Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education, College of Horticulture and Landscape Architecture, Southwest University , Chongqing , P. R. China.
Laboratory of Quality and Safety Risk Assessment for Citrus Products (Chongqing), Ministry of Agriculture, Citrus Research Institute, Southwest University , Chongqing , P. R. China.
Int J Food Sci Nutr. 2019 Nov;70(7):825-833. doi: 10.1080/09637486.2019.1587743. Epub 2019 Mar 25.
The phytochemicals in the peel of six oranges and ten mandarins including seven wild varieties and three cultivars were systematically characterised using UHPLC-Q-TOF-MS, and the correlation analysis was performed between phytochemicals and antioxidant capacity in order to investigate the phytochemical contributors to antioxidant capacity. The gradient elution was completed within 16 min and 92 compounds were undoubtedly or tentatively identified. Furthermore, the antioxidant capacities were determined using ABTS, DPPH and FRAP methods. The number of compounds, their contents and the antioxidant capacities were sequenced in the same order of the wild mandarins > cultivated mandarins > oranges. The correlation analysis that showed five compounds were significantly correlated with the antioxidant capacity and can act as main contributors to the citrus varieties with high antioxidant capacities. This study is systematic for the metabolites identification of mandarins and oranges and provides valuable information for effective utilisation of citrus peel and their bioactive compounds.
采用 UHPLC-Q-TOF-MS 系统地研究了 6 个橙子和 10 个橘子（包括 7 个野生品种和 3 个栽培品种）的果皮中的植物化学物质，并对植物化学物质与抗氧化能力之间的相关性进行了分析，以研究抗氧化能力的植物化学物质贡献者。梯度洗脱在 16 分钟内完成，鉴定出 92 种化合物，其中 92 种化合物被确证或推测鉴定。此外，还采用 ABTS、DPPH 和 FRAP 法测定了抗氧化能力。化合物的数量、含量和抗氧化能力按野生柑橘类 > 栽培柑橘类 > 橙子的顺序排列。相关性分析表明，有 5 种化合物与抗氧化能力显著相关，可作为高抗氧化能力柑橘品种的主要贡献者。本研究对柑橘果皮及其生物活性化合物的代谢物鉴定进行了系统研究，为有效利用柑橘果皮及其生物活性化合物提供了有价值的信息。
