Phthalate esters are endocrine disrupters or mutagens. They are widely used as plasticizers and can be usually found in environmental samples, such as food, soil and polluted air. However, it is difficult to directly determine phthalate esters owing to their relatively low concentration and complex matrices. Therefore, preconcentration and separation have become increasingly important. In recen...

A non-invasive method to characterize human mesenchymal stromal cells during adipogenic differentiation was developed for the first time. Seven fatty acid methyl esters (FAMEs), including methyl laurate, methyl myristate, methyl palmitate, methyl linoleate, methyl oleate, methyl elaidate and methyl stearate, were used for characterizing adipogenic differentiation using headspace solid-phase mic...

In this research, a Dispersive Liquid-Liquid MicroExtraction (DLLME) method coupled to UV-vis spectrophotometry was developed for the indirect determination of silver ion. The method is based on the catalytic effect of the silver ion on the oxidation of congo red by potassium peroxodisulphate and extraction with DLLME procedure using chloroform (extraction solvent) containing cetyltrimethyl...

Natural cork remains a favored option for sealing high-quality wine bottles, despite its high cost wineries. The industry faces the challenge of certifying quality and traceability these corks, with physical–chemical characterization being valuable tool in establishing parameters. While taint compounds must be absent or low concentrations, volatile fraction contains numerous that, even small am...

Colletotrichum gloeosporioides is the most prevalent phytopathogen, causing anthracnose disease that severely affects production of various fruit trees, including walnut and jujube. In this study, volatile organic compounds (VOCs) from Bacillus velezensis CE 100 disrupted cell membrane integrity C. reduced spore germination by 36.4% mycelial growth 20.0% at a bacterial broth concentration 10%, ...

Ginger (Zingiber officinale Roscoe) rhizomes are mostly used as spice and medicine due to their high aroma intensity medicinal bioactive compounds. However, the volatile compounds of ginger, partly responsible for its properties, can be affected by pretreatment, drying method, extraction processes employed. The objective this study was assess effects pretreatment on yellow ginger variety at nin...

In the present work, a novel infrared-assisted extraction coupled to headspace solid-phase microextraction (IRAE-HS-SPME) followed by gas chromatography-mass spectrometry (GC-MS) was developed for rapid determination of the volatile components in green tea. The extraction parameters such as fiber type, sample amount, infrared power, extraction time, and infrared lamp distance were optimized by ...

The present study aimed to evaluate the volatiles profile of red mombin (Spondias purpurea) pulp and its powder produced by spray-drying (SD) as an example to show utility of headspace solid-phase microextraction (HS-SPME) in the analysis of parameters such as the quality and stability of fruit products. Volatiles profiles of the pulp were identified by gas chromatography-mass spectrometry (GC-...

Liqueur d’expedition (dosage) is a final sugar addition made to sparkling wine which determines the sweetness and balance of finished product. In present study, influence dosage composition on Maillard reaction-associated products precursors in traditional method (bottle-fermented) wines was evaluated over 18-months storage climate-controlled cellar conditions (14 °C, 70 % relative humidity). E...

A new method for extraction and analysis of ethanol and methanol in human whole blood, urine and saliva samples based on headspace solid phase microextraction (SPME) using silver sulfide (Ag(2)S) and polyvinyl chloride (PVC) coated on silver wire is described. Unlike commercial fibers, which are coated on fused silica, the proposed fiber has a metallic base to which the coating adheres very str...