摘要
目的：人们越来越注意饮食的合理健康问题，坚果微量元素含量丰富，渐渐成为人们日常消费品。铜是人体必需的微量元素之一，对于维持人的生命活动发挥着重要作用。监测坚果中铜元素的含量，指导人们合理选择食用。方法：用湿法消化-火焰原子吸收分光光度法对7种市面上常售的坚果（巴旦木、美国山核桃、核桃、松子、开心果、澳洲坚果）进行测定。运用统计学方法对结果进行分析，确定是否具有显著意义。结果：由于坚果的品种和生长环境的不同，所测样品中铜含量由高到低依次为核桃（15.4229mg/kg）>开心果（13.0142mg/kg）>松子（11.7226mg/kg）>巴旦木（9.8965mg/kg）>美国山核桃（9.1470mg/kg）>盐焗开心果（6.8381mg/kg）>澳洲坚果（5.3722mg/kg）；所选样品均含有铜元素，含量最高的核桃仅比含量最低的夏威夷果高2.7倍，有显著意义；经盐焗工艺加工的开心果铜含量低于未经加工的开心果，有显著意义。结论：本次实验证实坚果中铜元素含量偏高，对于人们日常食用坚果有一定指导意义。经盐焗处理的开心果铜元素流失严重，选择食用坚果可选择未经加工的坚果。缺铜的人群可以选择食用铜含量高的核桃、松子、巴旦木，补充体内所必需的铜；对于体内铜含量较多的人群，尽可能要少食坚果食品，以免铜中毒。
Abstract
Objective: More and more people pay attention to the reasonable diet health problems, the content of trace elements in nuts rich, gradual y become people daily consumption goods often.Copper is one of essential trace elements in human body, for the maintenance of human life activities play an important role.The content of copper element monitoring nuts, guide people rational selection of food. Methods :With wet digestion and flame atomic absorption of 7 kinds of common market sel ing nuts spectrophotometry (almonds, Carya il inoensis Koch, Juglans, pine nut, pistachio , Macadamia ternifolia F. Muel ) were measured.The use of statistical methods to analyze the results, determine whether significant. Results:The copper content in samples from high to low is Juglans (15.4229mg/kg) > pistachio (13.0142mg/kg)> pine mnut (11.7226mg/kg) > almonds (9.8965mg/kg) > Carya il inoensis Koch(9.1470mg/kg) > salted pistachios (6.8381mg/kg) > Macadamia ternifolia F. Muel (5.3722mg/kg);The sample products contain copper, the highest content of walnut than macadamia nuts in the lowest 2.7 times higher, with significant;After salted pistachios copper content processing technology is lower than unprocessed pistachios , there are significant. Conclusion:The experiment proved that the high copper content of nuts, have a certain guiding significance for the people's daily edible nuts.The pistachio copper salt baked processing loss, select the edible nuts can choose the unprocessed nuts.Copper deficiency people can choose to eat high copper content of walnut, pine nut, almond, necessary to supplement the body of copper;For in vivo copper content of more people, as far as possible to Eat nuts food, avoid copper poisoning.
NETL
NSTL
万方数据