Results 51 to 60 of about 3,306 (172)

Recent Advances in the Use of Natural Deep Eutectic Solvents for Natural Product Sample Preparation: Focus on Purification, Characterization, and Sustainability

Journal of Separation Science, Volume 49, Issue 7, July 2026.
ABSTRACT This review examines recent advances in the use of natural deep eutectic solvents (NaDES) for natural product sample preparation, with emphasis on extraction, purification, analytical compatibility, and sustainability. NaDES emerge as versatile, tunable, and biocompatible media that enhance the recovery and stability of diverse phytochemicals ...
Valeria Cedeño‐Fierro, Juan Felipe Grisales‐Mejía, Harlen Gerardo Torres Castañeda, Jose A. Mendiola   +3 more
wiley   +1 more source

Gas-chromatographic detection of phthalic acid esters.

Environmental Health Perspectives, 1973
Each second, the rivers of the world add 109 kg of fresh water to the oceans, and with this water comes tremendous quantities of salts, clay minerals, and other suspended solids. Although the Amazon River makes the largest contribution of fresh water to the sea, its waters are relatively uncontaminated.
openaire   +2 more sources

Secondary Metabolites of Calonectria hemileiae Inhibit Hemileia vastatrix Urediniospore Germination: Evidence for Chemical Mediation in a Mycoparasitic Interaction

Plant Pathology, Volume 75, Issue 4, July‐August 2026.
Calonectria hemileiae, an antagonist of the coffee leaf rust pathogen Hemileia vastatrix, produces low‐molecular weight secondary metabolites that inhibit urediniospore germination. These metabolites likely mediate interfungal interactions and show potential for the development of biofungicides against coffee leaf rust.
Gustavo Silva França de Souza, Bruno Wesley Ferreira, Cristiane Aparecida Franco, Matheus Sarmento Mendonça, Jodieh Oliveira Santana Varejão, Laura Maritza Saavedra Tobar, Robert Weingart Barreto, Eduardo Vinícius Vieira Varejão   +7 more
wiley   +1 more source

Update of the risk assessment on emerging and novel brominated flame retardants in food

EFSA Journal, Volume 24, Issue 7, July 2026.
Abstract The European Commission asked EFSA to update its 2012 risk assessment on Emerging and Novel brominated flame retardants (BFRs) in food. Since the previous Opinion, further information was collected for a total of 27 BFRs. The CONTAM Panel concluded that TDBPP, DBPNG and TBNPA are considered genotoxic and carcinogenic.
EFSA Panel on Contaminants in the Food Chain (CONTAM), Helle Katrine Knutsen, Agneta Åkesson, Vasileios Bampidis, Margherita Bignami, Laurent Bodin, James Kevin Chipman, Gisela Degen, Antonio Hernández‐Jerez, Tim Hofer, Christer Hogstrand, Stefano Landi, Jean‐Charles Leblanc, Kyriaki Machera, Evangelia Ntzani, Isabelle P. Oswald, Guido Rychen, Salomon Sand, Katharina Vejdovszky, Barbara Viviani, Emilio Benfenati, Diane Benford, Andy Hart, Martin Rose, Henri Schroeder, Christiane Vleminckx, Martine Vrijheid, Edoardo Carnesecchi, Violetta Costanzo, Andrea Gissi, Eirini Kouloura, Luisa Ramos Bordajandi, Francesca Riolo, Christer Hogstrand   +33 more
wiley   +1 more source

Occurrence, Detection Technologies, and Regulations of Phthalic Acid Esters at Atmospheric and Aquatic Environments [PDF]

대한환경공학회지
Phthalic acid esters or phthalates are widely used as plasticizers in various industrial plastic products. Among various phthalates, Dibutyl phthalate(DBP) and Di-(2-ehtylhexyl) phthalate(DEHP) are the most frequently used phthalates.
Eunsol Heo, Ji Yi Lee, Minjung Park, Ahjeong Son   +3 more
doaj   +1 more source

Modification of the existing maximum residue levels for acequinocyl in celeries, Florence fennel and rhubarb

EFSA Journal, Volume 24, Issue 7, July 2026.
Abstract In accordance with Article 6 of Regulation (EC) No 396/2005, the applicant Agro‐Kanesho submitted a request to the competent national authority in Germany to modify the existing maximum residue levels (MRLs) for the active substance acequinocyl in celeries, Florence fennels and rhubarbs.
European Food Safety Authority (EFSA), Giulia Bellisai, Giovanni Bernasconi, Irene Castellan, Monica del Aguila, Lucien Ferreira, Renata Leuschner, Andrea Mioč, Marta Szot, Manuela Tiramani, Alessia Verani   +10 more
wiley   +1 more source

o‐Terphenyl‐Based Family of Conjugated Macrocycles: Selective Recognition of Phenylalanine in Water and Interaction With Insulin

Angewandte Chemie International Edition, Volume 65, Issue 24, 8 June 2026.
This study presents the synthesis and binding properties of a new family of o‐terphenyl‐based macrocycles, TP[n] (n = 2‐8). The trimer variant efficiently binds phenylalanine in water with a 10‐fold selectivity compared to other amino acids and aromatic neurotransmitters.
Swapnil Ghule, Sayan Sarkar, Maria Eugenia Pérez‐Ojeda Rodriguez, Mark Spector, Frank Hampel, Evgeny A. Kataev   +5 more
wiley   +1 more source

Occurrence of specific pollutants in a mixture of sewage and rainwater from an urbanized area

Scientific Reports
Urban runoff appears to be a pathway for transferring new emerging pollutants from land-based sources to the aquatic environment. This paper aimed to identify and describe the groups of pollutants present in rainwater surface runoff as well as their ...
Magdalena Gajewska, Karolina Fitobór, Wojciech Artichowicz, Rafał Ulańczyk, Małgorzata Kida, Katarzyna Kołecka   +5 more
doaj   +1 more source

Hofmann Degradation of Asparagine and Glutamine as an Efficient Approach for the Synthesis of Derivatized Lysine Homologs

European Journal of Organic Chemistry, Volume 29, Issue 21, 4 June 2026.
A practical and scalable route to C1 and C2 lysine homologs has been developed using Hofmann degradation of N‐protected L‐asparagine and L‐glutamine as the key step. These short‐tether scaffolds enable efficient synthesis of diverse Fmoc‐protected noncanonical amino acids (ncAAs) bearing donor, acceptor, redox‐active, and fluorescent residues.
Adelaide R. Mashweu, François J. De Beer, Jolien Bertouille, Steven Ballet, Charlotte Martin, Ulrich Hennecke, Charlene Marais, Vladimir A. Azov   +7 more
wiley   +1 more source

Experimental and Theoretical Evidence on the Amoebicidal Activity of Synthesized tRNA-Palmitic Acid Esters [PDF]

Iranian Journal of Chemistry & Chemical Engineering
Synthesis of tRNA-palmitic acid esters was carried out in dimethyl sulfoxide (DMSO) and tert-butanol, %20 and %80 (v/v), respectively, for 24h at 55oC.
Aysun Aksu, Muhammed Safa Çelik, Zübeyde Akın Polat, Ali Fazıl Yenidünya, serap Çetinkaya, Burak Tüzün   +5 more
doaj   +1 more source