University of Trás-os-Montes and Alto Douro, Biology and Environment Department, Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), 5001 801 Vila Real, Portugal.
CQ-VR, Chemistry Research Centre - Vila Real, Food and Wine Chemistry Lab, University of Trás-os-Montes and Alto Douro, Biology and Environment Department, 5001 801 Vila Real, Portugal.
Food Chem. 2020 Oct 30;328:126833. doi: 10.1016/j.foodchem.2020.126833. Epub 2020 Apr 15.
Raspberries are rich in polyphenols but the impact of organic versus conventional agricultural practices on their phytochemical composition is not well known. This study aimed to analyse and compare the polyphenol accumulation in raspberries grown under both agricultural practices in the same edaphoclimatic conditions. Two raspberry cultivars 'Kweli' and 'Tulameen' were used. Under organic agricultural practices, the polyphenols levels increased for the 'Kweli' cultivar but decreased for the 'Tulameen' cultivar. 'Tulameen' cultivar grown under conventional agricultural practices contained higher anthocyanins levels than grown under organic agricultural practices while for the 'Kweli' cultivar no significant differences were observed between the two agricultural practices. 'Kweli' cultivar presented a significantly higher amount of ellagitannins and ellagic acid derivatives when compared to the 'Tulameen' cultivar under both agricultural practices. The effect of the agricultural practices on the raspberries' chemical profile was dependent on the cultivar and cannot be generalised.
覆盆子富含多酚，但有机农业与传统农业实践对其植物化学成分的影响尚不清楚。本研究旨在分析和比较在相同的土壤气候条件下，采用这两种农业实践种植的覆盆子中多酚的积累情况。使用了两个覆盆子品种“Kweli”和“Tulameen”。在有机农业实践下，“Kweli”品种的多酚水平增加，但“Tulameen”品种的多酚水平下降。在传统农业实践下种植的“Tulameen”品种比在有机农业实践下种植的品种含有更高水平的花青素，而对于“Kweli”品种，两种农业实践之间没有观察到显著差异。与“Tulameen”品种相比，“Kweli”品种在两种农业实践下都表现出显著更高水平的鞣花单宁和鞣花酸衍生物。农业实践对覆盆子化学特征的影响取决于品种，不能一概而论。
