A novel determination method for trace of seven phenol compounds in air samples has been established. They were collected with Tenax adsorption tube (180 mm x 60 mm glass tube packed with 150 mg Tenax (40 - 60 mesh)) and desorbed with methanol. Five microlitres of naphthalene-D8 (internal standard) solution was added to the eluate. One microlitre of the mixture solution was injected into an HP-5MS capillary column (30 m x 0.25 mm x 0.25 microm) and determined by gas chromatography-mass spectrometry with selected ion monitoring (GC-MS/SIM). The selected ions were m/z 94, 95, 66, 108, 107, 77, 90, 122, 121, 107 and 136. The quantitative ions, m/z 94 for phenol, m/z 108 for cresol, m/z 122 for xylenol and m/z 136 for internal standard, were selected. The average recoveries of phenol compounds (spiked at the levels of 0.25, 1.00, 5.00 microg) ranged from 92.4% to 102% and the relative standard deviations were less than 4.8%. When the air sample volume was 10 L, the detection limits were less than 0.001 mg/m3. Good linearities were observed in the range from 0.05 to 20.0 mg/L. The method is simple, fast, sensitive and accurate for the determination of phenol compounds in air samples.
Download full-text PDF |
Source |
---|
BMC Chem
January 2025
Department of Biochemistry, Faculty of Pharmacy, Adıyaman University, Adıyaman, 02000, Türkiye.
This study investigates the phenolic compounds (PC), volatile compounds (VC), and fatty acids (FA) of extra virgin olive oil (EVOO) derived from the Turkish olive variety "Sarı Ulak", along with ADMET, DFT, molecular docking, and gene network analyses of significant molecules identified within the EVOO. Chromatographic methods (GC-FID, HPLC) were employed to characterize FA, PC, and VC profiles, while quality parameters, antioxidant activities (TAC, ABTS, DPPH) were assessed via spectrophotometry. The analysis revealed a complex composition of 40 volatile compounds, with estragole, 7-hydroxyheptene-1, and 3-methoxycinnamaldehyde as the primary components.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, 84084, Italy.
The aim of this study is based on the searching of "new" potential environmentally friendly plant based products with herbicidal activity. The purpose of the study is also to find the source which is easy to harvest in high amount within the local environment. Salvia pratensis L.
View Article and Find Full Text PDFCurr Nutr Rep
January 2025
Institute of Nutrition, Mahidol University, 999 Phutthamonthon 4 Road, Nakhon Pathom, 73170, Salaya, Thailand.
Purpose Of Review: The diverse polyphenolic components present in these berries are responsible for their functional properties in human health. Hence, there is an increasing demand for research in berry bioactive components to understand the mechanism of action in alleviating and preventing diseases. Therefore, in this last part-III of the review series, mulberry, raspberry, salmonberry, Saskatoonberry, and strawberry are discussed in terms of their bioactive components and corresponding substantial health benefits.
View Article and Find Full Text PDFCurr Nutr Rep
January 2025
Institute of Nutrition, Mahidol University, 999 Phutthamonthon 4 Road, Nakhon Pathom, 73170, Salaya, Thailand.
Purpose Of Review: This review delves comprehensively into the nutritional profiles and diverse biological activities of different berries. So far 19 different types of berries have been identified for human consumption and studied for their nutritional and biological activities. Among them, acai berry, blueberry, blackberry, black currant, boysenberry, and bilberry have been summarized in this review (Part I).
View Article and Find Full Text PDFCurr Nutr Rep
January 2025
MMICT & BM (Hotel Management), Maharishi Markandeshwar (Deemed to be University), Mullana, India.
Purpose Of Review: The review aims to address the knowledge gap and promote the widespread adoption of quinoa as a functional food for improving metabolic health. By presenting a comprehensive overview of its nutritional profile and bioactive components, the review aims to increase consumers' awareness of the potential therapeutic benefits of incorporating quinoa into diets.
Recent Findings: Recent studies have highlighted the diverse range of bioactive compounds in quinoa, such as phytosterols, saponins, phenolic acids, phytoecdysteroids, and betalains.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!