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Registros recuperados: 6
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A multivariate approach to differentiate yerba mate (Ilex paraguariensis) commercialized in the southern Brazil on the basis of phenolics, methylxanthines and in vitro antioxidant activity Ciênc. Tecnol. Aliment.
ZIELINSKI,Acácio Antonio Ferreira; ALBERTI,Aline; BONA,Evandro; BORTOLINI,Débora Gonçalves; BENVENUTTI,Laís; BACH,Fabiane; Demiate,Ivo Mottin; NOGUEIRA,Alessandro.
Abstract The consumption of yerba mate beverages is related to several health benefits. These desirable properties are mainly due to the bioactive compounds. However, the levels of those compounds are directly affected by factors such as geographical origin. This study aimed to use chemometrics to evaluate the antioxidant compounds of yerba mate (consumed as chimarrão) marketed in southern Brazil. Neochlorogenic acid and caffeine were the main bioactive compounds found in this type of yerba mate beverage (chimarrão). The dataset was analyzed by chemometrics, and principal component analysis using the first three principal components explained 61.30% of the total variance. Hierarchical cluster analysis suggested three clusters, with cluster 1 containing the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioactive compounds; Geographical origin; Chimarrão; HPLC; Pattern recognition.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612020005006204
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Assessment of genetic diversity in sesame (Sesamum indicum L.) detected by Amplified Fragment Length Polymorphism markers Electron. J. Biotechnol.
Ali,Ghulam M; Yasumoto,Sirato; Seki-Katsuta,Masumi.
Sesame (Sesamum indicum L.) is one of the oldest oil crops and is widely cultivated in Asia and Africa. To determine the level of genetic diversity in relation to geographical origins and morphological characteristics, a total of 96 accessions have been collected from different parts of the world and were analyzed using AFLP techniques. Twenty-one primer pairs generated a total of 445 bands and among them 157 (35%) were polymorphic. Using UPGMA clustering analysis method based on the similarity coefficient, accessions were separated into two major groups. The first group mostly consists of Eastern Asian origin and another group consists of South Asian origin. Sub-clusters separated the accessions and form distinct diversity among groups. Considering the...
Tipo: Journal article Palavras-chave: AFLP; Genetic diversity; Geographical origin; Morphology; Sesame.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000100002
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Characterization and delimitation of the terroir coffee in plantations in the municipal district of Araponga, Minas Gerais, Brazil Rev. Ciênc. Agron.
Silva,Samuel de Assis; Queiroz,Daniel Marçal de; Pinto,Francisco de Assis de Carvalho; Santos,Nerilson Terra.
Differentiating coffees through the notion of terroirs allows us to determine potential areas for specialty coffee production and to characterize the type of coffee in these areas, exploring their potential. The objective of this work was to study spatial variability quality and to characterize and delimit terroirs in coffee crop production in Araponga municipality, Minas Gerais State, Brazil, using sensorial evaluation. The data were collected from four crops, from altitudes ranging from 770 to 1270 m, with the extract increasing from low to high. In each plot of crops, samples of cherry fruits were collected, dried, benefited, subjected to sensorial analysis and given grades ranging from 0 to 100 points for the global drink quality and relative...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Geographical origin; Sensorial quality; Spatial variability.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000100003
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Chemical profiling of guarana seeds (Paullinia cupana) from different geographical origins using UPLC-QTOF-MS combined with chemometrics. Repositório Alice
SILVA, G. S. da; CANUTO, K. M.; RIBEIRO, P. R. V.; BRITO, E. S. de; NASCIMENTO, M. M.; ZOCOLO, G. J.; COUTINHO, J. P.; JESUS, R. M. de.
bitstream/item/171385/1/ART17068.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Origem geográfica; QTOF-MS; PCA; OPLS-DA; Geographical origin; Paullinia Cupana.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085157
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Discrimination of Brazilian red wines according to the viticultural region, varietal, and winery origin Ciênc. Tecnol. Aliment.
Miele,Alberto; Rizzon,Luiz Antenor; Zanus,Mauro Celso.
This work evaluated the physicochemical composition of 171 red Brazilian wines from the 2006 vintage, which were represented by 21 varietals. These wines were produced by 58 Brazilian wineries in different regions of the country, with latitudes varying from 9º to 31º South. Physicochemical wine analysis was performed in the same year and discrimination in the viticultural regions, varietal wines, and wineries was performed by means of the principal component analysis (PCA). The main results show that wines from São Joaquim had higher values of A420, A520, A620, color intensity, total phenolic compounds, anthocyanins, and dry extracts, while those from Toledo had lower values of these variables; those from Vale do São Francisco had higher values of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Physicochemical composition; Geographical origin; Grape cultivar; Wine company; PCA.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612010000100039
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The taxonomic status and origin of the Portuguese oyster Crassostea angulata (Lamark, 1819) ArchiMer
Batista, Frederico; Leitao, Alexandra; Huvet, Arnaud; Lapegue, Sylvie; Heurtebise, Serge; Boudry, Pierre.
The taxonomic status of the Portuguese oyster Crassostrea angulata and the Pacific oyster Crassostrea gigas has often been a matter of controversy. Based on larval shell morphology, experimental hybridisation and electrophoretic studies of enzyme polymorphism several authors have considered these two species as being synonymous. During the recent years, several genetic studies based on mitochondrial DNA and microsatellites data have provided evidences that the two taxa are genetically distinct although closely related. Furthermore, karyotype analyses have also highlighted the close genetic similarity of these taxa in comparison with other cupped oyster species. However, a comparative analysis of restriction enzymes ideograms revealed differences between...
Tipo: Text Palavras-chave: Geographical origin; Phylogenetic; Genetic; Taxonomic status; Crassostrea angulata; Oyster.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/acte-3433.pdf
Registros recuperados: 6
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