中药材和饮片中含量测定检测

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北京康林:高效液相色谱法测定复方百部止咳冲剂中的黄芩苷含量

高效液相色谱法测定复方百部止咳冲剂中的黄芩苷含量 高效液相色谱法测定复方百部止咳冲剂中的黄芩苷含量 高效液相色谱法测定复方百部止咳冲剂中的黄芩苷含量 摘要:目的建立用高效液相色谱法测定复方百部止咳冲剂中黄芩苷含量的方法。方法色谱柱为Shim-Pack VP-ODS;流动为甲醇水乙腈(47∶53∶0.5);流速1.0 ml/min;检测波长278 nm;柱温(40.0±2)℃。结果黄芩苷进样量在0.25~1.25 μg范围内有良好的线性关系,回归方程为Y=3.262×106X+1.956×105,r=0.999 8(n=5),平均回收率为99.42%,RSD=0.7%(n=5)。结论该检测方法简便准确,可用于复方百部止咳冲剂的质量控制。   关键词:复方百部止咳冲剂; 黄芩苷; 高效液相色谱法 北京康林科技有限责任公司成立于1995年, 是一家以经营进口色谱、质谱仪器及其耗材、实验室仪器、化学及生化试剂和标样为主的高科技企业。在广大用户的支持下,公司经过十年的稳步发展,已经成为国内色谱、质谱、样品前处理和生化产品的主要供应商之一,在业内享有极佳的信誉。 康林公司是美国Sigma-Aldrich集团(Supelco、Sigma、Aldrich、Fluka、RDH)、瑞士Hamilton、日本Tosoh、美国Waters、瑞典 Kromasil、英国 ChromTech 、 美国Corning 、美国 Gast、美国Organomation等世界著名公司及众多专业公司授权的中国一级代理。并经销Agilent、 Shimadzu、 Branson、Tedia、Hypersil、Daicel、Rheodyne、Gelman和Ika等世界著名公司的产品。此外,康林公司还拥有自行开发的产品,已经在市场上树立了优良的品牌形象。为广大用户提供质优价廉的国内外知名产品是我们的目标,公司长期与世界各国的著名生产厂家保持着良好的合作关系;将继续寻求新的国际、国内供应商,并且不断研发新产品,为广大用户提供范围更加广泛、质量更为优良的分析化学、生命科学及临床医学等领域的尖端产品。我们销售的产品都有可靠的质量保证,已通过ISO9001、ISO13485等国际权威机构质量体系认证。
检测样品: 中药材和饮片
检测项: 含量测定

北京康林科技有限责任公司

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中药中限度检查检测方案

In the medicinal herb market, adulteration of ginseng at different ages is commonly observed, which harms the health of consumers. Changes in the taste properties of ginseng at different ages were investigated using an intelligent taste-sensing system with artificial lipid-based membrane sensors and an ultraviolet spectrophotometer. It was found that the ginsenoside content increased linearly with increasing age, with the determination coefficient (R2) reaching 0.951. Results from the taste-sensing system provided rich information for the tested ginseng samples. The radar curve of taste value indicated that ginseng samples of different ages showed various taste characteristics and some certain tendencies. A linear correlation was established between ginseng age and the taste values of sourness, saltiness, and umami, with the determination coefficients (R2) being 0.941, 0.943, and 0.974 respectively. Taste data were analyzed using principal component analysis (PCA) and discriminant function analysis (DFA). A difference was obtained among groups with the first two PCs reaching 92.25%. While in DFA a significant difference was observed with the first two function scores reaching 99.4%. From the viewpoint of sensor response, the responses of the umami sensor AAE, saltiness sensor CTO, and sourness sensor CAO increased over the first 30 s, while those of the bitterness sensor COO and astringency sensor AE1 decreased and remained at maximum in the negative value continuously, which provided additional information for the determination of ginseng samples at different ages. On the basis of integrated and special taste information, the ginseng growing year might be identified from the taste evaluation angles. A flow chart for further research on the taste features was suggested. This study intimated possible indexes for determining adulteration of ginseng at different ages by using an intelligent taste-sensing system.
检测样品: 中药材和饮片
检测项: 含量测定

北京盈盛恒泰科技有限责任公司

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仪器信息网行业应用栏目为您提供59篇中药材和饮片检测方案,可分别用于微生物相关检测、含量测定检测、鉴别检测、限度检查检测、前处理检测、理化性质检测、特殊物质和基团检测、注射剂及特殊剂型相关检测、微生物相关及生化特性检测、放射性及其他检定检测、特征图谱检测、禁限用物质检测,参考标准主要有等