两种不同产地诺丽果的主要营养成分与抗氧化活性评价

Evaluation of main nutritional components and antioxidant activities of Morindacitrifolia L.from 2 kinds of different regions of cultivation

目的研究不同产地诺丽果的主要营养成分与抗氧化活性的异同。方法通过国家标准方法、分光光度法和色谱法对比分析海南和斐济诺丽果中主要矿物质和微量元素、挥发性成分、多酚组成与抗氧化活性。结果两种诺丽果中K、Ca、Mg、P、S元素含量较高,而斐济诺丽果的矿物质与微量元素的总量高于海南诺丽果。诺丽果挥发性成分主要由酯类和酸类化合物组成,并且斐济诺丽果果实中酯类和酸类成分含量较高。海南诺丽果中总酚的含量显著高于斐济诺丽果(P<0.05),而总黄酮含量则低于斐济诺丽果(P>0.05)。从两种诺丽果中共检测出20种酚类物质,其中6种酚酸和14种类黄酮物质,主要以没食子酸、槲皮素-3-鼠李糖苷和芦丁含量最高。海南诺丽果对2,2’-联氮-双(3-乙基苯并噻唑啉-6-磺酸)二铵盐自由基清除能力要强于斐济诺丽果,而对1,1-二苯基-2-三硝基苯肼自由基清除能力和铁离子还原能力则弱于斐济诺丽果,并与主要酚类物质组成相关。结论两种诺丽果具有较高的营养价值和良好的抗氧化活性,且斐济诺丽果的综合品质略优于海南诺丽果。

Objective To study the similarities and differences of the main nutritional components and antioxidant activities of Morindacitrifolia L.fruit from different origins of cultivation.Methods The main minerals and trace elements,volatile components,polyphenol compositions and antioxidant activity of Morindacitrifolia L.fruits from 2 kinds of different regions of cultivation(Hainan Province and Fiji)were compared and analyzed by national standard method,spectrophotometry and chromatography.Results The content of the elements of K,Ca,Mg,P,and S in the 2 kinds of Morindacitrifolia L.fruits was higher,while the total amount of minerals and trace elements Morindacitrifolia L.fruits from Fiji was higher than that from Hainan.The volatile components of Morindacitrifolia L.fruits were mainly composed of esters and acids,which were higher in the Morindacitrifolia L.fruits from Fiji.The content of total polyphenols in Morindacitrifolia L.fruit from Hainan was significantly higher than that from Fiji(P<0.05),whereas the content of total flavonoids was lower than that from Fiji(P>0.05).A total of 20 kinds of phenolic compounds were detected from the 2 kinds of Morindacitrifolia L.fruits,including 6 kinds of phenolic acids and 14 kinds of flavonoids,with the highest content of gallic acid,quercetin-3-rhamnoside and rutin.The scavenging ability of Hainan Morindacitrifolia L.fruits to 2,2’-azino bis(3-ethylbenzothiazoline-6-sulfonic acid)ammonium salt free radicals was stronger than Morindacitrifolia L.fruits from Fiji,while the scavenging ability to 1,1-diphenyl-2-picrylhydrazyl free radicals and ferric ion reducing antioxidant power was weaker than that of Morindacitrifolia L.fruit from Fiji,which were related to the composition of main phenolic substances.Conclusion Two kinds of Morindacitrifolia L.fruits shows high nutritional value and good antioxidant activity,and the comprehensive quality of Morindacitrifolia L.fruits from Fiji is slightly better than that from Hainan.