富硒和非富硒雪樱子中健康有益成分的对比分析

Comparative Analysis of Health-Benefiting Components in Selenium-Enriched and Non-Selenium-Enriched Amaranthus caudatus L.

为研究富硒对雪樱子成分的影响,测定富硒和非富硒雪樱子中健康有益成分含量并进行对比分析。在超高效液相色谱-串联质谱代谢组学技术分析雪樱子成分的基础上,根据所含成分的丰度测定雪樱子根、茎、叶、花4个部位的多酚、黄酮、矿物质含量,并比较富硒与非富硒雪樱子中这类物质含量的差异。结果发现富硒雪樱子的多酚、黄酮、矿物质含量(锌除外)普遍高于非富硒雪樱子,其中富硒雪樱子叶片的含量变化最明显,多酚含量增长65.9%,黄酮含量增长95.4%,钙含量增长39.5%,铁含量增长16.8%,铜含量增长297.5%,硒含量增长1050.0%,钼含量增长110.7%,钴含量增长300.0%,铬含量增长207.7%,而锌含量降低76.4%。上述数据表明富硒促进了雪樱子各部位中多酚、黄酮及大多数矿物质含量的提升。因此,探讨富硒雪樱子的健康有益成分的变化,可为富硒雪樱子保健产品的开发提供理论依据。

In order to study the effect of selenium enrichment on chemical composition of Amaranthus caudatus L.(ACL),we determined and comparatively analyzed the health-benefiting components(polyphenols,flavonoids and minerals)in the roots,stems,leaves and flowers of Se-enriched and non-Se-enriched ACL by metabonomics based on ultra-high performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS).The results showed that the contents of polyphenols,flavonoids and minerals(except zinc)in Se-enriched ACL were generally higher than those in normal ACL.Among the four plant parts,the leaves of Se-enriched ACL showed the greatest changes in the contents of these components,exhibiting an increase in the contents of polyphenols,flavonoids,calcium,iron,copper,selenium,molybdenum,cobalt and chromium of 65.9%,95.4%,39.5%,16.8%,297.5%,1050.0%,110.7%,300.0%and 207.7%,respectively and a 76.4%decrease in the content of zinc compared to the non-Se-enriched ones.The above data showed that selenium enrichment promoted the accumulation of polyphenols,flavonoids and most minerals in different parts of ACL.This study may provide a theoretical basis for the development of health products from Se-enriched ACL.