传统藏药材高原香薷的矿质元素分析

对传统藏药材香薷中高原香薷种的17种微量元素进行了分析。结果表明,在高原香薷中人体必需微量元素Cu、Zn、Fe、Mn、Co、Ni、Se等含量较高,尤其以Cu、Fe、Mn元素的含量为高。Na、Ca等宏量元素含量亦较高。     

电感耦合等离子体质谱法测定香薷中无机元素含量的研究

采用电感耦合等离子体质谱（ICP—MS）法对香薷中的Ca、Mg、Cu、Zn、Fe、Mn、Co、Ni、Se等18种无机元素进行了分析测定。该方法的回收率在84．62％～113．16％,具有良好的准确度和精密度,完全可以满足香薷样品中无机元素测定要求。研究结果表明：香薷中Ca和Mg两种必须的常量元素的含量特别高,微量元素Cu、Zn、Fe、Mn、Co、Ni、Se含量丰富。此结果可为探讨香薷中元素含量与其药效相关性提供科学依据。     

石香薷中两个新黄酮甙的研究

石香薷中两个新黄酮甙的研究郑尚珍，孙丽萍，沈序维王毅（西北师范大学化学系，兰州，７３００７０）（中国科学院兰州化学物理研究所）关键词石香薷，唇形科，黄酮甙唇形科植物石香薷（ＭＯｓｌａｃｈｉｎｅｎｓｉｓＭａｘｉｍ）作为中药，用来治疗暑湿感冒、头痛、腹痛...     

云南丽江野生香薷籽微量元素成分分析

应用电感耦合氩等离子体原子发射光谱仪（ICP－AES），对采自云南丽江的野生香薷籽进行了微量元素成分分析，其结果为开发利用野生香薷籽提供了依据。     

4种保健野菜中微量元素的测定

以茵陈、牛繁缕、曲曲菜、猪毛菜为材料,用原子吸收光谱法测定了4种野菜中的Ca、Mg、Cu、Zn、Fe、Mn 6种微量元素的含量。结果表明,4种野菜中含有丰富的人体必需微量元素,6种元素的加标回收率在96.57%～99.06%之间,相对标准偏差RSD值均低于3%,说明本试验测定结果可靠,精密度高。     

射干中微量元素含量测定分析

用原子吸收分光光度法测定了射干中的6种微量元素。结果表明,射干中含有丰富的人体必需的微量元素和微量的有害元素,是一种极具开发和利用价值的中药植物。     

萼果香薷中的五种新化合物

萼果香薷中的五种新化合物沈序维，郑尚珍，尹昨栋，宋占午，王莱（西北师范大学化学系，兰州，７３００７０）（西北师范大学生物系）关键词萼果香薷，唇形科，呋喃黄酮，呋喃香豆素萼果香薷（Ｅｌｓｈｏｆｔｚｉａｄｅｎｓａ）是一种用于消炎和止血的唇形科植物。本文对...     

ICP-MS法测定彭泽贝母中微量元素的含量及形态分析

目的:测定彭泽贝母中微量元素含量,研究彭泽贝母中微量元素的存在形态,探讨微量元素的含量和形态.方法:采用HNO3-H2O2微波消解体系,电感耦合等离子质谱法(ICP-MS)测定彭泽贝母中铅、钙、铁、锰、锌、镉、钡、铬等10种微量元素的含量,初步探究微量元素的存在形态.结果:Ca元素在彭泽贝母中含量最高,而Mo元素含量最低;彭泽贝母中微量元素是以无机态为主、多种形态共存的复杂体系.结论:彭泽贝母中含有丰富的人体必需微量元素,可能促进其有效成分作用的发挥.     

桑叶中微量元素的测定分析

为探讨中药桑叶中微量元素与其药理作用的关系,采用原子吸收分光光度法测定了桑叶中10种元素的含量。结果表明,桑叶中含有丰富的人体必需的微量元素。提示微量元素的存在与桑叶临床治疗和保健作用有一定的相关性,具有较高的开发利用价值。     

微波消解-分光光度法测定土壤中全硼

<正>硼是在岩石、土壤和水中普遍存在的一种元素,是构成地壳的元素之一。土壤中大部分硼存在于土壤矿物(如电气石)的晶体结构中。我国土壤中全硼含量从痕迹至500 mg·kg~(-1),平均约为64 mg·kg~(-1)。硼是植物生长发育必需的微量元素,缺硼或硼过量会导致植物病态生长。硼还是高等动物的必     

Chemical composition,in vitro antioxidant activity and α-glucosidase inhibitory effects of the essential oil and methanolic extract of Elsholtzia densa Benth.

Elsholtzia densa Benth. is a traditional aromatic herb used in the pharmaceutical and flavouring industries. To analyse and compare the chemical composition, the oils and nonvolatile compounds in E. densa and Mosla chinensis Maxim. were extracted via hydrodistillation, solvent extraction or ultrasound-assisted extraction. Seventy-three volatile compounds in the volatile oil (0.35 ± 0.06%) obtained by E. densa via hydrodistillation were investigated by gas chromatography–mass spectrometer and compared based on different parameters. Also, the antioxidant activity and α-glucosidase inhibitory effects of the five sub-fractions of the methanolic extract were studied and the ethyl acetate sub-fraction (EC₅₀ = 7.9 μg/mL) and petroleum ether sub-fraction (EC₅₀ = 0.0955 mg/mL) showed the strongest activity, respectively. This study has provided a scientific basis for scientific collection, effective development, use of E. densa Benth., and suggested that it can be used as a potential source of antioxidants in food and a potential candidate for the management of type 2 diabetes mellitus.     

广藿香总挥发油及微量元素的研究

分析并比较了四种不同产地广藿香中总挥发油及微量元素的含量。     

翼核果微量元素的测定

报道了用原子吸收分光光度法及电感耦合等离子体发射光谱法测定翼核果粉末中二十种元素的含量。     

紫苏叶与白苏叶的总黄酮和微量元素的比较分析

为比较分析紫苏叶与白苏叶的总黄酮和微量元素的含量差异,用可见分光光度法测定了两者总黄酮的含量,用电感耦合等离子体原子发射光谱法(ICP-AES法)测定了两者微量元素的含量。结果表明,测得紫苏叶与白苏叶中总黄酮的含量分别为7.49%和5.69%,两者均含有Cu、Mn、Zn、Fe等多种微量元素,但含量存在一定的差异。白苏作为紫苏的同种植物资源,有待进一步的开发和利用。     

Inflammatory and Cytotoxic Activities of Abietane Terpenoids from Nepeta bracteata Benth.

Nepeta bracteata Benth. is used clinically to treat tracheal inflammation, coughs, asthma, colds, fevers, adverse urination, and other symptoms, along with functions in clearing heat and removing dampness. However, there have been few studies characterizing the material basis of its efficacy. Therefore, the aim of this study was to screen for compounds with anti-inflammatory activities in N. bracteata Benth. Using silica gel, ODS C18, and Sephadex LH-20 column chromatography, as well as semipreparative HPLC, 10 compounds were separated from N. bracteata Benth. extract, including four new diterpenoids (1–4), one amide alkaloid (5), and five known diterpenoids (6–10). The structures of all the isolates were elucidated by HR-ESI-MS, NMR, and CD analyses. Using lipopolysaccharide (LPS)-stimulated RAW 264.7 cells, we investigated the anti-inflammatory activities of compounds 1–10. It is worth noting that all were able to inhibit nitric oxide (NO) production with IC₅₀ values < 50 μM and little effect on RAW 264.7 macrophage viability. Compounds 2 and 4 displayed remarkable inhibition with IC₅₀ values of 19.2 and 18.8 μM, respectively. Meanwhile, screening on HCT-8 cells demonstrated that compounds 2 and 4 also had moderate cytotoxic activities with IC₅₀ values of 36.3 and 41.4 μM, respectively, which is related to their anti-inflammatory effects.     

野生中草药木贼中微量元素的测定

目的测定中草药木贼中微量元素的含量。方法用湿法消化及于法灰化两种方法处理样品并进行了比较,用火焰原子吸收法测定了中草药木贼中7种微量元素的含量。结果测定结果湿法的RSD在0．5％～3．0％,干法的RSD在0．5％-7．5％之间。结论湿法处理金属离子损失小,测量精密度更好。木贼中微量元素的含量由高到低顺序为：Mg,Fe,Mn,Zn,Cu,Ph,Ni。     

青藏高原3种秦艽组植物微量元素比较分析

利用全谱直读等离子体发射光谱法(ICP-AES)测定了3种秦艽组植物10种微量元素(Cu,Zn,Fe,Mn,Ni,Co,Sn,V,Al,Ti)的含量,并进行了比较分析。结果表明,所测定元素在3个不同物种内的含量排列顺序基本一致,显示了三者在元素富集方面的相似性。就同一种元素在3个物种内的富集水平而言,以麻花艽根部具有较高含量的元素Cu,Zn,Co,Al和Ti,管花秦艽根部则大量富集了其余5种微量元素,达乌里秦艽对元素的吸收积累能力居中,揭示了不同物种对同一元素富集能力的差异。该研究可为秦艽类植物资源的深入开发利用提供参考。     

Chemical diversity and anti-acne inducing bacterial potentials of essential oils from selected Elsholtzia species

Essential oils from the aerial parts of four Elsholtzia species; Elsholtzia stachyodes, Elsholtzia communis, Elsholtzia griffithii and Elsholtzia beddomei were obtained by steam distillation and their chemical components were analysed by gas chromatography-mass spectrometry (GC-MS). Principle Component Analysis was used to identify the chemical variations in the essential oils from these plants, which could be categorised into two groups according to their main chemical components which are acylfuran derivatives and oxygenated monoterpenes. Additionally, the anti-acne inducing bacterial activity against Staphylococcus aureus and Staphylococcus epidermidis were evaluated. The oil from E. stachyodes was the most efficacious against the growth of S. aureus and S. epidermidis having MIC values of 0.78 and 1.56 μL/mL, respectively, and exhibited five times more effective than erythromycin (standard antibiotic).