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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
24/10/2011 |
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Data da última atualização: |
24/10/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FALCÃO, L. D.; REVEL, G.; ROSIER, J. P.; BORDIGNON-LUIZ, M. T. |
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Afiliação: |
Epagri |
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Título: |
CG-olfatometria: percepción de aromas de impacto en dos vinos cabernet sauvignon sensorialmente diferentes. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Revista Enologia, Argentina, v. 5, n. 4, p. 1-8, 2008. |
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Idioma: |
Português |
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Conteúdo: |
Dos vinos Cabernet Sauvignon (vendimia 2004) fueron sometidos al análisis de la
Cromatografía de Gases-Olfatometría (GC-O) usando el método de análisis de frecuencia
de la detección (DFA). De un análisis sensorial clásico anterior, el vino A tenía
características vegetativas y el vino B tenía los aromas de frutas rojas y de mermelada. Los jueces seleccionaron catorce descriptores aromáticos de impacto en el análisis de DFA. El furaneol fue asociado al aroma de mermelada y de caramelo por la GC-O y su
concentración media en el vino B (252,21mg/l) fue perceptiblemente más alta que en el
vino A (111,47mg/l). En contraste, la cantidad de la 2-metoxi-3-isobutilpirazina (MIBP),
descripta como aroma vegetal o de pimentón, fue mucho más alta en el vino A (0,040mg/l) que el vino B (0,018mg/l). Aunque la MIBP estaba presente en concentraciones por encima de su umbral olfativo de detección en los dos vinos, los jueces no la percibieron en el vino B, durante un análisis sensorial clásico. La b-damascenona es probablemente la responsable de intensificar las notas frutadas en los dos vinos y de enmascarar el aroma vegetal de la MIBP en el vino B.
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Palavras-Chave: |
Análisis sensorial; Cromatografía; Gases-Olfatometría; Vinos Cabernet. |
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Categoria do assunto: |
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LEADER 01683naa a2200169 a 4500
001 1081543
005 2011-10-24
008 2008 bl uuuu u00u1 u #d
100 1 $aEpagri
245 $aCG-olfatometria$bpercepción de aromas de impacto en dos vinos cabernet sauvignon sensorialmente diferentes.
260 $c2008
520 $aDos vinos Cabernet Sauvignon (vendimia 2004) fueron sometidos al análisis de la Cromatografía de Gases-Olfatometría (GC-O) usando el método de análisis de frecuencia de la detección (DFA). De un análisis sensorial clásico anterior, el vino A tenía características vegetativas y el vino B tenía los aromas de frutas rojas y de mermelada. Los jueces seleccionaron catorce descriptores aromáticos de impacto en el análisis de DFA. El furaneol fue asociado al aroma de mermelada y de caramelo por la GC-O y su concentración media en el vino B (252,21mg/l) fue perceptiblemente más alta que en el vino A (111,47mg/l). En contraste, la cantidad de la 2-metoxi-3-isobutilpirazina (MIBP), descripta como aroma vegetal o de pimentón, fue mucho más alta en el vino A (0,040mg/l) que el vino B (0,018mg/l). Aunque la MIBP estaba presente en concentraciones por encima de su umbral olfativo de detección en los dos vinos, los jueces no la percibieron en el vino B, durante un análisis sensorial clásico. La b-damascenona es probablemente la responsable de intensificar las notas frutadas en los dos vinos y de enmascarar el aroma vegetal de la MIBP en el vino B.
653 $aAnálisis sensorial
653 $aCromatografía
653 $aGases-Olfatometría
653 $aVinos Cabernet
773 $tRevista Enologia, Argentina$gv. 5, n. 4, p. 1-8, 2008.
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Epagri-Sede (Epagri-Sede) |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
18/07/2011 |
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Data da última atualização: |
18/07/2011 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Circulação/Nível: |
-- - -- |
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Autoria: |
PETRI, J. L.; HAWERROTH, F. J.; LEITE, G. B.; COUTO, M. |
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Afiliação: |
Epagri |
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Título: |
Apple Pruning for Mild Winter Regions in High Density Systems. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: INTERNATIONAL HORTICULTURAL CONGRESS, 28., 2010, Lisboa. Book of Abstracts... Lisboa: ISHS, 2010. |
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Idioma: |
Inglês |
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Conteúdo: |
When the apple trees are cultivated in mild winter regions like in Southern Brazilian conditions show a long growth period, with shoot growth above of 1 meter. Actually the apple orchards have been established in high density systems, with spacing of 4.0-4.5 m between rows and 0.8-1.2 m between trees, in the central leader system and modified forms. In the spring shoots restart the growth, however the shoots tend to budbreak in middle third apical, and the others buds do not show growth, mainly near the stem insertion point. Shoot growth measures in orchards of first and second year show a shoot growth of 128.2 cm and 142.5 cm, respectively for ?Gala? and ?Fuji? cultivars. These shoots show a strong apical dominance and may show a growth cessation during the vegetative season with growth reassumed in the season end. When the vegetative growth is reassumed there is the formation of small area with very weak buds, which also occurs in the growth resumption in apical buds in the next season. The high density needs to reduce shoot size, but without the apical dominance increase. In order to determine the effect of pruning at the growth cessation point, experiments were done to evaluate the time and intensity of pruning to keep a canopy with short shoots. The results show that it is possible to keep short shoots compatible with the high density spacing, reducing bending and stimulating the formation of fructification structures along the shoots. Pruning should be done during the growing season and may be complemented with the growth retardants. The ratio of 2/3 of the shoot diameter in the stem insertion point develops shoots very strong for the high density system, being more appropriate ratio of 1/3 to 1/5 of the shoot diameter for the primary and secondary shoots. MenosWhen the apple trees are cultivated in mild winter regions like in Southern Brazilian conditions show a long growth period, with shoot growth above of 1 meter. Actually the apple orchards have been established in high density systems, with spacing of 4.0-4.5 m between rows and 0.8-1.2 m between trees, in the central leader system and modified forms. In the spring shoots restart the growth, however the shoots tend to budbreak in middle third apical, and the others buds do not show growth, mainly near the stem insertion point. Shoot growth measures in orchards of first and second year show a shoot growth of 128.2 cm and 142.5 cm, respectively for ?Gala? and ?Fuji? cultivars. These shoots show a strong apical dominance and may show a growth cessation during the vegetative season with growth reassumed in the season end. When the vegetative growth is reassumed there is the formation of small area with very weak buds, which also occurs in the growth resumption in apical buds in the next season. The high density needs to reduce shoot size, but without the apical dominance increase. In order to determine the effect of pruning at the growth cessation point, experiments were done to evaluate the time and intensity of pruning to keep a canopy with short shoots. The results show that it is possible to keep short shoots compatible with the high density spacing, reducing bending and stimulating the formation of fructification structures along the shoots. Pruning should be done during the ... Mostrar Tudo |
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Palavras-Chave: |
High density; Malus domestica; Mild winter regions; Prunning. |
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Categoria do assunto: |
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Marc: |
LEADER 02294naa a2200169 a 4500
001 1078398
005 2011-07-18
008 2010 bl uuuu u00u1 u #d
100 1 $aEpagri
245 $aApple Pruning for Mild Winter Regions in High Density Systems.
260 $c2010
520 $aWhen the apple trees are cultivated in mild winter regions like in Southern Brazilian conditions show a long growth period, with shoot growth above of 1 meter. Actually the apple orchards have been established in high density systems, with spacing of 4.0-4.5 m between rows and 0.8-1.2 m between trees, in the central leader system and modified forms. In the spring shoots restart the growth, however the shoots tend to budbreak in middle third apical, and the others buds do not show growth, mainly near the stem insertion point. Shoot growth measures in orchards of first and second year show a shoot growth of 128.2 cm and 142.5 cm, respectively for ?Gala? and ?Fuji? cultivars. These shoots show a strong apical dominance and may show a growth cessation during the vegetative season with growth reassumed in the season end. When the vegetative growth is reassumed there is the formation of small area with very weak buds, which also occurs in the growth resumption in apical buds in the next season. The high density needs to reduce shoot size, but without the apical dominance increase. In order to determine the effect of pruning at the growth cessation point, experiments were done to evaluate the time and intensity of pruning to keep a canopy with short shoots. The results show that it is possible to keep short shoots compatible with the high density spacing, reducing bending and stimulating the formation of fructification structures along the shoots. Pruning should be done during the growing season and may be complemented with the growth retardants. The ratio of 2/3 of the shoot diameter in the stem insertion point develops shoots very strong for the high density system, being more appropriate ratio of 1/3 to 1/5 of the shoot diameter for the primary and secondary shoots.
653 $aHigh density
653 $aMalus domestica
653 $aMild winter regions
653 $aPrunning
773 $tIn: INTERNATIONAL HORTICULTURAL CONGRESS, 28., 2010, Lisboa. Book of Abstracts... Lisboa: ISHS, 2010.
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