UHPLC

Tony Edge, Stephane Moreau, Carsten Paul, and Fraser McLeod discuss the latest trends and developments in LC.

How long should you perform an extraction of woodruff leaves so that you don’t end up with a harmful amount of coumarin, but still get the characteristic flavor of the finished May wine?

As opposed to targeted metabolomics which looks only at a predetermined set of metabolites or their pathways, an untargeted approach was preferred by this research team because of its unbiased yet still comprehensive nature.

The flowmeter, Testa said in a press release, was compared favorably as an alternative to more traditional flow calibration methods for HPLC pumps.

Xinyi Biyan is a Chinese patent medicine with significant therapeutic effects, widely used clinically to treat acute and chronic rhinitis or allergic rhinitis.

Scientists from Changchun University of Chinese Medicine used UHPLC-Q-Orbitrap-MS/MS analysis to identify the active compounds in TongFu XieXia Decoction for treating intestinal obstruction.

Scientists from the Lunan Pharmaceutical Group explored the use of UHPLC-MS/MS to test the effects of Shouhui Tongbian capsules (SHTBs) on slow transit constipation (STC).

This article covers liquid chromatography columns and accessories commercially released after Pittcon 2023 through the 2024 conference.

Here are the top five articles that the editors of LCGC International published this week.

Ultrahigh-pressure liquid chromatography coupled to high-resolution mass spectrometry (UHPLC-HRMS) had been previously proposed for untargeted lipidomics analysis, but this updated approach was reported by the authors to reduce run time to 4 min.

Scientists from Anhui University of Chinese Medicine in Hefei, China recently investigated the mechanisms behind what makes huachansu tablets, a type of traditional Chinese medicine (TCM), effective against liver cancer.

Here are the top five articles that the editors of LCGC International published this week.

Chromatographic and spectroscopic techniques alike were reviewed for their current effectiveness and future potential in this lecture session at Analytica 2024.

This article describes newly introduced high-performance liquid chromatography (HPLC), mass spectrometry (MS), chromatography data systems (CDS), and related products in 2023–2024. It summarizes their technical specifications and significant user benefits.

The 26th Norwegian Symposium on Chromatography was held 21–23 January 2024. The symposium has strong traditions in the Norwegian separation science community, serving as a forum for excellent scientific talks, networking, and social events.

In a recent study out of Boehringer Ingelheim Animal Health USA Inc. in North Brunswick, New Jersey, scientists investigated cloruson and its related substances using an original ion-paired reversed phase ultraperformance liquid chromatography (IP-UHPLC) method.

In a recent study out of Central South University in Changsha, China, scientists tested different cosine similarity algorithms to test for illegal adulterants in drugs.

Here are the top five articles that the editors of LCGC International published this week.

In a recent study, scientists tested how effective dynorphin 1-17 peptides can be in treating chronic rhinosinusitis with nasal polyps (CRSwNP).

A recent study dissects a Chinese herbal medicine to determine why it is effective in treating polycystic ovary syndrome (PCOS).

Scientists from Hangzhou, China used ultra-performance liquid chromatography mass spectrometry and non-targeted metabolomics studies to help find treatments for colorectal cancer.

Alyssa Sanchez of Florida International University presented her research on profiling the decomposition of heroin from South America, Mexico, Southwest and Southeast Asia.

Researchers from Nanjing University of Chinese Medicine leveraged ultrahigh-pressure liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (UHPLC–QTOF-MS) and network pharmacology to identify potential quality markers of three processed Qingpi products and elucidate their mechanism in liver disease treatment.

Researchers employed advanced chromatography and mass spectrometry techniques to unravel the chemical components and metabolites of Lingbao Huxin Dan, pinpointing its therapeutic potential for cardiovascular ailments.

Scientists in Mexico developed a new method for detecting herbicides in agricultural soil, being based on techniques like 9-fluorenylmethyl chloroformate (FMOC-Cl) and ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS).

Researchers from the Chinese Academy of Medical Sciences and Peking Union Medical College categorize the cardioprotective effects and other characteristics of flavonoids from the species commonly known as Chinese rosewood.

This paper proposes a new method of flash qualitative identification (FQI) to qualitatively identify a certain target component from a mixture within half a second by disusing the analytical column, which is a time-consuming unit in current chromatography instruments. First, a Noised Spectrum Identification (NSI) model was constructed for the data set generated directly by diode array detector (DAD) without the process in an analytical column. Then, a method called vector error algorithm (VEA) was proposed to generate an error according to the DAD data set for a mixture and a specific spectrum for the target component to be identified. A criterion based on the error generated by the VEA is used to give a judgement of whether the specific spectrum exists in the DAD data set. Several simulations demonstrate the high performance of the FQI method, and an experiment for three known materials was carried out to validate the effectiveness of this method. The results show that the NSI model concurs with the real experiment result; therefore, the error generated by the VEA was an effective criterion to identify a specific component qualitatively, and the FQI method could finish the identification task within half a second.

The hyphenated method was combined with a gradient ultracentrifugation technique that allowed for lipoprotein fraction separations.

Scientists from Fudan University in Shanghai, China created a system for reducing retention-time variations in metabolomic analysis using ultrahigh-performance liquid-chromatography coupled with mass spectrometry (UPLC-MS).

This month we spoke to Zhuoheng Zhou from the Vrije Universiteit Brussel in Belgium about his research on advancing instrumental and column technologies for modern chromatography and its applications in novel biopharmaceutical modalities and proteomics.