Biology and Environment Department, University of Trás-os-Montes and Alto Douro, Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), Vila Real, Portugal.
CQ-VR, Chemistry Research Centre - Vila Real, Food and Wine Chemistry Lab, Biology and Environment Department, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal.
J Sci Food Agric. 2018 Sep;98(12):4616-4624. doi: 10.1002/jsfa.8990. Epub 2018 Apr 24.
Consumer demand for organic products is increasing because of their claimed health benefits. Blackberries are a rich source of polyphenols, with high antioxidant activity; nevertheless, the impact of organic versus conventional agricultural practices on its phytochemical composition is unknown. 'Loch Ness' and 'Chester Thornless' were selected as blackberry cultivars for this study because of their desired sensory and technological properties, which make them more suitable for export.
'Loch Ness' variety presented a higher amounts of polyphenols and higher antioxidant activity when compared to the 'Chester Thornless' variety. The impact of agricultural practices on the phytochemical composition of the two varieties was contradictory. Under organic agricultural practices, levels of polyphenols increased for 'Loch Ness' and decreased for 'Chester Thornless', whereas the soluble solids content increased in both varieties. These changes in composition were correlated with changes observed in the blackberries' sensory profile.
The effect of agricultural practices on the blackberries' chemical and sensory profile was dependent on the variety and cannot be generalized. © 2018 Society of Chemical Industry.
由于有机产品据称具有健康益处，消费者对其的需求正在增加。黑莓是多酚的丰富来源，具有很高的抗氧化活性; 然而，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。“尼斯湖”和“切斯特无刺”被选为黑莓品种，因为它们具有理想的感官和技术特性，使它们更适合出口。
与“切斯特无刺”品种相比，“尼斯湖”品种的多酚含量更高，抗氧化活性更高。农业实践对两个品种植物化学成分的影响是矛盾的。在有机农业实践下，“尼斯湖”品种的多酚含量增加，而“切斯特无刺”品种的多酚含量减少，而两种品种的可溶性固形物含量均增加。这些成分的变化与黑莓感官特征的变化有关。
农业实践对黑莓的化学和感官特征的影响取决于品种，不能一概而论。 © 2018 化学工业协会。
