May 14th 2024
Scientists from the Shenyang Pharmaceutical University in China have developed a new quality assessment system for various types of traditional Chinese medicine (TCM).
Enhancing Peptide Mapping Sequence Coverage Through an Automated Dual Protease Digest
August 1st 2023Trypsin is one of the most commonly used proteases in peptide mapping protocols because of its high level of specificity. However, trypsin alone is not always sufficient for full sequence coverage. In this article, the authors detail how trypsin was combined with chymotrypsin to overcome this, and the benefits of an automated platform.
A Modern Mineral Oil Hydrocarbon Analysis
August 1st 2023Giorgia Purcaro of the University of Liège discusses the advantages offered by the liquid chromatography–comprehensive multidimensional gas chromatography time-of-flight mass spectrometer/flame ionization detector (LC–GCxGC–TOF-MS/FID) method in the analysis of mineral oil.
Polysorbate Analysis in Biopharmaceutical Applications—A Snapshot of the Analytical Toolbox
An overview of different approaches for the qualitative and quantitative analysis of polysorbates.
CIL-UHPLC–HRMS Profiles Carbonyl Compounds in Baijiu Daqu Samples
July 27th 2023Sauce-flavor or sauce-aroma baijiu, one variant of a popular Chinese liquor, is treated with a fermentation starter called daqu, giving the concoction a unique taste profile, and scientists want more information about how it can inform the manufacturing of higher-quality baijiu.
New Method Enables Online Measurement of Tetraethyllead in Aqueous Samples
July 14th 2023A research team has developed a new method for the online measurement of tetraethyllead (TEL) in aqueous samples. The approach utilizes magnetism-enhanced in-tube solid phase microextraction (ME/IT-SPME) coupled with high performance liquid chromatography (HPLC) and diode array detection (DAD).
LC×LC With UV Detection and 3D Contour Plot Differentiates Ginseng in Two Types of Chinese Medicine
July 13th 2023Authentication of popular ginseng-based products has been difficult and has caused confusion in quality control between traditional Chinese medicine (TCM) and Chinese patent medicine (CPM).