Plant Molecular Biology and Biotechnology Unit, B22, University of Liège, Sart Tilman, B-4000 LIEGE Belgium.
J Agric Food Chem. 2011 Jun 8;59(11):6165-71. doi: 10.1021/jf201013k. Epub 2011 May 12.
Apple and pear fruits are important sources of secondary plant metabolites and one of the major sources of dietary phenolics consumed all year round. The aim of this work was to identify the main variables influencing phenolic content and antioxidant capacity in apples. Higher phenolic and antioxidant contents were observed in some varieties (such as the Delbar Estival apple and Durondeau pear). Storage conditions were important. Our results also showed that fruits should be consumed rapidly after purchase and with their peel. After one week of domestic storage, the ascorbic acid content was found to decrease by 75%. Peeling led to a more than 25% decrease in total phenolics and ascorbic acid. The harvest time (at normal ripeness) had only a limited impact, but significant year-to-year variations were observed. In conclusion, well-chosen and well-stored apples and pears may contribute to an antioxidant-rich diet if consumed rapidly and with their peel.
苹果和梨是重要的次生植物代谢物来源，也是全年食用的主要膳食酚类物质来源之一。本研究旨在确定影响苹果中酚类物质含量和抗氧化能力的主要因素。一些品种（如 Delbar Estival 苹果和 Durondeau 梨）的酚类物质和抗氧化能力较高。储存条件很重要。我们的研究结果还表明，水果应在购买后尽快食用，且带皮食用。家庭储存一周后，发现抗坏血酸含量下降了 75%。削皮导致总酚类物质和抗坏血酸含量下降超过 25%。收获时间（正常成熟时）的影响有限，但每年都有明显的变化。综上所述，如果快速食用并带皮，选择和储存良好的苹果和梨可能有助于摄入富含抗氧化剂的饮食。
