Treatment with fungicides influences phytochemical quality of blackcurrant juice
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The impact of fungicide treatment on fungal infection and blackcurrant juice quality was examined in a series of field experiments over the course of 2 years. Fungicide treatment reduced the incidence of foliar disease and resulted in changes in the concentration of sugars, organic acids, polyphenols and anthocyanins in blackcurrant juice. Treatment with Signum® (containing pyraclostrobin, a strobilurin, and boscalid, a succinate dehydrogenase inhibitor) enhanced glucose, fructose and total sugar content in one treatment year but not in another. Treatment with Signum or Filan® (containing boscalid only) caused a reduction in the key organic acid citrate. Treatment with Signum or Platoon® (containing pyraclostrobin only) enhanced total polyphenol and anthocyanin content of juices. The data suggest a beneficial impact of fungicide treatment not only on disease control but also on juice phytochemistry.
Nwankno, A.J., et al. 2012. Treatment with fungicides influences phytochemical quality of blackcurrant juice. Annals of Applied Biology. 160(1): pp.86-96. Available from http://dx.doi.org/10.1111/j.1744-7348.2011.00523.x