Relation between Seed Appearance and Phenolic Maturity: A Case Study Using Grapes cv. Carménère
Sensory evaluation of grapes (Vitis vinifera L.) plays a key role in determining the harvest time in grapevine varieties. The harvest time of cv. Carménère is one of the latest of Chile. During the season 2007-2008, the evolution of the appearance of ’Carménère’ seeds was evaluat...
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Instituto de Investigaciones Agropecuarias, INIA
2010
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oai:scielo:S0718-583920100003000052018-10-01Relation between Seed Appearance and Phenolic Maturity: A Case Study Using Grapes cv. CarménèreFredes,ClaudioVon Bennewitz,EduardoHolzapfel,EduardoSaavedra,Felipe seed development harvest index seed color phenols Sensory evaluation of grapes (Vitis vinifera L.) plays a key role in determining the harvest time in grapevine varieties. The harvest time of cv. Carménère is one of the latest of Chile. During the season 2007-2008, the evolution of the appearance of ’Carménère’ seeds was evaluated as a harvest criterion, comparing it with the chemical and phenolic ripening. The samples were obtained from an organic vineyard located in Curicó Valley, Chile. Starting at 16 °Brix, 100 seed berries samples were collected weekly from medium vigor vines in order to register photographically the ventral and dorsal sides of each seed. In addition to the seed tannins percentage, the extractable anthocyanins, total anthocyanins and total polyphenols index, as well as the titratable acidity, soluble solids and pH were registered. A color wheel of seed coat with a description of 12 digital colors was proposed for this cultivar. When the color number exceeded 10 (very dark brown), the soluble solids had already reached 24 °Brix 1 month earlier. Two inverse correlations between seed coat color vs. seed phenols percentage and vs. total polyphenol index were found. The proper phenolic maturation (maximum anthocyanins and minimum seed tannins percentage) occurred 177 d post flowering. The observation of seed coat color can be a reliable, simple and low-cost parameter to determine the correct ripeness of phenols in ’Carménère’ grapevines.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.70 n.3 20102010-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300005en10.4067/S0718-58392010000300005 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
seed development harvest index seed color phenols |
| spellingShingle |
seed development harvest index seed color phenols Fredes,Claudio Von Bennewitz,Eduardo Holzapfel,Eduardo Saavedra,Felipe Relation between Seed Appearance and Phenolic Maturity: A Case Study Using Grapes cv. Carménère |
| description |
Sensory evaluation of grapes (Vitis vinifera L.) plays a key role in determining the harvest time in grapevine varieties. The harvest time of cv. Carménère is one of the latest of Chile. During the season 2007-2008, the evolution of the appearance of ’Carménère’ seeds was evaluated as a harvest criterion, comparing it with the chemical and phenolic ripening. The samples were obtained from an organic vineyard located in Curicó Valley, Chile. Starting at 16 °Brix, 100 seed berries samples were collected weekly from medium vigor vines in order to register photographically the ventral and dorsal sides of each seed. In addition to the seed tannins percentage, the extractable anthocyanins, total anthocyanins and total polyphenols index, as well as the titratable acidity, soluble solids and pH were registered. A color wheel of seed coat with a description of 12 digital colors was proposed for this cultivar. When the color number exceeded 10 (very dark brown), the soluble solids had already reached 24 °Brix 1 month earlier. Two inverse correlations between seed coat color vs. seed phenols percentage and vs. total polyphenol index were found. The proper phenolic maturation (maximum anthocyanins and minimum seed tannins percentage) occurred 177 d post flowering. The observation of seed coat color can be a reliable, simple and low-cost parameter to determine the correct ripeness of phenols in ’Carménère’ grapevines. |
| author |
Fredes,Claudio Von Bennewitz,Eduardo Holzapfel,Eduardo Saavedra,Felipe |
| author_facet |
Fredes,Claudio Von Bennewitz,Eduardo Holzapfel,Eduardo Saavedra,Felipe |
| author_sort |
Fredes,Claudio |
| title |
Relation between Seed Appearance and Phenolic Maturity: A Case Study Using Grapes cv. Carménère |
| title_short |
Relation between Seed Appearance and Phenolic Maturity: A Case Study Using Grapes cv. Carménère |
| title_full |
Relation between Seed Appearance and Phenolic Maturity: A Case Study Using Grapes cv. Carménère |
| title_fullStr |
Relation between Seed Appearance and Phenolic Maturity: A Case Study Using Grapes cv. Carménère |
| title_full_unstemmed |
Relation between Seed Appearance and Phenolic Maturity: A Case Study Using Grapes cv. Carménère |
| title_sort |
relation between seed appearance and phenolic maturity: a case study using grapes cv. carménère |
| publisher |
Instituto de Investigaciones Agropecuarias, INIA |
| publishDate |
2010 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300005 |
| work_keys_str_mv |
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