Data for: EFFECT OF TEMPERATURE, pH, β- AND HP-β-CDs ON THE SOLUBILITY AND STABILITY OF FLAVANONES: NARINGENIN AND HESPERETIN

Development of a new methodology to improve the aqueous solubility of flavanones naringenin and hesperetin

Data for: EFFECT OF TEMPERATURE, pH, β- AND HP-β-CDs ON THE SOLUBILITY AND STABILITY OF FLAVANONES: NARINGENIN AND HESPERETIN

Development of a new methodology to improve the aqueous solubility of flavanones naringenin and hesperetin

Detection of chemical residues in tangerine juices by a duplex immunoassay

[EN] A rapid duplex ELISA for the simultaneous determination of two of the most widely used organophosphorous insecticides in tangerine juices is described. To accomplish this aim, two individual enzyme-linked immunosorbent assays for chlorpyrifos and fenthion pesticides were integrated into one ELISA test. The strategy uses 96-well plates with specific wells coated with the corresponding haptenized conjugate. The optimized duplex ELISA was accomplished within 40 min achieving a detection limit of 0.20 +/- 0.04 mu g/L and 0.50 +/- 0.06 mu g/L, for chlorpyrifos and fenthion, respectively in tangerine juice samples. The determination of residues of both pesticides was carried out by simple sample dilution, without any extra sample clean-up procedure. Results of testing precision, stability, and selectivity demonstrated that the assay provided reliable analytical performances for the simultaneous determination of residues of chlorpyrifos and fenthion in fruit juice samples below the established European maximum residue limits (MRL). In addition, the accuracy and reliability of this duplex bioanalytical method is demonstrated by analyzing blind spiked juice samples and the results, correlated well with those achieved using a well-established GC/MS method (recoveries between 95% and 106%). (C) 2013 Elsevier B.V. All rights reserved.The author P. Navarro acknowledges a Grant from Fundacion Seneca (Region de Murcia, Spain).Navarro Martínez, P.; Pérez, A.; Gabaldón, JA.; Núñez-Delicado, E.; Puchades, R.; Maquieira Catala, Á.; Morais, S. (2013). Detection of chemical residues in tangerine juices by a duplex immunoassay. Talanta. 116:33-38. doi:10.1016/j.talanta.2013.04.062S333811

A sustainable approach by using microalgae to minimize the eutrophication process of Mar Menor lagoon

The present study evaluates the removal capacity of microalgae photobioreactors of environmental pollutants present in wastewater from the dry riverbed El Albujón, as a way to minimize the eutrophication process of the Mar Menor. Particularly, the capacity of four autochthonous microalgae consortia collected from different locations of the salty lagoon to remove emerging contaminants (simazine, atrazine, terbuthylazine, adenosine and ibuprofen), nitrates, and phosphates, was evaluated. Among the four microalgae consortia, consortium 1 was the best in terms of biomass productivity (0.11 g L−1 d−1) and specific growth rate (0.14 d−1), providing 100% removal of emerging contaminants (simazine, atrazine, terbuthylazine, adenosine and ibuprofen), and a maximal reduction and consumption of macronutrients, especially nitrates and phosphates, reaching levels below 28 mg L−1, that is, a decrease of 89.90 and 99.70% of nitrates and phosphates, respectively. Therefore, this consortium (Monoraphidium sp., Desmodesmus subspicatus, Nannochloris sp.) could be selected as a green filter for successful large-scale applications. This study is the first one that combines the successful removal of herbicides, ibuprofen and adenosine as emerging contaminants, and nitrate removal.This work was funded by the Instituto de Fomento de la Región de Murcia, Spain (RAMBLA Project 2015.08.ID+I.0003), under research and innovation program.Peer reviewe

Removal and toxicity evaluation of a diverse group of drugs from water by a cyclodextrin polymer/pulsed light system

The presence of pharmaceutical compounds (PhCs) in the effluents of wastewater treatment plants (WWTPs) is an ecological concern. The issue could be alleviated by trapping those substances by cyclodextrin (CD) polymers or photolyzing them by pulsed light (PL). Consequently, a sequential CD polymer/PL system was tested for the removal of PhCs. Firstly, a survey detected the presence of recurrent PhCs in the effluents of local WWTPs. Then, pure water was spiked with 21 PhCs, 100 μg/L each one. The three-dimensional network provides amphiphilic features to the CD polymer that reduced the pollutant concentration by 77 %. Sorption involves a plead of physical and chemical mechanisms hindering the establishment of a general removal model for all compounds. The performed simulations hint that the retention capacity mainly correlates with the computed binding energies, so that theoretical models are revealed as valuable tools for further improvements. The complementary action of PL rose the elimination to 91 %. The polymer can be reused at least 10 times for ibuprofen (model compound) removal, and was able to eliminate the ecotoxicity of an ibuprofen solution. Therefore, this novel sequential CD polymer/PL process seems to be an efficient alternative to eliminate PhCs from wastewater.This work was supported by the project LIFE16ENV/ES/000169, "Validation of adsorbent materials and advanced oxidation techniques to remove emerging pollutants in treated wastewater". The authors also acknowledge SCIEX for providing the loan instrument LC/HRMS QTOF X500R. This work used computational resources from the Plataforma Andaluza de Bioinformática at the Universidad de Málaga and the supercomputing infrastructure of Poznan Supercomputing Center.Peer reviewe