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Nutritíonal Composition and Polyphenolic Content of Edible Peumus boldus Mol. Fruits Ciencia e Investigación Agraria
Velásquez,Patricia; Sandoval,María Ignacia; Giordano,Ady; Gómez,Miguel; Montenegro,Gloria.
Peumus boldus is an endemic Chilean tree whose edible fruit lack a history of scientific research. The aim of this study was to determine its nutritional composition (moisture, ash, crude fiber, proteins, carbohydrates and lipids) and polyphenolic content (total phenolic content, HPLC-DAD, HPLC-MS/MS analysis) at different stages of development. The results show that the fruit decreased in ash, crude fiber and total phenolic content throughout its development, while its carbohydrate and protein content increased. An increase in phenolic molecules such as catechin and epicatechin was also observed. This is the first report on the nutritional composition and phenolic content of Peumus boldus Mol. fruits.
Tipo: Journal article Palavras-chave: Ash; Crude fiber; Kjeldahl; Goldfish; Phenol-sulfuric method; Total phenolic content.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100007
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LC-MS/MS analysis of neonicotinoid insecticides: Residue findings in chilean honeys Ciência e Agrotecnologia
Bridi,Raquel; Larena,Arturo; Pizarro,Paula Núñez; Giordano,Ady; Montenegro,Gloria.
ABSTRACT Neonicotinoids are a relatively new generation of insecticides that have been used for control of pests such as aphids, leafhoppers and whiteflies. This paper presents for the first time a determination of residues of four neonicotinoid insecticides (acetamiprid, thiamethoxam, thiacloprid and imidacloprid) in Chilean honey using QuEChERS extraction and UHPLC-MS/MS analysis. The limits of detection and quantification found for all analytes ranging from 0.34 to 1.43 μg kg-1 and from 0.30 to 4.76 μg kg-1, respectively. The extraction using QuEChERS method provided recoveries over 79% and the precision showed coefficient of variation lower than 20%. These data are in agreement with the international criteria that recommend general recovery limits of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: QuEChERS; Pesticide residues; Food analysis..
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000100051
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