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Silva da Costa Russany Pinheiro Wandson Braamcamp de Souza Arruda Mara Silvia Pinheiro Costa Carlos Emmerson Ferreira Converti Attilio Ribeiro Costa Roseane Maria Silva Júnior José Otávio Carrera 《Journal of Thermal Analysis and Calorimetry》2022,147(1):275-284
Journal of Thermal Analysis and Calorimetry - Cupuassu (Theobroma grandiflorum Schum.) is a typical Amazonian fruit, whose seed is used as raw material to produce cupulate. The by-product of its... 相似文献
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Paulo Wender P. Gomes Hugo Barretto Jos Diogo E. Reis Abrao Muribeca Alice Veloso Carlos Albuquerque Andrew Teixeira Wandson Braamcamp Snia Pamplona Consuelo Silva Milton Silva 《Molecules (Basel, Switzerland)》2022,27(6)
Peperomia pellucida is a species known in the Amazon as “erva-de-jabuti” that has been used in several therapeutic applications based on folk medicine. Herein, we describe the classes, subclasses, and the main compounds of the leaves, stems, and roots from P. pellucida by ultra-high performance liquid chromatography coupled to high-resolution mass spectrometry associated with molecular networks, mirror plot on the GNPS library, and machine learning. These data show compounds that were annotated for the first time in the Peperomia genus, such as 2′,4′,5′-trihydroxybutyrophenonevelutin, dehydroretrofractamide C, and retrofractamide B. 相似文献
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José Felipe dos Santos Jonatas de Oliveira S. Silva José Fernando Macedo José Carlos S. Júnior Wandson S. Almeida Eliana Midori Sussuchi 《Electroanalysis》2023,35(9):e202200563
Estrone (E1) is associated with various health and environmental issues, necessitating the development of analytical methods for monitoring E1 in different matrices. In this context, the present study reports the development of a graphene quantum dot-based electrode (GQD/E) to detect estrone in water and urine samples. Voltammetric measurements under optimized conditions demonstrated the feasibility of using GQD/E to detect estrone at trace levels in aqueous samples. Two linear dynamic ranges were obtained at concentrations from 0.05 to 10.00 μmol L−1, with limit of detection (LOD) and quantification (LOQ) of 28.0 and 96.0 nmol L−1, respectively. Furthermore, the LOD value obtained in this study is one of the lowest ever reported in the literature for the electrochemical determination of E1. The method response showed no significant variation in the current intensity of E1 in the presence of the 16 interferents. The recovery values obtained by using GQD/E to quantify estrone in fortified samples of seawater, tap water, wastewater and synthetic urine ranged from 95.9 to 108.1 %, indicating that the method presents highly sensitive for detecting estrone in aqueous matrices. 相似文献
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