Factors influencing silymarin content and composition in variegated thistle (Silybum marianum)
Factors influencing silymarin content and composition in variegated thistle (Silybum marianum)
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DOI：
10.1080/01140671.2006.9514413
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发表时间：
2006-09-01
影响因子：
1.3
通讯作者：
Douglas, J. A.
中科院分区：
文献类型：
--
作者：
Martin, R. J.;Lauren, D. R.;Douglas, J. A.
杂色或牛奶蓟（水飞蓟。marianum）在新西兰的各种田间试验中生长，并分析种子的水飞蓟素含量和组成。这些试验是一个时间的播种试验与新西兰线和德国品种，植物部分的德国品种的分析，一个时间的种子收获试验与德国和波兰品种，和比较种子的25个生态型的新西兰线从一个范围内的网站，无论是收集，或在一个网站上一起生长后。播种期对水飞蓟素含量影响不大，但对水飞蓟素成分影响不大。不同品种种子中水飞蓟素的含量和组成存在较大差异。新西兰品系的水飞蓟素含量为18 g/kg，而德国品种的水飞蓟素含量为6 g/kg。新西兰品系的水飞蓟素A、水飞蓟宾A和B的百分比显著高于德国品种，但异水飞蓟宾较低且无水飞蓟素。水飞蓟素含量和组成的植物部分之间的范围从没有在茎和叶高达14.7 k/kg的种子。根和花中的水飞蓟素仅由水飞蓟素B和水飞蓟宾B组成，而在绿色种子和种子中，水飞蓟素的30%以上由水飞蓟素组成。种子中水飞蓟素含量随着种子的成熟而增加，但呈下降趋势。在德国线，水飞蓟素A和两个水飞蓟宾的百分比显着增加，种子成熟，而水飞蓟素显着下降，而在波兰线，匡威亦然。25个生态型的水飞蓟素含量范围从10至43克/公斤，在野外收集到22-38克/公斤，当一起生长时，水飞蓟素成分变化很小。
Variegated or milk thistle (Silybum. marianum) was grown in various field trials in New Zealand, and the seed analysed for silymarin content and composition. The trials were a time of sowing trial with a New Zealand line and a German cultivar, an analysis of plant parts of the German cultivar, a time of seed harvest trial with the German and a Polish cultivar, and a comparison of seed of 25 ecotypes of the New Zealand line from a range of sites, either as collected, or after growing together on one site. Sowing date had a small effect on silymarin concentration, but not on silymarin composition. There were large differences between cultivars in seed silymarin content and composition. The New Zealand line had 18 g/kg of silymarin, whereas the German cultivar had 6 g/kg. The New Zealand line had a significantly higher percentage of silychristin A, and silybins A and B than the German cultivar, but lower isosilybins and no silydianin. Silymarin content and composition between parts of the plant ranged from none in the stems and leaves up to 14.7 k/kg in the seeds. Silymarin in the roots and flowers was made up of only silychristin B and silybin B, whereas in the green seed head and seeds, silydianin made up over 30% of the silymarin. Seed silymarin content increased as the seed matured, but at a decreasing rate. In the German line, the percentage of silychristin A and both silybins increased significantly as the seed matured, while silydianin decreased significantly, whereas in the Polish line, the converse was true. The range in silymarin content of the 25 ecotypes decreased from 10 to 43 g/kg as collected in the wild to 22-38 g/kg when grown together, with very little change in silymarin composition.