Results 31 to 40 of about 27,884 (228)

Recent progress in solid- and liquid-phase microextraction methods for the extraction and quantification of current-use pesticides

Advances in Sample Preparation
The widespread use of pesticides has led to their pervasive presence in diverse environmental matrices such as water, air, and soil. Therefore, accurate and reliable determination of pesticides in various sample types is essential.
Seyedeh Bentolhoda Hosseinian, Milad Ghani, Jahan Bakhsh Raoof   +2 more
doaj   +1 more source

Headspace solid-phase microextraction: Fundamentals and recent advances

Advances in Sample Preparation, 2022
Solid-phase microextraction (SPME) has become a powerful sample preparation technique which allows to efficiently isolate and enrich analytes from complex matrixes.
Carlina Lancioni, Cecilia Castells, Roberto Candal, Marcos Tascon   +3 more
doaj   +1 more source

Impact of Intermediate Wheatgrass as an Adjunct Ingredient on the Chemical Composition and Development of Aroma Compounds in Sake Brewing

Cereal Chemistry, EarlyView.
ABSTRACT Background Replacing a portion of polished rice with intermediate wheatgrass (IWG) could diversify raw materials for sake, but its effects on composition and fermentation outcomes are not well characterized. The objective of this study was to quantify how adjunct form (whole vs.
Takehiro Murai, Curtis Payne, George Amponsah Annor   +2 more
wiley   +1 more source

Soaking Water Management Strategies for Enhanced Quality of Parboiled Rice

Cereal Chemistry, EarlyView.
ABSTRACT Background and Objectives Parboiling is a hydrothermal process that alters rice physicochemical and nutritional properties. The soaking step is crucial, influencing off‐flavor formation, mineral retention, and effluent quality. This study evaluated five soaking water (SW) management strategies combining different frequencies and volumes of SW ...
Eliane Lemke Figueiredo, Paulo Alberto Azevedo, Nataniele Barros Schaun, Ya‐Jane Wang, Rosana Colussi, Nathan Levien Vanier, Moacir Cardoso Elias   +6 more
wiley   +1 more source

Comparative Study of Free and Total Fatty Acids of Spreadable Cheeses by Mass Spectrometry Methods

ChemFoodChem, EarlyView.
This study focuses on the determination of FFAs in spreadable cheeses and alternatives using a fast Liquid Chromatography‐High Resolution Mass Spectrometry method. A Gas Chromatography‐Mass Spectrometry method was used to determine the composition (%) of total FAs in the same samples.
Christiana Mantzourani, Georgia Koutsouridou, Eleftheria H. Kaparakou, Dimitra Daferera, Petros A. Tarantilis, Golfo Moatsou, Maroula G. Kokotou   +6 more
wiley   +1 more source

Otimização e aplicação da microextração em fase sólida com e sem refrigeração interna em amostras de ervas medicinais e água de rio [PDF]

, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Quimica, Florianópolis, 2013A microextração em fase sólida no modo de extração headspace (HS-SPME) e a microextração ...
Merib, Josias de Oliveira
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Microextraction and Eco-Friendly Techniques Applied to Solid Matrices Followed by Chromatographic Analysis

Separations
In this review, a 5-year overview on environmentally friendly approaches for the extraction of the most relevant organic pollutants in soil, sediment, particulate matter, and sewage sludge coupled with chromatographic analysis is reported.
Attilio Naccarato, Rosangela Elliani, Antonio Tagarelli   +2 more
doaj   +1 more source

Application of solid-phase microextraction in atomic spectrometry

Advances in Sample Preparation, 2022
With the growing requirements for the monitoring of heavy metals at an ultra-trace level in the environment and the real-time detection of toxic elements and their compounds for environmental pollution accidents, researchers devoted significant efforts ...
Yubin Su, Tian Ren, Yao Lin, Chengbin Zheng   +3 more
doaj   +1 more source

Cyclodextrins as Chiral Selectors in Capillary Electrophoresis—Recent Developments in Understanding Analyte Complexation and Applications in Pharmaceutical Analysis

ELECTROPHORESIS, EarlyView.
Cyclodextrins are the most often applied chiral selectors in CE enantioseparations. In combination with NMR spectroscopy and molecular modeling, studies for an understanding of chiral recognition underlying enantioseparations have been performed.
Gerhard K. E. Scriba
wiley   +1 more source

Novas estratégias de otimização para a técnica de SPME e SPME com recobrimento internamente refrigerado [PDF]

, 2012
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2011Esta Tese apresenta três novas estratégias de otimização, sendo duas aplicadas à técnica de ...
Martendal, Edmar
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