Results 81 to 90 of about 10,894,647 (232)

Uso de um novo método de agitação para micro-extração em fase sólida - SPME - na determinação de fenóis em água [PDF]

, 2002
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Químca.Neste trabalho foi comparada a eficiência de três formas de agitação para a extração via SPME de um grupo de 11
Nome, Renata Cristiano
core  

Metal applications of liquid-phase microextraction [PDF]

, 2019
This review focuses on the combination of elemental detection techniques with liquid-phase microextraction (LPME), namely, single drop microextraction, hollow fiber based liquid-phase microextraction, dispersive liquid-liquid microextraction, and related
Canals, Antonio, Baile, Paola, Aguirre Pastor, Miguel Ángel, Vidal, Lorena   +3 more
core   +1 more source

Evolution‐Inspired Engineering of Diterpene Biosynthesis via Chloroplast Genome Modification

Plant Biotechnology Journal, EarlyView.
ABSTRACT Terpenes constitute the largest and most structurally diverse class of plant secondary metabolites, with critical roles in plant‐environment interactions and broad industrial applications. Although nuclear genome engineering of terpene pathways has been extensively explored, chloroplast genome engineering remains largely undeveloped, with all ...
Alessandro Occhialini, Xinlu Chen, Samantha A. Miller, Mohammad Majdi, Ivette A. Fuentes Quispe, Gabriella King, Feng Chen   +6 more
wiley   +1 more source

Non-destructive evaluation of historical paper based on pH estimation from VOC emissions [PDF]

, 2007
Volatile organic compounds (VOCs) emitted from materials during degradation can be a valuable source of information. In this work, the emissions of furfural and acetic acid from cellulose were studied using solid-phase micro-extraction (SPME) in ...
Kolar, J., Cigić, I.K., Matija StrliÄÂ, de Bruin, G., Irena Kralj Cigić, Irena Kralj Cigić, Irena Cigić, Gerrit de Bruin, Pihlar, B., Jana Kolar, Boris Pihlar, Strlič, M., Matija Strlič   +12 more
core   +1 more source

Volatile Organic Compounds Emitted by Fungi Have Substantial Effects on Growth and Disease Resistance in Arabidopsis thaliana

Plant, Cell &Environment, EarlyView.
ABSTRACT Volatile organic compounds (VOCs) emitted by certain fungi have previously been suggested to modulate plant development and their response to stresses. While some fungal species, such as Trichoderma harzianum, are known to produce VOCs, the production of VOCs in other phylogenetically divergent species, such as Mucor mucedo, was previously ...
Sara Yugueros, Asier Largo‐Gosens, Cristina Úbeda, Cristina Hernández‐Fernández, Alba Manga‐Robles, Diego Rebaque, Antonio Encina, Hugo Mélida   +7 more
wiley   +1 more source

Solid Phase Microextraction and Related Techniques for Drugs in Biological Samples

Journal of Analytical Methods in Chemistry, 2014
In drug discovery and development, the quantification of drugs in biological samples is an important task for the determination of the physiological performance of the investigated drugs.
Mohammad Mahdi Moein, Rana Said, Fatma Bassyouni, Mohamed Abdel-Rehim   +3 more
doaj   +1 more source

Optimized SPE‐HPLC‐FLD Method for the Simultaneous Determination of Olaparib, Propranolol, and Furosemide in Human Urine

Biomedical Chromatography, Volume 40, Issue 8, August 2026.
ABSTRACT Olaparib belongs to the PARP inhibitors and is widely used as an anticancer drug. Due to frequent side effects, it is usually co‐administered with an antihypertensive, such as propranolol and/or an antidiuretic, such as furosemide. In this study, a highly sensitive HPLC‐FLD method was developed for the simultaneous determination of the three ...
Georgios Kamaris, Antonia Kalagia, Catherine K. Markopoulou   +2 more
wiley   +1 more source

Identification of Volatile Odor Compounds in Extracts of Four Types of Herbaceous Plant Spices via GC × GC–O‐TOF MS

eFood, Volume 7, Issue 4, August 2026.
In this study, sensory evaluation, electronic nose, solid‐phase microextraction, and comprehensive two‐dimensional gas chromatography‐olfactometry‐time‐of‐flight mass spectrometry were used to analyze the volatile compounds and key odor‐active components in the extracts of sour horn, alfalfa, chicory, and fenugreek, and a total of 59 odor‐active ...
Suxing Tuo, Qinghui Jia, Shuang Bi, Yixin Dai, Ting Deng, Hongbing Lu, Jiaxiao Cai, Zifeng Li, Cheng Yang, Kejun Zhong, Bo Kong, Ye Liu   +11 more
wiley   +1 more source

Recent Advances in the Extraction of Polycyclic Aromatic Hydrocarbons from Environmental Samples

Molecules, 2020
Polycyclic aromatic hydrocarbons (PAHs) comprise a group of chemical compounds consisting of two or more fused benzene rings. PAHs exhibit hydrophobicity and low water solubility, while some of their members are toxic substances resistant to degradation.
Natalia Manousi, George A. Zachariadis
doaj   +1 more source

Influence of Fermentation and Curing on Residual Nitrite, Physico‐Chemical, Volatile, Sensory, and Microbiological Properties of Sucuk Döner Kebab During Refrigerated and Frozen Storage

Food Science &Nutrition, Volume 14, Issue 8, August 2026.
The effects of fermentation with and without nitrite on the physicochemical properties, lipid oxidation, volatile compounds, sensory characteristics, and overall quality of ready‐to‐eat sucuk döner kebabs were evaluated, demonstrating that fermentation, particularly without nitrite, improved oxidative stability and sensory quality. ABSTRACT The present
Ayşe Sinan, Birol Kılıç, Azim Şimşek, Melis Yıldız   +3 more
wiley   +1 more source