College of Food Science and Engineering, Northwest A & F University, Yangling 712100, Shaanxi, China.
Molecules. 2013 Sep 27;18(10):12029-40. doi: 10.3390/molecules181012029.
Increasing demand for more jujube (Ziziphus jujube Mill.) production requires understanding the specific fertilization needs of jujube trees. This study was conducted to compare fruit yields, phenolic profiles and antioxidant activity of jujube in response to different fertilizers. Application of organic fertilizer appeared to enhance the phenolics and antioxidant activity accumulation of jujubes, compared to conventional fertilized jujubes. Amongst inorganic fertilizers, supplemental potassium as an individual nutrient improved the accumulation of phenolics in jujubes. Our results demonstrate that phenolics levels and antioxidant activity of jujube can be manipulated through fertilizer management and tracked by following proanthocyanidin concentrations. In a practical production context, the combination of organic fertilizers and inorganic fertilizers such as more supplemental individual potassium, and less supplemental individual nitrogen and phosphorus, might be the best management combination for achieving higher phenolic concentration, stronger antioxidant activity and a good harvest.
日益增长的大枣（Ziziphus jujube Mill.）生产需求需要了解枣树的具体施肥需求。本研究旨在比较不同肥料对大枣果实产量、酚类物质组成和抗氧化活性的影响。与常规施肥的大枣相比，有机肥的应用似乎能提高大枣中酚类物质和抗氧化活性的积累。在无机肥料中，单独补充钾能提高大枣中酚类物质的积累。研究结果表明，通过肥料管理可以调控大枣中酚类物质的含量和抗氧化活性，并通过测定原花青素的浓度来进行跟踪。在实际生产中，有机肥和无机肥（如更多的单独补充钾，以及更少的单独补充氮和磷）的结合可能是实现更高酚类浓度、更强抗氧化活性和良好收成的最佳管理组合。
