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Effect of fertilization on selenium content of tea and the nutritional function of Se-enriched tea in rats

机译：施肥对大鼠茶中硒含量和富硒茶营养功能的影响

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摘要

The present study examined the effect of fertilization with sodium selenite on the selenium content of tea and the nutritional function of Se-enriched tea. Selenium content of tea leaves was increased up to 0.36 μg g−1 by the application of sodium selenite to soil at 0.5 and 1.0 kg Se ha−1. Application by a Se-enriched organic manure at a rate of 0.5 kg Se ha−1 provided a higher biological availability of selenium for plant uptake compared with a similar amount of sodium selenite. Foliar spray of sodium selenite at 50–100 g Se ha−1 increased the selenium content to 0.32–1.45 μg g−1 in tea leaves sampled at the 8–26 days after spraying. Selenium content in the blood and liver, glutathione peroxidase activity in blood of rats were significantly enhanced by feeding of an extracted solution of Se-enriched tea leaves and sodium selenite. Glutathione peroxidase activity in liver of rats fed with Se-enriched tea was higher than that fed with sodium selenite, indicating that the selenium in Se-enriched tea leaves is a more effective Se source than sodium selenite. Increasing the Se level in food products through the application of a selenium fertilizer is a safe, effective and feasible means of increasing the selenium intake of human and animals in low selenium areas of China.
机译：本研究探讨了亚硒酸钠对茶中硒含量和富硒茶营养功能的影响。通过在0.5和1.0 kg Se ha-1 下向土壤中施用亚硒酸钠，茶叶中的硒含量增加到0.36μgg-1 。与类似量的亚硒酸钠相比，以0.5 kg Se ha-1 的富硒有机肥料施用可提供更高的硒生物利用度。叶面喷洒50–100 g Se ha-1 的亚硒酸钠会使喷洒后8–26天采样的茶叶中的硒含量增加至0.32-1.45μgg-1 。通过喂食富含硒的茶叶和亚硒酸钠提取液，可显着提高大鼠血液和肝脏中的硒含量，大鼠血液中的谷胱甘肽过氧化物酶活性。富硒茶组大鼠肝脏中的谷胱甘肽过氧化物酶活性高于亚硒酸钠组，表明富硒茶叶中的硒比硒酸钠更有效。通过使用硒肥提高食品中的硒含量是增加中国低硒地区人和动物硒摄入量的安全，有效和可行的手段。

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  • 来源
    《Plant and Soil》 |2002年第1期|91-95|共5页
  • 作者

    Qiuhui Hu; Genxing Pan; Jianchun Zhu;

  • 作者单位

    College of Food Science and TechnologyCollege of Resource and Environment Science Nanjing Agricultural University;

    College of Resource and Environment Science Nanjing Agricultural University;

    College of Resource and Environment Science Nanjing Agricultural University;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    nutritional function; selenium; Se-enriched tea;

    机译：营养功能;硒;富硒茶;

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