Influence of Controlled Postflowering Temperature and Daylength on Individual Phenolic Compounds in Four Black Currant Cultivars

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• 作者：Tomasz L. Woznicki ; Kjersti Aaby ; Anita S?nsteby ; Ola M. Heide ; Anne-Berit Wold ; Siv F. Remberg
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2016
• 出版时间：February 3, 2016
• 年：2016
• 卷：64
• 期：4
• 页码：752-761
• 全文大小：431K
• ISSN：1520-5118

文摘

The effects of postflowering temperature and daylength on the concentration of individual phenolic compounds were studied in black currant (Ribes nigrum L.) berries under controlled phytotron conditions. The four cultivars studied varied greatly in their concentrations of individual phenolic compounds and temperature stability for accumulation. The concentrations of a wide range of identified phenolic compounds were strongly influenced by temperature over the 12–24 °C range, often with opposite temperature gradient patterns for compounds within the same subclass. Accumulation of anthocyanins and flavonols increased under natural long day conditions, which provided an increased daily light integral, while under identical light energy conditions, photoperiod had little or no effect on the concentration of phenolic compounds. Furthermore, with the exception of members of the hydroxycinnamic acid subclass, the concentration of most phenolic compounds was higher in berries ripened outdoors than in the phytotron, apparently due to screening of UV-B radiation by the glass cover.