Cirillo Aurora, Graziani Giulia, De Luca Lucia, Cepparulo Marco, Ritieni Alberto, Romano Raffaele, Di Vaio Claudio
Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Portici, Italy.
Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy.
Plants (Basel). 2023 Mar 10;12(6):1259. doi: 10.3390/plants12061259.
The effects of climate change have a great impact on the Mediterranean regions which are experiencing an increase in drought periods with extreme temperatures. Among the various solutions reported to reduce the damage caused by extreme environmental conditions on olive plants, the application of anti-transpirant products is widespread. In an increasingly current scenario of climate change, this study was designed to evaluate the effect of kaolin on the quantitative and qualitative parameters of drupes and oil in a little-known olive cultivar known as "Racioppella", belonging to the autochthonous germplasm of Campania (Southern Italy). To this purpose, the determination of maturation index, olive yield/plant, and bioactive components analysis (anthocyanins, carotenoids, total polyphenols, antioxidant activity, and fatty acids) were carried out. Kaolin applications showed no statistically significant differences in terms of production/plant while a significant increase in the drupe oil content was observed. Kaolin treatments resulted in increased anthocyanins (+24%) and total polyphenols (+60%) content and at the same time a significant increase in the antioxidant activity (+41%) of drupes was recorded. As far as oil is concerned, the results showed an increase in monounsaturated fatty acids, oleic and linoleic acids, and total polyphenols (+11%). On the basis of the results obtained, we can conclude that kaolin treatment can be considered as a sustainable solution to improve qualitative parameters in olive drupes and oil.
气候变化的影响对地中海地区产生了巨大冲击，这些地区正经历着干旱期增加且伴有极端气温的情况。在据报道的各种减少极端环境条件对橄榄树造成损害的解决方案中，抗蒸腾剂产品的应用很普遍。在气候变化日益普遍的背景下，本研究旨在评估高岭土对一种鲜为人知的名为“拉乔佩拉”的橄榄品种的核果和油的数量和质量参数的影响，该品种属于坎帕尼亚（意大利南部）的本土种质。为此，进行了成熟指数、单株橄榄产量的测定以及生物活性成分分析（花青素、类胡萝卜素、总多酚、抗氧化活性和脂肪酸）。高岭土的施用在单株产量方面没有显示出统计学上的显著差异，但观察到核果油含量有显著增加。高岭土处理导致花青素含量增加（+24%）和总多酚含量增加（+60%），同时核果的抗氧化活性显著增加（+41%）。就油而言，结果显示单不饱和脂肪酸、油酸和亚油酸以及总多酚含量增加（+11%）。根据获得的结果，我们可以得出结论，高岭土处理可被视为改善橄榄核果和油质量参数的可持续解决方案。
