A new isobenzofuranone derivative from a marine Streptomyces sp.

One new isobenzofuranone derivative,1,4-dimethoxy-3-(3R*-hydroxy-3R*-methyl-1-tetralone)-1(3H)-isobenzofuran(1),was isolated from the broth of marine Streptomyces sp.M268.The structure was elucidated by spectroscopy characteristics as well as comparison with the literature.Compound 1 exhibited cytotoxicities against human cancer cell,HL-60,A549,and BEL-7402.     

Aptameric SERS sensor for Hg~(2+) analysis using silver nanoparticles

Aptamer–silver nanoparticles (AgNPs) based surface-enhanced Raman scattering (SERS) sensor has been developed for Hg²⁺ detection by employing the structure-switching aptamer in the presence of spermine. This simple method shows excellent sensitivity and selectivity owing to the sensitive SERS detection technique and high specificity of aptamer for binding Hg²⁺.     

β－环糊精对邻、间、对－氨基苯甲酸毛细管电泳分离的影响及其分析应用

本文研究了β－环糊精及硼砂缓冲液的酸度、浓度，电泳电压对毛细管区带电泳分离ｏ、ｍ、ｐ氨基苯甲酸异构体的影响，建立了ｏ、ｐ－氨基苯甲酸的毛细管区带电泳分离、紫外检测法。