玉米粉中玉米赤霉烯酮含量的测定 （Copure® 玉米赤霉烯酮免疫亲和柱）

文献名： Structural, morphological and optical properties of Bi NPs obtained by laser ablation and their selective detection of L-cysteine 作者： Ramon Gabriel Teixeira Rosaa, Celso de Araujo Duartea , Wido Herwig Schreinera, Ney Pereira Mattoso Filhoa, Arandi Ginane Bezerra Jr.b, Andersson Barisonc, Fernanda Maria Marins Ocamposc a Departamento de Física, Universidade Federal do Paraná Centro Politécnico, CP 19044, 81531-990 Curitiba (PR), Brazil b Departamento Acadêmico de Física, Universidade Tecnológica Federal do Paraná, 80230-901 Curitiba (PR), Brazil c Departamento de Química, Universidade Federal do Paraná Centro Politécnico, CP 19081, 81531-990 Curitiba (PR), Brazil 摘要：In the present work we show the results of the investigation of the properties of bismuth nanoparticles (NPs) obtained by the laser ablation in water. The samples were characterized by various techniques: UV/vis spectroscopy, dynamic light scattering, transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, nuclear magnetic resonance and zeta potential. The NPs were metallic and surface oxidated, exhibiting absorption peak at 257 nm due to the surface plasmon resonance. The interaction between the NPs and various amino acids was studied and revealed a selective sensibility to cysteine on a range of concentration from 80 to 720 μM, which we attribute to a dimerization of cysteine to cystine probably complexed to the nanoparticle surface by electrostatic interactions, leading to the modification of the NP absorption spectrum. 关键词：Bismuth; Nanoparticles; Laser ablation; Cysteine

自然界中约有99%的微生物无法在实验室条件下培养纯化，对于环境或临床样本中的微生物群落研究，需要一种非培养依赖且同时覆盖多种微生物类型的检测技术，能对微生物群落进行种属水平的鉴定及定量分析，使得微生物鉴定更加全面、准确及高效。 华大智造基于自主研发的高通量测序平台和病原感染快速鉴定系统，开发出一套病原微生物检测整体解决方案，可实现在本地快速、准确、全面的对原始标本中的微生物进行分类鉴定，并自动出具分析结果，为感染性疾病的诊疗提供参考。同时，我们也提供多种病原微生物检测整体解决方案的组合，用户可根据需求灵活选择硬件及配套试剂耗材。

肿瘤特异性抗体功能分析包含很多方面： T细胞功能活化及增殖、细胞因子分析、抗体依赖的细胞介导的细胞毒性作用（antibody-dependent cell-mediated cytotoxicity; ADCC）、抗体介导的补体依赖的细胞毒性（complement dependent cytotoxicity; CDC）、巨噬细胞抗体依赖性的细胞吞噬作用（Antibody-Dependent Cellular Phagocytosis; ADCP）等。

矿物油组成中的共轭体系物质在紫外光区有较强的吸收，依据朗博 - 比尔定律，在256nm紫外光波长，可测定油样的吸光度来确定相应油的量。 由于紫外光度法对于油种的敏感性较强，本方法的油样需采用标准物质。