University of Agricultural Sciences and Veterinary Medicine, Department of Horticultural Technologies, 3, Mihail Sadoveanu Alley, Iaşi 700490, Romania.
Food Chem. 2014 Mar 1;146:485-91. doi: 10.1016/j.foodchem.2013.09.072. Epub 2013 Sep 20.
Plums, the most commonly consumed fruits from Romania, are fruits rich in bioactive compounds, such as antioxidants. This research work was carried out to investigate the antioxidant potential of twelve plum cultivars, fresh and stored during 10days at 4°C by using different methods (DPPH, ORAC and erythrocyte resistance to haemolysis). The contents of total phenolic compounds and total anthocyanins were also determined by specific spectrometric methods. Significant differences between fresh and stored plum cultivars (p<0.05) were found. Storage at 4°C resulted in an increase in antioxidant potential and anthocyanins content of the autumn plum varieties. Autumn plum varieties also showed a higher antioxidant capacity than summer varieties, as assessed by the ORAC and the haemolysis resistance assays. Our results suggest that, even after storage, plums could be a good source of antioxidants, which may provide health-promoting effects for humans.
罗马尼亚最常食用的水果是李子，它富含生物活性化合物，如抗氧化剂。本研究工作旨在通过使用不同方法（DPPH、ORAC 和红细胞对溶血的抗性）来研究十二种李子品种的抗氧化潜力，这些李子品种在 4°C 下新鲜储存和储存 10 天。还通过特定的分光光度法测定了总酚化合物和总花青素的含量。发现新鲜和储存的李子品种之间存在显著差异（p<0.05）。在 4°C 下储存会增加秋季李子品种的抗氧化潜力和花青素含量。秋季李子品种的抗氧化能力也高于夏季品种，这可以通过 ORAC 和溶血抵抗试验来评估。我们的结果表明，即使经过储存，李子仍然可以作为抗氧化剂的良好来源，这可能对人类健康具有促进作用。
