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干热河谷余甘子果实不同采收时间矿质元素含量变化分析

Analysis of Mineral Elements Content Changes in Phyllanthus emblica Fruits at Different Harvest Time in Dry-hot Valley

  • 摘要: 以2个余甘子品种“盈玉”和“热农1号”为试验材料,采用电感耦合等离子体发射光谱仪测定了5个不同采收时间的余甘子果实中P、K、Ca、Mg、Fe、Mn、Cu、Zn、Na等9种矿质元素的含量,研究了不同采收时间余甘子果实中矿质元素含量的动态变化规律及其相关性,并分析2个品种之间的差异。结果表明:不同品种余甘子果实中矿质元素含量存在明显差异。随着采收时间的推进,“盈玉”“热农1号”果实中K含量呈上升趋势,Na含量呈下降趋势,而P含量呈先升后降再升的变化趋势;“盈玉”果实中Mn含量表现为先升后降再升的变化趋势,Ca、Mg、Mn、Zn、Cu含量总体呈下降趋势,但变异幅度较小;“热农1号”果实中Ca、Mg、Fe、Mn、Cu含量呈先升后降的变化趋势,其中,Ca、Fe、Mn、Cu含量均在10月6日达到最大值,Mg含量在9月6日达到最大值,Zn含量呈现逐渐上升的趋势,并在12月6日达到最高值。总体来看,“热农1号”的各种矿质元素含量在5个采收时间的变异系数略大于“盈玉”,且“热农1号”果实中P、K、Ca、Mg、Fe、Mn、Cu、Zn含量均高于“盈玉”,而Na含量低于“热农1号”。相关性分析结果表明:矿质元素间存在复杂的正相关或负相关关系,“盈玉”果实中P与K,以及Mg与Ca、Fe、Cu、Zn含量间极显著正相关;“热农1号”果实中Fe与Cu,以及Ca、Mg、Mn三者之间的含量极显著正相关。

     

    Abstract: The Phyllanthus emblica L. varieties of “Yingyu” and “Renong 1” were used as the materials, and the content of nine mineral elements such as phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), manganese (Mn), copper (Cu), zinc (Zn) and sodium (Na) in fruits of Phyllanthus emblica L. at 5 different harvest time were determined by inductively coupled plasma optical emission spectrometer (ICP-OES), the dynamic changes rules and correlations of mineral contents in fruits of Phyllanthus emblica L. at different harvesting time and the differences among varieties were discussed. The results showed that there were significant differences in the contents of mineral elements in fruits of different varieties of Phyllanthus emblica. With the advancement of harvesting time, the content of K in fruits of“ Yingyu” and“ Renong 1” showed an upward trend, the content of Na showed a downward trend, while the content of P showed an upward trend and then a downward trend. In the fruit of“ Yingyu”, the Mn content showed a first increasing trend, then decreasing and then increasing trend, while Ca, Mg, Mn, Zn and Cu contents showed a decreasing trend in general. The variation of Ca, Mg, Mn, Zn and Cu contents was lower. In the fruit of“ Renong 1”, the Ca, Mg, Fe, Mn and Cu content showed an increasing, then decreasing trend, in which Ca, Fe, Mn and Cu content was the highest on October 6th, Mg content was the highest on September 6th, and Zn content showed a gradually increasing trend and reached its peak on December 6th. On the whole, the variation of nine mineral elements content in the five harvesting times was slightly larger in“ Renong 1” than“ Ying Yu”, and the contents of P, K, Ca, Mg, Fe, Mn, Cu and Zn in the fruit of“ Renong 1” were higher than those of“ Ying Yu”, while the content of Na was lower than that of“ Renong 1”. The results of correlation analysis showed that there were complex positive or negative correlations among mineral elements contents. In the fruit of“ Ying Yu”, there were highly significant positive correlations within P and K, Mg and Ca, Fe, Cu, Zn content, while in the fruit of“ Renong 1”, there were highly significant positive correlations within Fe and Cu, Ca, Mg and Mn content.