4 documents found, page 1 of 1
A New Approach for Histamine Functionalized Nanoparticles as Sorbent Phase for ...
Lopes,Daniela; Morés,Lucas; Bernardi,Gabrieli; Campedelli,Roberta R.; Pinheiro,Gabriela; Souza,Bruno S. de; Carasek,EduardoIn this study, for the first time, histamine-functionalized magnetic nanoparticles (HIS-MNP) were used as sorbent phase combined with bar adsorptive microextraction (BAµE) for the determination of methylparaben (MP), ethylparaben (EP), propylparaben (PP), and butylparaben (BP) in water samples by high performance liquid chromatography coupled with diode array detection (HPLC-DAD). Extraction and desorption cond...
Natural sparkling guava wine: volatile and physicochemical characterization
Bertagnolli,Silvana Maria Michelin; Bernardi,Gabrieli; Donadel,Jossiê Zamperetti; Fogaça,Aline de Oliveira; Wagner,Roger; Penna,Neidi GarciaABSTRACT: Although different tropical fruit species have been used in the development of fermented beverages, there are only few references in the literature to the production of natural sparkling wines from fruits other than grapes. In this sense, the objective of the present research was the development and physicochemical and volatile characterization of a natural sparkling guava wine produced by the champen...
Fast Sample Preparation Method Using Ultra-High Performance Liquid Chromatograp...
Bernardi,Gabrieli; Rizzetti,Tiele M.; Adaime,Martha B.; Zanella,Renato; Prestes,Osmar D.An easy and efficient sample preparation method was developed for the determination of natamycin residues in wine samples by solvent extraction and ultra-high performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) analysis. After choosing acetonitrile as extraction solvent, an experimental design was carried out with different amounts of C18 and primary secondary amine (PSA) sorbent...
Evaluation of QuEChERS Sample Preparation and Gas Chromatography Coupled to Mas...
Volpatto,Fernanda; Wastowski,Arci D.; Bernardi,Gabrieli; Prestes,Osmar D.; Zanella,Renato; Adaime,Martha B.An effective analytical method for pesticides multiresidue determination in grape samples was developed and validated. A modified quick, easy, cheap, effective, robust and safe (QuEChERS) method was used to extract the target compounds. Several sorbent materials were tested for the clean-up step using dispersive solid phase extraction (d-SPE) and Florisil® was selected. Samples extracts were evaporated before i...