin(16), didymin(17), methylhesperidine(18), and naringin(19). Conclusion Compounds 9-15 are obtained from this plant for the first time.