Dispersive Liquid-Liquid Microextraction of Rose Water Components
A research group from the University of Tehran (Tehran, Iran) used dispersive liquid?liquid microextraction coupled with gas chromatography to determine compounds in rose water, which is the hydrosol portion of the distillate of rose petals.
A research group from the University of Tehran (Tehran, Iran) used dispersive liquid–liquid microextraction coupled with gas chromatography to determine compounds in rose water, which is the hydrosol portion of the distillate of rose petals. Rose water is used for food flavoring, as a component in cosmetic and medical preparations, and for religious purposes in Europe and Asia. Various extraction parameters were tested, including volume of extraction and disperser solvents, temperature, and salt effect. They found that the best results were obtained using a volume of 37.0 µL for the extractor solvent, 0.42 mL for the disperser solvent, and a temperature of 48 °C. The components extracted included benzeneethanol, geraniol, beta-citronellol, nerol, eugenol, and linalool.
Study Explores Thin-Film Extraction of Biogenic Amines via HPLC-MS/MS
March 27th 2025Scientists from Tabriz University and the University of Tabriz explored cellulose acetate-UiO-66-COOH as an affordable coating sorbent for thin film extraction of biogenic amines from cheese and alcohol-free beverages using HPLC-MS/MS.
Multi-Step Preparative LC–MS Workflow for Peptide Purification
March 21st 2025This article introduces a multi-step preparative purification workflow for synthetic peptides using liquid chromatography–mass spectrometry (LC–MS). The process involves optimizing separation conditions, scaling-up, fractionating, and confirming purity and recovery, using a single LC–MS system. High purity and recovery rates for synthetic peptides such as parathormone (PTH) are achieved. The method allows efficient purification and accurate confirmation of peptide synthesis and is suitable for handling complex preparative purification tasks.
