A method that overcomes the difficulties of the 240-nm benzoylcholine method for phenotyping plasma cholinesterases has been developed. After a timed reaction, under the same reaction conditions as in the classic procedure, choline is detected at 500 nm by use of choline oxidase coupled with the peroxidase/phenol/aminoantipyrine system. Cholinesterase activity measurements, calibrated by use of...

Fakfak nutmeg seeds contain 6% of essential oil and 11-34% fat. Trimyristin contained in reaches 80%. The fat content the can be used as an ingredient for making soap, perfume other industrial materials. Tools made stainless steel to distill seeds. Reflux system using ester which will then purified acetone tested again with gas chromatography isolate purify oil. Extraction anthocyanin pigments ...

Bitter leaf, Vernonia amygdalina (VA), is used in various alternative medicine several countries, including Indonesia. This study aims to evaluate the antioxidant activity of VA leaves by three different vitro methods. The was evaluated radical scavenging 1,1-diphenyl-2- picryl-hydrazyl (DPPH), ferric reducing power (FRAP), and cupric capacity (CUPRAC). FRAP CUPRAC methods were expressed as mg ...

Stable water soluble surfactant coated CdSe nanocrystals with trioctylphosphine (TOP) were obtained by a process of dynamic surface coating with cationic, anionic, and non-ionic surfactants. The surfactant-coated CdSe/TOP nanocrystals were characterized by complementary techniques of UV-VIS and photo-luminescence spectrophotometry, as well as by means of a capillary zone electrophoretic techniq...

Gold nanoparticles' novel properties are widely realized in catalysis, plasmonics, electronics, and biomedical applications. For biomedical application, one challenge is to find a non-toxic chemical and/or physical method of functionalizing gold nanoparticles with biomolecular compounds that can promote efficient binding, clearance, and biocompatibility and to assess their safety to other biolo...

Background and objectives: The importance of Cassia angustifulia is due to its laxative properties. A large number of sennosides have been reported in senna but sennoside A and B have been reported as the main causes of its properties. The present study includes the analysis of the effective ingredients of sennosides containing senna products in Iranian pharmaceutical ...

A novel, simple, accurate, sensitive, reproducible, economical spectroscopic method was developed and validated for the determination of Azithromycin dihydrate and Cefixime trihydrate in combined dosage form. Second order derivative spectroscopy method is adopted to eliminate spectral interference. The method obeys Beer’s Law in concentration ranges of 10-40 ppm for Cefixime trihydrate and 25-1...