Recebido em 19/1/11; aceito em 21/5/11; publicado na web em 22/7/11 A method using LC/ESI-MS/MS for the quantitative analysis of Ochratoxin A in roasted coffee was described. Linearity was demonstrated (r = 0.9175). The limits of detection and quantification were 1.0 and 3.0 ng g -1 , respectively. Trueness, repeatability and intermediate precision values were 89.0-108.8%; 2.4-13.7%; 12.5-17.8%, respectively. To the best of our knowledge, this is the first report in which Ochratoxin A in roasted coffee is analysed by LC/ESI-MS/MS, contributing to the field of mycotoxin analysis, and it will be used for future production of Certified Reference Material.
Estudo de alguns compostos bioativos das pitayas de polpas branca e vermelha (Cereus undatus, Sinonímia: Hylocereus guatemalensis, H.undatus) Study of some bioactive compounds of white and red pulp pitayas (Cereus undatus, Synonymy: Hylocereus guatemalensis, H.undatus
Dipteryx odorata (Aubl.) Willd, Fabaceae family, is a native species from the Amazon forest, Brazil. The goal of the work was to isolate and identify the flavonoids in the endocarp from D. odorata in order to minimize costs with solvents, time and residues.
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