Results 1 to 10 of about 3,121,988 (387)

OpenChemIE: An Information Extraction Toolkit For Chemistry Literature [PDF]

arXiv
Information extraction from chemistry literature is vital for constructing up-to-date reaction databases for data-driven chemistry. Complete extraction requires combining information across text, tables, and figures, whereas prior work has mainly investigated extracting reactions from single modalities.
Barzilay, Regina, Coley, Connor W., Fan, Vincent, Qian, Yujie, Wang, Alex, Wang, Amber   +5 more
arxiv   +5 more sources

1-Deoxynojirimycin: Occurrence, Extraction, Chemistry, Oral Pharmacokinetics, Biological Activities and In Silico Target Fishing. [PDF]

Molecules, 2016
1-Deoxynojirimycin (DNJ, C6H13NO4, 163.17 g/mol), an alkaloid azasugar or iminosugar, is a biologically active natural compound that exists in mulberry leaves and Commelina communis (dayflower) as well as from several bacterial strains such as Bacillus ...
Gao K, Zheng C, Wang T, Zhao H, Wang J, Wang Z, Zhai X, Jia Z, Chen J, Zhou Y, Wang W.   +10 more
europepmc   +2 more sources

Natural Deep Eutectic Solvents (NADESs) Combined with Sustainable Extraction Techniques: A Review of the Green Chemistry Approach in Food Analysis [PDF]

Foods, 2022
Usual extraction processes for analyzing foods, supplements, and nutraceutical products involve massive amounts of organic solvents contributing to a negative impact on the environment and human health.
Ciro Cannavacciuolo, Stefania Pagliari, Jessica Frigerio, Chiara Maria Giustra, Massimo Labra, Luca Campone   +5 more
openalex   +2 more sources

AMINES AS EXTRACTANTS--SURVEY OF THE DESCRIPTIVE AND FUNDAMENTAL EXTRACTION CHEMISTRY [PDF]

, 1963
Both the study and the use of extractions with highmolecular-weight amines (including quaternary ammoniums) in organic solution are increasing extensively. While equilibria have been measured in the extraction of an increasing range of acids and Aetal ions, a difficulty remains unresolved in that the amine concentration powerdependence of extraction ...
C.F. Coleman
openalex   +5 more sources

The Chemistry of Curcumin: From Extraction to Therapeutic Agent [PDF]

Molecules, 2014
Curcumin, a pigment from turmeric, is one of the very few promising natural products that has been extensively investigated by researchers from both the biological and chemical point of view.
K. Priyadarsini
semanticscholar   +5 more sources

EnzChemRED, a rich enzyme chemistry relation extraction dataset

Scientific Data
Expert curation is essential to capture knowledge of enzyme functions from the scientific literature in FAIR open knowledgebases but cannot keep pace with the rate of new discoveries and new publications.
Po-Ting Lai, Elisabeth Coudert, Lucila Aimo, Kristian Axelsen, Lionel Breuza, Edouard de Castro, Marc Feuermann, Anne Morgat, Lucille Pourcel, Ivo Pedruzzi, Sylvain Poux, Nicole Redaschi, Catherine Rivoire, Anastasia Sveshnikova, Chih-Hsuan Wei, Robert Leaman, Ling Luo, Zhiyong Lu, Alan Bridge   +18 more
doaj   +5 more sources

Structured information extraction from complex scientific text with fine-tuned large language models [PDF]

arXiv, 2022
Intelligently extracting and linking complex scientific information from unstructured text is a challenging endeavor particularly for those inexperienced with natural language processing. Here, we present a simple sequence-to-sequence approach to joint named entity recognition and relation extraction for complex hierarchical information in scientific ...
Ceder, Gerbrand, Dagdelen, John, Dunn, Alexander, Jain, Anubhav, Lee, Sanghoon, Persson, Kristin, Rosen, Andrew S., Walker, Nicholas   +7 more
arxiv   +2 more sources

Spilanthol: occurrence, extraction, chemistry and biological activities

Revista Brasileira de Farmacognosia, 2016
AbstractSpilanthol (C14H23NO, 221.339g/mol) is a bioactive compound that is found in many different plants that are used as traditional remedies throughout the world. It is present in Heliopsis longipes and several species in the genus Acmella, including A. oleracea L., also known as paracress and jambu.
A. F. Barbosa, Mário G. de Carvalhoa, Robert E. Smith, A. Sabaa-Srur   +3 more
semanticscholar   +5 more sources

Extraction chemistry of low-molecular-weight aliphatic alcohols [PDF]

, 1987
The extractability of the eight lowest monofunctional aliphatic alcohols from their aqueous solutions into both inert hydrocarbons and reactive extractants is comprehensively reviewed.
A.S. Kertes, C. Judson King
openalex   +2 more sources

Cloud point extraction coupled with back extraction: a green methodology in analytical chemistry

Forensic Sciences Research, 2021
Recently, cloud point extraction (CPE) coupled with back extraction (BE) has been suggested as a promising alternative to liquid-liquid extraction. In CPE, non-ionic surfactants in aqueous solutions form micelles and the solution becomes turbid when ...
Shivpoojan Kori
doaj   +2 more sources