Phenolic composition of Tempranillo wines following early defoliation of the vines

  1. Diago, M.P. 1
  2. Ayestarán, B. 1
  3. Guadalupe, Z. 1
  4. Garrido, Á. 1
  5. Tardaguila, J. 1
  1. 1 Instituto de Ciencias de la Vid y del Vino
    info

    Instituto de Ciencias de la Vid y del Vino

    Logroño, España

    GRID grid.481584.4

Journal:
Journal of the Science of Food and Agriculture

ISSN: 0022-5142

Year of publication: 2012

Volume: 92

Issue: 4

Pages: 925-934

Type: Article

Export: RIS
DOI: 10.1002/jsfa.4671 SCOPUS: 2-s2.0-84856685729 WoS: 000299888700029 GOOGLE SCHOLAR

Metrics

Cited by

  • Scopus Cited by: 42 (14-07-2021)

Journal Citation Reports

  • Year 2012
  • Journal Impact Factor: 1.759
  • Best Quartile: Q1
  • Area: AGRICULTURE, MULTIDISCIPLINARY Quartile: Q1 Rank in area: 6/57 (Ranking edition: SCIE)
  • Area: CHEMISTRY, APPLIED Quartile: Q2 Rank in area: 26/71 (Ranking edition: SCIE)
  • Area: FOOD SCIENCE & TECHNOLOGY Quartile: Q2 Rank in area: 47/124 (Ranking edition: SCIE)

SCImago Journal Rank

  • Year 2012
  • SJR Journal Impact: 0.869
  • Best Quartile: Q1
  • Area: Agronomy and Crop Science Quartile: Q1 Rank in area: 53/342
  • Area: Food Science Quartile: Q1 Rank in area: 42/284
  • Area: Biotechnology Quartile: Q2 Rank in area: 70/292
  • Area: Nutrition and Dietetics Quartile: Q2 Rank in area: 41/123

CiteScore

  • Year 2012
  • CiteScore of the Journal : 2.9
  • Area: Agronomy and Crop Science Percentile: 81
  • Area: Food Science Percentile: 80
  • Area: Biotechnology Percentile: 57
  • Area: Nutrition and Dietetics Percentile: 57
  • Area: Medicine (all) Percentile: 55

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Abstract

Background: Early defoliation is a viticultural practice aimed at crop control. So far, the impact of early leaf removal on the monomeric phenolic composition of wines has not been explored. This study examines the effects of early defoliation on the phenolic profile and content in Tempranillo wines. The influence of the defoliation method (manual vs mechanical) and the timing of leaf removal (pre-bloom vs fruit set) was investigated. Results: Over two consecutive seasons, 2007 and 2008, the monomeric phenolic composition in Tempranillo wines was studied by high-performance liquid chromatography with photodiode array detection, and 22 compounds were identified and quantified. Overall, early defoliation led to wines more intensely coloured, of higher alcohol content and with larger concentrations of hydroxycinnamic acids, flavonols and anthocyanins (in 2008 only for mechanical treatments). In the absence of fungal infection, resveratrol was found to increase in wines corresponding to early defoliation treatments. The method of leaf removal seemed to be more critical than the timing of intervention, and larger effects on wine phenolic composition were observed for mechanical treatments. Conclusion: Early defoliation proved to be an effective technique for improving the phenolic composition of Tempranillo wines, by favouring the accumulation of hydroxycinnamics, flavonols and anthocyanins. This is an important achievement, as wine quality is often described by its colour and phenolic attributes. © 2011 Society of Chemical Industry.